/usr/bin/java -Xmx8000000000 -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-NoLbe-OGIterative-CovSimpl-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/sum_invariant.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 17:51:58,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 17:51:58,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 17:51:58,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 17:51:58,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 17:51:58,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 17:51:58,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 17:51:58,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 17:51:58,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 17:51:58,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 17:51:58,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 17:51:58,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 17:51:58,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 17:51:58,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 17:51:58,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 17:51:58,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 17:51:58,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 17:51:58,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 17:51:58,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 17:51:58,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 17:51:58,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 17:51:58,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 17:51:58,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 17:51:58,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 17:51:58,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 17:51:58,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 17:51:58,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 17:51:58,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 17:51:58,532 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-NoLbe-OGIterative-CovSimpl-Hitting.epf [2021-08-13 17:51:58,552 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 17:51:58,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 17:51:58,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 17:51:58,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 17:51:58,554 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 17:51:58,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 17:51:58,554 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 17:51:58,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 17:51:58,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 17:51:58,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 17:51:58,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 17:51:58,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 17:51:58,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 17:51:58,555 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 17:51:58,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 17:51:58,556 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 17:51:58,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 17:51:58,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 17:51:58,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 17:51:58,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 17:51:58,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 17:51:58,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 17:51:58,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 17:51:58,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 17:51:58,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 17:51:58,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 17:51:58,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 17:51:58,557 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 17:51:58,557 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 17:51:58,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 17:51:58,558 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 17:51:58,558 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 17:51:58,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 17:51:58,558 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 17:51:58,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 17:51:58,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 17:51:58,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 17:51:58,906 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 17:51:58,907 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 17:51:58,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl [2021-08-13 17:51:58,909 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl' [2021-08-13 17:51:58,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 17:51:58,930 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 17:51:58,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 17:51:58,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 17:51:58,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 17:51:58,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:58" (1/1) ... [2021-08-13 17:51:58,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:58" (1/1) ... [2021-08-13 17:51:58,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 17:51:58,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 17:51:58,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 17:51:58,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 17:51:58,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:58" (1/1) ... [2021-08-13 17:51:58,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:58" (1/1) ... [2021-08-13 17:51:58,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:58" (1/1) ... [2021-08-13 17:51:58,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:58" (1/1) ... [2021-08-13 17:51:58,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:58" (1/1) ... [2021-08-13 17:51:58,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:58" (1/1) ... [2021-08-13 17:51:58,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:58" (1/1) ... [2021-08-13 17:51:58,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 17:51:58,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 17:51:58,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 17:51:58,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 17:51:58,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:58" (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 [2021-08-13 17:51:59,041 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 17:51:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 17:51:59,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 17:51:59,041 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-08-13 17:51:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-08-13 17:51:59,042 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-08-13 17:51:59,042 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 17:51:59,160 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 17:51:59,160 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 17:51:59,161 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 05:51:59 BoogieIcfgContainer [2021-08-13 17:51:59,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 17:51:59,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 17:51:59,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 17:51:59,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 17:51:59,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:58" (1/2) ... [2021-08-13 17:51:59,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2828f9d8 and model type sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 05:51:59, skipping insertion in model container [2021-08-13 17:51:59,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 05:51:59" (2/2) ... [2021-08-13 17:51:59,168 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_invariant.bpl [2021-08-13 17:51:59,173 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 17:51:59,173 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 17:51:59,174 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 17:51:59,193 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,194 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,194 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,194 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,195 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,195 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,196 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,196 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,196 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,196 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,196 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,197 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,197 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,197 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,198 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,198 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,198 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,198 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,199 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,199 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,199 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,200 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,200 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,200 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,203 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,206 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,207 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,209 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:59,226 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-08-13 17:51:59,247 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-13 17:51:59,267 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 17:51:59,267 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 17:51:59,268 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 17:51:59,268 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 17:51:59,268 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 17:51:59,268 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 17:51:59,268 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 17:51:59,268 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 17:51:59,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 44 transitions, 156 flow [2021-08-13 17:51:59,348 INFO L129 PetriNetUnfolder]: 17/56 cut-off events. [2021-08-13 17:51:59,349 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-08-13 17:51:59,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 56 events. 17/56 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 140 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 12 conditions per place. [2021-08-13 17:51:59,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 44 transitions, 156 flow [2021-08-13 17:51:59,380 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 136 flow [2021-08-13 17:51:59,417 INFO L129 PetriNetUnfolder]: 17/53 cut-off events. [2021-08-13 17:51:59,417 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-08-13 17:51:59,417 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:51:59,418 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:51:59,418 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:51:59,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:51:59,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1761666906, now seen corresponding path program 1 times [2021-08-13 17:51:59,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:51:59,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956258700] [2021-08-13 17:51:59,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:51:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:51:59,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:59,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:51:59,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:59,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:59,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:59,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:51:59,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:51:59,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:51:59,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956258700] [2021-08-13 17:51:59,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956258700] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:51:59,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:51:59,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:51:59,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674974174] [2021-08-13 17:51:59,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:51:59,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:51:59,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:51:59,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:51:59,663 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 44 [2021-08-13 17:51:59,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:51:59,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:51:59,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 44 [2021-08-13 17:51:59,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:51:59,717 INFO L129 PetriNetUnfolder]: 5/35 cut-off events. [2021-08-13 17:51:59,718 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-08-13 17:51:59,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 35 events. 5/35 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 7/42 useless extension candidates. Maximal degree in co-relation 40. Up to 6 conditions per place. [2021-08-13 17:51:59,719 INFO L132 encePairwiseOnDemand]: 40/44 looper letters, 1 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2021-08-13 17:51:59,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 110 flow [2021-08-13 17:51:59,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:51:59,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:51:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-08-13 17:51:59,733 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9242424242424242 [2021-08-13 17:51:59,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-08-13 17:51:59,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-08-13 17:51:59,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:51:59,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-08-13 17:51:59,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:51:59,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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) [2021-08-13 17:51:59,749 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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) [2021-08-13 17:51:59,750 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2021-08-13 17:51:59,750 INFO L482 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 110 flow [2021-08-13 17:51:59,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:51:59,750 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:51:59,750 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:51:59,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 17:51:59,752 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:51:59,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:51:59,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1414257378, now seen corresponding path program 1 times [2021-08-13 17:51:59,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:51:59,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359923860] [2021-08-13 17:51:59,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:51:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:51:59,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:59,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:59,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:59,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:59,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:59,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:59,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:59,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:59,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:59,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:59,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:59,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:59,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:59,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:59,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:59,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:59,899 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:51:59,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:51:59,907 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:51:59,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359923860] [2021-08-13 17:51:59,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359923860] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:51:59,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:51:59,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:51:59,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582820471] [2021-08-13 17:51:59,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:51:59,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:51:59,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:51:59,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:51:59,917 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:51:59,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 110 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 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) [2021-08-13 17:51:59,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:51:59,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:51:59,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:00,294 INFO L129 PetriNetUnfolder]: 908/1702 cut-off events. [2021-08-13 17:52:00,294 INFO L130 PetriNetUnfolder]: For 449/449 co-relation queries the response was YES. [2021-08-13 17:52:00,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3529 conditions, 1702 events. 908/1702 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 10338 event pairs, 246 based on Foata normal form. 1/1699 useless extension candidates. Maximal degree in co-relation 3344. Up to 710 conditions per place. [2021-08-13 17:52:00,314 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 41 selfloop transitions, 21 changer transitions 0/76 dead transitions. [2021-08-13 17:52:00,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 76 transitions, 354 flow [2021-08-13 17:52:00,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:52:00,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:52:00,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2021-08-13 17:52:00,322 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2021-08-13 17:52:00,322 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 238 transitions. [2021-08-13 17:52:00,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 238 transitions. [2021-08-13 17:52:00,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:00,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 238 transitions. [2021-08-13 17:52:00,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.0) internal successors, (238), 7 states have internal predecessors, (238), 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) [2021-08-13 17:52:00,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 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) [2021-08-13 17:52:00,329 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 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) [2021-08-13 17:52:00,329 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2021-08-13 17:52:00,330 INFO L482 AbstractCegarLoop]: Abstraction has has 47 places, 76 transitions, 354 flow [2021-08-13 17:52:00,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 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) [2021-08-13 17:52:00,330 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:00,330 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:00,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 17:52:00,330 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:00,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:00,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1088069582, now seen corresponding path program 1 times [2021-08-13 17:52:00,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:00,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056671547] [2021-08-13 17:52:00,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:00,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:00,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:52:00,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:00,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:00,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:00,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:52:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:00,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:00,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056671547] [2021-08-13 17:52:00,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056671547] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:00,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:00,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:52:00,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655690271] [2021-08-13 17:52:00,386 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:52:00,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:00,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:52:00,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:52:00,388 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 44 [2021-08-13 17:52:00,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 76 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:52:00,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:00,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 44 [2021-08-13 17:52:00,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:00,542 INFO L129 PetriNetUnfolder]: 872/1602 cut-off events. [2021-08-13 17:52:00,543 INFO L130 PetriNetUnfolder]: For 592/592 co-relation queries the response was YES. [2021-08-13 17:52:00,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3347 conditions, 1602 events. 872/1602 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 9344 event pairs, 246 based on Foata normal form. 64/1666 useless extension candidates. Maximal degree in co-relation 3233. Up to 710 conditions per place. [2021-08-13 17:52:00,557 INFO L132 encePairwiseOnDemand]: 41/44 looper letters, 1 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2021-08-13 17:52:00,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 344 flow [2021-08-13 17:52:00,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:52:00,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:52:00,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2021-08-13 17:52:00,560 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2021-08-13 17:52:00,560 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2021-08-13 17:52:00,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2021-08-13 17:52:00,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:00,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2021-08-13 17:52:00,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:52:00,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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) [2021-08-13 17:52:00,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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) [2021-08-13 17:52:00,561 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 10 predicate places. [2021-08-13 17:52:00,561 INFO L482 AbstractCegarLoop]: Abstraction has has 49 places, 72 transitions, 344 flow [2021-08-13 17:52:00,562 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:52:00,562 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:00,562 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:00,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 17:52:00,562 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:00,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:00,563 INFO L82 PathProgramCache]: Analyzing trace with hash 263185920, now seen corresponding path program 2 times [2021-08-13 17:52:00,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:00,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095062058] [2021-08-13 17:52:00,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:00,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:00,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:00,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:00,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:00,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:00,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:00,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:00,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:00,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:00,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:00,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:00,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:00,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:00,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:00,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:00,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:00,706 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:00,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:00,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:00,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095062058] [2021-08-13 17:52:00,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095062058] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:00,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:00,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:52:00,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295466499] [2021-08-13 17:52:00,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:52:00,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:00,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:52:00,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:52:00,714 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:00,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 72 transitions, 344 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:00,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:00,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:00,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:01,091 INFO L129 PetriNetUnfolder]: 894/1679 cut-off events. [2021-08-13 17:52:01,092 INFO L130 PetriNetUnfolder]: For 410/410 co-relation queries the response was YES. [2021-08-13 17:52:01,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4873 conditions, 1679 events. 894/1679 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10053 event pairs, 247 based on Foata normal form. 1/1680 useless extension candidates. Maximal degree in co-relation 4733. Up to 756 conditions per place. [2021-08-13 17:52:01,109 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 51 selfloop transitions, 35 changer transitions 2/98 dead transitions. [2021-08-13 17:52:01,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 98 transitions, 624 flow [2021-08-13 17:52:01,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:52:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:52:01,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 17:52:01,113 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 17:52:01,113 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 17:52:01,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 17:52:01,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:01,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 17:52:01,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 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) [2021-08-13 17:52:01,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:01,116 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:01,117 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2021-08-13 17:52:01,117 INFO L482 AbstractCegarLoop]: Abstraction has has 56 places, 98 transitions, 624 flow [2021-08-13 17:52:01,117 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:01,117 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:01,117 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:01,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 17:52:01,118 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:01,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:01,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1249715524, now seen corresponding path program 3 times [2021-08-13 17:52:01,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:01,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495353710] [2021-08-13 17:52:01,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:01,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:01,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,230 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:01,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:01,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:01,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495353710] [2021-08-13 17:52:01,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495353710] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:01,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:01,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:52:01,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630792748] [2021-08-13 17:52:01,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:52:01,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:01,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:52:01,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:52:01,237 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:01,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 98 transitions, 624 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:01,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:01,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:01,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:01,505 INFO L129 PetriNetUnfolder]: 916/1741 cut-off events. [2021-08-13 17:52:01,506 INFO L130 PetriNetUnfolder]: For 427/427 co-relation queries the response was YES. [2021-08-13 17:52:01,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6474 conditions, 1741 events. 916/1741 cut-off events. For 427/427 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10659 event pairs, 254 based on Foata normal form. 1/1742 useless extension candidates. Maximal degree in co-relation 6301. Up to 802 conditions per place. [2021-08-13 17:52:01,521 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 75 selfloop transitions, 37 changer transitions 2/124 dead transitions. [2021-08-13 17:52:01,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 124 transitions, 1008 flow [2021-08-13 17:52:01,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:52:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:52:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 17:52:01,523 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 17:52:01,523 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 17:52:01,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 17:52:01,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:01,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 17:52:01,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 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) [2021-08-13 17:52:01,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:01,525 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:01,525 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 24 predicate places. [2021-08-13 17:52:01,525 INFO L482 AbstractCegarLoop]: Abstraction has has 63 places, 124 transitions, 1008 flow [2021-08-13 17:52:01,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:01,525 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:01,525 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:01,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 17:52:01,525 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:01,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:01,526 INFO L82 PathProgramCache]: Analyzing trace with hash -466014492, now seen corresponding path program 4 times [2021-08-13 17:52:01,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:01,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245939659] [2021-08-13 17:52:01,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:01,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:01,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,597 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:01,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:01,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:01,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245939659] [2021-08-13 17:52:01,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245939659] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:01,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:01,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:52:01,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468375946] [2021-08-13 17:52:01,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:52:01,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:01,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:52:01,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:52:01,602 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:01,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 124 transitions, 1008 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:01,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:01,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:01,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:01,903 INFO L129 PetriNetUnfolder]: 947/1865 cut-off events. [2021-08-13 17:52:01,903 INFO L130 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2021-08-13 17:52:01,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8300 conditions, 1865 events. 947/1865 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11961 event pairs, 251 based on Foata normal form. 1/1866 useless extension candidates. Maximal degree in co-relation 8086. Up to 858 conditions per place. [2021-08-13 17:52:01,920 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 106 selfloop transitions, 35 changer transitions 4/155 dead transitions. [2021-08-13 17:52:01,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 155 transitions, 1571 flow [2021-08-13 17:52:01,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:52:01,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:52:01,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 270 transitions. [2021-08-13 17:52:01,923 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2021-08-13 17:52:01,923 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 270 transitions. [2021-08-13 17:52:01,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 270 transitions. [2021-08-13 17:52:01,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:01,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 270 transitions. [2021-08-13 17:52:01,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.75) internal successors, (270), 8 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:52:01,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:01,925 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:01,926 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 31 predicate places. [2021-08-13 17:52:01,926 INFO L482 AbstractCegarLoop]: Abstraction has has 70 places, 155 transitions, 1571 flow [2021-08-13 17:52:01,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:01,926 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:01,926 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:01,926 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 17:52:01,926 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:01,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:01,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1968692424, now seen corresponding path program 5 times [2021-08-13 17:52:01,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:01,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057711357] [2021-08-13 17:52:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:01,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:01,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:01,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:02,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:52:02,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:02,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,046 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:02,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:02,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:02,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:02,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057711357] [2021-08-13 17:52:02,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057711357] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:02,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:02,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:52:02,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75409250] [2021-08-13 17:52:02,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:52:02,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:02,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:52:02,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:52:02,055 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:02,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 155 transitions, 1571 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:02,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:02,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:02,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:02,468 INFO L129 PetriNetUnfolder]: 1068/2163 cut-off events. [2021-08-13 17:52:02,468 INFO L130 PetriNetUnfolder]: For 575/575 co-relation queries the response was YES. [2021-08-13 17:52:02,474 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11217 conditions, 2163 events. 1068/2163 cut-off events. For 575/575 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14765 event pairs, 178 based on Foata normal form. 1/2164 useless extension candidates. Maximal degree in co-relation 10951. Up to 1144 conditions per place. [2021-08-13 17:52:02,490 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 173 selfloop transitions, 55 changer transitions 9/247 dead transitions. [2021-08-13 17:52:02,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 247 transitions, 3000 flow [2021-08-13 17:52:02,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:52:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:52:02,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-08-13 17:52:02,492 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-08-13 17:52:02,492 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-08-13 17:52:02,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-08-13 17:52:02,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:02,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-08-13 17:52:02,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.111111111111114) internal successors, (298), 9 states have internal predecessors, (298), 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) [2021-08-13 17:52:02,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:02,494 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:02,494 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 39 predicate places. [2021-08-13 17:52:02,495 INFO L482 AbstractCegarLoop]: Abstraction has has 78 places, 247 transitions, 3000 flow [2021-08-13 17:52:02,495 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:02,495 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:02,495 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:02,495 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 17:52:02,495 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:02,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:02,496 INFO L82 PathProgramCache]: Analyzing trace with hash -770218848, now seen corresponding path program 6 times [2021-08-13 17:52:02,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:02,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267239725] [2021-08-13 17:52:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:02,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:02,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:02,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,563 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:02,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:02,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:02,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267239725] [2021-08-13 17:52:02,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267239725] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:02,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:02,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:52:02,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275391908] [2021-08-13 17:52:02,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:52:02,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:02,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:52:02,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:52:02,568 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:02,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 247 transitions, 3000 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:02,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:02,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:02,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:02,978 INFO L129 PetriNetUnfolder]: 1080/2200 cut-off events. [2021-08-13 17:52:02,978 INFO L130 PetriNetUnfolder]: For 583/583 co-relation queries the response was YES. [2021-08-13 17:52:02,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13124 conditions, 2200 events. 1080/2200 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 15157 event pairs, 178 based on Foata normal form. 1/2201 useless extension candidates. Maximal degree in co-relation 12855. Up to 1175 conditions per place. [2021-08-13 17:52:03,003 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 206 selfloop transitions, 50 changer transitions 11/277 dead transitions. [2021-08-13 17:52:03,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 277 transitions, 3894 flow [2021-08-13 17:52:03,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:52:03,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:52:03,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-08-13 17:52:03,005 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-08-13 17:52:03,005 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-08-13 17:52:03,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-08-13 17:52:03,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:03,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-08-13 17:52:03,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.5) internal successors, (268), 8 states have internal predecessors, (268), 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) [2021-08-13 17:52:03,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:03,007 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:03,007 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 46 predicate places. [2021-08-13 17:52:03,007 INFO L482 AbstractCegarLoop]: Abstraction has has 85 places, 277 transitions, 3894 flow [2021-08-13 17:52:03,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:03,008 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:03,008 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:03,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 17:52:03,008 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:03,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:03,009 INFO L82 PathProgramCache]: Analyzing trace with hash -889785942, now seen corresponding path program 7 times [2021-08-13 17:52:03,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:03,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588149112] [2021-08-13 17:52:03,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:03,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:03,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:52:03,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:03,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,091 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:03,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:03,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:03,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588149112] [2021-08-13 17:52:03,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588149112] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:03,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:03,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:52:03,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240923761] [2021-08-13 17:52:03,095 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:52:03,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:03,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:52:03,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:52:03,096 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:03,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 277 transitions, 3894 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:03,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:03,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:03,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:03,625 INFO L129 PetriNetUnfolder]: 1116/2309 cut-off events. [2021-08-13 17:52:03,625 INFO L130 PetriNetUnfolder]: For 626/626 co-relation queries the response was YES. [2021-08-13 17:52:03,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15445 conditions, 2309 events. 1116/2309 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 16193 event pairs, 178 based on Foata normal form. 1/2308 useless extension candidates. Maximal degree in co-relation 15154. Up to 1242 conditions per place. [2021-08-13 17:52:03,656 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 214 selfloop transitions, 70 changer transitions 20/314 dead transitions. [2021-08-13 17:52:03,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 314 transitions, 5020 flow [2021-08-13 17:52:03,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:52:03,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:52:03,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-08-13 17:52:03,658 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-08-13 17:52:03,658 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-08-13 17:52:03,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-08-13 17:52:03,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:03,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-08-13 17:52:03,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.111111111111114) internal successors, (298), 9 states have internal predecessors, (298), 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) [2021-08-13 17:52:03,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:03,661 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:03,661 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 54 predicate places. [2021-08-13 17:52:03,661 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 314 transitions, 5020 flow [2021-08-13 17:52:03,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:03,661 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:03,661 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:03,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 17:52:03,662 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:03,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:03,663 INFO L82 PathProgramCache]: Analyzing trace with hash 449096972, now seen corresponding path program 8 times [2021-08-13 17:52:03,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:03,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738819305] [2021-08-13 17:52:03,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:03,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:03,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:03,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,774 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:03,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:03,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:03,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738819305] [2021-08-13 17:52:03,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738819305] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:03,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:03,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:52:03,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203257811] [2021-08-13 17:52:03,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:52:03,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:03,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:52:03,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:52:03,779 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:03,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 314 transitions, 5020 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:03,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:03,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:03,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:04,297 INFO L129 PetriNetUnfolder]: 1131/2358 cut-off events. [2021-08-13 17:52:04,297 INFO L130 PetriNetUnfolder]: For 649/649 co-relation queries the response was YES. [2021-08-13 17:52:04,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17567 conditions, 2358 events. 1131/2358 cut-off events. For 649/649 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 16731 event pairs, 175 based on Foata normal form. 1/2356 useless extension candidates. Maximal degree in co-relation 17263. Up to 1276 conditions per place. [2021-08-13 17:52:04,322 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 204 selfloop transitions, 92 changer transitions 28/334 dead transitions. [2021-08-13 17:52:04,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 334 transitions, 5988 flow [2021-08-13 17:52:04,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:52:04,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:52:04,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-08-13 17:52:04,324 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-08-13 17:52:04,324 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-08-13 17:52:04,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-08-13 17:52:04,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:04,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-08-13 17:52:04,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 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) [2021-08-13 17:52:04,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:04,327 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:04,327 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2021-08-13 17:52:04,327 INFO L482 AbstractCegarLoop]: Abstraction has has 101 places, 334 transitions, 5988 flow [2021-08-13 17:52:04,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:04,327 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:04,327 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:04,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 17:52:04,328 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:04,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:04,329 INFO L82 PathProgramCache]: Analyzing trace with hash -741333820, now seen corresponding path program 9 times [2021-08-13 17:52:04,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:04,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131400961] [2021-08-13 17:52:04,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:04,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:04,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:04,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:04,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:04,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:04,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:04,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:04,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:04,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:04,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:04,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:04,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:52:04,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:04,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:04,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:04,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:04,433 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:04,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:04,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:04,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:04,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131400961] [2021-08-13 17:52:04,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131400961] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:04,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:04,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:52:04,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72940463] [2021-08-13 17:52:04,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:52:04,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:04,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:52:04,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:52:04,438 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:04,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 334 transitions, 5988 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:04,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:04,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:04,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:04,913 INFO L129 PetriNetUnfolder]: 1177/2509 cut-off events. [2021-08-13 17:52:04,913 INFO L130 PetriNetUnfolder]: For 673/673 co-relation queries the response was YES. [2021-08-13 17:52:04,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20440 conditions, 2509 events. 1177/2509 cut-off events. For 673/673 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 18374 event pairs, 157 based on Foata normal form. 1/2509 useless extension candidates. Maximal degree in co-relation 20129. Up to 1374 conditions per place. [2021-08-13 17:52:05,018 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 284 selfloop transitions, 91 changer transitions 57/442 dead transitions. [2021-08-13 17:52:05,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 442 transitions, 8796 flow [2021-08-13 17:52:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:52:05,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:52:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-08-13 17:52:05,020 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-08-13 17:52:05,020 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-08-13 17:52:05,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-08-13 17:52:05,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:05,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-08-13 17:52:05,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.22222222222222) internal successors, (299), 9 states have internal predecessors, (299), 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) [2021-08-13 17:52:05,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:05,022 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:05,022 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 70 predicate places. [2021-08-13 17:52:05,022 INFO L482 AbstractCegarLoop]: Abstraction has has 109 places, 442 transitions, 8796 flow [2021-08-13 17:52:05,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:05,022 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:05,022 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:05,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 17:52:05,023 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:05,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:05,023 INFO L82 PathProgramCache]: Analyzing trace with hash -852093036, now seen corresponding path program 10 times [2021-08-13 17:52:05,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:05,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073421771] [2021-08-13 17:52:05,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:05,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:05,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:05,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:05,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:05,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:05,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:05,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:05,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:05,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:05,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:05,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:05,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:05,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:05,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:05,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:05,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:05,095 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:05,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:05,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:05,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:05,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073421771] [2021-08-13 17:52:05,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073421771] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:05,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:05,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:52:05,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211796948] [2021-08-13 17:52:05,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:52:05,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:05,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:52:05,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:52:05,101 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:05,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 442 transitions, 8796 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:05,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:05,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:05,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:05,605 INFO L129 PetriNetUnfolder]: 1189/2551 cut-off events. [2021-08-13 17:52:05,605 INFO L130 PetriNetUnfolder]: For 695/695 co-relation queries the response was YES. [2021-08-13 17:52:05,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22698 conditions, 2551 events. 1189/2551 cut-off events. For 695/695 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 18935 event pairs, 157 based on Foata normal form. 1/2549 useless extension candidates. Maximal degree in co-relation 22380. Up to 1427 conditions per place. [2021-08-13 17:52:05,690 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 330 selfloop transitions, 62 changer transitions 57/459 dead transitions. [2021-08-13 17:52:05,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 459 transitions, 10034 flow [2021-08-13 17:52:05,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:52:05,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:52:05,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2021-08-13 17:52:05,691 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7585227272727273 [2021-08-13 17:52:05,691 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 267 transitions. [2021-08-13 17:52:05,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 267 transitions. [2021-08-13 17:52:05,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:05,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 267 transitions. [2021-08-13 17:52:05,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.375) internal successors, (267), 8 states have internal predecessors, (267), 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) [2021-08-13 17:52:05,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:05,693 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:05,693 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2021-08-13 17:52:05,693 INFO L482 AbstractCegarLoop]: Abstraction has has 116 places, 459 transitions, 10034 flow [2021-08-13 17:52:05,694 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:05,694 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:05,694 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:05,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 17:52:05,694 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:05,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:05,694 INFO L82 PathProgramCache]: Analyzing trace with hash 934782332, now seen corresponding path program 11 times [2021-08-13 17:52:05,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:05,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505955440] [2021-08-13 17:52:05,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:05,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:05,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:05,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:05,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:05,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:05,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:05,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:05,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:05,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:05,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:05,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:05,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:52:05,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:05,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:05,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:05,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:05,775 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:05,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:05,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:05,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505955440] [2021-08-13 17:52:05,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505955440] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:05,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:05,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:52:05,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935168046] [2021-08-13 17:52:05,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:52:05,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:05,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:52:05,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:52:05,780 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:05,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 459 transitions, 10034 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:05,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:05,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:05,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:06,470 INFO L129 PetriNetUnfolder]: 1209/2651 cut-off events. [2021-08-13 17:52:06,470 INFO L130 PetriNetUnfolder]: For 748/748 co-relation queries the response was YES. [2021-08-13 17:52:06,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25352 conditions, 2651 events. 1209/2651 cut-off events. For 748/748 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 20166 event pairs, 157 based on Foata normal form. 1/2649 useless extension candidates. Maximal degree in co-relation 25001. Up to 1479 conditions per place. [2021-08-13 17:52:06,507 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 329 selfloop transitions, 94 changer transitions 62/495 dead transitions. [2021-08-13 17:52:06,507 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 495 transitions, 11796 flow [2021-08-13 17:52:06,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:52:06,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:52:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 17:52:06,509 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 17:52:06,509 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 17:52:06,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 17:52:06,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:06,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 17:52:06,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 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) [2021-08-13 17:52:06,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:06,512 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:06,512 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 85 predicate places. [2021-08-13 17:52:06,512 INFO L482 AbstractCegarLoop]: Abstraction has has 124 places, 495 transitions, 11796 flow [2021-08-13 17:52:06,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:06,512 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:06,513 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:06,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 17:52:06,513 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:06,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:06,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1485732086, now seen corresponding path program 12 times [2021-08-13 17:52:06,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:06,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655689408] [2021-08-13 17:52:06,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:06,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:06,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:06,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:06,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:06,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:06,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:06,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:06,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:06,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:06,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:06,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:06,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:06,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:06,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:06,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:06,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:06,608 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:06,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:06,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:06,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:06,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655689408] [2021-08-13 17:52:06,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655689408] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:06,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:06,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:52:06,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010035321] [2021-08-13 17:52:06,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:52:06,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:06,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:52:06,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:52:06,614 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:06,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 495 transitions, 11796 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:06,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:06,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:06,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:07,428 INFO L129 PetriNetUnfolder]: 1222/2697 cut-off events. [2021-08-13 17:52:07,429 INFO L130 PetriNetUnfolder]: For 787/787 co-relation queries the response was YES. [2021-08-13 17:52:07,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27741 conditions, 2697 events. 1222/2697 cut-off events. For 787/787 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 20690 event pairs, 155 based on Foata normal form. 1/2696 useless extension candidates. Maximal degree in co-relation 27358. Up to 1505 conditions per place. [2021-08-13 17:52:07,466 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 308 selfloop transitions, 112 changer transitions 81/511 dead transitions. [2021-08-13 17:52:07,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 511 transitions, 13182 flow [2021-08-13 17:52:07,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:52:07,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:52:07,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-08-13 17:52:07,468 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-08-13 17:52:07,468 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-08-13 17:52:07,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-08-13 17:52:07,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:07,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-08-13 17:52:07,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 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) [2021-08-13 17:52:07,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:07,470 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:07,470 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 93 predicate places. [2021-08-13 17:52:07,470 INFO L482 AbstractCegarLoop]: Abstraction has has 132 places, 511 transitions, 13182 flow [2021-08-13 17:52:07,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:07,470 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:07,470 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:07,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 17:52:07,471 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:07,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:07,471 INFO L82 PathProgramCache]: Analyzing trace with hash -738542674, now seen corresponding path program 13 times [2021-08-13 17:52:07,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:07,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458557569] [2021-08-13 17:52:07,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:07,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:07,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:07,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:07,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:07,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:07,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:07,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:07,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:07,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:07,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:07,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:07,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:07,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:07,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:07,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:07,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:07,538 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:07,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:07,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:07,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458557569] [2021-08-13 17:52:07,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458557569] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:07,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:07,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:52:07,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687580683] [2021-08-13 17:52:07,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:52:07,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:07,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:52:07,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:52:07,543 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:07,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 511 transitions, 13182 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:07,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:07,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:07,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:08,183 INFO L129 PetriNetUnfolder]: 1279/2864 cut-off events. [2021-08-13 17:52:08,183 INFO L130 PetriNetUnfolder]: For 844/844 co-relation queries the response was YES. [2021-08-13 17:52:08,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31399 conditions, 2864 events. 1279/2864 cut-off events. For 844/844 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 22525 event pairs, 155 based on Foata normal form. 1/2862 useless extension candidates. Maximal degree in co-relation 30982. Up to 1577 conditions per place. [2021-08-13 17:52:08,222 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 384 selfloop transitions, 75 changer transitions 96/565 dead transitions. [2021-08-13 17:52:08,222 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 565 transitions, 15696 flow [2021-08-13 17:52:08,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:52:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:52:08,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 17:52:08,224 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 17:52:08,224 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 17:52:08,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 17:52:08,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:08,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 17:52:08,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 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) [2021-08-13 17:52:08,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:08,226 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:08,226 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 100 predicate places. [2021-08-13 17:52:08,226 INFO L482 AbstractCegarLoop]: Abstraction has has 139 places, 565 transitions, 15696 flow [2021-08-13 17:52:08,226 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:08,226 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:08,226 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:08,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 17:52:08,227 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:08,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:08,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1272456132, now seen corresponding path program 14 times [2021-08-13 17:52:08,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:08,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446796425] [2021-08-13 17:52:08,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:08,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:08,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:08,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:08,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:08,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:08,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:08,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:08,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:08,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:08,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:08,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:08,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:52:08,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:08,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:08,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:08,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:08,394 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:08,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:08,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:08,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446796425] [2021-08-13 17:52:08,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446796425] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:08,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:08,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:52:08,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29943777] [2021-08-13 17:52:08,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:52:08,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:08,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:52:08,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:52:08,414 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:08,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 565 transitions, 15696 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:08,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:08,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:08,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:09,315 INFO L129 PetriNetUnfolder]: 1323/3007 cut-off events. [2021-08-13 17:52:09,315 INFO L130 PetriNetUnfolder]: For 904/904 co-relation queries the response was YES. [2021-08-13 17:52:09,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34871 conditions, 3007 events. 1323/3007 cut-off events. For 904/904 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 24149 event pairs, 155 based on Foata normal form. 1/3005 useless extension candidates. Maximal degree in co-relation 34427. Up to 1660 conditions per place. [2021-08-13 17:52:09,347 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 414 selfloop transitions, 78 changer transitions 110/612 dead transitions. [2021-08-13 17:52:09,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 612 transitions, 18216 flow [2021-08-13 17:52:09,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:52:09,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:52:09,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-08-13 17:52:09,349 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-08-13 17:52:09,349 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-08-13 17:52:09,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-08-13 17:52:09,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:09,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-08-13 17:52:09,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.111111111111114) internal successors, (298), 9 states have internal predecessors, (298), 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) [2021-08-13 17:52:09,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:09,351 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:09,351 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 108 predicate places. [2021-08-13 17:52:09,351 INFO L482 AbstractCegarLoop]: Abstraction has has 147 places, 612 transitions, 18216 flow [2021-08-13 17:52:09,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:09,351 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:09,351 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:09,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 17:52:09,351 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:09,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:09,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1809580578, now seen corresponding path program 15 times [2021-08-13 17:52:09,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:09,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485008899] [2021-08-13 17:52:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:09,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:09,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:09,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:09,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:09,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:09,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:09,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:09,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:09,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:09,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:09,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:09,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:52:09,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:09,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:09,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:09,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:09,436 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:09,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:09,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:09,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485008899] [2021-08-13 17:52:09,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485008899] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:09,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:09,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:52:09,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234387520] [2021-08-13 17:52:09,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:52:09,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:09,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:52:09,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:52:09,441 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:09,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 612 transitions, 18216 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:09,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:09,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:09,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:10,569 INFO L129 PetriNetUnfolder]: 1342/3101 cut-off events. [2021-08-13 17:52:10,570 INFO L130 PetriNetUnfolder]: For 960/960 co-relation queries the response was YES. [2021-08-13 17:52:10,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37935 conditions, 3101 events. 1342/3101 cut-off events. For 960/960 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 25369 event pairs, 159 based on Foata normal form. 1/3099 useless extension candidates. Maximal degree in co-relation 37464. Up to 1708 conditions per place. [2021-08-13 17:52:10,599 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 402 selfloop transitions, 112 changer transitions 124/648 dead transitions. [2021-08-13 17:52:10,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 648 transitions, 20572 flow [2021-08-13 17:52:10,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:52:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:52:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-08-13 17:52:10,602 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-08-13 17:52:10,602 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-08-13 17:52:10,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-08-13 17:52:10,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:10,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-08-13 17:52:10,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.22222222222222) internal successors, (299), 9 states have internal predecessors, (299), 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) [2021-08-13 17:52:10,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:10,604 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:10,605 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 116 predicate places. [2021-08-13 17:52:10,605 INFO L482 AbstractCegarLoop]: Abstraction has has 155 places, 648 transitions, 20572 flow [2021-08-13 17:52:10,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:10,605 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:10,605 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:10,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 17:52:10,605 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:10,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:10,606 INFO L82 PathProgramCache]: Analyzing trace with hash -185273474, now seen corresponding path program 16 times [2021-08-13 17:52:10,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:10,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566824648] [2021-08-13 17:52:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:10,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:10,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:10,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,686 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:10,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:10,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:10,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566824648] [2021-08-13 17:52:10,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566824648] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:10,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:10,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:52:10,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124689591] [2021-08-13 17:52:10,690 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:52:10,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:10,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:52:10,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:52:10,691 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:10,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 648 transitions, 20572 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:10,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:10,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:10,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:11,880 INFO L129 PetriNetUnfolder]: 1347/3130 cut-off events. [2021-08-13 17:52:11,880 INFO L130 PetriNetUnfolder]: For 1004/1004 co-relation queries the response was YES. [2021-08-13 17:52:11,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40465 conditions, 3130 events. 1347/3130 cut-off events. For 1004/1004 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 25820 event pairs, 159 based on Foata normal form. 1/3128 useless extension candidates. Maximal degree in co-relation 39968. Up to 1721 conditions per place. [2021-08-13 17:52:11,909 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 384 selfloop transitions, 134 changer transitions 129/657 dead transitions. [2021-08-13 17:52:11,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 657 transitions, 22154 flow [2021-08-13 17:52:11,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:52:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:52:11,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-08-13 17:52:11,910 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-08-13 17:52:11,911 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-08-13 17:52:11,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-08-13 17:52:11,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:11,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-08-13 17:52:11,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 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) [2021-08-13 17:52:11,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:11,913 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:11,913 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 124 predicate places. [2021-08-13 17:52:11,913 INFO L482 AbstractCegarLoop]: Abstraction has has 163 places, 657 transitions, 22154 flow [2021-08-13 17:52:11,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:11,913 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:11,913 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:11,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 17:52:11,914 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:11,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:11,914 INFO L82 PathProgramCache]: Analyzing trace with hash 980497248, now seen corresponding path program 17 times [2021-08-13 17:52:11,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:11,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960875295] [2021-08-13 17:52:11,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:11,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:11,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:11,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:11,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:11,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:11,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:11,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:11,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:11,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:11,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:11,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:11,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:52:11,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:11,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:11,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:11,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:11,987 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:11,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:11,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:11,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:11,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960875295] [2021-08-13 17:52:11,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960875295] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:11,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:11,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:52:11,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309796291] [2021-08-13 17:52:11,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:52:11,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:11,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:52:11,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:52:11,993 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:11,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 657 transitions, 22154 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:11,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:11,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:11,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:13,147 INFO L129 PetriNetUnfolder]: 1404/3380 cut-off events. [2021-08-13 17:52:13,147 INFO L130 PetriNetUnfolder]: For 1132/1132 co-relation queries the response was YES. [2021-08-13 17:52:13,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45292 conditions, 3380 events. 1404/3380 cut-off events. For 1132/1132 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 29105 event pairs, 154 based on Foata normal form. 1/3378 useless extension candidates. Maximal degree in co-relation 44746. Up to 1851 conditions per place. [2021-08-13 17:52:13,177 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 512 selfloop transitions, 90 changer transitions 162/774 dead transitions. [2021-08-13 17:52:13,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 774 transitions, 27710 flow [2021-08-13 17:52:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:52:13,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:52:13,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 17:52:13,178 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 17:52:13,178 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 17:52:13,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 17:52:13,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:13,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 17:52:13,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 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) [2021-08-13 17:52:13,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:13,180 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:13,181 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 132 predicate places. [2021-08-13 17:52:13,181 INFO L482 AbstractCegarLoop]: Abstraction has has 171 places, 774 transitions, 27710 flow [2021-08-13 17:52:13,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:13,181 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:13,181 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:13,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-13 17:52:13,181 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:13,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:13,182 INFO L82 PathProgramCache]: Analyzing trace with hash 523850460, now seen corresponding path program 18 times [2021-08-13 17:52:13,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:13,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499347787] [2021-08-13 17:52:13,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:13,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:13,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:13,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:13,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:13,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:13,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:13,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:13,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:13,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:13,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:13,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:13,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:52:13,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:13,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:13,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:13,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:13,258 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:13,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:13,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:13,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499347787] [2021-08-13 17:52:13,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499347787] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:13,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:13,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:52:13,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029271096] [2021-08-13 17:52:13,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:52:13,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:13,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:52:13,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:52:13,262 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:13,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 774 transitions, 27710 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:13,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:13,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:13,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:14,635 INFO L129 PetriNetUnfolder]: 1416/3465 cut-off events. [2021-08-13 17:52:14,635 INFO L130 PetriNetUnfolder]: For 1195/1195 co-relation queries the response was YES. [2021-08-13 17:52:14,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48626 conditions, 3465 events. 1416/3465 cut-off events. For 1195/1195 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 30368 event pairs, 154 based on Foata normal form. 1/3461 useless extension candidates. Maximal degree in co-relation 48048. Up to 1896 conditions per place. [2021-08-13 17:52:14,667 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 496 selfloop transitions, 128 changer transitions 200/834 dead transitions. [2021-08-13 17:52:14,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 834 transitions, 31518 flow [2021-08-13 17:52:14,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:52:14,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:52:14,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 17:52:14,668 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 17:52:14,668 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 17:52:14,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 17:52:14,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:14,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 17:52:14,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 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) [2021-08-13 17:52:14,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:14,670 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:14,670 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 140 predicate places. [2021-08-13 17:52:14,670 INFO L482 AbstractCegarLoop]: Abstraction has has 179 places, 834 transitions, 31518 flow [2021-08-13 17:52:14,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:14,670 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:14,670 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:14,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-13 17:52:14,671 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:14,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:14,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1046380510, now seen corresponding path program 19 times [2021-08-13 17:52:14,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:14,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753773640] [2021-08-13 17:52:14,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:14,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:14,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:14,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:14,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:14,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:14,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:14,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:14,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:14,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:14,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:14,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:14,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:52:14,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:14,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:14,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:14,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:14,739 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:14,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:14,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:14,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753773640] [2021-08-13 17:52:14,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753773640] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:14,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:14,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:52:14,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648339943] [2021-08-13 17:52:14,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:52:14,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:14,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:52:14,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:52:14,743 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:14,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 834 transitions, 31518 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:14,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:14,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:14,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:16,367 INFO L129 PetriNetUnfolder]: 1427/3555 cut-off events. [2021-08-13 17:52:16,367 INFO L130 PetriNetUnfolder]: For 1260/1260 co-relation queries the response was YES. [2021-08-13 17:52:16,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52112 conditions, 3555 events. 1427/3555 cut-off events. For 1260/1260 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 31708 event pairs, 163 based on Foata normal form. 1/3550 useless extension candidates. Maximal degree in co-relation 51502. Up to 1944 conditions per place. [2021-08-13 17:52:16,398 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 510 selfloop transitions, 129 changer transitions 223/872 dead transitions. [2021-08-13 17:52:16,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 872 transitions, 34686 flow [2021-08-13 17:52:16,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:52:16,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:52:16,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-08-13 17:52:16,400 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-08-13 17:52:16,400 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-08-13 17:52:16,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-08-13 17:52:16,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:16,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-08-13 17:52:16,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.888888888888886) internal successors, (296), 9 states have internal predecessors, (296), 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) [2021-08-13 17:52:16,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:16,401 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:16,401 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 148 predicate places. [2021-08-13 17:52:16,401 INFO L482 AbstractCegarLoop]: Abstraction has has 187 places, 872 transitions, 34686 flow [2021-08-13 17:52:16,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:16,402 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:16,402 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:16,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-13 17:52:16,402 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:16,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:16,402 INFO L82 PathProgramCache]: Analyzing trace with hash -206023826, now seen corresponding path program 20 times [2021-08-13 17:52:16,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:16,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669607325] [2021-08-13 17:52:16,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:16,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:16,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:16,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:16,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:16,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:16,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:16,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:16,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:16,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:16,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:16,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:16,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:16,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:16,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:16,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:16,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:16,451 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:16,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:16,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:16,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:16,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669607325] [2021-08-13 17:52:16,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669607325] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:16,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:16,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:52:16,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030709845] [2021-08-13 17:52:16,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:52:16,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:16,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:52:16,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:52:16,455 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:16,455 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 872 transitions, 34686 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 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) [2021-08-13 17:52:16,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:16,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:16,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:18,610 INFO L129 PetriNetUnfolder]: 1494/3729 cut-off events. [2021-08-13 17:52:18,610 INFO L130 PetriNetUnfolder]: For 1379/1379 co-relation queries the response was YES. [2021-08-13 17:52:18,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56979 conditions, 3729 events. 1494/3729 cut-off events. For 1379/1379 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 33678 event pairs, 104 based on Foata normal form. 1/3724 useless extension candidates. Maximal degree in co-relation 56310. Up to 2163 conditions per place. [2021-08-13 17:52:18,650 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 619 selfloop transitions, 48 changer transitions 223/900 dead transitions. [2021-08-13 17:52:18,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 900 transitions, 37621 flow [2021-08-13 17:52:18,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:52:18,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:52:18,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2021-08-13 17:52:18,651 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7694805194805194 [2021-08-13 17:52:18,651 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 237 transitions. [2021-08-13 17:52:18,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 237 transitions. [2021-08-13 17:52:18,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:18,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 237 transitions. [2021-08-13 17:52:18,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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) [2021-08-13 17:52:18,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 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) [2021-08-13 17:52:18,652 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 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) [2021-08-13 17:52:18,652 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 154 predicate places. [2021-08-13 17:52:18,652 INFO L482 AbstractCegarLoop]: Abstraction has has 193 places, 900 transitions, 37621 flow [2021-08-13 17:52:18,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 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) [2021-08-13 17:52:18,653 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:18,653 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:18,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-13 17:52:18,653 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:18,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:18,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1672089880, now seen corresponding path program 21 times [2021-08-13 17:52:18,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:18,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299470849] [2021-08-13 17:52:18,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:18,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:18,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:18,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:18,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:18,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:18,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:18,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:18,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:18,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:18,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:18,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:18,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:18,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:18,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:18,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:18,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:18,725 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:18,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:18,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:18,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299470849] [2021-08-13 17:52:18,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299470849] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:18,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:18,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:52:18,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826728565] [2021-08-13 17:52:18,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:52:18,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:18,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:52:18,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:52:18,730 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:18,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 900 transitions, 37621 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:18,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:18,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:18,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:21,006 INFO L129 PetriNetUnfolder]: 1516/3789 cut-off events. [2021-08-13 17:52:21,007 INFO L130 PetriNetUnfolder]: For 1427/1427 co-relation queries the response was YES. [2021-08-13 17:52:21,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60685 conditions, 3789 events. 1516/3789 cut-off events. For 1427/1427 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 34368 event pairs, 108 based on Foata normal form. 1/3784 useless extension candidates. Maximal degree in co-relation 60015. Up to 2212 conditions per place. [2021-08-13 17:52:21,047 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 629 selfloop transitions, 65 changer transitions 223/927 dead transitions. [2021-08-13 17:52:21,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 927 transitions, 40589 flow [2021-08-13 17:52:21,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:52:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:52:21,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-08-13 17:52:21,049 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-08-13 17:52:21,049 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-08-13 17:52:21,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-08-13 17:52:21,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:21,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-08-13 17:52:21,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.5) internal successors, (268), 8 states have internal predecessors, (268), 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) [2021-08-13 17:52:21,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:21,050 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:21,051 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 161 predicate places. [2021-08-13 17:52:21,051 INFO L482 AbstractCegarLoop]: Abstraction has has 200 places, 927 transitions, 40589 flow [2021-08-13 17:52:21,051 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:21,051 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:21,051 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:21,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-13 17:52:21,051 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:21,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:21,052 INFO L82 PathProgramCache]: Analyzing trace with hash -174073140, now seen corresponding path program 22 times [2021-08-13 17:52:21,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:21,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188610261] [2021-08-13 17:52:21,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:21,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:21,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:21,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:21,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:21,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:21,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:21,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:21,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:21,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:21,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:21,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:21,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:21,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:21,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:21,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:21,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:21,109 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:21,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:21,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:21,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188610261] [2021-08-13 17:52:21,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188610261] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:21,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:21,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:52:21,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674499761] [2021-08-13 17:52:21,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:52:21,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:21,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:52:21,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:52:21,113 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:21,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 927 transitions, 40589 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:21,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:21,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:21,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:23,685 INFO L129 PetriNetUnfolder]: 1546/3899 cut-off events. [2021-08-13 17:52:23,685 INFO L130 PetriNetUnfolder]: For 1523/1523 co-relation queries the response was YES. [2021-08-13 17:52:23,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64742 conditions, 3899 events. 1546/3899 cut-off events. For 1523/1523 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 35849 event pairs, 98 based on Foata normal form. 1/3894 useless extension candidates. Maximal degree in co-relation 64016. Up to 2268 conditions per place. [2021-08-13 17:52:23,722 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 634 selfloop transitions, 94 changer transitions 223/961 dead transitions. [2021-08-13 17:52:23,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 961 transitions, 44027 flow [2021-08-13 17:52:23,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:52:23,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:52:23,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 270 transitions. [2021-08-13 17:52:23,723 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2021-08-13 17:52:23,723 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 270 transitions. [2021-08-13 17:52:23,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 270 transitions. [2021-08-13 17:52:23,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:23,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 270 transitions. [2021-08-13 17:52:23,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.75) internal successors, (270), 8 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:52:23,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:23,724 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:23,725 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 168 predicate places. [2021-08-13 17:52:23,725 INFO L482 AbstractCegarLoop]: Abstraction has has 207 places, 961 transitions, 44027 flow [2021-08-13 17:52:23,725 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:23,725 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:23,725 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:23,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-13 17:52:23,725 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:23,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:23,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1398778186, now seen corresponding path program 23 times [2021-08-13 17:52:23,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:23,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193401780] [2021-08-13 17:52:23,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:23,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:23,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:23,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:23,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:23,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:23,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:23,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:23,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:23,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:23,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:23,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:23,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:23,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:23,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:23,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:23,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:23,798 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:23,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:23,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:23,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:23,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193401780] [2021-08-13 17:52:23,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193401780] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:23,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:23,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:52:23,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344800478] [2021-08-13 17:52:23,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:52:23,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:23,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:52:23,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:52:23,802 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:23,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 961 transitions, 44027 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:23,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:23,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:23,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:26,733 INFO L129 PetriNetUnfolder]: 1622/4111 cut-off events. [2021-08-13 17:52:26,734 INFO L130 PetriNetUnfolder]: For 1630/1630 co-relation queries the response was YES. [2021-08-13 17:52:26,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70746 conditions, 4111 events. 1622/4111 cut-off events. For 1630/1630 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 38395 event pairs, 76 based on Foata normal form. 1/4106 useless extension candidates. Maximal degree in co-relation 69957. Up to 2399 conditions per place. [2021-08-13 17:52:26,782 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 733 selfloop transitions, 59 changer transitions 224/1026 dead transitions. [2021-08-13 17:52:26,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 1026 transitions, 49074 flow [2021-08-13 17:52:26,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:52:26,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:52:26,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-08-13 17:52:26,783 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-08-13 17:52:26,783 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-08-13 17:52:26,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-08-13 17:52:26,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:26,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-08-13 17:52:26,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.5) internal successors, (268), 8 states have internal predecessors, (268), 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) [2021-08-13 17:52:26,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:26,785 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:26,785 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 175 predicate places. [2021-08-13 17:52:26,785 INFO L482 AbstractCegarLoop]: Abstraction has has 214 places, 1026 transitions, 49074 flow [2021-08-13 17:52:26,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:26,785 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:26,785 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:26,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-13 17:52:26,786 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:26,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:26,786 INFO L82 PathProgramCache]: Analyzing trace with hash -442799866, now seen corresponding path program 24 times [2021-08-13 17:52:26,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:26,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203695689] [2021-08-13 17:52:26,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:26,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:26,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:26,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:26,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:26,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:26,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:26,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:26,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:26,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:26,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:26,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:26,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:26,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:26,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:26,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:26,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:26,848 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:26,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:26,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:26,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:26,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203695689] [2021-08-13 17:52:26,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203695689] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:26,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:26,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:52:26,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161779098] [2021-08-13 17:52:26,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:52:26,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:26,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:52:26,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:52:26,853 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:26,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 1026 transitions, 49074 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:26,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:26,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:26,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:30,025 INFO L129 PetriNetUnfolder]: 1635/4163 cut-off events. [2021-08-13 17:52:30,025 INFO L130 PetriNetUnfolder]: For 1694/1694 co-relation queries the response was YES. [2021-08-13 17:52:30,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74310 conditions, 4163 events. 1635/4163 cut-off events. For 1694/1694 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 39052 event pairs, 79 based on Foata normal form. 1/4157 useless extension candidates. Maximal degree in co-relation 73495. Up to 2426 conditions per place. [2021-08-13 17:52:30,069 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 740 selfloop transitions, 82 changer transitions 225/1057 dead transitions. [2021-08-13 17:52:30,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 1057 transitions, 52656 flow [2021-08-13 17:52:30,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:52:30,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:52:30,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 17:52:30,070 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 17:52:30,070 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 17:52:30,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 17:52:30,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:30,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 17:52:30,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 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) [2021-08-13 17:52:30,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:30,071 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:30,072 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 182 predicate places. [2021-08-13 17:52:30,072 INFO L482 AbstractCegarLoop]: Abstraction has has 221 places, 1057 transitions, 52656 flow [2021-08-13 17:52:30,072 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:30,072 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:30,072 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:30,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-13 17:52:30,072 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:30,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:30,072 INFO L82 PathProgramCache]: Analyzing trace with hash -649609574, now seen corresponding path program 25 times [2021-08-13 17:52:30,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:30,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737173693] [2021-08-13 17:52:30,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:30,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:30,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:30,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:30,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:30,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:30,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:30,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:30,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:30,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:30,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:30,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:30,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:30,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:30,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:30,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:30,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:30,139 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:30,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:30,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:30,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:30,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737173693] [2021-08-13 17:52:30,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737173693] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:30,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:30,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:52:30,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351083002] [2021-08-13 17:52:30,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:52:30,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:30,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:52:30,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:52:30,143 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:30,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 1057 transitions, 52656 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:30,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:30,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:30,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:33,823 INFO L129 PetriNetUnfolder]: 1652/4224 cut-off events. [2021-08-13 17:52:33,824 INFO L130 PetriNetUnfolder]: For 1759/1759 co-relation queries the response was YES. [2021-08-13 17:52:33,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78094 conditions, 4224 events. 1652/4224 cut-off events. For 1759/1759 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 39899 event pairs, 79 based on Foata normal form. 1/4219 useless extension candidates. Maximal degree in co-relation 77241. Up to 2459 conditions per place. [2021-08-13 17:52:33,865 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 708 selfloop transitions, 112 changer transitions 248/1078 dead transitions. [2021-08-13 17:52:33,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 1078 transitions, 55842 flow [2021-08-13 17:52:33,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:52:33,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:52:33,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-08-13 17:52:33,866 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-08-13 17:52:33,866 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-08-13 17:52:33,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-08-13 17:52:33,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:33,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-08-13 17:52:33,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 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) [2021-08-13 17:52:33,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:33,868 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:33,868 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 190 predicate places. [2021-08-13 17:52:33,868 INFO L482 AbstractCegarLoop]: Abstraction has has 229 places, 1078 transitions, 55842 flow [2021-08-13 17:52:33,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:33,868 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:33,868 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:33,869 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-13 17:52:33,869 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:33,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:33,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1618659668, now seen corresponding path program 26 times [2021-08-13 17:52:33,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:33,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352585561] [2021-08-13 17:52:33,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:33,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:33,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:33,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:33,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:33,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:33,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:33,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:33,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:33,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:33,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:33,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:33,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:33,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:33,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:33,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:33,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:33,939 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:33,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:33,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:33,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:33,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352585561] [2021-08-13 17:52:33,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352585561] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:33,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:33,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:52:33,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764934544] [2021-08-13 17:52:33,942 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:52:33,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:33,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:52:33,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:52:33,943 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:33,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 1078 transitions, 55842 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:33,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:33,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:33,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:37,543 INFO L129 PetriNetUnfolder]: 1654/4255 cut-off events. [2021-08-13 17:52:37,544 INFO L130 PetriNetUnfolder]: For 1827/1827 co-relation queries the response was YES. [2021-08-13 17:52:37,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81440 conditions, 4255 events. 1654/4255 cut-off events. For 1827/1827 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 40380 event pairs, 84 based on Foata normal form. 1/4250 useless extension candidates. Maximal degree in co-relation 80566. Up to 2474 conditions per place. [2021-08-13 17:52:37,604 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 666 selfloop transitions, 101 changer transitions 316/1093 dead transitions. [2021-08-13 17:52:37,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 1093 transitions, 58788 flow [2021-08-13 17:52:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:52:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:52:37,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-08-13 17:52:37,605 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-08-13 17:52:37,605 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-08-13 17:52:37,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-08-13 17:52:37,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:37,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-08-13 17:52:37,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 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) [2021-08-13 17:52:37,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:37,607 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:37,607 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 198 predicate places. [2021-08-13 17:52:37,607 INFO L482 AbstractCegarLoop]: Abstraction has has 237 places, 1093 transitions, 58788 flow [2021-08-13 17:52:37,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:37,607 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:37,607 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:37,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-13 17:52:37,607 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:37,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:37,608 INFO L82 PathProgramCache]: Analyzing trace with hash 802891898, now seen corresponding path program 27 times [2021-08-13 17:52:37,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:37,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011377183] [2021-08-13 17:52:37,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:37,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:37,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:37,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:37,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:37,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:37,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:37,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:37,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:37,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:37,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:37,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:37,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:37,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:37,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:37,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:37,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:37,672 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:37,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:37,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:37,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011377183] [2021-08-13 17:52:37,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011377183] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:37,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:37,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:52:37,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056497529] [2021-08-13 17:52:37,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:52:37,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:37,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:52:37,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:52:37,675 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:37,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 1093 transitions, 58788 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:37,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:37,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:37,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:41,580 INFO L129 PetriNetUnfolder]: 1674/4327 cut-off events. [2021-08-13 17:52:41,580 INFO L130 PetriNetUnfolder]: For 1913/1913 co-relation queries the response was YES. [2021-08-13 17:52:41,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85554 conditions, 4327 events. 1674/4327 cut-off events. For 1913/1913 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 41391 event pairs, 76 based on Foata normal form. 1/4322 useless extension candidates. Maximal degree in co-relation 84647. Up to 2514 conditions per place. [2021-08-13 17:52:41,621 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 727 selfloop transitions, 72 changer transitions 339/1148 dead transitions. [2021-08-13 17:52:41,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 1148 transitions, 64094 flow [2021-08-13 17:52:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:52:41,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:52:41,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 17:52:41,622 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 17:52:41,622 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 17:52:41,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 17:52:41,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:41,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 17:52:41,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 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) [2021-08-13 17:52:41,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:41,624 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:41,624 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 205 predicate places. [2021-08-13 17:52:41,624 INFO L482 AbstractCegarLoop]: Abstraction has has 244 places, 1148 transitions, 64094 flow [2021-08-13 17:52:41,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:41,624 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:41,624 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:41,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-13 17:52:41,624 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:41,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:41,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1060028758, now seen corresponding path program 28 times [2021-08-13 17:52:41,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:41,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829702811] [2021-08-13 17:52:41,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:41,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:41,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:41,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:41,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:41,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:41,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:41,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:41,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:41,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:41,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:41,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:41,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:41,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:41,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:41,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:41,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:41,680 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:41,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:41,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:41,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:41,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829702811] [2021-08-13 17:52:41,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829702811] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:41,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:41,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:52:41,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405847323] [2021-08-13 17:52:41,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:52:41,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:41,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:52:41,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:52:41,683 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:41,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 1148 transitions, 64094 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:41,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:41,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:41,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:45,995 INFO L129 PetriNetUnfolder]: 1743/4509 cut-off events. [2021-08-13 17:52:45,996 INFO L130 PetriNetUnfolder]: For 2020/2020 co-relation queries the response was YES. [2021-08-13 17:52:46,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92417 conditions, 4509 events. 1743/4509 cut-off events. For 2020/2020 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 43449 event pairs, 83 based on Foata normal form. 1/4503 useless extension candidates. Maximal degree in co-relation 91481. Up to 2645 conditions per place. [2021-08-13 17:52:46,039 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 791 selfloop transitions, 90 changer transitions 344/1235 dead transitions. [2021-08-13 17:52:46,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 1235 transitions, 71436 flow [2021-08-13 17:52:46,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:52:46,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:52:46,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2021-08-13 17:52:46,040 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7585227272727273 [2021-08-13 17:52:46,040 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 267 transitions. [2021-08-13 17:52:46,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 267 transitions. [2021-08-13 17:52:46,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:46,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 267 transitions. [2021-08-13 17:52:46,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.375) internal successors, (267), 8 states have internal predecessors, (267), 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) [2021-08-13 17:52:46,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:46,041 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:46,042 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 212 predicate places. [2021-08-13 17:52:46,042 INFO L482 AbstractCegarLoop]: Abstraction has has 251 places, 1235 transitions, 71436 flow [2021-08-13 17:52:46,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:46,042 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:46,042 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:46,042 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-13 17:52:46,042 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:46,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:46,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1860646236, now seen corresponding path program 29 times [2021-08-13 17:52:46,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:46,043 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186598077] [2021-08-13 17:52:46,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:46,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:46,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:46,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:46,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:46,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:46,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:46,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:46,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:46,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:46,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:46,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:46,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:46,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:46,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:46,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:46,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:46,099 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:46,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:46,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:46,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:46,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186598077] [2021-08-13 17:52:46,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186598077] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:46,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:46,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:52:46,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679644279] [2021-08-13 17:52:46,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:52:46,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:46,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:52:46,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:52:46,103 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:46,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 1235 transitions, 71436 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:46,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:46,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:46,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:51,150 INFO L129 PetriNetUnfolder]: 1758/4559 cut-off events. [2021-08-13 17:52:51,150 INFO L130 PetriNetUnfolder]: For 2093/2093 co-relation queries the response was YES. [2021-08-13 17:52:51,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96558 conditions, 4559 events. 1758/4559 cut-off events. For 2093/2093 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 44151 event pairs, 83 based on Foata normal form. 1/4553 useless extension candidates. Maximal degree in co-relation 95608. Up to 2701 conditions per place. [2021-08-13 17:52:51,197 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 829 selfloop transitions, 70 changer transitions 350/1259 dead transitions. [2021-08-13 17:52:51,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 1259 transitions, 75326 flow [2021-08-13 17:52:51,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:52:51,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:52:51,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2021-08-13 17:52:51,198 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2021-08-13 17:52:51,198 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 266 transitions. [2021-08-13 17:52:51,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 266 transitions. [2021-08-13 17:52:51,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:51,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 266 transitions. [2021-08-13 17:52:51,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.25) internal successors, (266), 8 states have internal predecessors, (266), 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) [2021-08-13 17:52:51,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:51,199 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:52:51,200 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 219 predicate places. [2021-08-13 17:52:51,200 INFO L482 AbstractCegarLoop]: Abstraction has has 258 places, 1259 transitions, 75326 flow [2021-08-13 17:52:51,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:52:51,200 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:51,200 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:51,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-13 17:52:51,200 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:51,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:51,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1040241570, now seen corresponding path program 30 times [2021-08-13 17:52:51,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:51,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346583414] [2021-08-13 17:52:51,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:51,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:51,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:51,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:51,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:51,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:51,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:51,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:51,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:51,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:51,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:51,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:51,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:51,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:51,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:51,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:51,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:51,284 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:51,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:51,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:51,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346583414] [2021-08-13 17:52:51,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346583414] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:51,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:51,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:52:51,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793134535] [2021-08-13 17:52:51,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:52:51,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:51,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:52:51,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:52:51,290 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:51,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 1259 transitions, 75326 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:51,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:51,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:51,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:56,881 INFO L129 PetriNetUnfolder]: 1769/4607 cut-off events. [2021-08-13 17:52:56,881 INFO L130 PetriNetUnfolder]: For 2166/2166 co-relation queries the response was YES. [2021-08-13 17:52:56,895 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100472 conditions, 4607 events. 1769/4607 cut-off events. For 2166/2166 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 44773 event pairs, 86 based on Foata normal form. 1/4601 useless extension candidates. Maximal degree in co-relation 99497. Up to 2725 conditions per place. [2021-08-13 17:52:56,930 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 784 selfloop transitions, 125 changer transitions 357/1276 dead transitions. [2021-08-13 17:52:56,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 1276 transitions, 78878 flow [2021-08-13 17:52:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:52:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:52:56,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-08-13 17:52:56,931 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-08-13 17:52:56,931 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-08-13 17:52:56,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-08-13 17:52:56,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:56,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-08-13 17:52:56,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.22222222222222) internal successors, (299), 9 states have internal predecessors, (299), 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) [2021-08-13 17:52:56,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:56,933 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:52:56,933 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 227 predicate places. [2021-08-13 17:52:56,933 INFO L482 AbstractCegarLoop]: Abstraction has has 266 places, 1276 transitions, 78878 flow [2021-08-13 17:52:56,933 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:56,933 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:56,933 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:56,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-13 17:52:56,933 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:56,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:56,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1477888140, now seen corresponding path program 31 times [2021-08-13 17:52:56,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:56,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167198087] [2021-08-13 17:52:56,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:56,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:56,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:56,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:56,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:56,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:56,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:56,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:56,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:56,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:56,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:56,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:56,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:52:56,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:56,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:52:56,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:56,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:57,015 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:52:57,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:57,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:57,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167198087] [2021-08-13 17:52:57,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167198087] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:57,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:57,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:52:57,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377337254] [2021-08-13 17:52:57,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:52:57,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:57,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:52:57,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:52:57,018 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:52:57,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 1276 transitions, 78878 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:52:57,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:57,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:52:57,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:53:02,687 INFO L129 PetriNetUnfolder]: 1792/4668 cut-off events. [2021-08-13 17:53:02,687 INFO L130 PetriNetUnfolder]: For 2238/2238 co-relation queries the response was YES. [2021-08-13 17:53:02,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104969 conditions, 4668 events. 1792/4668 cut-off events. For 2238/2238 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 45549 event pairs, 82 based on Foata normal form. 1/4662 useless extension candidates. Maximal degree in co-relation 103975. Up to 2766 conditions per place. [2021-08-13 17:53:02,744 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 825 selfloop transitions, 106 changer transitions 358/1299 dead transitions. [2021-08-13 17:53:02,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 1299 transitions, 82882 flow [2021-08-13 17:53:02,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:53:02,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:53:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 17:53:02,745 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 17:53:02,745 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 17:53:02,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 17:53:02,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:53:02,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 17:53:02,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 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) [2021-08-13 17:53:02,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:53:02,747 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:53:02,747 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 235 predicate places. [2021-08-13 17:53:02,747 INFO L482 AbstractCegarLoop]: Abstraction has has 274 places, 1299 transitions, 82882 flow [2021-08-13 17:53:02,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:53:02,747 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:53:02,747 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:53:02,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-13 17:53:02,748 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:53:02,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:53:02,748 INFO L82 PathProgramCache]: Analyzing trace with hash 71468734, now seen corresponding path program 32 times [2021-08-13 17:53:02,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:53:02,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278896557] [2021-08-13 17:53:02,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:53:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:53:02,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:02,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:02,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:02,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:02,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:02,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:02,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:02,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:02,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:02,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:02,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:02,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:53:02,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:02,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:02,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:02,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:02,813 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:53:02,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:53:02,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:53:02,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:53:02,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278896557] [2021-08-13 17:53:02,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278896557] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:53:02,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:53:02,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:53:02,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716660949] [2021-08-13 17:53:02,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:53:02,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:53:02,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:53:02,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:53:02,817 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:53:02,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 1299 transitions, 82882 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:53:02,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:53:02,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:53:02,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:53:09,186 INFO L129 PetriNetUnfolder]: 1828/4766 cut-off events. [2021-08-13 17:53:09,187 INFO L130 PetriNetUnfolder]: For 2309/2309 co-relation queries the response was YES. [2021-08-13 17:53:09,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110325 conditions, 4766 events. 1828/4766 cut-off events. For 2309/2309 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 46688 event pairs, 83 based on Foata normal form. 1/4760 useless extension candidates. Maximal degree in co-relation 109309. Up to 2830 conditions per place. [2021-08-13 17:53:09,243 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 890 selfloop transitions, 79 changer transitions 359/1338 dead transitions. [2021-08-13 17:53:09,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1338 transitions, 88034 flow [2021-08-13 17:53:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:53:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:53:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 17:53:09,245 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 17:53:09,245 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 17:53:09,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 17:53:09,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:53:09,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 17:53:09,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 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) [2021-08-13 17:53:09,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:53:09,247 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:53:09,247 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 243 predicate places. [2021-08-13 17:53:09,247 INFO L482 AbstractCegarLoop]: Abstraction has has 282 places, 1338 transitions, 88034 flow [2021-08-13 17:53:09,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:53:09,247 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:53:09,247 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:53:09,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-13 17:53:09,248 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:53:09,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:53:09,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1077126890, now seen corresponding path program 33 times [2021-08-13 17:53:09,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:53:09,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898383007] [2021-08-13 17:53:09,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:53:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:53:09,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:09,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:09,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:09,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:09,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:09,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:09,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:09,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:09,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:09,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:09,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:09,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:53:09,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:09,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:09,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:09,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:09,333 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:53:09,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:53:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:53:09,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:53:09,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898383007] [2021-08-13 17:53:09,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898383007] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:53:09,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:53:09,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:53:09,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359909273] [2021-08-13 17:53:09,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 17:53:09,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:53:09,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 17:53:09,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 17:53:09,337 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:53:09,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 1338 transitions, 88034 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:53:09,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:53:09,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:53:09,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:53:16,444 INFO L129 PetriNetUnfolder]: 1851/4842 cut-off events. [2021-08-13 17:53:16,444 INFO L130 PetriNetUnfolder]: For 2405/2405 co-relation queries the response was YES. [2021-08-13 17:53:16,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114944 conditions, 4842 events. 1851/4842 cut-off events. For 2405/2405 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 47720 event pairs, 90 based on Foata normal form. 1/4835 useless extension candidates. Maximal degree in co-relation 113886. Up to 2868 conditions per place. [2021-08-13 17:53:16,500 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 815 selfloop transitions, 148 changer transitions 389/1362 dead transitions. [2021-08-13 17:53:16,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1362 transitions, 92322 flow [2021-08-13 17:53:16,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 17:53:16,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 17:53:16,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 330 transitions. [2021-08-13 17:53:16,501 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 17:53:16,501 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 330 transitions. [2021-08-13 17:53:16,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 330 transitions. [2021-08-13 17:53:16,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:53:16,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 330 transitions. [2021-08-13 17:53:16,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 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) [2021-08-13 17:53:16,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:53:16,503 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:53:16,503 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 252 predicate places. [2021-08-13 17:53:16,503 INFO L482 AbstractCegarLoop]: Abstraction has has 291 places, 1362 transitions, 92322 flow [2021-08-13 17:53:16,503 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:53:16,503 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:53:16,503 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:53:16,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-13 17:53:16,504 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:53:16,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:53:16,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1826824290, now seen corresponding path program 34 times [2021-08-13 17:53:16,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:53:16,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513383217] [2021-08-13 17:53:16,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:53:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:53:16,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:16,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:16,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:16,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:16,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:16,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:16,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:16,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:16,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:16,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:16,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:16,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:53:16,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:16,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:16,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:16,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:16,570 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:53:16,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:53:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:53:16,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:53:16,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513383217] [2021-08-13 17:53:16,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513383217] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:53:16,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:53:16,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:53:16,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145171356] [2021-08-13 17:53:16,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:53:16,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:53:16,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:53:16,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:53:16,574 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:53:16,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 1362 transitions, 92322 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:53:16,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:53:16,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:53:16,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:53:23,676 INFO L129 PetriNetUnfolder]: 1870/4926 cut-off events. [2021-08-13 17:53:23,677 INFO L130 PetriNetUnfolder]: For 2500/2500 co-relation queries the response was YES. [2021-08-13 17:53:23,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120011 conditions, 4926 events. 1870/4926 cut-off events. For 2500/2500 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 48866 event pairs, 92 based on Foata normal form. 1/4919 useless extension candidates. Maximal degree in co-relation 118920. Up to 2917 conditions per place. [2021-08-13 17:53:23,733 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 902 selfloop transitions, 98 changer transitions 397/1407 dead transitions. [2021-08-13 17:53:23,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1407 transitions, 98176 flow [2021-08-13 17:53:23,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:53:23,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:53:23,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-08-13 17:53:23,734 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-08-13 17:53:23,734 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-08-13 17:53:23,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-08-13 17:53:23,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:53:23,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-08-13 17:53:23,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.111111111111114) internal successors, (298), 9 states have internal predecessors, (298), 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) [2021-08-13 17:53:23,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:53:23,735 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:53:23,736 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 260 predicate places. [2021-08-13 17:53:23,736 INFO L482 AbstractCegarLoop]: Abstraction has has 299 places, 1407 transitions, 98176 flow [2021-08-13 17:53:23,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:53:23,736 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:53:23,736 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:53:23,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-13 17:53:23,736 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:53:23,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:53:23,737 INFO L82 PathProgramCache]: Analyzing trace with hash -879345990, now seen corresponding path program 35 times [2021-08-13 17:53:23,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:53:23,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214478639] [2021-08-13 17:53:23,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:53:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:53:23,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:23,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:23,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:23,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:23,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:23,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:23,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:23,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:23,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:23,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:23,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:23,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:23,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:23,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:23,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:23,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:23,807 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:53:23,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:53:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:53:23,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:53:23,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214478639] [2021-08-13 17:53:23,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214478639] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:53:23,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:53:23,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:53:23,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251265597] [2021-08-13 17:53:23,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:53:23,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:53:23,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:53:23,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:53:23,810 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:53:23,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 1407 transitions, 98176 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:53:23,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:53:23,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:53:23,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:53:32,018 INFO L129 PetriNetUnfolder]: 1889/5003 cut-off events. [2021-08-13 17:53:32,018 INFO L130 PetriNetUnfolder]: For 2606/2606 co-relation queries the response was YES. [2021-08-13 17:53:32,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124737 conditions, 5003 events. 1889/5003 cut-off events. For 2606/2606 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 49990 event pairs, 100 based on Foata normal form. 1/4997 useless extension candidates. Maximal degree in co-relation 123595. Up to 2953 conditions per place. [2021-08-13 17:53:32,077 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 884 selfloop transitions, 137 changer transitions 397/1428 dead transitions. [2021-08-13 17:53:32,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 1428 transitions, 102507 flow [2021-08-13 17:53:32,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:53:32,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:53:32,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 302 transitions. [2021-08-13 17:53:32,078 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7626262626262627 [2021-08-13 17:53:32,078 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 302 transitions. [2021-08-13 17:53:32,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 302 transitions. [2021-08-13 17:53:32,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:53:32,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 302 transitions. [2021-08-13 17:53:32,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.55555555555556) internal successors, (302), 9 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) [2021-08-13 17:53:32,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:53:32,079 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:53:32,079 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 268 predicate places. [2021-08-13 17:53:32,079 INFO L482 AbstractCegarLoop]: Abstraction has has 307 places, 1428 transitions, 102507 flow [2021-08-13 17:53:32,079 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:53:32,079 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:53:32,080 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:53:32,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-13 17:53:32,080 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:53:32,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:53:32,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1908959384, now seen corresponding path program 36 times [2021-08-13 17:53:32,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:53:32,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892160135] [2021-08-13 17:53:32,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:53:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:53:32,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:32,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:32,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:32,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:32,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:32,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:32,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:32,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:32,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:32,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:32,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:32,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:53:32,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:32,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:32,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:32,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:32,147 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:53:32,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:53:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:53:32,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:53:32,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892160135] [2021-08-13 17:53:32,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892160135] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:53:32,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:53:32,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:53:32,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564908246] [2021-08-13 17:53:32,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:53:32,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:53:32,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:53:32,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:53:32,150 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:53:32,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 1428 transitions, 102507 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:53:32,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:53:32,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:53:32,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:53:40,416 INFO L129 PetriNetUnfolder]: 1912/5098 cut-off events. [2021-08-13 17:53:40,416 INFO L130 PetriNetUnfolder]: For 2712/2712 co-relation queries the response was YES. [2021-08-13 17:53:40,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130040 conditions, 5098 events. 1912/5098 cut-off events. For 2712/2712 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 51388 event pairs, 97 based on Foata normal form. 1/5089 useless extension candidates. Maximal degree in co-relation 128860. Up to 3003 conditions per place. [2021-08-13 17:53:40,474 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 953 selfloop transitions, 104 changer transitions 398/1465 dead transitions. [2021-08-13 17:53:40,474 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1465 transitions, 108081 flow [2021-08-13 17:53:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:53:40,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:53:40,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-08-13 17:53:40,475 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-08-13 17:53:40,475 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-08-13 17:53:40,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-08-13 17:53:40,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:53:40,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-08-13 17:53:40,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.888888888888886) internal successors, (296), 9 states have internal predecessors, (296), 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) [2021-08-13 17:53:40,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:53:40,477 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:53:40,477 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 276 predicate places. [2021-08-13 17:53:40,477 INFO L482 AbstractCegarLoop]: Abstraction has has 315 places, 1465 transitions, 108081 flow [2021-08-13 17:53:40,477 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:53:40,477 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:53:40,477 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:53:40,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-13 17:53:40,478 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:53:40,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:53:40,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1917158512, now seen corresponding path program 37 times [2021-08-13 17:53:40,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:53:40,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243144296] [2021-08-13 17:53:40,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:53:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:53:40,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:40,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:40,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:40,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:40,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:40,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:40,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:40,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:40,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:40,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:40,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:40,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:53:40,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:40,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:40,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:40,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:40,554 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:53:40,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:53:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:53:40,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:53:40,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243144296] [2021-08-13 17:53:40,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243144296] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:53:40,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:53:40,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:53:40,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050494177] [2021-08-13 17:53:40,556 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:53:40,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:53:40,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:53:40,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:53:40,557 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:53:40,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 1465 transitions, 108081 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:53:40,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:53:40,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:53:40,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:53:50,034 INFO L129 PetriNetUnfolder]: 1947/5204 cut-off events. [2021-08-13 17:53:50,034 INFO L130 PetriNetUnfolder]: For 2799/2799 co-relation queries the response was YES. [2021-08-13 17:53:50,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136142 conditions, 5204 events. 1947/5204 cut-off events. For 2799/2799 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 52745 event pairs, 97 based on Foata normal form. 1/5195 useless extension candidates. Maximal degree in co-relation 134952. Up to 3072 conditions per place. [2021-08-13 17:53:50,095 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1019 selfloop transitions, 83 changer transitions 401/1513 dead transitions. [2021-08-13 17:53:50,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 1513 transitions, 114639 flow [2021-08-13 17:53:50,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:53:50,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:53:50,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 17:53:50,097 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 17:53:50,097 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 17:53:50,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 17:53:50,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:53:50,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 17:53:50,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 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) [2021-08-13 17:53:50,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:53:50,098 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:53:50,098 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 284 predicate places. [2021-08-13 17:53:50,098 INFO L482 AbstractCegarLoop]: Abstraction has has 323 places, 1513 transitions, 114639 flow [2021-08-13 17:53:50,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:53:50,098 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:53:50,098 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:53:50,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-13 17:53:50,098 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:53:50,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:53:50,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1004688822, now seen corresponding path program 38 times [2021-08-13 17:53:50,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:53:50,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57285213] [2021-08-13 17:53:50,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:53:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:53:50,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:50,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:50,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:50,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:50,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:50,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:50,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:50,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:50,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:50,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:50,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:50,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:53:50,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:50,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:53:50,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:50,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:50,165 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:53:50,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:53:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:53:50,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:53:50,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57285213] [2021-08-13 17:53:50,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57285213] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:53:50,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:53:50,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:53:50,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804258739] [2021-08-13 17:53:50,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:53:50,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:53:50,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:53:50,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:53:50,169 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:53:50,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 1513 transitions, 114639 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:53:50,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:53:50,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:53:50,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:00,700 INFO L129 PetriNetUnfolder]: 1965/5292 cut-off events. [2021-08-13 17:54:00,701 INFO L130 PetriNetUnfolder]: For 2899/2899 co-relation queries the response was YES. [2021-08-13 17:54:00,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141468 conditions, 5292 events. 1965/5292 cut-off events. For 2899/2899 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 54059 event pairs, 98 based on Foata normal form. 1/5283 useless extension candidates. Maximal degree in co-relation 140235. Up to 3117 conditions per place. [2021-08-13 17:54:00,764 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 991 selfloop transitions, 141 changer transitions 410/1552 dead transitions. [2021-08-13 17:54:00,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 1552 transitions, 120687 flow [2021-08-13 17:54:00,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:54:00,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:54:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-08-13 17:54:00,765 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-08-13 17:54:00,765 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-08-13 17:54:00,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-08-13 17:54:00,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:00,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-08-13 17:54:00,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.111111111111114) internal successors, (298), 9 states have internal predecessors, (298), 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) [2021-08-13 17:54:00,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:54:00,767 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:54:00,767 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 292 predicate places. [2021-08-13 17:54:00,767 INFO L482 AbstractCegarLoop]: Abstraction has has 331 places, 1552 transitions, 120687 flow [2021-08-13 17:54:00,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:54:00,767 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:00,767 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:00,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-13 17:54:00,768 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:54:00,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:00,768 INFO L82 PathProgramCache]: Analyzing trace with hash 537517516, now seen corresponding path program 39 times [2021-08-13 17:54:00,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:00,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029959401] [2021-08-13 17:54:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:00,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:00,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:00,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:00,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:00,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:00,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:54:00,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:00,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:00,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:00,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:54:00,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:00,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:00,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:00,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:54:00,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:00,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:00,844 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:54:00,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:54:00,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:54:00,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:00,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029959401] [2021-08-13 17:54:00,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029959401] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:00,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:00,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:54:00,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025304671] [2021-08-13 17:54:00,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 17:54:00,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:00,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 17:54:00,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 17:54:00,848 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:54:00,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 1552 transitions, 120687 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:54:00,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:00,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:54:00,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:12,418 INFO L129 PetriNetUnfolder]: 1967/5319 cut-off events. [2021-08-13 17:54:12,418 INFO L130 PetriNetUnfolder]: For 2995/2995 co-relation queries the response was YES. [2021-08-13 17:54:12,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145368 conditions, 5319 events. 1967/5319 cut-off events. For 2995/2995 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 54497 event pairs, 98 based on Foata normal form. 1/5310 useless extension candidates. Maximal degree in co-relation 144100. Up to 3125 conditions per place. [2021-08-13 17:54:12,489 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 945 selfloop transitions, 166 changer transitions 439/1560 dead transitions. [2021-08-13 17:54:12,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 1560 transitions, 124411 flow [2021-08-13 17:54:12,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 17:54:12,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 17:54:12,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 333 transitions. [2021-08-13 17:54:12,490 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7568181818181818 [2021-08-13 17:54:12,490 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 333 transitions. [2021-08-13 17:54:12,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 333 transitions. [2021-08-13 17:54:12,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:12,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 333 transitions. [2021-08-13 17:54:12,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.3) internal successors, (333), 10 states have internal predecessors, (333), 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) [2021-08-13 17:54:12,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:54:12,491 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:54:12,492 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 301 predicate places. [2021-08-13 17:54:12,492 INFO L482 AbstractCegarLoop]: Abstraction has has 340 places, 1560 transitions, 124411 flow [2021-08-13 17:54:12,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:54:12,492 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:12,492 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:12,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-13 17:54:12,492 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:54:12,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:12,493 INFO L82 PathProgramCache]: Analyzing trace with hash 266684192, now seen corresponding path program 40 times [2021-08-13 17:54:12,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:12,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799733465] [2021-08-13 17:54:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:12,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:12,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:12,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:12,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:12,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:12,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:54:12,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:12,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:12,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:12,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:54:12,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:12,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:54:12,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:12,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:54:12,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:12,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:12,579 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:54:12,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:54:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:54:12,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:12,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799733465] [2021-08-13 17:54:12,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799733465] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:12,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:12,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:54:12,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699628990] [2021-08-13 17:54:12,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 17:54:12,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:12,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 17:54:12,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 17:54:12,583 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:54:12,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 1560 transitions, 124411 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:54:12,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:12,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:54:12,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:23,753 INFO L129 PetriNetUnfolder]: 1973/5363 cut-off events. [2021-08-13 17:54:23,754 INFO L130 PetriNetUnfolder]: For 3096/3096 co-relation queries the response was YES. [2021-08-13 17:54:23,775 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149908 conditions, 5363 events. 1973/5363 cut-off events. For 3096/3096 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 55158 event pairs, 97 based on Foata normal form. 1/5353 useless extension candidates. Maximal degree in co-relation 148623. Up to 3148 conditions per place. [2021-08-13 17:54:23,821 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1015 selfloop transitions, 106 changer transitions 452/1583 dead transitions. [2021-08-13 17:54:23,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1583 transitions, 129397 flow [2021-08-13 17:54:23,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 17:54:23,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 17:54:23,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 330 transitions. [2021-08-13 17:54:23,822 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 17:54:23,822 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 330 transitions. [2021-08-13 17:54:23,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 330 transitions. [2021-08-13 17:54:23,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:23,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 330 transitions. [2021-08-13 17:54:23,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 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) [2021-08-13 17:54:23,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:54:23,823 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:54:23,823 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 310 predicate places. [2021-08-13 17:54:23,823 INFO L482 AbstractCegarLoop]: Abstraction has has 349 places, 1583 transitions, 129397 flow [2021-08-13 17:54:23,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:54:23,823 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:23,823 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:23,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-13 17:54:23,824 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:54:23,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:23,824 INFO L82 PathProgramCache]: Analyzing trace with hash -675565692, now seen corresponding path program 41 times [2021-08-13 17:54:23,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:23,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885798498] [2021-08-13 17:54:23,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:23,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:23,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:23,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:23,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:23,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:23,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:54:23,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:23,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:23,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:23,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:54:23,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:23,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:54:23,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:23,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:54:23,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:23,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:23,899 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:54:23,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:54:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:54:23,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:23,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885798498] [2021-08-13 17:54:23,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885798498] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:23,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:23,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:54:23,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915553424] [2021-08-13 17:54:23,902 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 17:54:23,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:23,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 17:54:23,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 17:54:23,902 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:54:23,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 1583 transitions, 129397 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:54:23,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:23,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:54:23,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:35,337 INFO L129 PetriNetUnfolder]: 1974/5400 cut-off events. [2021-08-13 17:54:35,337 INFO L130 PetriNetUnfolder]: For 3188/3188 co-relation queries the response was YES. [2021-08-13 17:54:35,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154113 conditions, 5400 events. 1974/5400 cut-off events. For 3188/3188 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 55771 event pairs, 98 based on Foata normal form. 1/5391 useless extension candidates. Maximal degree in co-relation 152805. Up to 3162 conditions per place. [2021-08-13 17:54:35,400 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 962 selfloop transitions, 141 changer transitions 512/1625 dead transitions. [2021-08-13 17:54:35,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 1625 transitions, 136071 flow [2021-08-13 17:54:35,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 17:54:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 17:54:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2021-08-13 17:54:35,401 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7522727272727273 [2021-08-13 17:54:35,401 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 331 transitions. [2021-08-13 17:54:35,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 331 transitions. [2021-08-13 17:54:35,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:35,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 331 transitions. [2021-08-13 17:54:35,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 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) [2021-08-13 17:54:35,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:54:35,402 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:54:35,402 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 319 predicate places. [2021-08-13 17:54:35,402 INFO L482 AbstractCegarLoop]: Abstraction has has 358 places, 1625 transitions, 136071 flow [2021-08-13 17:54:35,403 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:54:35,403 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:35,403 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:35,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-13 17:54:35,403 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:54:35,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:35,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1225973418, now seen corresponding path program 42 times [2021-08-13 17:54:35,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:35,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906845355] [2021-08-13 17:54:35,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:35,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:35,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:35,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:35,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:35,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:35,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:54:35,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:35,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:35,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:35,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:54:35,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:35,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:35,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:35,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:54:35,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:35,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:35,470 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:54:35,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:54:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:54:35,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:35,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906845355] [2021-08-13 17:54:35,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906845355] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:35,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:35,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:54:35,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064770148] [2021-08-13 17:54:35,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:54:35,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:35,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:54:35,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:54:35,477 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:54:35,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 1625 transitions, 136071 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:54:35,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:35,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:54:35,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:46,495 INFO L129 PetriNetUnfolder]: 1976/5421 cut-off events. [2021-08-13 17:54:46,496 INFO L130 PetriNetUnfolder]: For 3289/3289 co-relation queries the response was YES. [2021-08-13 17:54:46,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158032 conditions, 5421 events. 1976/5421 cut-off events. For 3289/3289 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 56168 event pairs, 98 based on Foata normal form. 1/5412 useless extension candidates. Maximal degree in co-relation 156692. Up to 3169 conditions per place. [2021-08-13 17:54:46,564 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 990 selfloop transitions, 120 changer transitions 519/1639 dead transitions. [2021-08-13 17:54:46,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 1639 transitions, 140505 flow [2021-08-13 17:54:46,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:54:46,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:54:46,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-08-13 17:54:46,565 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-08-13 17:54:46,565 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-08-13 17:54:46,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-08-13 17:54:46,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:46,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-08-13 17:54:46,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.22222222222222) internal successors, (299), 9 states have internal predecessors, (299), 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) [2021-08-13 17:54:46,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:54:46,566 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:54:46,566 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 327 predicate places. [2021-08-13 17:54:46,566 INFO L482 AbstractCegarLoop]: Abstraction has has 366 places, 1639 transitions, 140505 flow [2021-08-13 17:54:46,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:54:46,567 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:46,567 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:46,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-13 17:54:46,567 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:54:46,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:46,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1571260094, now seen corresponding path program 43 times [2021-08-13 17:54:46,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:46,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893141412] [2021-08-13 17:54:46,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:46,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:46,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:46,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:46,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:46,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:46,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:54:46,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:46,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:46,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:46,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:54:46,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:46,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:54:46,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:46,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:54:46,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:46,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:46,642 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:54:46,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:54:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:54:46,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:46,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893141412] [2021-08-13 17:54:46,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893141412] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:46,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:46,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:54:46,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488291554] [2021-08-13 17:54:46,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 17:54:46,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:46,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 17:54:46,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 17:54:46,646 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:54:46,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 1639 transitions, 140505 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:54:46,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:46,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:54:46,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:58,260 INFO L129 PetriNetUnfolder]: 1980/5453 cut-off events. [2021-08-13 17:54:58,260 INFO L130 PetriNetUnfolder]: For 3392/3392 co-relation queries the response was YES. [2021-08-13 17:54:58,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162281 conditions, 5453 events. 1980/5453 cut-off events. For 3392/3392 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 56611 event pairs, 102 based on Foata normal form. 1/5443 useless extension candidates. Maximal degree in co-relation 160931. Up to 3183 conditions per place. [2021-08-13 17:54:58,330 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 954 selfloop transitions, 163 changer transitions 526/1653 dead transitions. [2021-08-13 17:54:58,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 1653 transitions, 144995 flow [2021-08-13 17:54:58,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 17:54:58,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 17:54:58,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2021-08-13 17:54:58,331 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7477272727272727 [2021-08-13 17:54:58,331 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 329 transitions. [2021-08-13 17:54:58,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 329 transitions. [2021-08-13 17:54:58,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:58,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 329 transitions. [2021-08-13 17:54:58,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 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) [2021-08-13 17:54:58,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:54:58,333 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:54:58,333 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 336 predicate places. [2021-08-13 17:54:58,333 INFO L482 AbstractCegarLoop]: Abstraction has has 375 places, 1653 transitions, 144995 flow [2021-08-13 17:54:58,333 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:54:58,333 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:58,333 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:58,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-13 17:54:58,333 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:54:58,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:58,333 INFO L82 PathProgramCache]: Analyzing trace with hash -913927208, now seen corresponding path program 44 times [2021-08-13 17:54:58,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:58,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747675861] [2021-08-13 17:54:58,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:58,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:58,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:58,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:58,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:58,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:58,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:54:58,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:58,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:58,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:58,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:54:58,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:58,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:58,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:58,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:58,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:58,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:58,382 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:54:58,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:54:58,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:54:58,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:58,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747675861] [2021-08-13 17:54:58,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747675861] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:58,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:58,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:54:58,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334380988] [2021-08-13 17:54:58,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:54:58,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:58,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:54:58,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:54:58,386 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:54:58,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 1653 transitions, 144995 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:54:58,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:58,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:54:58,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:55:11,326 INFO L129 PetriNetUnfolder]: 1990/5499 cut-off events. [2021-08-13 17:55:11,326 INFO L130 PetriNetUnfolder]: For 3499/3499 co-relation queries the response was YES. [2021-08-13 17:55:11,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166967 conditions, 5499 events. 1990/5499 cut-off events. For 3499/3499 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 57363 event pairs, 102 based on Foata normal form. 1/5489 useless extension candidates. Maximal degree in co-relation 165596. Up to 3206 conditions per place. [2021-08-13 17:55:11,409 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1049 selfloop transitions, 74 changer transitions 539/1672 dead transitions. [2021-08-13 17:55:11,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 1672 transitions, 149991 flow [2021-08-13 17:55:11,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:55:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:55:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 17:55:11,411 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 17:55:11,411 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 17:55:11,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 17:55:11,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:55:11,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 17:55:11,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 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) [2021-08-13 17:55:11,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:55:11,413 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:55:11,413 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 343 predicate places. [2021-08-13 17:55:11,413 INFO L482 AbstractCegarLoop]: Abstraction has has 382 places, 1672 transitions, 149991 flow [2021-08-13 17:55:11,413 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:55:11,413 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:55:11,413 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:55:11,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-13 17:55:11,413 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:55:11,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:55:11,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1203032748, now seen corresponding path program 45 times [2021-08-13 17:55:11,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:55:11,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133133752] [2021-08-13 17:55:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:55:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:55:11,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:11,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:11,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:11,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:11,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:11,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:55:11,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:11,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:11,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:11,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:55:11,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:11,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:11,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:11,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:11,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:11,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:11,479 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:55:11,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:55:11,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:55:11,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:55:11,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133133752] [2021-08-13 17:55:11,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133133752] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:55:11,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:55:11,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:55:11,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789107853] [2021-08-13 17:55:11,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:55:11,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:55:11,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:55:11,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:55:11,483 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:55:11,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 1672 transitions, 149991 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:55:11,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:55:11,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:55:11,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:55:24,102 INFO L129 PetriNetUnfolder]: 1991/5516 cut-off events. [2021-08-13 17:55:24,102 INFO L130 PetriNetUnfolder]: For 3596/3596 co-relation queries the response was YES. [2021-08-13 17:55:24,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170902 conditions, 5516 events. 1991/5516 cut-off events. For 3596/3596 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 57603 event pairs, 102 based on Foata normal form. 1/5507 useless extension candidates. Maximal degree in co-relation 169499. Up to 3212 conditions per place. [2021-08-13 17:55:24,179 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 984 selfloop transitions, 145 changer transitions 539/1678 dead transitions. [2021-08-13 17:55:24,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 1678 transitions, 153867 flow [2021-08-13 17:55:24,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:55:24,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:55:24,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-08-13 17:55:24,180 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-08-13 17:55:24,181 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-08-13 17:55:24,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-08-13 17:55:24,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:55:24,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-08-13 17:55:24,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 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) [2021-08-13 17:55:24,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:55:24,182 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:55:24,182 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 351 predicate places. [2021-08-13 17:55:24,182 INFO L482 AbstractCegarLoop]: Abstraction has has 390 places, 1678 transitions, 153867 flow [2021-08-13 17:55:24,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:55:24,182 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:55:24,182 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:55:24,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-13 17:55:24,182 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:55:24,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:55:24,183 INFO L82 PathProgramCache]: Analyzing trace with hash 525432470, now seen corresponding path program 46 times [2021-08-13 17:55:24,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:55:24,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97725184] [2021-08-13 17:55:24,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:55:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:55:24,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:24,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:24,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:24,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:24,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:24,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:55:24,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:24,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:24,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:24,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:55:24,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:24,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:24,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:24,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:55:24,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:24,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:24,262 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:55:24,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:55:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:55:24,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:55:24,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97725184] [2021-08-13 17:55:24,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97725184] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:55:24,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:55:24,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:55:24,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008365833] [2021-08-13 17:55:24,265 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 17:55:24,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:55:24,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 17:55:24,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 17:55:24,266 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:55:24,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 1678 transitions, 153867 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:55:24,266 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:55:24,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:55:24,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:55:39,059 INFO L129 PetriNetUnfolder]: 1992/5531 cut-off events. [2021-08-13 17:55:39,059 INFO L130 PetriNetUnfolder]: For 3698/3698 co-relation queries the response was YES. [2021-08-13 17:55:39,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174799 conditions, 5531 events. 1992/5531 cut-off events. For 3698/3698 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 57815 event pairs, 102 based on Foata normal form. 1/5521 useless extension candidates. Maximal degree in co-relation 173393. Up to 3217 conditions per place. [2021-08-13 17:55:39,132 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 925 selfloop transitions, 168 changer transitions 580/1683 dead transitions. [2021-08-13 17:55:39,132 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 1683 transitions, 157673 flow [2021-08-13 17:55:39,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 17:55:39,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 17:55:39,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 332 transitions. [2021-08-13 17:55:39,133 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7545454545454545 [2021-08-13 17:55:39,133 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 332 transitions. [2021-08-13 17:55:39,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 332 transitions. [2021-08-13 17:55:39,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:55:39,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 332 transitions. [2021-08-13 17:55:39,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.2) internal successors, (332), 10 states have internal predecessors, (332), 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) [2021-08-13 17:55:39,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:55:39,134 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:55:39,134 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 360 predicate places. [2021-08-13 17:55:39,134 INFO L482 AbstractCegarLoop]: Abstraction has has 399 places, 1683 transitions, 157673 flow [2021-08-13 17:55:39,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:55:39,135 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:55:39,135 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:55:39,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-13 17:55:39,135 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:55:39,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:55:39,135 INFO L82 PathProgramCache]: Analyzing trace with hash -331082602, now seen corresponding path program 47 times [2021-08-13 17:55:39,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:55:39,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534414073] [2021-08-13 17:55:39,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:55:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:55:39,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:39,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:39,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:39,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:39,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:39,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:55:39,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:39,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:39,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:39,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:55:39,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:39,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:39,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:39,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:55:39,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:39,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:39,239 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:55:39,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:55:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:55:39,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:55:39,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534414073] [2021-08-13 17:55:39,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534414073] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:55:39,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:55:39,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:55:39,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944084169] [2021-08-13 17:55:39,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:55:39,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:55:39,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:55:39,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:55:39,243 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:55:39,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 1683 transitions, 157673 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:55:39,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:55:39,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:55:39,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:55:52,819 INFO L129 PetriNetUnfolder]: 1995/5560 cut-off events. [2021-08-13 17:55:52,819 INFO L130 PetriNetUnfolder]: For 3801/3801 co-relation queries the response was YES. [2021-08-13 17:55:52,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179189 conditions, 5560 events. 1995/5560 cut-off events. For 3801/3801 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 58329 event pairs, 102 based on Foata normal form. 1/5549 useless extension candidates. Maximal degree in co-relation 177770. Up to 3232 conditions per place. [2021-08-13 17:55:52,894 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 976 selfloop transitions, 111 changer transitions 601/1698 dead transitions. [2021-08-13 17:55:52,894 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 1698 transitions, 162459 flow [2021-08-13 17:55:52,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:55:52,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:55:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-08-13 17:55:52,895 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-08-13 17:55:52,895 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-08-13 17:55:52,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-08-13 17:55:52,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:55:52,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-08-13 17:55:52,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 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) [2021-08-13 17:55:52,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:55:52,896 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:55:52,896 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 368 predicate places. [2021-08-13 17:55:52,896 INFO L482 AbstractCegarLoop]: Abstraction has has 407 places, 1698 transitions, 162459 flow [2021-08-13 17:55:52,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:55:52,896 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:55:52,897 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:55:52,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-13 17:55:52,897 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:55:52,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:55:52,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1896213522, now seen corresponding path program 48 times [2021-08-13 17:55:52,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:55:52,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361178048] [2021-08-13 17:55:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:55:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:55:52,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:52,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:52,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:52,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:52,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:52,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:55:52,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:52,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:52,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:52,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:55:52,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:52,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:55:52,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:52,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:55:52,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:52,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:52,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:55:52,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:55:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:55:52,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:55:52,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361178048] [2021-08-13 17:55:52,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361178048] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:55:52,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:55:52,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:55:52,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097276124] [2021-08-13 17:55:52,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 17:55:52,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:55:52,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 17:55:52,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 17:55:52,983 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:55:52,984 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 1698 transitions, 162459 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:55:52,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:55:52,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:55:52,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:56:06,301 INFO L129 PetriNetUnfolder]: 1997/5592 cut-off events. [2021-08-13 17:56:06,301 INFO L130 PetriNetUnfolder]: For 3919/3919 co-relation queries the response was YES. [2021-08-13 17:56:06,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183336 conditions, 5592 events. 1997/5592 cut-off events. For 3919/3919 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 58855 event pairs, 102 based on Foata normal form. 1/5581 useless extension candidates. Maximal degree in co-relation 181873. Up to 3241 conditions per place. [2021-08-13 17:56:06,375 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 976 selfloop transitions, 97 changer transitions 624/1707 dead transitions. [2021-08-13 17:56:06,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 1707 transitions, 166717 flow [2021-08-13 17:56:06,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 17:56:06,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 17:56:06,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 330 transitions. [2021-08-13 17:56:06,376 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 17:56:06,376 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 330 transitions. [2021-08-13 17:56:06,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 330 transitions. [2021-08-13 17:56:06,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:56:06,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 330 transitions. [2021-08-13 17:56:06,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 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) [2021-08-13 17:56:06,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:56:06,377 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:56:06,377 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 377 predicate places. [2021-08-13 17:56:06,377 INFO L482 AbstractCegarLoop]: Abstraction has has 416 places, 1707 transitions, 166717 flow [2021-08-13 17:56:06,377 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:56:06,377 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:56:06,378 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:56:06,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-13 17:56:06,378 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:56:06,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:56:06,378 INFO L82 PathProgramCache]: Analyzing trace with hash 417293454, now seen corresponding path program 49 times [2021-08-13 17:56:06,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:56:06,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119810585] [2021-08-13 17:56:06,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:56:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:56:06,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:06,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:56:06,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:06,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:56:06,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:06,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:56:06,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:06,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:56:06,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:06,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:56:06,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:06,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:56:06,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:06,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:56:06,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:06,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:56:06,460 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:56:06,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:56:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:56:06,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:56:06,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119810585] [2021-08-13 17:56:06,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119810585] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:56:06,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:56:06,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:56:06,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639125932] [2021-08-13 17:56:06,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 17:56:06,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:56:06,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 17:56:06,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 17:56:06,464 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:56:06,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 1707 transitions, 166717 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:56:06,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:56:06,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:56:06,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:56:21,468 INFO L129 PetriNetUnfolder]: 2000/5635 cut-off events. [2021-08-13 17:56:21,468 INFO L130 PetriNetUnfolder]: For 4041/4041 co-relation queries the response was YES. [2021-08-13 17:56:21,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187856 conditions, 5635 events. 2000/5635 cut-off events. For 4041/4041 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 59603 event pairs, 107 based on Foata normal form. 1/5624 useless extension candidates. Maximal degree in co-relation 186362. Up to 3257 conditions per place. [2021-08-13 17:56:21,546 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 926 selfloop transitions, 134 changer transitions 653/1723 dead transitions. [2021-08-13 17:56:21,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 1723 transitions, 171711 flow [2021-08-13 17:56:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 17:56:21,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 17:56:21,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2021-08-13 17:56:21,547 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7522727272727273 [2021-08-13 17:56:21,547 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 331 transitions. [2021-08-13 17:56:21,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 331 transitions. [2021-08-13 17:56:21,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:56:21,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 331 transitions. [2021-08-13 17:56:21,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 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) [2021-08-13 17:56:21,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:56:21,548 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:56:21,548 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 386 predicate places. [2021-08-13 17:56:21,549 INFO L482 AbstractCegarLoop]: Abstraction has has 425 places, 1723 transitions, 171711 flow [2021-08-13 17:56:21,549 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:56:21,549 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:56:21,549 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:56:21,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-13 17:56:21,549 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:56:21,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:56:21,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2002461008, now seen corresponding path program 50 times [2021-08-13 17:56:21,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:56:21,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451236355] [2021-08-13 17:56:21,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:56:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:56:21,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:21,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:56:21,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:21,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:56:21,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:21,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:56:21,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:21,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:56:21,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:21,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:56:21,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:21,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:56:21,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:21,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:56:21,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:21,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:56:21,601 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:56:21,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:56:21,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:56:21,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:56:21,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451236355] [2021-08-13 17:56:21,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451236355] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:56:21,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:56:21,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:56:21,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94357065] [2021-08-13 17:56:21,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:56:21,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:56:21,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:56:21,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:56:21,605 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:56:21,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 1723 transitions, 171711 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 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) [2021-08-13 17:56:21,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:56:21,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:56:21,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:56:35,999 INFO L129 PetriNetUnfolder]: 2023/5703 cut-off events. [2021-08-13 17:56:35,999 INFO L130 PetriNetUnfolder]: For 4175/4175 co-relation queries the response was YES. [2021-08-13 17:56:36,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193494 conditions, 5703 events. 2023/5703 cut-off events. For 4175/4175 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 60449 event pairs, 75 based on Foata normal form. 1/5692 useless extension candidates. Maximal degree in co-relation 191968. Up to 3429 conditions per place. [2021-08-13 17:56:36,195 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1046 selfloop transitions, 28 changer transitions 658/1742 dead transitions. [2021-08-13 17:56:36,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 1742 transitions, 177095 flow [2021-08-13 17:56:36,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:56:36,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:56:36,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2021-08-13 17:56:36,195 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.762987012987013 [2021-08-13 17:56:36,195 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 235 transitions. [2021-08-13 17:56:36,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 235 transitions. [2021-08-13 17:56:36,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:56:36,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 235 transitions. [2021-08-13 17:56:36,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:56:36,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 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) [2021-08-13 17:56:36,196 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 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) [2021-08-13 17:56:36,196 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 392 predicate places. [2021-08-13 17:56:36,197 INFO L482 AbstractCegarLoop]: Abstraction has has 431 places, 1742 transitions, 177095 flow [2021-08-13 17:56:36,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 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) [2021-08-13 17:56:36,197 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:56:36,197 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:56:36,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-13 17:56:36,197 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:56:36,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:56:36,197 INFO L82 PathProgramCache]: Analyzing trace with hash -56511068, now seen corresponding path program 51 times [2021-08-13 17:56:36,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:56:36,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59978633] [2021-08-13 17:56:36,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:56:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:56:36,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:36,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:56:36,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:36,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:56:36,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:36,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:56:36,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:36,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:56:36,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:36,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:56:36,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:36,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:56:36,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:36,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:56:36,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:36,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:56:36,270 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:56:36,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:56:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:56:36,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:56:36,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59978633] [2021-08-13 17:56:36,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59978633] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:56:36,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:56:36,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:56:36,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376521969] [2021-08-13 17:56:36,273 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:56:36,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:56:36,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:56:36,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:56:36,274 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:56:36,274 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 1742 transitions, 177095 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:56:36,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:56:36,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:56:36,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:56:53,044 INFO L129 PetriNetUnfolder]: 2050/5768 cut-off events. [2021-08-13 17:56:53,045 INFO L130 PetriNetUnfolder]: For 4290/4290 co-relation queries the response was YES. [2021-08-13 17:56:53,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199440 conditions, 5768 events. 2050/5768 cut-off events. For 4290/4290 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 61251 event pairs, 67 based on Foata normal form. 1/5757 useless extension candidates. Maximal degree in co-relation 197889. Up to 3471 conditions per place. [2021-08-13 17:56:53,130 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1024 selfloop transitions, 70 changer transitions 662/1766 dead transitions. [2021-08-13 17:56:53,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 1766 transitions, 183055 flow [2021-08-13 17:56:53,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:56:53,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:56:53,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-08-13 17:56:53,131 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-08-13 17:56:53,131 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-08-13 17:56:53,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-08-13 17:56:53,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:56:53,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-08-13 17:56:53,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.888888888888886) internal successors, (296), 9 states have internal predecessors, (296), 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) [2021-08-13 17:56:53,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:56:53,132 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:56:53,132 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 400 predicate places. [2021-08-13 17:56:53,132 INFO L482 AbstractCegarLoop]: Abstraction has has 439 places, 1766 transitions, 183055 flow [2021-08-13 17:56:53,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:56:53,132 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:56:53,132 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:56:53,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-13 17:56:53,132 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:56:53,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:56:53,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2013022430, now seen corresponding path program 52 times [2021-08-13 17:56:53,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:56:53,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931294722] [2021-08-13 17:56:53,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:56:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:56:53,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:53,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:56:53,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:53,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:56:53,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:53,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:56:53,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:53,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:56:53,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:53,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:56:53,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:53,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:56:53,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:53,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:56:53,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:56:53,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:56:53,192 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:56:53,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:56:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:56:53,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:56:53,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931294722] [2021-08-13 17:56:53,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931294722] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:56:53,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:56:53,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:56:53,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445773137] [2021-08-13 17:56:53,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:56:53,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:56:53,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:56:53,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:56:53,196 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:56:53,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 1766 transitions, 183055 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:56:53,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:56:53,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:56:53,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:11,181 INFO L129 PetriNetUnfolder]: 2072/5835 cut-off events. [2021-08-13 17:57:11,181 INFO L130 PetriNetUnfolder]: For 4422/4422 co-relation queries the response was YES. [2021-08-13 17:57:11,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 205584 conditions, 5835 events. 2072/5835 cut-off events. For 4422/4422 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 62135 event pairs, 69 based on Foata normal form. 1/5824 useless extension candidates. Maximal degree in co-relation 204023. Up to 3515 conditions per place. [2021-08-13 17:57:11,267 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1050 selfloop transitions, 61 changer transitions 668/1789 dead transitions. [2021-08-13 17:57:11,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 1789 transitions, 189030 flow [2021-08-13 17:57:11,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:11,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:11,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-08-13 17:57:11,268 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-08-13 17:57:11,268 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-08-13 17:57:11,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-08-13 17:57:11,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:11,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-08-13 17:57:11,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.5) internal successors, (268), 8 states have internal predecessors, (268), 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) [2021-08-13 17:57:11,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:57:11,270 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2021-08-13 17:57:11,270 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 407 predicate places. [2021-08-13 17:57:11,270 INFO L482 AbstractCegarLoop]: Abstraction has has 446 places, 1789 transitions, 189030 flow [2021-08-13 17:57:11,270 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 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) [2021-08-13 17:57:11,270 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:11,270 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:11,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-13 17:57:11,270 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:11,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:11,271 INFO L82 PathProgramCache]: Analyzing trace with hash 2123415800, now seen corresponding path program 53 times [2021-08-13 17:57:11,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:11,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096535055] [2021-08-13 17:57:11,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:11,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:11,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:11,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:11,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:11,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:11,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:57:11,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:11,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:11,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:11,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:57:11,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:11,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:11,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:11,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:57:11,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:11,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:11,338 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:57:11,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:57:11,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:11,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:11,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096535055] [2021-08-13 17:57:11,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096535055] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:11,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:11,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:11,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694517319] [2021-08-13 17:57:11,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:11,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:11,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:11,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:11,341 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:57:11,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 1789 transitions, 189030 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:57:11,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:11,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:57:11,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:30,045 INFO L129 PetriNetUnfolder]: 2078/5861 cut-off events. [2021-08-13 17:57:30,045 INFO L130 PetriNetUnfolder]: For 4539/4539 co-relation queries the response was YES. [2021-08-13 17:57:30,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209966 conditions, 5861 events. 2078/5861 cut-off events. For 4539/4539 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 62492 event pairs, 69 based on Foata normal form. 1/5850 useless extension candidates. Maximal degree in co-relation 208377. Up to 3525 conditions per place. [2021-08-13 17:57:30,133 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1011 selfloop transitions, 97 changer transitions 681/1799 dead transitions. [2021-08-13 17:57:30,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 1799 transitions, 193668 flow [2021-08-13 17:57:30,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:57:30,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:57:30,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-08-13 17:57:30,134 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-08-13 17:57:30,134 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-08-13 17:57:30,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-08-13 17:57:30,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:30,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-08-13 17:57:30,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.22222222222222) internal successors, (299), 9 states have internal predecessors, (299), 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) [2021-08-13 17:57:30,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:57:30,135 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:57:30,135 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 415 predicate places. [2021-08-13 17:57:30,135 INFO L482 AbstractCegarLoop]: Abstraction has has 454 places, 1799 transitions, 193668 flow [2021-08-13 17:57:30,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:57:30,135 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:30,136 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:30,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-13 17:57:30,136 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:30,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:30,136 INFO L82 PathProgramCache]: Analyzing trace with hash 530696372, now seen corresponding path program 54 times [2021-08-13 17:57:30,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:30,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810105787] [2021-08-13 17:57:30,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:30,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:30,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:30,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:57:30,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:30,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:57:30,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:30,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:57:30,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:30,206 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:57:30,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:57:30,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:30,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:30,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810105787] [2021-08-13 17:57:30,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810105787] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:30,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:30,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:30,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557142442] [2021-08-13 17:57:30,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:30,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:30,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:30,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:30,210 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:57:30,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 1799 transitions, 193668 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:57:30,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:30,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:57:30,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:50,577 INFO L129 PetriNetUnfolder]: 2119/5974 cut-off events. [2021-08-13 17:57:50,577 INFO L130 PetriNetUnfolder]: For 4681/4681 co-relation queries the response was YES. [2021-08-13 17:57:50,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217442 conditions, 5974 events. 2119/5974 cut-off events. For 4681/4681 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 63964 event pairs, 69 based on Foata normal form. 1/5963 useless extension candidates. Maximal degree in co-relation 215811. Up to 3590 conditions per place. [2021-08-13 17:57:50,668 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1083 selfloop transitions, 66 changer transitions 681/1840 dead transitions. [2021-08-13 17:57:50,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1840 transitions, 201756 flow [2021-08-13 17:57:50,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:57:50,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:57:50,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-08-13 17:57:50,669 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-08-13 17:57:50,669 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-08-13 17:57:50,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-08-13 17:57:50,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:50,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-08-13 17:57:50,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.888888888888886) internal successors, (296), 9 states have internal predecessors, (296), 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) [2021-08-13 17:57:50,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:57:50,670 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:57:50,670 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 423 predicate places. [2021-08-13 17:57:50,670 INFO L482 AbstractCegarLoop]: Abstraction has has 462 places, 1840 transitions, 201756 flow [2021-08-13 17:57:50,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:57:50,670 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:50,670 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:50,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-13 17:57:50,671 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:50,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:50,671 INFO L82 PathProgramCache]: Analyzing trace with hash -563931126, now seen corresponding path program 55 times [2021-08-13 17:57:50,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:50,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086815225] [2021-08-13 17:57:50,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:50,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:50,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:50,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:50,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:50,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:50,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:57:50,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:50,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:50,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:50,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:57:50,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:50,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:50,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:50,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:57:50,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:50,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:50,741 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:57:50,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:57:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:50,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:50,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086815225] [2021-08-13 17:57:50,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086815225] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:50,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:50,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:50,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008919867] [2021-08-13 17:57:50,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:50,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:50,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:50,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:50,744 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:57:50,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1840 transitions, 201756 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:57:50,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:50,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:57:50,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:12,699 INFO L129 PetriNetUnfolder]: 2141/6054 cut-off events. [2021-08-13 17:58:12,699 INFO L130 PetriNetUnfolder]: For 4817/4817 co-relation queries the response was YES. [2021-08-13 17:58:12,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 223688 conditions, 6054 events. 2141/6054 cut-off events. For 4817/4817 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 65111 event pairs, 72 based on Foata normal form. 1/6043 useless extension candidates. Maximal degree in co-relation 222020. Up to 3631 conditions per place. [2021-08-13 17:58:12,791 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1096 selfloop transitions, 81 changer transitions 701/1888 dead transitions. [2021-08-13 17:58:12,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 1888 transitions, 210792 flow [2021-08-13 17:58:12,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:58:12,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:58:12,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 17:58:12,792 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 17:58:12,792 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 17:58:12,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 17:58:12,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:12,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 17:58:12,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 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) [2021-08-13 17:58:12,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:58:12,793 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:58:12,793 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 431 predicate places. [2021-08-13 17:58:12,793 INFO L482 AbstractCegarLoop]: Abstraction has has 470 places, 1888 transitions, 210792 flow [2021-08-13 17:58:12,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:58:12,793 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:12,794 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:12,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-13 17:58:12,794 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:58:12,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:12,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1895493834, now seen corresponding path program 56 times [2021-08-13 17:58:12,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:12,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266971526] [2021-08-13 17:58:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:12,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:12,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:12,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:12,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:12,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:12,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:58:12,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:12,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:12,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:12,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:58:12,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:12,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:12,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:12,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:12,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:12,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:12,862 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:58:12,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:58:12,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:12,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:12,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266971526] [2021-08-13 17:58:12,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266971526] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:12,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:12,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:12,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289178755] [2021-08-13 17:58:12,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:58:12,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:12,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:58:12,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:58:12,866 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:58:12,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 1888 transitions, 210792 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:58:12,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:12,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:58:12,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:35,843 INFO L129 PetriNetUnfolder]: 2183/6172 cut-off events. [2021-08-13 17:58:35,844 INFO L130 PetriNetUnfolder]: For 4998/4998 co-relation queries the response was YES. [2021-08-13 17:58:35,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230879 conditions, 6172 events. 2183/6172 cut-off events. For 4998/4998 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 66626 event pairs, 69 based on Foata normal form. 1/6161 useless extension candidates. Maximal degree in co-relation 229128. Up to 3686 conditions per place. [2021-08-13 17:58:35,939 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1102 selfloop transitions, 97 changer transitions 707/1916 dead transitions. [2021-08-13 17:58:35,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1916 transitions, 217770 flow [2021-08-13 17:58:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:58:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:58:35,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-08-13 17:58:35,940 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-08-13 17:58:35,940 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-08-13 17:58:35,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-08-13 17:58:35,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:35,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-08-13 17:58:35,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 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) [2021-08-13 17:58:35,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:58:35,942 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 17:58:35,942 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 439 predicate places. [2021-08-13 17:58:35,942 INFO L482 AbstractCegarLoop]: Abstraction has has 478 places, 1916 transitions, 217770 flow [2021-08-13 17:58:35,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 17:58:35,942 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:35,942 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:35,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-13 17:58:35,942 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:58:35,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:35,943 INFO L82 PathProgramCache]: Analyzing trace with hash 2069782428, now seen corresponding path program 57 times [2021-08-13 17:58:35,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:35,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952424542] [2021-08-13 17:58:35,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:35,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:35,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:35,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:35,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:35,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:35,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:58:35,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:35,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:35,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:35,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:58:36,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:36,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:36,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:36,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:58:36,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:36,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:36,041 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:58:36,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:58:36,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:36,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:36,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952424542] [2021-08-13 17:58:36,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952424542] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:36,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:36,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:58:36,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918032748] [2021-08-13 17:58:36,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 17:58:36,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:36,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 17:58:36,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 17:58:36,045 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:58:36,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 1916 transitions, 217770 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:58:36,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:36,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:58:36,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:02,426 INFO L129 PetriNetUnfolder]: 2216/6278 cut-off events. [2021-08-13 17:59:02,427 INFO L130 PetriNetUnfolder]: For 5146/5146 co-relation queries the response was YES. [2021-08-13 17:59:02,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 239044 conditions, 6278 events. 2216/6278 cut-off events. For 5146/5146 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 68121 event pairs, 69 based on Foata normal form. 1/6266 useless extension candidates. Maximal degree in co-relation 237283. Up to 3757 conditions per place. [2021-08-13 17:59:02,527 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1067 selfloop transitions, 163 changer transitions 723/1963 dead transitions. [2021-08-13 17:59:02,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 1963 transitions, 227059 flow [2021-08-13 17:59:02,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 17:59:02,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 17:59:02,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2021-08-13 17:59:02,528 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2021-08-13 17:59:02,528 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 328 transitions. [2021-08-13 17:59:02,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 328 transitions. [2021-08-13 17:59:02,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:02,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 328 transitions. [2021-08-13 17:59:02,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.8) internal successors, (328), 10 states have internal predecessors, (328), 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) [2021-08-13 17:59:02,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:59:02,530 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:59:02,530 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 448 predicate places. [2021-08-13 17:59:02,530 INFO L482 AbstractCegarLoop]: Abstraction has has 487 places, 1963 transitions, 227059 flow [2021-08-13 17:59:02,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:59:02,530 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:02,530 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:59:02,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-13 17:59:02,530 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:59:02,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:02,530 INFO L82 PathProgramCache]: Analyzing trace with hash 641038620, now seen corresponding path program 58 times [2021-08-13 17:59:02,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:02,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454845973] [2021-08-13 17:59:02,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:02,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:02,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:02,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:02,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:02,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:02,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:59:02,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:02,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:02,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:02,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:59:02,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:02,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:02,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:02,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:59:02,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:02,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:02,605 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:59:02,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:59:02,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:02,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:02,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454845973] [2021-08-13 17:59:02,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454845973] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:02,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:02,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:59:02,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238229293] [2021-08-13 17:59:02,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 17:59:02,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:02,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 17:59:02,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 17:59:02,609 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:59:02,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 1963 transitions, 227059 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:59:02,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:02,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:59:02,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:29,657 INFO L129 PetriNetUnfolder]: 2221/6304 cut-off events. [2021-08-13 17:59:29,657 INFO L130 PetriNetUnfolder]: For 5272/5272 co-relation queries the response was YES. [2021-08-13 17:59:29,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 243825 conditions, 6304 events. 2221/6304 cut-off events. For 5272/5272 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 68525 event pairs, 69 based on Foata normal form. 1/6292 useless extension candidates. Maximal degree in co-relation 242054. Up to 3769 conditions per place. [2021-08-13 17:59:29,752 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1078 selfloop transitions, 143 changer transitions 744/1975 dead transitions. [2021-08-13 17:59:29,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 1975 transitions, 232381 flow [2021-08-13 17:59:29,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 17:59:29,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 17:59:29,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2021-08-13 17:59:29,753 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7522727272727273 [2021-08-13 17:59:29,753 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 331 transitions. [2021-08-13 17:59:29,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 331 transitions. [2021-08-13 17:59:29,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:29,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 331 transitions. [2021-08-13 17:59:29,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 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) [2021-08-13 17:59:29,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:59:29,756 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 17:59:29,756 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 457 predicate places. [2021-08-13 17:59:29,756 INFO L482 AbstractCegarLoop]: Abstraction has has 496 places, 1975 transitions, 232381 flow [2021-08-13 17:59:29,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:59:29,757 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:29,757 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:59:29,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-13 17:59:29,757 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:59:29,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:29,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1171145366, now seen corresponding path program 59 times [2021-08-13 17:59:29,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:29,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425916251] [2021-08-13 17:59:29,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:29,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:29,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:29,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:29,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:29,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:29,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:59:29,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:29,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:29,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:29,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:59:29,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:29,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:29,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:29,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 17:59:29,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:29,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:29,855 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 17:59:29,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:59:29,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:29,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:29,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425916251] [2021-08-13 17:59:29,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425916251] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:29,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:29,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:59:29,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519009421] [2021-08-13 17:59:29,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 17:59:29,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:29,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 17:59:29,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 17:59:29,859 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 17:59:29,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 1975 transitions, 232381 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 17:59:29,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:29,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 17:59:29,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:00,908 INFO L129 PetriNetUnfolder]: 2229/6338 cut-off events. [2021-08-13 18:00:00,908 INFO L130 PetriNetUnfolder]: For 5396/5396 co-relation queries the response was YES. [2021-08-13 18:00:00,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249059 conditions, 6338 events. 2229/6338 cut-off events. For 5396/5396 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 69003 event pairs, 71 based on Foata normal form. 1/6325 useless extension candidates. Maximal degree in co-relation 247266. Up to 3788 conditions per place. [2021-08-13 18:00:01,007 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1129 selfloop transitions, 108 changer transitions 747/1994 dead transitions. [2021-08-13 18:00:01,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 1994 transitions, 238591 flow [2021-08-13 18:00:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 18:00:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 18:00:01,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2021-08-13 18:00:01,008 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2021-08-13 18:00:01,008 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 328 transitions. [2021-08-13 18:00:01,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 328 transitions. [2021-08-13 18:00:01,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:01,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 328 transitions. [2021-08-13 18:00:01,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.8) internal successors, (328), 10 states have internal predecessors, (328), 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) [2021-08-13 18:00:01,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 18:00:01,009 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 18:00:01,009 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 466 predicate places. [2021-08-13 18:00:01,009 INFO L482 AbstractCegarLoop]: Abstraction has has 505 places, 1994 transitions, 238591 flow [2021-08-13 18:00:01,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 18:00:01,009 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:01,009 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:00:01,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-13 18:00:01,009 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:00:01,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:01,010 INFO L82 PathProgramCache]: Analyzing trace with hash 18580558, now seen corresponding path program 60 times [2021-08-13 18:00:01,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:01,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617332010] [2021-08-13 18:00:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:01,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:01,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:01,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:01,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:01,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:01,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:00:01,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:01,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:00:01,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:01,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:00:01,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:01,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:00:01,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:01,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:00:01,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:01,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:01,137 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 18:00:01,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:00:01,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:01,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:01,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617332010] [2021-08-13 18:00:01,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617332010] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:01,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:01,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:00:01,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588718411] [2021-08-13 18:00:01,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 18:00:01,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:01,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 18:00:01,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 18:00:01,141 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 18:00:01,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 1994 transitions, 238591 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 18:00:01,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:01,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 18:00:01,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:33,106 INFO L129 PetriNetUnfolder]: 2242/6389 cut-off events. [2021-08-13 18:00:33,107 INFO L130 PetriNetUnfolder]: For 5545/5545 co-relation queries the response was YES. [2021-08-13 18:00:33,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 254595 conditions, 6389 events. 2242/6389 cut-off events. For 5545/5545 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 69792 event pairs, 74 based on Foata normal form. 1/6377 useless extension candidates. Maximal degree in co-relation 252756. Up to 3811 conditions per place. [2021-08-13 18:00:33,211 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1095 selfloop transitions, 143 changer transitions 786/2034 dead transitions. [2021-08-13 18:00:33,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 2034 transitions, 247439 flow [2021-08-13 18:00:33,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 18:00:33,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 18:00:33,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2021-08-13 18:00:33,212 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7477272727272727 [2021-08-13 18:00:33,212 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 329 transitions. [2021-08-13 18:00:33,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 329 transitions. [2021-08-13 18:00:33,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:33,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 329 transitions. [2021-08-13 18:00:33,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 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) [2021-08-13 18:00:33,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 18:00:33,213 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 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) [2021-08-13 18:00:33,213 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 475 predicate places. [2021-08-13 18:00:33,213 INFO L482 AbstractCegarLoop]: Abstraction has has 514 places, 2034 transitions, 247439 flow [2021-08-13 18:00:33,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 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) [2021-08-13 18:00:33,213 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:33,213 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:00:33,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-13 18:00:33,214 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:00:33,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:33,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1722035282, now seen corresponding path program 61 times [2021-08-13 18:00:33,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:33,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612605966] [2021-08-13 18:00:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:33,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:33,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:33,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:33,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:33,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:33,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:00:33,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:33,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:00:33,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:33,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:00:33,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:33,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:33,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:33,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:33,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:33,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:33,280 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 18:00:33,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:00:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:33,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:33,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612605966] [2021-08-13 18:00:33,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612605966] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:33,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:33,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:00:33,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298462817] [2021-08-13 18:00:33,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:00:33,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:33,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:00:33,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:00:33,284 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 18:00:33,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 2034 transitions, 247439 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 18:00:33,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:33,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 18:00:33,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:01:01,969 INFO L129 PetriNetUnfolder]: 2272/6466 cut-off events. [2021-08-13 18:01:01,969 INFO L130 PetriNetUnfolder]: For 5694/5694 co-relation queries the response was YES. [2021-08-13 18:01:02,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 262160 conditions, 6466 events. 2272/6466 cut-off events. For 5694/5694 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 70764 event pairs, 68 based on Foata normal form. 1/6453 useless extension candidates. Maximal degree in co-relation 260320. Up to 3866 conditions per place. [2021-08-13 18:01:02,071 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1174 selfloop transitions, 86 changer transitions 792/2062 dead transitions. [2021-08-13 18:01:02,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 2062 transitions, 254989 flow [2021-08-13 18:01:02,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:01:02,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:01:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-08-13 18:01:02,072 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-08-13 18:01:02,072 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-08-13 18:01:02,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-08-13 18:01:02,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:01:02,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-08-13 18:01:02,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 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) [2021-08-13 18:01:02,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 18:01:02,073 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2021-08-13 18:01:02,073 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 483 predicate places. [2021-08-13 18:01:02,073 INFO L482 AbstractCegarLoop]: Abstraction has has 522 places, 2062 transitions, 254989 flow [2021-08-13 18:01:02,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 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) [2021-08-13 18:01:02,073 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:01:02,073 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:01:02,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-08-13 18:01:02,073 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:01:02,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:01:02,073 INFO L82 PathProgramCache]: Analyzing trace with hash 633990084, now seen corresponding path program 62 times [2021-08-13 18:01:02,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:01:02,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525525462] [2021-08-13 18:01:02,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:01:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:01:02,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:02,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:01:02,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:02,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:01:02,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:02,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:01:02,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:02,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:01:02,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:02,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:01:02,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:02,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:01:02,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:02,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 Received shutdown request... [2021-08-13 18:01:02,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-08-13 18:01:02,130 WARN L547 AbstractCegarLoop]: Verification canceled [2021-08-13 18:01:02,132 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-13 18:01:02,134 WARN L188 ceAbstractionStarter]: Timeout [2021-08-13 18:01:02,134 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.08 06:01:02 BasicIcfg [2021-08-13 18:01:02,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-13 18:01:02,135 INFO L168 Benchmark]: Toolchain (without parser) took 543204.88 ms. Allocated memory was 188.7 MB in the beginning and 5.0 GB in the end (delta: 4.8 GB). Free memory was 169.9 MB in the beginning and 3.0 GB in the end (delta: -2.9 GB). Peak memory consumption was 1.9 GB. Max. memory is 8.0 GB. [2021-08-13 18:01:02,135 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 188.7 MB. Free memory is still 170.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 18:01:02,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.73 ms. Allocated memory is still 188.7 MB. Free memory was 169.7 MB in the beginning and 168.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 18:01:02,135 INFO L168 Benchmark]: Boogie Preprocessor took 10.70 ms. Allocated memory is still 188.7 MB. Free memory was 168.2 MB in the beginning and 167.4 MB in the end (delta: 838.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 18:01:02,136 INFO L168 Benchmark]: RCFGBuilder took 194.34 ms. Allocated memory is still 188.7 MB. Free memory was 167.4 MB in the beginning and 158.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-08-13 18:01:02,136 INFO L168 Benchmark]: TraceAbstraction took 542971.74 ms. Allocated memory was 188.7 MB in the beginning and 5.0 GB in the end (delta: 4.8 GB). Free memory was 158.2 MB in the beginning and 3.0 GB in the end (delta: -2.9 GB). Peak memory consumption was 1.9 GB. Max. memory is 8.0 GB. [2021-08-13 18:01:02,136 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 0.15 ms. Allocated memory is still 188.7 MB. Free memory is still 170.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.73 ms. Allocated memory is still 188.7 MB. Free memory was 169.7 MB in the beginning and 168.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.70 ms. Allocated memory is still 188.7 MB. Free memory was 168.2 MB in the beginning and 167.4 MB in the end (delta: 838.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 194.34 ms. Allocated memory is still 188.7 MB. Free memory was 167.4 MB in the beginning and 158.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 542971.74 ms. Allocated memory was 188.7 MB in the beginning and 5.0 GB in the end (delta: 4.8 GB). Free memory was 158.2 MB in the beginning and 3.0 GB in the end (delta: -2.9 GB). Peak memory consumption was 1.9 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 6 procedures, 42 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 36.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 542867.6ms, OverallIterations: 64, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 537165.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 112.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1952 SDtfs, 1278 SDslu, 6586 SDs, 0 SdLazy, 17545 SolverSat, 437 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7834.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 555 GetRequests, 74 SyntacticMatches, 61 SemanticMatches, 420 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3223.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=254989occurred in iteration=63, InterpolantAutomatonStates: 546, 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: 45.3ms SsaConstructionTime, 193.8ms SatisfiabilityAnalysisTime, 4870.0ms InterpolantComputationTime, 1638 NumberOfCodeBlocks, 1638 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 1575 ConstructedInterpolants, 0 QuantifiedInterpolants, 11607 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 63 InterpolantComputations, 63 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 could not prove your program: Timeout Completed graceful shutdown