./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:25:48,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:25:48,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:25:48,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:25:48,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:25:48,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:25:48,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:25:48,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:25:48,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:25:48,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:25:48,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:25:48,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:25:48,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:25:48,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:25:48,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:25:48,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:25:48,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:25:48,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:25:48,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:25:48,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:25:48,285 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:25:48,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:25:48,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:25:48,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:25:48,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:25:48,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:25:48,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:25:48,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:25:48,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:25:48,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:25:48,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:25:48,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:25:48,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:25:48,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:25:48,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:25:48,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:25:48,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:25:48,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:25:48,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:25:48,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:25:48,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:25:48,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:25:48,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:25:48,332 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:25:48,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:25:48,333 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:25:48,333 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:25:48,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:25:48,334 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:25:48,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:25:48,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:25:48,335 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:25:48,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:25:48,335 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:25:48,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:25:48,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:25:48,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:25:48,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:25:48,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:25:48,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:25:48,336 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:25:48,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:25:48,337 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:25:48,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:25:48,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:25:48,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:25:48,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:25:48,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:48,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:25:48,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:25:48,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:25:48,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:25:48,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:25:48,340 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:25:48,340 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:25:48,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:25:48,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea [2022-07-19 21:25:48,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:25:48,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:25:48,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:25:48,645 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:25:48,646 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:25:48,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2022-07-19 21:25:48,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bacafe88/d6005602e9d84105a8b3ee23699abe49/FLAG051f35f63 [2022-07-19 21:25:49,153 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:25:49,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2022-07-19 21:25:49,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bacafe88/d6005602e9d84105a8b3ee23699abe49/FLAG051f35f63 [2022-07-19 21:25:49,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bacafe88/d6005602e9d84105a8b3ee23699abe49 [2022-07-19 21:25:49,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:25:49,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:25:49,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:49,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:25:49,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:25:49,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:49" (1/1) ... [2022-07-19 21:25:49,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a29b30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:49, skipping insertion in model container [2022-07-19 21:25:49,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:49" (1/1) ... [2022-07-19 21:25:49,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:25:49,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:25:49,809 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3015,3028] [2022-07-19 21:25:49,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:49,836 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:25:49,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3015,3028] [2022-07-19 21:25:49,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:49,903 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:25:49,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:49 WrapperNode [2022-07-19 21:25:49,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:49,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:49,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:25:49,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:25:49,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:49" (1/1) ... [2022-07-19 21:25:49,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:49" (1/1) ... [2022-07-19 21:25:49,956 INFO L137 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 221 [2022-07-19 21:25:49,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:49,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:25:49,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:25:49,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:25:49,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:49" (1/1) ... [2022-07-19 21:25:49,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:49" (1/1) ... [2022-07-19 21:25:49,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:49" (1/1) ... [2022-07-19 21:25:49,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:49" (1/1) ... [2022-07-19 21:25:49,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:49" (1/1) ... [2022-07-19 21:25:49,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:49" (1/1) ... [2022-07-19 21:25:49,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:49" (1/1) ... [2022-07-19 21:25:49,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:25:49,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:25:49,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:25:49,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:25:49,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:49" (1/1) ... [2022-07-19 21:25:50,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:50,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:50,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:25:50,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:25:50,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:25:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:25:50,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:25:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:25:50,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:25:50,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:25:50,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:25:50,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:25:50,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:25:50,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:25:50,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:25:50,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:25:50,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:25:50,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:25:50,063 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:25:50,140 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:25:50,142 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:25:50,512 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:25:50,524 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:25:50,524 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:25:50,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:25:50 BoogieIcfgContainer [2022-07-19 21:25:50,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:25:50,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:25:50,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:25:50,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:25:50,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:25:49" (1/3) ... [2022-07-19 21:25:50,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a87d68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:25:50, skipping insertion in model container [2022-07-19 21:25:50,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:49" (2/3) ... [2022-07-19 21:25:50,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a87d68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:25:50, skipping insertion in model container [2022-07-19 21:25:50,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:25:50" (3/3) ... [2022-07-19 21:25:50,542 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2022-07-19 21:25:50,547 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:25:50,555 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:25:50,556 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:25:50,556 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:25:50,717 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-19 21:25:50,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 270 places, 286 transitions, 596 flow [2022-07-19 21:25:50,892 INFO L129 PetriNetUnfolder]: 26/283 cut-off events. [2022-07-19 21:25:50,893 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:25:50,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 283 events. 26/283 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 744 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 199. Up to 2 conditions per place. [2022-07-19 21:25:50,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 286 transitions, 596 flow [2022-07-19 21:25:50,910 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 272 transitions, 562 flow [2022-07-19 21:25:50,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:25:50,926 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@48195fe5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5015d1fe [2022-07-19 21:25:50,926 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:25:50,984 INFO L129 PetriNetUnfolder]: 26/271 cut-off events. [2022-07-19 21:25:50,984 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:25:50,984 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:50,985 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:25:50,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:50,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:50,991 INFO L85 PathProgramCache]: Analyzing trace with hash -311524549, now seen corresponding path program 1 times [2022-07-19 21:25:50,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:50,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131993573] [2022-07-19 21:25:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:51,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:51,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:51,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131993573] [2022-07-19 21:25:51,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131993573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:51,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:51,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:51,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687561712] [2022-07-19 21:25:51,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:51,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:51,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:51,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:51,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:51,388 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 286 [2022-07-19 21:25:51,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 272 transitions, 562 flow. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:51,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:51,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 286 [2022-07-19 21:25:51,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:51,642 INFO L129 PetriNetUnfolder]: 74/833 cut-off events. [2022-07-19 21:25:51,642 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-07-19 21:25:51,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 833 events. 74/833 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5322 event pairs, 8 based on Foata normal form. 39/777 useless extension candidates. Maximal degree in co-relation 739. Up to 33 conditions per place. [2022-07-19 21:25:51,662 INFO L132 encePairwiseOnDemand]: 270/286 looper letters, 17 selfloop transitions, 5 changer transitions 2/272 dead transitions. [2022-07-19 21:25:51,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 272 transitions, 621 flow [2022-07-19 21:25:51,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:51,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:51,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 826 transitions. [2022-07-19 21:25:51,685 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9627039627039627 [2022-07-19 21:25:51,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 826 transitions. [2022-07-19 21:25:51,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 826 transitions. [2022-07-19 21:25:51,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:51,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 826 transitions. [2022-07-19 21:25:51,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:51,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:51,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:51,711 INFO L186 Difference]: Start difference. First operand has 256 places, 272 transitions, 562 flow. Second operand 3 states and 826 transitions. [2022-07-19 21:25:51,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 272 transitions, 621 flow [2022-07-19 21:25:51,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 272 transitions, 599 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-19 21:25:51,729 INFO L242 Difference]: Finished difference. Result has 254 places, 265 transitions, 568 flow [2022-07-19 21:25:51,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=568, PETRI_PLACES=254, PETRI_TRANSITIONS=265} [2022-07-19 21:25:51,736 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, -2 predicate places. [2022-07-19 21:25:51,737 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 265 transitions, 568 flow [2022-07-19 21:25:51,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:51,738 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:51,739 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:25:51,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:25:51,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:51,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:51,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1177739013, now seen corresponding path program 1 times [2022-07-19 21:25:51,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:51,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369437745] [2022-07-19 21:25:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:51,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:51,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:51,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:51,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369437745] [2022-07-19 21:25:51,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369437745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:51,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:51,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:51,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983069601] [2022-07-19 21:25:51,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:51,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:51,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:51,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:51,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:51,842 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 286 [2022-07-19 21:25:51,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 265 transitions, 568 flow. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:51,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:51,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 286 [2022-07-19 21:25:51,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:52,005 INFO L129 PetriNetUnfolder]: 72/833 cut-off events. [2022-07-19 21:25:52,005 INFO L130 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2022-07-19 21:25:52,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 833 events. 72/833 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4888 event pairs, 8 based on Foata normal form. 6/755 useless extension candidates. Maximal degree in co-relation 400. Up to 28 conditions per place. [2022-07-19 21:25:52,018 INFO L132 encePairwiseOnDemand]: 280/286 looper letters, 22 selfloop transitions, 3 changer transitions 0/273 dead transitions. [2022-07-19 21:25:52,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 273 transitions, 645 flow [2022-07-19 21:25:52,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:52,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:52,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2022-07-19 21:25:52,022 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2022-07-19 21:25:52,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2022-07-19 21:25:52,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2022-07-19 21:25:52,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:52,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2022-07-19 21:25:52,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,028 INFO L186 Difference]: Start difference. First operand has 254 places, 265 transitions, 568 flow. Second operand 3 states and 814 transitions. [2022-07-19 21:25:52,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 273 transitions, 645 flow [2022-07-19 21:25:52,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 273 transitions, 635 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:52,037 INFO L242 Difference]: Finished difference. Result has 254 places, 268 transitions, 594 flow [2022-07-19 21:25:52,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=594, PETRI_PLACES=254, PETRI_TRANSITIONS=268} [2022-07-19 21:25:52,039 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, -2 predicate places. [2022-07-19 21:25:52,039 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 268 transitions, 594 flow [2022-07-19 21:25:52,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,040 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:52,041 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:25:52,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:25:52,042 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:52,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:52,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1142741541, now seen corresponding path program 1 times [2022-07-19 21:25:52,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:52,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116299974] [2022-07-19 21:25:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:52,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:52,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:52,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:52,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116299974] [2022-07-19 21:25:52,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116299974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:52,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:52,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:52,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68712622] [2022-07-19 21:25:52,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:52,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:52,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:52,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:52,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:52,388 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:25:52,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 268 transitions, 594 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:52,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:25:52,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:53,110 INFO L129 PetriNetUnfolder]: 826/2767 cut-off events. [2022-07-19 21:25:53,110 INFO L130 PetriNetUnfolder]: For 221/261 co-relation queries the response was YES. [2022-07-19 21:25:53,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4290 conditions, 2767 events. 826/2767 cut-off events. For 221/261 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 24968 event pairs, 152 based on Foata normal form. 1/2644 useless extension candidates. Maximal degree in co-relation 1853. Up to 336 conditions per place. [2022-07-19 21:25:53,141 INFO L132 encePairwiseOnDemand]: 271/286 looper letters, 79 selfloop transitions, 37 changer transitions 14/368 dead transitions. [2022-07-19 21:25:53,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 368 transitions, 1075 flow [2022-07-19 21:25:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:25:53,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:25:53,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4051 transitions. [2022-07-19 21:25:53,151 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8852709790209791 [2022-07-19 21:25:53,151 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4051 transitions. [2022-07-19 21:25:53,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4051 transitions. [2022-07-19 21:25:53,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:53,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4051 transitions. [2022-07-19 21:25:53,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 253.1875) internal successors, (4051), 16 states have internal predecessors, (4051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,175 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,175 INFO L186 Difference]: Start difference. First operand has 254 places, 268 transitions, 594 flow. Second operand 16 states and 4051 transitions. [2022-07-19 21:25:53,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 368 transitions, 1075 flow [2022-07-19 21:25:53,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 368 transitions, 1066 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-19 21:25:53,183 INFO L242 Difference]: Finished difference. Result has 281 places, 302 transitions, 845 flow [2022-07-19 21:25:53,184 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=845, PETRI_PLACES=281, PETRI_TRANSITIONS=302} [2022-07-19 21:25:53,185 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 25 predicate places. [2022-07-19 21:25:53,185 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 302 transitions, 845 flow [2022-07-19 21:25:53,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,187 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:53,187 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:25:53,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:25:53,187 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:53,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:53,188 INFO L85 PathProgramCache]: Analyzing trace with hash -193750373, now seen corresponding path program 1 times [2022-07-19 21:25:53,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:53,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601866650] [2022-07-19 21:25:53,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:53,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:53,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:53,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:53,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601866650] [2022-07-19 21:25:53,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601866650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:53,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:53,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:53,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183281876] [2022-07-19 21:25:53,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:53,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:53,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:53,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:53,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:53,353 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 286 [2022-07-19 21:25:53,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 302 transitions, 845 flow. Second operand has 7 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,355 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:53,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 286 [2022-07-19 21:25:53,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:53,828 INFO L129 PetriNetUnfolder]: 303/2359 cut-off events. [2022-07-19 21:25:53,828 INFO L130 PetriNetUnfolder]: For 1325/1560 co-relation queries the response was YES. [2022-07-19 21:25:53,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4121 conditions, 2359 events. 303/2359 cut-off events. For 1325/1560 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 23176 event pairs, 83 based on Foata normal form. 20/2205 useless extension candidates. Maximal degree in co-relation 4083. Up to 161 conditions per place. [2022-07-19 21:25:53,860 INFO L132 encePairwiseOnDemand]: 278/286 looper letters, 21 selfloop transitions, 1 changer transitions 20/322 dead transitions. [2022-07-19 21:25:53,860 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 322 transitions, 982 flow [2022-07-19 21:25:53,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:25:53,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:25:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2320 transitions. [2022-07-19 21:25:53,866 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9013209013209014 [2022-07-19 21:25:53,866 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2320 transitions. [2022-07-19 21:25:53,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2320 transitions. [2022-07-19 21:25:53,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:53,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2320 transitions. [2022-07-19 21:25:53,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 257.77777777777777) internal successors, (2320), 9 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 286.0) internal successors, (2860), 10 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,884 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 286.0) internal successors, (2860), 10 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,885 INFO L186 Difference]: Start difference. First operand has 281 places, 302 transitions, 845 flow. Second operand 9 states and 2320 transitions. [2022-07-19 21:25:53,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 322 transitions, 982 flow [2022-07-19 21:25:53,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 322 transitions, 978 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:53,908 INFO L242 Difference]: Finished difference. Result has 292 places, 302 transitions, 858 flow [2022-07-19 21:25:53,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=858, PETRI_PLACES=292, PETRI_TRANSITIONS=302} [2022-07-19 21:25:53,911 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 36 predicate places. [2022-07-19 21:25:53,911 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 302 transitions, 858 flow [2022-07-19 21:25:53,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,917 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:53,917 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:25:53,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:25:53,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:53,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1131960393, now seen corresponding path program 1 times [2022-07-19 21:25:53,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:53,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121364679] [2022-07-19 21:25:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:53,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:53,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:53,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:53,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121364679] [2022-07-19 21:25:53,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121364679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:53,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:53,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:53,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421507335] [2022-07-19 21:25:53,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:53,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:53,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:53,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:53,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:53,993 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 286 [2022-07-19 21:25:53,994 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 302 transitions, 858 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:53,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 286 [2022-07-19 21:25:53,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:54,652 INFO L129 PetriNetUnfolder]: 506/4206 cut-off events. [2022-07-19 21:25:54,652 INFO L130 PetriNetUnfolder]: For 2284/2425 co-relation queries the response was YES. [2022-07-19 21:25:54,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7194 conditions, 4206 events. 506/4206 cut-off events. For 2284/2425 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 44929 event pairs, 111 based on Foata normal form. 51/3953 useless extension candidates. Maximal degree in co-relation 7168. Up to 305 conditions per place. [2022-07-19 21:25:54,702 INFO L132 encePairwiseOnDemand]: 276/286 looper letters, 18 selfloop transitions, 6 changer transitions 0/310 dead transitions. [2022-07-19 21:25:54,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 310 transitions, 926 flow [2022-07-19 21:25:54,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:54,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:54,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2022-07-19 21:25:54,706 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9452214452214452 [2022-07-19 21:25:54,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2022-07-19 21:25:54,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2022-07-19 21:25:54,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:54,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2022-07-19 21:25:54,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,711 INFO L186 Difference]: Start difference. First operand has 292 places, 302 transitions, 858 flow. Second operand 3 states and 811 transitions. [2022-07-19 21:25:54,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 310 transitions, 926 flow [2022-07-19 21:25:54,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 310 transitions, 913 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-07-19 21:25:54,744 INFO L242 Difference]: Finished difference. Result has 283 places, 306 transitions, 893 flow [2022-07-19 21:25:54,745 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=893, PETRI_PLACES=283, PETRI_TRANSITIONS=306} [2022-07-19 21:25:54,748 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 27 predicate places. [2022-07-19 21:25:54,748 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 306 transitions, 893 flow [2022-07-19 21:25:54,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,749 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:54,749 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:25:54,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:25:54,749 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:54,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:54,753 INFO L85 PathProgramCache]: Analyzing trace with hash 393859959, now seen corresponding path program 2 times [2022-07-19 21:25:54,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:54,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764691240] [2022-07-19 21:25:54,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:54,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:54,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:54,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:54,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764691240] [2022-07-19 21:25:54,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764691240] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:54,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:54,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:54,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270042186] [2022-07-19 21:25:54,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:54,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:54,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:54,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:54,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:54,813 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 286 [2022-07-19 21:25:54,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 306 transitions, 893 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:54,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 286 [2022-07-19 21:25:54,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:55,198 INFO L129 PetriNetUnfolder]: 300/2558 cut-off events. [2022-07-19 21:25:55,198 INFO L130 PetriNetUnfolder]: For 1400/1564 co-relation queries the response was YES. [2022-07-19 21:25:55,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4460 conditions, 2558 events. 300/2558 cut-off events. For 1400/1564 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 23974 event pairs, 69 based on Foata normal form. 49/2440 useless extension candidates. Maximal degree in co-relation 3766. Up to 173 conditions per place. [2022-07-19 21:25:55,222 INFO L132 encePairwiseOnDemand]: 278/286 looper letters, 24 selfloop transitions, 4 changer transitions 0/314 dead transitions. [2022-07-19 21:25:55,222 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 314 transitions, 977 flow [2022-07-19 21:25:55,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:55,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2022-07-19 21:25:55,225 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9452214452214452 [2022-07-19 21:25:55,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2022-07-19 21:25:55,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2022-07-19 21:25:55,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:55,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2022-07-19 21:25:55,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,229 INFO L186 Difference]: Start difference. First operand has 283 places, 306 transitions, 893 flow. Second operand 3 states and 811 transitions. [2022-07-19 21:25:55,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 314 transitions, 977 flow [2022-07-19 21:25:55,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 314 transitions, 965 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:55,246 INFO L242 Difference]: Finished difference. Result has 285 places, 310 transitions, 929 flow [2022-07-19 21:25:55,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=929, PETRI_PLACES=285, PETRI_TRANSITIONS=310} [2022-07-19 21:25:55,247 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 29 predicate places. [2022-07-19 21:25:55,247 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 310 transitions, 929 flow [2022-07-19 21:25:55,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,248 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:55,248 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:25:55,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:25:55,249 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:55,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:55,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1181364599, now seen corresponding path program 1 times [2022-07-19 21:25:55,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:55,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15934647] [2022-07-19 21:25:55,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:55,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:55,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:55,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15934647] [2022-07-19 21:25:55,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15934647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:55,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:55,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:55,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378304127] [2022-07-19 21:25:55,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:55,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:55,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:55,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:55,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:55,401 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:25:55,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 310 transitions, 929 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:55,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:25:55,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:56,396 INFO L129 PetriNetUnfolder]: 1089/4618 cut-off events. [2022-07-19 21:25:56,397 INFO L130 PetriNetUnfolder]: For 3676/3858 co-relation queries the response was YES. [2022-07-19 21:25:56,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10273 conditions, 4618 events. 1089/4618 cut-off events. For 3676/3858 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 51003 event pairs, 512 based on Foata normal form. 3/4401 useless extension candidates. Maximal degree in co-relation 8434. Up to 1532 conditions per place. [2022-07-19 21:25:56,459 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 109 selfloop transitions, 31 changer transitions 28/414 dead transitions. [2022-07-19 21:25:56,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 414 transitions, 1728 flow [2022-07-19 21:25:56,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:25:56,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:25:56,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6015 transitions. [2022-07-19 21:25:56,474 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8763111888111889 [2022-07-19 21:25:56,474 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6015 transitions. [2022-07-19 21:25:56,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6015 transitions. [2022-07-19 21:25:56,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:56,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6015 transitions. [2022-07-19 21:25:56,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 250.625) internal successors, (6015), 24 states have internal predecessors, (6015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,522 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,523 INFO L186 Difference]: Start difference. First operand has 285 places, 310 transitions, 929 flow. Second operand 24 states and 6015 transitions. [2022-07-19 21:25:56,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 414 transitions, 1728 flow [2022-07-19 21:25:56,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 414 transitions, 1716 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-07-19 21:25:56,561 INFO L242 Difference]: Finished difference. Result has 326 places, 339 transitions, 1237 flow [2022-07-19 21:25:56,562 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1237, PETRI_PLACES=326, PETRI_TRANSITIONS=339} [2022-07-19 21:25:56,562 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 70 predicate places. [2022-07-19 21:25:56,562 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 339 transitions, 1237 flow [2022-07-19 21:25:56,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,564 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:56,564 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:25:56,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:25:56,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:56,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:56,565 INFO L85 PathProgramCache]: Analyzing trace with hash 732473581, now seen corresponding path program 2 times [2022-07-19 21:25:56,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:56,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68338519] [2022-07-19 21:25:56,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:56,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:56,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:56,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:56,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68338519] [2022-07-19 21:25:56,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68338519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:56,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:56,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:56,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956121779] [2022-07-19 21:25:56,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:56,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:56,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:56,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:56,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:56,687 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:25:56,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 339 transitions, 1237 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:56,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:25:56,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:57,773 INFO L129 PetriNetUnfolder]: 1156/4930 cut-off events. [2022-07-19 21:25:57,774 INFO L130 PetriNetUnfolder]: For 12704/12846 co-relation queries the response was YES. [2022-07-19 21:25:57,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13693 conditions, 4930 events. 1156/4930 cut-off events. For 12704/12846 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 54947 event pairs, 548 based on Foata normal form. 4/4676 useless extension candidates. Maximal degree in co-relation 13619. Up to 1640 conditions per place. [2022-07-19 21:25:57,844 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 119 selfloop transitions, 36 changer transitions 16/417 dead transitions. [2022-07-19 21:25:57,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 417 transitions, 2151 flow [2022-07-19 21:25:57,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:25:57,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:25:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4017 transitions. [2022-07-19 21:25:57,852 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8778409090909091 [2022-07-19 21:25:57,853 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4017 transitions. [2022-07-19 21:25:57,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4017 transitions. [2022-07-19 21:25:57,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:57,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4017 transitions. [2022-07-19 21:25:57,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 251.0625) internal successors, (4017), 16 states have internal predecessors, (4017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,870 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,870 INFO L186 Difference]: Start difference. First operand has 326 places, 339 transitions, 1237 flow. Second operand 16 states and 4017 transitions. [2022-07-19 21:25:57,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 417 transitions, 2151 flow [2022-07-19 21:25:57,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 417 transitions, 2004 flow, removed 71 selfloop flow, removed 3 redundant places. [2022-07-19 21:25:57,947 INFO L242 Difference]: Finished difference. Result has 347 places, 363 transitions, 1565 flow [2022-07-19 21:25:57,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1565, PETRI_PLACES=347, PETRI_TRANSITIONS=363} [2022-07-19 21:25:57,950 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 91 predicate places. [2022-07-19 21:25:57,951 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 363 transitions, 1565 flow [2022-07-19 21:25:57,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,951 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:57,952 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:25:57,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:25:57,952 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:57,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:57,953 INFO L85 PathProgramCache]: Analyzing trace with hash -557087307, now seen corresponding path program 3 times [2022-07-19 21:25:57,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:57,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675392568] [2022-07-19 21:25:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:57,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:58,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:58,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:58,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675392568] [2022-07-19 21:25:58,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675392568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:58,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:58,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:58,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713689378] [2022-07-19 21:25:58,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:58,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:58,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:58,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:58,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:58,079 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:25:58,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 363 transitions, 1565 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:58,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:25:58,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:59,267 INFO L129 PetriNetUnfolder]: 1234/5323 cut-off events. [2022-07-19 21:25:59,268 INFO L130 PetriNetUnfolder]: For 17328/17500 co-relation queries the response was YES. [2022-07-19 21:25:59,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15821 conditions, 5323 events. 1234/5323 cut-off events. For 17328/17500 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 60342 event pairs, 578 based on Foata normal form. 8/5071 useless extension candidates. Maximal degree in co-relation 15738. Up to 1768 conditions per place. [2022-07-19 21:25:59,342 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 128 selfloop transitions, 45 changer transitions 14/433 dead transitions. [2022-07-19 21:25:59,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 433 transitions, 2640 flow [2022-07-19 21:25:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:25:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:25:59,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4014 transitions. [2022-07-19 21:25:59,352 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8771853146853147 [2022-07-19 21:25:59,352 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4014 transitions. [2022-07-19 21:25:59,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4014 transitions. [2022-07-19 21:25:59,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:59,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4014 transitions. [2022-07-19 21:25:59,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 250.875) internal successors, (4014), 16 states have internal predecessors, (4014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,369 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,369 INFO L186 Difference]: Start difference. First operand has 347 places, 363 transitions, 1565 flow. Second operand 16 states and 4014 transitions. [2022-07-19 21:25:59,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 433 transitions, 2640 flow [2022-07-19 21:25:59,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 433 transitions, 2314 flow, removed 163 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:59,605 INFO L242 Difference]: Finished difference. Result has 368 places, 383 transitions, 1750 flow [2022-07-19 21:25:59,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1750, PETRI_PLACES=368, PETRI_TRANSITIONS=383} [2022-07-19 21:25:59,607 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 112 predicate places. [2022-07-19 21:25:59,607 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 383 transitions, 1750 flow [2022-07-19 21:25:59,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,608 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:59,608 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:25:59,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:25:59,609 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:59,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:59,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1371012535, now seen corresponding path program 4 times [2022-07-19 21:25:59,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:59,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925297239] [2022-07-19 21:25:59,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:59,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:59,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:59,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925297239] [2022-07-19 21:25:59,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925297239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:59,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:59,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:59,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598060092] [2022-07-19 21:25:59,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:59,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:59,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:59,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:59,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:59,742 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:25:59,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 383 transitions, 1750 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:59,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:25:59,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:01,085 INFO L129 PetriNetUnfolder]: 1377/5982 cut-off events. [2022-07-19 21:26:01,086 INFO L130 PetriNetUnfolder]: For 16689/16882 co-relation queries the response was YES. [2022-07-19 21:26:01,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17550 conditions, 5982 events. 1377/5982 cut-off events. For 16689/16882 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 69818 event pairs, 653 based on Foata normal form. 3/5717 useless extension candidates. Maximal degree in co-relation 17458. Up to 1822 conditions per place. [2022-07-19 21:26:01,205 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 152 selfloop transitions, 50 changer transitions 23/471 dead transitions. [2022-07-19 21:26:01,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 471 transitions, 3092 flow [2022-07-19 21:26:01,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:26:01,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:26:01,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5261 transitions. [2022-07-19 21:26:01,397 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.875957375957376 [2022-07-19 21:26:01,397 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5261 transitions. [2022-07-19 21:26:01,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5261 transitions. [2022-07-19 21:26:01,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:01,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5261 transitions. [2022-07-19 21:26:01,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.52380952380952) internal successors, (5261), 21 states have internal predecessors, (5261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,426 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,426 INFO L186 Difference]: Start difference. First operand has 368 places, 383 transitions, 1750 flow. Second operand 21 states and 5261 transitions. [2022-07-19 21:26:01,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 471 transitions, 3092 flow [2022-07-19 21:26:01,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 471 transitions, 2948 flow, removed 64 selfloop flow, removed 3 redundant places. [2022-07-19 21:26:01,554 INFO L242 Difference]: Finished difference. Result has 398 places, 417 transitions, 2335 flow [2022-07-19 21:26:01,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1646, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2335, PETRI_PLACES=398, PETRI_TRANSITIONS=417} [2022-07-19 21:26:01,556 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 142 predicate places. [2022-07-19 21:26:01,557 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 417 transitions, 2335 flow [2022-07-19 21:26:01,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,558 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:01,558 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:26:01,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:26:01,558 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:01,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:01,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1095441069, now seen corresponding path program 5 times [2022-07-19 21:26:01,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:01,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295052980] [2022-07-19 21:26:01,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:01,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:01,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:01,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:01,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295052980] [2022-07-19 21:26:01,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295052980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:01,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:01,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:01,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767926994] [2022-07-19 21:26:01,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:01,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:01,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:01,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:01,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:01,790 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:26:01,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 417 transitions, 2335 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:01,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:26:01,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:03,253 INFO L129 PetriNetUnfolder]: 1407/6138 cut-off events. [2022-07-19 21:26:03,253 INFO L130 PetriNetUnfolder]: For 24729/24901 co-relation queries the response was YES. [2022-07-19 21:26:03,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19542 conditions, 6138 events. 1407/6138 cut-off events. For 24729/24901 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 72650 event pairs, 601 based on Foata normal form. 4/5885 useless extension candidates. Maximal degree in co-relation 19437. Up to 1778 conditions per place. [2022-07-19 21:26:03,350 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 170 selfloop transitions, 60 changer transitions 22/498 dead transitions. [2022-07-19 21:26:03,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 498 transitions, 3741 flow [2022-07-19 21:26:03,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:03,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5012 transitions. [2022-07-19 21:26:03,356 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8762237762237762 [2022-07-19 21:26:03,356 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5012 transitions. [2022-07-19 21:26:03,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5012 transitions. [2022-07-19 21:26:03,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:03,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5012 transitions. [2022-07-19 21:26:03,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 250.6) internal successors, (5012), 20 states have internal predecessors, (5012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,373 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,373 INFO L186 Difference]: Start difference. First operand has 398 places, 417 transitions, 2335 flow. Second operand 20 states and 5012 transitions. [2022-07-19 21:26:03,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 498 transitions, 3741 flow [2022-07-19 21:26:03,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 498 transitions, 3403 flow, removed 169 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:03,692 INFO L242 Difference]: Finished difference. Result has 428 places, 449 transitions, 2779 flow [2022-07-19 21:26:03,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2779, PETRI_PLACES=428, PETRI_TRANSITIONS=449} [2022-07-19 21:26:03,694 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 172 predicate places. [2022-07-19 21:26:03,694 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 449 transitions, 2779 flow [2022-07-19 21:26:03,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,695 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:03,695 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:26:03,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:26:03,695 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:03,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:03,696 INFO L85 PathProgramCache]: Analyzing trace with hash 373473445, now seen corresponding path program 6 times [2022-07-19 21:26:03,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:03,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380267496] [2022-07-19 21:26:03,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:03,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:03,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:03,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:03,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380267496] [2022-07-19 21:26:03,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380267496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:03,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:03,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:03,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604157948] [2022-07-19 21:26:03,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:03,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:03,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:03,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:03,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:03,816 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:26:03,818 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 449 transitions, 2779 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:03,818 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:26:03,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:05,299 INFO L129 PetriNetUnfolder]: 1452/6380 cut-off events. [2022-07-19 21:26:05,299 INFO L130 PetriNetUnfolder]: For 30188/30380 co-relation queries the response was YES. [2022-07-19 21:26:05,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20880 conditions, 6380 events. 1452/6380 cut-off events. For 30188/30380 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 76484 event pairs, 511 based on Foata normal form. 4/6138 useless extension candidates. Maximal degree in co-relation 20761. Up to 1492 conditions per place. [2022-07-19 21:26:05,390 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 200 selfloop transitions, 103 changer transitions 26/575 dead transitions. [2022-07-19 21:26:05,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 575 transitions, 4587 flow [2022-07-19 21:26:05,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:26:05,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:26:05,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6012 transitions. [2022-07-19 21:26:05,398 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8758741258741258 [2022-07-19 21:26:05,398 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6012 transitions. [2022-07-19 21:26:05,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6012 transitions. [2022-07-19 21:26:05,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:05,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6012 transitions. [2022-07-19 21:26:05,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 250.5) internal successors, (6012), 24 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,421 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,421 INFO L186 Difference]: Start difference. First operand has 428 places, 449 transitions, 2779 flow. Second operand 24 states and 6012 transitions. [2022-07-19 21:26:05,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 575 transitions, 4587 flow [2022-07-19 21:26:05,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 575 transitions, 4273 flow, removed 157 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:05,704 INFO L242 Difference]: Finished difference. Result has 466 places, 475 transitions, 3279 flow [2022-07-19 21:26:05,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3279, PETRI_PLACES=466, PETRI_TRANSITIONS=475} [2022-07-19 21:26:05,707 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 210 predicate places. [2022-07-19 21:26:05,708 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 475 transitions, 3279 flow [2022-07-19 21:26:05,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,709 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:05,709 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:26:05,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:26:05,709 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:05,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:05,710 INFO L85 PathProgramCache]: Analyzing trace with hash 595245651, now seen corresponding path program 7 times [2022-07-19 21:26:05,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:05,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606886752] [2022-07-19 21:26:05,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:05,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:05,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:05,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606886752] [2022-07-19 21:26:05,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606886752] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:05,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:05,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:05,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441346894] [2022-07-19 21:26:05,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:05,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:05,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:05,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:05,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:05,943 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:26:05,945 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 475 transitions, 3279 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:05,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:26:05,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:07,555 INFO L129 PetriNetUnfolder]: 1500/6821 cut-off events. [2022-07-19 21:26:07,555 INFO L130 PetriNetUnfolder]: For 36692/37024 co-relation queries the response was YES. [2022-07-19 21:26:07,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22835 conditions, 6821 events. 1500/6821 cut-off events. For 36692/37024 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 83395 event pairs, 587 based on Foata normal form. 42/6608 useless extension candidates. Maximal degree in co-relation 22698. Up to 1954 conditions per place. [2022-07-19 21:26:07,643 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 188 selfloop transitions, 97 changer transitions 24/555 dead transitions. [2022-07-19 21:26:07,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 555 transitions, 4868 flow [2022-07-19 21:26:07,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:26:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:26:07,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5507 transitions. [2022-07-19 21:26:07,649 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8752383979656707 [2022-07-19 21:26:07,650 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5507 transitions. [2022-07-19 21:26:07,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5507 transitions. [2022-07-19 21:26:07,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:07,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5507 transitions. [2022-07-19 21:26:07,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 250.3181818181818) internal successors, (5507), 22 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,671 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,671 INFO L186 Difference]: Start difference. First operand has 466 places, 475 transitions, 3279 flow. Second operand 22 states and 5507 transitions. [2022-07-19 21:26:07,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 555 transitions, 4868 flow [2022-07-19 21:26:07,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 555 transitions, 4804 flow, removed 29 selfloop flow, removed 3 redundant places. [2022-07-19 21:26:07,956 INFO L242 Difference]: Finished difference. Result has 495 places, 499 transitions, 3945 flow [2022-07-19 21:26:07,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=3221, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3945, PETRI_PLACES=495, PETRI_TRANSITIONS=499} [2022-07-19 21:26:07,958 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 239 predicate places. [2022-07-19 21:26:07,958 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 499 transitions, 3945 flow [2022-07-19 21:26:07,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,959 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:07,959 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:26:07,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:26:07,959 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:07,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:07,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1428097059, now seen corresponding path program 8 times [2022-07-19 21:26:07,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:07,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451652312] [2022-07-19 21:26:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:07,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:08,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:08,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:08,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451652312] [2022-07-19 21:26:08,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451652312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:08,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:08,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:08,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319772893] [2022-07-19 21:26:08,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:08,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:08,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:08,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:08,076 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:26:08,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 499 transitions, 3945 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:08,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:26:08,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:09,657 INFO L129 PetriNetUnfolder]: 1485/6506 cut-off events. [2022-07-19 21:26:09,657 INFO L130 PetriNetUnfolder]: For 42522/42730 co-relation queries the response was YES. [2022-07-19 21:26:09,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23611 conditions, 6506 events. 1485/6506 cut-off events. For 42522/42730 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 78066 event pairs, 586 based on Foata normal form. 23/6271 useless extension candidates. Maximal degree in co-relation 23463. Up to 2015 conditions per place. [2022-07-19 21:26:09,756 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 187 selfloop transitions, 103 changer transitions 23/559 dead transitions. [2022-07-19 21:26:09,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 559 transitions, 5334 flow [2022-07-19 21:26:09,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:09,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2022-07-19 21:26:09,763 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2022-07-19 21:26:09,763 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2022-07-19 21:26:09,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2022-07-19 21:26:09,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:09,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2022-07-19 21:26:09,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,926 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,926 INFO L186 Difference]: Start difference. First operand has 495 places, 499 transitions, 3945 flow. Second operand 18 states and 4511 transitions. [2022-07-19 21:26:09,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 559 transitions, 5334 flow [2022-07-19 21:26:10,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 559 transitions, 5114 flow, removed 102 selfloop flow, removed 4 redundant places. [2022-07-19 21:26:10,259 INFO L242 Difference]: Finished difference. Result has 512 places, 514 transitions, 4379 flow [2022-07-19 21:26:10,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=3746, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4379, PETRI_PLACES=512, PETRI_TRANSITIONS=514} [2022-07-19 21:26:10,261 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 256 predicate places. [2022-07-19 21:26:10,261 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 514 transitions, 4379 flow [2022-07-19 21:26:10,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,261 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:10,262 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:26:10,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:26:10,262 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:10,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:10,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1079080099, now seen corresponding path program 9 times [2022-07-19 21:26:10,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:10,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253521096] [2022-07-19 21:26:10,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:10,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:10,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:10,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253521096] [2022-07-19 21:26:10,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253521096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:10,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:10,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:10,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224573323] [2022-07-19 21:26:10,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:10,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:10,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:10,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:10,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:10,387 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:26:10,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 514 transitions, 4379 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:10,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:26:10,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:12,035 INFO L129 PetriNetUnfolder]: 1536/7064 cut-off events. [2022-07-19 21:26:12,035 INFO L130 PetriNetUnfolder]: For 48851/49107 co-relation queries the response was YES. [2022-07-19 21:26:12,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25480 conditions, 7064 events. 1536/7064 cut-off events. For 48851/49107 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 87286 event pairs, 647 based on Foata normal form. 3/6791 useless extension candidates. Maximal degree in co-relation 25329. Up to 2069 conditions per place. [2022-07-19 21:26:12,137 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 209 selfloop transitions, 111 changer transitions 19/585 dead transitions. [2022-07-19 21:26:12,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 585 transitions, 6045 flow [2022-07-19 21:26:12,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:12,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5008 transitions. [2022-07-19 21:26:12,143 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8755244755244755 [2022-07-19 21:26:12,143 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5008 transitions. [2022-07-19 21:26:12,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5008 transitions. [2022-07-19 21:26:12,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:12,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5008 transitions. [2022-07-19 21:26:12,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 250.4) internal successors, (5008), 20 states have internal predecessors, (5008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,161 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,161 INFO L186 Difference]: Start difference. First operand has 512 places, 514 transitions, 4379 flow. Second operand 20 states and 5008 transitions. [2022-07-19 21:26:12,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 585 transitions, 6045 flow [2022-07-19 21:26:12,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 585 transitions, 5647 flow, removed 167 selfloop flow, removed 7 redundant places. [2022-07-19 21:26:12,503 INFO L242 Difference]: Finished difference. Result has 536 places, 541 transitions, 4998 flow [2022-07-19 21:26:12,505 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=4102, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4998, PETRI_PLACES=536, PETRI_TRANSITIONS=541} [2022-07-19 21:26:12,505 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 280 predicate places. [2022-07-19 21:26:12,506 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 541 transitions, 4998 flow [2022-07-19 21:26:12,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,506 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:12,507 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:26:12,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:26:12,507 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:12,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:12,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1099183391, now seen corresponding path program 10 times [2022-07-19 21:26:12,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:12,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843244347] [2022-07-19 21:26:12,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:12,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:12,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:12,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:12,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843244347] [2022-07-19 21:26:12,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843244347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:12,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:12,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:12,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569109699] [2022-07-19 21:26:12,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:12,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:12,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:12,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:12,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:12,651 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:26:12,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 541 transitions, 4998 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:12,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:26:12,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:14,429 INFO L129 PetriNetUnfolder]: 1578/7316 cut-off events. [2022-07-19 21:26:14,429 INFO L130 PetriNetUnfolder]: For 42205/42413 co-relation queries the response was YES. [2022-07-19 21:26:14,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26764 conditions, 7316 events. 1578/7316 cut-off events. For 42205/42413 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 91296 event pairs, 609 based on Foata normal form. 12/7070 useless extension candidates. Maximal degree in co-relation 26604. Up to 2102 conditions per place. [2022-07-19 21:26:14,531 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 237 selfloop transitions, 102 changer transitions 15/600 dead transitions. [2022-07-19 21:26:14,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 600 transitions, 6518 flow [2022-07-19 21:26:14,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:26:14,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:26:14,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4265 transitions. [2022-07-19 21:26:14,536 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8772110242698478 [2022-07-19 21:26:14,536 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4265 transitions. [2022-07-19 21:26:14,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4265 transitions. [2022-07-19 21:26:14,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:14,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4265 transitions. [2022-07-19 21:26:14,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.88235294117646) internal successors, (4265), 17 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,544 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,544 INFO L186 Difference]: Start difference. First operand has 536 places, 541 transitions, 4998 flow. Second operand 17 states and 4265 transitions. [2022-07-19 21:26:14,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 600 transitions, 6518 flow [2022-07-19 21:26:14,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 600 transitions, 6258 flow, removed 107 selfloop flow, removed 3 redundant places. [2022-07-19 21:26:14,842 INFO L242 Difference]: Finished difference. Result has 553 places, 563 transitions, 5497 flow [2022-07-19 21:26:14,843 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=4819, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5497, PETRI_PLACES=553, PETRI_TRANSITIONS=563} [2022-07-19 21:26:14,843 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 297 predicate places. [2022-07-19 21:26:14,845 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 563 transitions, 5497 flow [2022-07-19 21:26:14,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,846 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:14,846 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:26:14,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:26:14,847 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:14,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:14,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1336984687, now seen corresponding path program 11 times [2022-07-19 21:26:14,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:14,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258435555] [2022-07-19 21:26:14,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:14,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:14,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:14,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258435555] [2022-07-19 21:26:14,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258435555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:14,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:14,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:14,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589223813] [2022-07-19 21:26:14,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:14,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:14,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:14,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:14,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:14,955 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:26:14,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 563 transitions, 5497 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:14,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:26:14,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:16,937 INFO L129 PetriNetUnfolder]: 1628/7476 cut-off events. [2022-07-19 21:26:16,937 INFO L130 PetriNetUnfolder]: For 41207/41471 co-relation queries the response was YES. [2022-07-19 21:26:17,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27622 conditions, 7476 events. 1628/7476 cut-off events. For 41207/41471 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 93842 event pairs, 665 based on Foata normal form. 3/7205 useless extension candidates. Maximal degree in co-relation 27458. Up to 2134 conditions per place. [2022-07-19 21:26:17,069 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 235 selfloop transitions, 125 changer transitions 16/622 dead transitions. [2022-07-19 21:26:17,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 622 transitions, 6996 flow [2022-07-19 21:26:17,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:26:17,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:26:17,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4265 transitions. [2022-07-19 21:26:17,073 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8772110242698478 [2022-07-19 21:26:17,074 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4265 transitions. [2022-07-19 21:26:17,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4265 transitions. [2022-07-19 21:26:17,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:17,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4265 transitions. [2022-07-19 21:26:17,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.88235294117646) internal successors, (4265), 17 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,086 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,086 INFO L186 Difference]: Start difference. First operand has 553 places, 563 transitions, 5497 flow. Second operand 17 states and 4265 transitions. [2022-07-19 21:26:17,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 622 transitions, 6996 flow [2022-07-19 21:26:17,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 622 transitions, 6835 flow, removed 55 selfloop flow, removed 3 redundant places. [2022-07-19 21:26:17,590 INFO L242 Difference]: Finished difference. Result has 572 places, 584 transitions, 6126 flow [2022-07-19 21:26:17,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=5357, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6126, PETRI_PLACES=572, PETRI_TRANSITIONS=584} [2022-07-19 21:26:17,592 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 316 predicate places. [2022-07-19 21:26:17,592 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 584 transitions, 6126 flow [2022-07-19 21:26:17,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,592 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:17,593 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:26:17,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:26:17,593 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:17,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:17,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1288177509, now seen corresponding path program 12 times [2022-07-19 21:26:17,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:17,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721467988] [2022-07-19 21:26:17,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:17,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:17,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:17,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:17,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721467988] [2022-07-19 21:26:17,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721467988] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:17,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:17,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:17,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907946919] [2022-07-19 21:26:17,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:17,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:17,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:17,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:17,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:17,693 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:26:17,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 584 transitions, 6126 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:17,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:26:17,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:19,713 INFO L129 PetriNetUnfolder]: 1633/7803 cut-off events. [2022-07-19 21:26:19,714 INFO L130 PetriNetUnfolder]: For 44343/44595 co-relation queries the response was YES. [2022-07-19 21:26:19,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28609 conditions, 7803 events. 1633/7803 cut-off events. For 44343/44595 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 99701 event pairs, 660 based on Foata normal form. 3/7534 useless extension candidates. Maximal degree in co-relation 28439. Up to 2179 conditions per place. [2022-07-19 21:26:19,834 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 233 selfloop transitions, 130 changer transitions 20/629 dead transitions. [2022-07-19 21:26:19,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 629 transitions, 7379 flow [2022-07-19 21:26:19,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:19,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:19,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2022-07-19 21:26:19,837 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2022-07-19 21:26:19,837 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2022-07-19 21:26:19,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2022-07-19 21:26:19,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:19,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2022-07-19 21:26:19,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,850 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,850 INFO L186 Difference]: Start difference. First operand has 572 places, 584 transitions, 6126 flow. Second operand 18 states and 4511 transitions. [2022-07-19 21:26:19,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 629 transitions, 7379 flow [2022-07-19 21:26:20,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 629 transitions, 7247 flow, removed 66 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:20,223 INFO L242 Difference]: Finished difference. Result has 590 places, 594 transitions, 6525 flow [2022-07-19 21:26:20,224 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=6010, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6525, PETRI_PLACES=590, PETRI_TRANSITIONS=594} [2022-07-19 21:26:20,224 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 334 predicate places. [2022-07-19 21:26:20,224 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 594 transitions, 6525 flow [2022-07-19 21:26:20,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,225 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:20,225 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:26:20,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:26:20,226 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:20,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:20,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1677599557, now seen corresponding path program 13 times [2022-07-19 21:26:20,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:20,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558311764] [2022-07-19 21:26:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:20,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:20,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:20,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558311764] [2022-07-19 21:26:20,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558311764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:20,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:20,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:20,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739887862] [2022-07-19 21:26:20,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:20,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:20,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:20,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:20,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:20,325 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:26:20,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 594 transitions, 6525 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:20,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:26:20,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:22,484 INFO L129 PetriNetUnfolder]: 1617/7816 cut-off events. [2022-07-19 21:26:22,484 INFO L130 PetriNetUnfolder]: For 44887/45092 co-relation queries the response was YES. [2022-07-19 21:26:22,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29021 conditions, 7816 events. 1617/7816 cut-off events. For 44887/45092 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 100313 event pairs, 614 based on Foata normal form. 12/7571 useless extension candidates. Maximal degree in co-relation 28847. Up to 2169 conditions per place. [2022-07-19 21:26:22,583 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 247 selfloop transitions, 119 changer transitions 24/636 dead transitions. [2022-07-19 21:26:22,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 636 transitions, 7702 flow [2022-07-19 21:26:22,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:22,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:22,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4515 transitions. [2022-07-19 21:26:22,586 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.877039627039627 [2022-07-19 21:26:22,586 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4515 transitions. [2022-07-19 21:26:22,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4515 transitions. [2022-07-19 21:26:22,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:22,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4515 transitions. [2022-07-19 21:26:22,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.83333333333334) internal successors, (4515), 18 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:22,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:22,595 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:22,595 INFO L186 Difference]: Start difference. First operand has 590 places, 594 transitions, 6525 flow. Second operand 18 states and 4515 transitions. [2022-07-19 21:26:22,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 636 transitions, 7702 flow [2022-07-19 21:26:22,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 636 transitions, 7554 flow, removed 38 selfloop flow, removed 7 redundant places. [2022-07-19 21:26:22,963 INFO L242 Difference]: Finished difference. Result has 603 places, 601 transitions, 6816 flow [2022-07-19 21:26:22,964 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=6379, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6816, PETRI_PLACES=603, PETRI_TRANSITIONS=601} [2022-07-19 21:26:22,964 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 347 predicate places. [2022-07-19 21:26:22,964 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 601 transitions, 6816 flow [2022-07-19 21:26:22,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:22,965 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:22,965 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:26:22,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 21:26:22,965 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:22,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:22,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1392374027, now seen corresponding path program 14 times [2022-07-19 21:26:22,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:22,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794397669] [2022-07-19 21:26:22,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:22,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:23,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:23,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:23,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794397669] [2022-07-19 21:26:23,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794397669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:23,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:23,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:23,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494987713] [2022-07-19 21:26:23,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:23,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:23,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:23,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:23,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:23,060 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:26:23,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 601 transitions, 6816 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:23,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:23,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:26:23,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:25,184 INFO L129 PetriNetUnfolder]: 1675/7954 cut-off events. [2022-07-19 21:26:25,184 INFO L130 PetriNetUnfolder]: For 50888/51093 co-relation queries the response was YES. [2022-07-19 21:26:25,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30534 conditions, 7954 events. 1675/7954 cut-off events. For 50888/51093 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 102113 event pairs, 587 based on Foata normal form. 4/7700 useless extension candidates. Maximal degree in co-relation 30361. Up to 2053 conditions per place. [2022-07-19 21:26:25,284 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 255 selfloop transitions, 156 changer transitions 23/680 dead transitions. [2022-07-19 21:26:25,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 680 transitions, 8591 flow [2022-07-19 21:26:25,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:26:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:26:25,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5505 transitions. [2022-07-19 21:26:25,288 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8749205340114431 [2022-07-19 21:26:25,288 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5505 transitions. [2022-07-19 21:26:25,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5505 transitions. [2022-07-19 21:26:25,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:25,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5505 transitions. [2022-07-19 21:26:25,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 250.22727272727272) internal successors, (5505), 22 states have internal predecessors, (5505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,299 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,299 INFO L186 Difference]: Start difference. First operand has 603 places, 601 transitions, 6816 flow. Second operand 22 states and 5505 transitions. [2022-07-19 21:26:25,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 680 transitions, 8591 flow [2022-07-19 21:26:25,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 680 transitions, 8472 flow, removed 52 selfloop flow, removed 6 redundant places. [2022-07-19 21:26:25,707 INFO L242 Difference]: Finished difference. Result has 630 places, 629 transitions, 7633 flow [2022-07-19 21:26:25,707 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=6699, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7633, PETRI_PLACES=630, PETRI_TRANSITIONS=629} [2022-07-19 21:26:25,707 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 374 predicate places. [2022-07-19 21:26:25,708 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 629 transitions, 7633 flow [2022-07-19 21:26:25,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,708 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:25,708 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:26:25,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 21:26:25,708 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:25,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:25,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1289975747, now seen corresponding path program 15 times [2022-07-19 21:26:25,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:25,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762157673] [2022-07-19 21:26:25,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:25,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:25,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:25,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762157673] [2022-07-19 21:26:25,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762157673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:25,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:25,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:25,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349875506] [2022-07-19 21:26:25,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:25,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:25,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:25,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:25,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:25,819 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:26:25,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 629 transitions, 7633 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:25,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:26:25,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:28,192 INFO L129 PetriNetUnfolder]: 1709/8169 cut-off events. [2022-07-19 21:26:28,192 INFO L130 PetriNetUnfolder]: For 58457/58662 co-relation queries the response was YES. [2022-07-19 21:26:28,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32546 conditions, 8169 events. 1709/8169 cut-off events. For 58457/58662 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 105382 event pairs, 599 based on Foata normal form. 4/7905 useless extension candidates. Maximal degree in co-relation 32364. Up to 2092 conditions per place. [2022-07-19 21:26:28,312 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 320 selfloop transitions, 111 changer transitions 21/698 dead transitions. [2022-07-19 21:26:28,312 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 698 transitions, 9541 flow [2022-07-19 21:26:28,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:26:28,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:26:28,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5258 transitions. [2022-07-19 21:26:28,316 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8754578754578755 [2022-07-19 21:26:28,316 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5258 transitions. [2022-07-19 21:26:28,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5258 transitions. [2022-07-19 21:26:28,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:28,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5258 transitions. [2022-07-19 21:26:28,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.38095238095238) internal successors, (5258), 21 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:28,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:28,326 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:28,327 INFO L186 Difference]: Start difference. First operand has 630 places, 629 transitions, 7633 flow. Second operand 21 states and 5258 transitions. [2022-07-19 21:26:28,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 698 transitions, 9541 flow [2022-07-19 21:26:28,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 698 transitions, 9443 flow, removed 49 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:28,785 INFO L242 Difference]: Finished difference. Result has 660 places, 655 transitions, 8522 flow [2022-07-19 21:26:28,786 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=7537, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8522, PETRI_PLACES=660, PETRI_TRANSITIONS=655} [2022-07-19 21:26:28,786 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 404 predicate places. [2022-07-19 21:26:28,786 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 655 transitions, 8522 flow [2022-07-19 21:26:28,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:28,787 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:28,787 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:26:28,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 21:26:28,787 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:28,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:28,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1950041, now seen corresponding path program 16 times [2022-07-19 21:26:28,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:28,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997650418] [2022-07-19 21:26:28,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:28,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:28,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:28,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997650418] [2022-07-19 21:26:28,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997650418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:28,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:28,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:28,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184043990] [2022-07-19 21:26:28,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:28,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:28,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:28,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:28,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:28,889 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:26:28,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 655 transitions, 8522 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:28,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:28,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:26:28,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:31,183 INFO L129 PetriNetUnfolder]: 1708/8283 cut-off events. [2022-07-19 21:26:31,183 INFO L130 PetriNetUnfolder]: For 64535/64740 co-relation queries the response was YES. [2022-07-19 21:26:31,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33597 conditions, 8283 events. 1708/8283 cut-off events. For 64535/64740 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 107483 event pairs, 597 based on Foata normal form. 4/8027 useless extension candidates. Maximal degree in co-relation 33402. Up to 2145 conditions per place. [2022-07-19 21:26:31,365 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 272 selfloop transitions, 166 changer transitions 23/707 dead transitions. [2022-07-19 21:26:31,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 707 transitions, 9976 flow [2022-07-19 21:26:31,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2022-07-19 21:26:31,369 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2022-07-19 21:26:31,369 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2022-07-19 21:26:31,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2022-07-19 21:26:31,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:31,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2022-07-19 21:26:31,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,379 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,379 INFO L186 Difference]: Start difference. First operand has 660 places, 655 transitions, 8522 flow. Second operand 18 states and 4511 transitions. [2022-07-19 21:26:31,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 707 transitions, 9976 flow [2022-07-19 21:26:31,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 707 transitions, 9738 flow, removed 119 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:31,964 INFO L242 Difference]: Finished difference. Result has 680 places, 664 transitions, 8881 flow [2022-07-19 21:26:31,964 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=8286, PETRI_DIFFERENCE_MINUEND_PLACES=656, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8881, PETRI_PLACES=680, PETRI_TRANSITIONS=664} [2022-07-19 21:26:31,965 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 424 predicate places. [2022-07-19 21:26:31,965 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 664 transitions, 8881 flow [2022-07-19 21:26:31,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,965 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:31,965 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:26:31,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 21:26:31,965 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:31,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:31,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1944847779, now seen corresponding path program 17 times [2022-07-19 21:26:31,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:31,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612366736] [2022-07-19 21:26:31,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:31,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:32,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:32,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:32,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612366736] [2022-07-19 21:26:32,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612366736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:32,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:32,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:32,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147069884] [2022-07-19 21:26:32,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:32,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:32,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:32,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:32,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:32,059 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:26:32,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 664 transitions, 8881 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:32,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:32,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:26:32,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:34,603 INFO L129 PetriNetUnfolder]: 1763/8635 cut-off events. [2022-07-19 21:26:34,603 INFO L130 PetriNetUnfolder]: For 69368/69570 co-relation queries the response was YES. [2022-07-19 21:26:34,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35756 conditions, 8635 events. 1763/8635 cut-off events. For 69368/69570 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 113100 event pairs, 609 based on Foata normal form. 4/8371 useless extension candidates. Maximal degree in co-relation 35555. Up to 2188 conditions per place. [2022-07-19 21:26:34,749 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 324 selfloop transitions, 135 changer transitions 16/721 dead transitions. [2022-07-19 21:26:34,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 721 transitions, 10633 flow [2022-07-19 21:26:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:26:34,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:26:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4264 transitions. [2022-07-19 21:26:34,752 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8770053475935828 [2022-07-19 21:26:34,752 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4264 transitions. [2022-07-19 21:26:34,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4264 transitions. [2022-07-19 21:26:34,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:34,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4264 transitions. [2022-07-19 21:26:34,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.8235294117647) internal successors, (4264), 17 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:34,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:34,761 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:34,761 INFO L186 Difference]: Start difference. First operand has 680 places, 664 transitions, 8881 flow. Second operand 17 states and 4264 transitions. [2022-07-19 21:26:34,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 721 transitions, 10633 flow [2022-07-19 21:26:35,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 721 transitions, 10373 flow, removed 53 selfloop flow, removed 6 redundant places. [2022-07-19 21:26:35,616 INFO L242 Difference]: Finished difference. Result has 694 places, 686 transitions, 9518 flow [2022-07-19 21:26:35,617 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=8635, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9518, PETRI_PLACES=694, PETRI_TRANSITIONS=686} [2022-07-19 21:26:35,617 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 438 predicate places. [2022-07-19 21:26:35,617 INFO L495 AbstractCegarLoop]: Abstraction has has 694 places, 686 transitions, 9518 flow [2022-07-19 21:26:35,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:35,618 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:35,618 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:26:35,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 21:26:35,618 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:35,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:35,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1940649487, now seen corresponding path program 18 times [2022-07-19 21:26:35,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:35,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458495465] [2022-07-19 21:26:35,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:35,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:35,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:35,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458495465] [2022-07-19 21:26:35,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458495465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:35,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:35,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:35,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106060091] [2022-07-19 21:26:35,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:35,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:35,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:35,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:35,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:35,726 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:26:35,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 694 places, 686 transitions, 9518 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:35,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:35,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:26:35,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:38,365 INFO L129 PetriNetUnfolder]: 1800/9065 cut-off events. [2022-07-19 21:26:38,365 INFO L130 PetriNetUnfolder]: For 71862/72064 co-relation queries the response was YES. [2022-07-19 21:26:38,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37620 conditions, 9065 events. 1800/9065 cut-off events. For 71862/72064 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 120591 event pairs, 613 based on Foata normal form. 4/8803 useless extension candidates. Maximal degree in co-relation 37416. Up to 2237 conditions per place. [2022-07-19 21:26:38,515 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 350 selfloop transitions, 130 changer transitions 17/743 dead transitions. [2022-07-19 21:26:38,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 743 transitions, 11304 flow [2022-07-19 21:26:38,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:26:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:26:38,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4268 transitions. [2022-07-19 21:26:38,518 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8778280542986425 [2022-07-19 21:26:38,518 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4268 transitions. [2022-07-19 21:26:38,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4268 transitions. [2022-07-19 21:26:38,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:38,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4268 transitions. [2022-07-19 21:26:38,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 251.05882352941177) internal successors, (4268), 17 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:38,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:38,525 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:38,525 INFO L186 Difference]: Start difference. First operand has 694 places, 686 transitions, 9518 flow. Second operand 17 states and 4268 transitions. [2022-07-19 21:26:38,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 743 transitions, 11304 flow [2022-07-19 21:26:39,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 706 places, 743 transitions, 11106 flow, removed 99 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:39,190 INFO L242 Difference]: Finished difference. Result has 714 places, 707 transitions, 10177 flow [2022-07-19 21:26:39,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=9334, PETRI_DIFFERENCE_MINUEND_PLACES=690, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10177, PETRI_PLACES=714, PETRI_TRANSITIONS=707} [2022-07-19 21:26:39,191 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 458 predicate places. [2022-07-19 21:26:39,192 INFO L495 AbstractCegarLoop]: Abstraction has has 714 places, 707 transitions, 10177 flow [2022-07-19 21:26:39,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:39,192 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:39,192 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:26:39,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 21:26:39,193 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:39,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:39,193 INFO L85 PathProgramCache]: Analyzing trace with hash 506742737, now seen corresponding path program 19 times [2022-07-19 21:26:39,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:39,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131801537] [2022-07-19 21:26:39,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:39,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:39,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:39,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:39,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131801537] [2022-07-19 21:26:39,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131801537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:39,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:39,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:39,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999204300] [2022-07-19 21:26:39,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:39,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:39,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:39,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:39,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:39,306 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:26:39,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 714 places, 707 transitions, 10177 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:39,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:39,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:26:39,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:42,051 INFO L129 PetriNetUnfolder]: 1805/9004 cut-off events. [2022-07-19 21:26:42,051 INFO L130 PetriNetUnfolder]: For 76006/76208 co-relation queries the response was YES. [2022-07-19 21:26:42,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38283 conditions, 9004 events. 1805/9004 cut-off events. For 76006/76208 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 119149 event pairs, 617 based on Foata normal form. 4/8738 useless extension candidates. Maximal degree in co-relation 38072. Up to 2244 conditions per place. [2022-07-19 21:26:42,199 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 348 selfloop transitions, 135 changer transitions 21/750 dead transitions. [2022-07-19 21:26:42,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 750 transitions, 11698 flow [2022-07-19 21:26:42,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:42,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:42,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4514 transitions. [2022-07-19 21:26:42,203 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8768453768453769 [2022-07-19 21:26:42,204 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4514 transitions. [2022-07-19 21:26:42,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4514 transitions. [2022-07-19 21:26:42,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:42,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4514 transitions. [2022-07-19 21:26:42,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.77777777777777) internal successors, (4514), 18 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:42,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:42,212 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:42,213 INFO L186 Difference]: Start difference. First operand has 714 places, 707 transitions, 10177 flow. Second operand 18 states and 4514 transitions. [2022-07-19 21:26:42,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 750 transitions, 11698 flow [2022-07-19 21:26:42,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 725 places, 750 transitions, 11369 flow, removed 86 selfloop flow, removed 4 redundant places. [2022-07-19 21:26:42,895 INFO L242 Difference]: Finished difference. Result has 730 places, 717 transitions, 10468 flow [2022-07-19 21:26:42,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=9885, PETRI_DIFFERENCE_MINUEND_PLACES=708, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10468, PETRI_PLACES=730, PETRI_TRANSITIONS=717} [2022-07-19 21:26:42,896 INFO L279 CegarLoopForPetriNet]: 256 programPoint places, 474 predicate places. [2022-07-19 21:26:42,896 INFO L495 AbstractCegarLoop]: Abstraction has has 730 places, 717 transitions, 10468 flow [2022-07-19 21:26:42,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:42,896 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:42,897 INFO L200 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, 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, 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, 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, 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] [2022-07-19 21:26:42,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 21:26:42,897 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:42,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:42,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1145906917, now seen corresponding path program 20 times [2022-07-19 21:26:42,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:42,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468697455] [2022-07-19 21:26:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:42,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:42,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:42,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468697455] [2022-07-19 21:26:42,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468697455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:42,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:42,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:42,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905382744] [2022-07-19 21:26:42,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:42,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:42,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:42,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:42,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:42,991 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-07-19 21:26:42,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 730 places, 717 transitions, 10468 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:42,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:42,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-07-19 21:26:42,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand