./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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-chromosome-symm.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 c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:03:43,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:03:43,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:03:43,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:03:43,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:03:43,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:03:43,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:03:43,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:03:43,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:03:43,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:03:43,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:03:43,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:03:43,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:03:43,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:03:43,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:03:43,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:03:43,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:03:43,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:03:43,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:03:43,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:03:43,372 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:03:43,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:03:43,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:03:43,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:03:43,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:03:43,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:03:43,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:03:43,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:03:43,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:03:43,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:03:43,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:03:43,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:03:43,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:03:43,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:03:43,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:03:43,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:03:43,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:03:43,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:03:43,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:03:43,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:03:43,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:03:43,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:03:43,397 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:03:43,425 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:03:43,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:03:43,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:03:43,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:03:43,426 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:03:43,427 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:03:43,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:03:43,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:03:43,428 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:03:43,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:03:43,429 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:03:43,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:03:43,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:03:43,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:03:43,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:03:43,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:03:43,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:03:43,430 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:03:43,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:03:43,431 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:03:43,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:03:43,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:03:43,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:03:43,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:03:43,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:03:43,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:03:43,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:03:43,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:03:43,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:03:43,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:03:43,434 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:03:43,434 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:03:43,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:03:43,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f [2022-07-13 22:03:43,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:03:43,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:03:43,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:03:43,692 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:03:43,692 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:03:43,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-07-13 22:03:43,779 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea76abaf2/deeaa86cf1ca48cc81f67fc73a2afbc0/FLAG1ddb26a18 [2022-07-13 22:03:44,120 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:03:44,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-07-13 22:03:44,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea76abaf2/deeaa86cf1ca48cc81f67fc73a2afbc0/FLAG1ddb26a18 [2022-07-13 22:03:44,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea76abaf2/deeaa86cf1ca48cc81f67fc73a2afbc0 [2022-07-13 22:03:44,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:03:44,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:03:44,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:03:44,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:03:44,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:03:44,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:03:44" (1/1) ... [2022-07-13 22:03:44,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e98fcb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:44, skipping insertion in model container [2022-07-13 22:03:44,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:03:44" (1/1) ... [2022-07-13 22:03:44,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:03:44,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:03:44,766 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-chromosome-symm.wvr.c[2695,2708] [2022-07-13 22:03:44,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:03:44,780 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:03:44,797 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-chromosome-symm.wvr.c[2695,2708] [2022-07-13 22:03:44,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:03:44,814 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:03:44,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:44 WrapperNode [2022-07-13 22:03:44,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:03:44,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:03:44,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:03:44,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:03:44,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:44" (1/1) ... [2022-07-13 22:03:44,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:44" (1/1) ... [2022-07-13 22:03:44,859 INFO L137 Inliner]: procedures = 25, calls = 37, calls flagged for inlining = 15, calls inlined = 19, statements flattened = 202 [2022-07-13 22:03:44,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:03:44,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:03:44,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:03:44,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:03:44,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:44" (1/1) ... [2022-07-13 22:03:44,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:44" (1/1) ... [2022-07-13 22:03:44,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:44" (1/1) ... [2022-07-13 22:03:44,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:44" (1/1) ... [2022-07-13 22:03:44,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:44" (1/1) ... [2022-07-13 22:03:44,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:44" (1/1) ... [2022-07-13 22:03:44,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:44" (1/1) ... [2022-07-13 22:03:44,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:03:44,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:03:44,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:03:44,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:03:44,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:44" (1/1) ... [2022-07-13 22:03:44,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:03:44,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:44,927 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) [2022-07-13 22:03:44,934 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 [2022-07-13 22:03:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:03:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:03:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:03:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:03:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:03:44,970 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:03:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:03:44,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:03:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:03:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:03:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:03:44,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:03:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:03:44,975 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:03:45,052 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:03:45,054 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:03:45,347 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:03:45,358 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:03:45,359 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-13 22:03:45,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:03:45 BoogieIcfgContainer [2022-07-13 22:03:45,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:03:45,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:03:45,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:03:45,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:03:45,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:03:44" (1/3) ... [2022-07-13 22:03:45,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a128bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:03:45, skipping insertion in model container [2022-07-13 22:03:45,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:44" (2/3) ... [2022-07-13 22:03:45,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a128bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:03:45, skipping insertion in model container [2022-07-13 22:03:45,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:03:45" (3/3) ... [2022-07-13 22:03:45,369 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2022-07-13 22:03:45,374 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:03:45,382 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:03:45,382 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:03:45,382 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:03:45,472 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 22:03:45,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 256 places, 272 transitions, 560 flow [2022-07-13 22:03:45,628 INFO L129 PetriNetUnfolder]: 23/270 cut-off events. [2022-07-13 22:03:45,628 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:03:45,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 270 events. 23/270 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 327 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 171. Up to 2 conditions per place. [2022-07-13 22:03:45,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 272 transitions, 560 flow [2022-07-13 22:03:45,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 261 transitions, 534 flow [2022-07-13 22:03:45,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:03:45,665 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@5e08475c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@52432a60 [2022-07-13 22:03:45,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-13 22:03:45,720 INFO L129 PetriNetUnfolder]: 23/260 cut-off events. [2022-07-13 22:03:45,720 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:03:45,720 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:45,721 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:45,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:45,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:45,729 INFO L85 PathProgramCache]: Analyzing trace with hash 63985711, now seen corresponding path program 1 times [2022-07-13 22:03:45,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:45,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076675233] [2022-07-13 22:03:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:45,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:03:46,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:46,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076675233] [2022-07-13 22:03:46,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076675233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:46,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:46,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:03:46,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050022731] [2022-07-13 22:03:46,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:46,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:03:46,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:46,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:03:46,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:03:46,064 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 272 [2022-07-13 22:03:46,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 261 transitions, 534 flow. Second operand has 2 states, 2 states have (on average 252.5) internal successors, (505), 2 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:46,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 272 [2022-07-13 22:03:46,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:46,134 INFO L129 PetriNetUnfolder]: 6/244 cut-off events. [2022-07-13 22:03:46,134 INFO L130 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-07-13 22:03:46,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 244 events. 6/244 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 308 event pairs, 0 based on Foata normal form. 20/245 useless extension candidates. Maximal degree in co-relation 162. Up to 5 conditions per place. [2022-07-13 22:03:46,141 INFO L132 encePairwiseOnDemand]: 255/272 looper letters, 4 selfloop transitions, 0 changer transitions 7/244 dead transitions. [2022-07-13 22:03:46,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 244 transitions, 508 flow [2022-07-13 22:03:46,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:03:46,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 22:03:46,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 521 transitions. [2022-07-13 22:03:46,160 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9577205882352942 [2022-07-13 22:03:46,161 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 521 transitions. [2022-07-13 22:03:46,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 521 transitions. [2022-07-13 22:03:46,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:46,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 521 transitions. [2022-07-13 22:03:46,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 260.5) internal successors, (521), 2 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,180 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,182 INFO L186 Difference]: Start difference. First operand has 245 places, 261 transitions, 534 flow. Second operand 2 states and 521 transitions. [2022-07-13 22:03:46,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 244 transitions, 508 flow [2022-07-13 22:03:46,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 244 transitions, 500 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:03:46,192 INFO L242 Difference]: Finished difference. Result has 242 places, 237 transitions, 478 flow [2022-07-13 22:03:46,194 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=478, PETRI_PLACES=242, PETRI_TRANSITIONS=237} [2022-07-13 22:03:46,197 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, -3 predicate places. [2022-07-13 22:03:46,198 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 237 transitions, 478 flow [2022-07-13 22:03:46,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 252.5) internal successors, (505), 2 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,199 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:46,200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:46,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:03:46,200 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:46,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:46,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1774321134, now seen corresponding path program 1 times [2022-07-13 22:03:46,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:46,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353936413] [2022-07-13 22:03:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:46,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:46,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:03:46,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:46,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353936413] [2022-07-13 22:03:46,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353936413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:46,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:46,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:03:46,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16650157] [2022-07-13 22:03:46,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:46,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:03:46,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:46,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:03:46,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:03:46,419 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 272 [2022-07-13 22:03:46,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 237 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:46,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 272 [2022-07-13 22:03:46,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:46,587 INFO L129 PetriNetUnfolder]: 32/666 cut-off events. [2022-07-13 22:03:46,588 INFO L130 PetriNetUnfolder]: For 6/21 co-relation queries the response was YES. [2022-07-13 22:03:46,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 666 events. 32/666 cut-off events. For 6/21 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2709 event pairs, 9 based on Foata normal form. 2/625 useless extension candidates. Maximal degree in co-relation 750. Up to 34 conditions per place. [2022-07-13 22:03:46,594 INFO L132 encePairwiseOnDemand]: 267/272 looper letters, 26 selfloop transitions, 4 changer transitions 0/252 dead transitions. [2022-07-13 22:03:46,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 252 transitions, 575 flow [2022-07-13 22:03:46,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:03:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:03:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1226 transitions. [2022-07-13 22:03:46,598 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9014705882352941 [2022-07-13 22:03:46,598 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1226 transitions. [2022-07-13 22:03:46,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1226 transitions. [2022-07-13 22:03:46,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:46,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1226 transitions. [2022-07-13 22:03:46,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 245.2) internal successors, (1226), 5 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,609 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,610 INFO L186 Difference]: Start difference. First operand has 242 places, 237 transitions, 478 flow. Second operand 5 states and 1226 transitions. [2022-07-13 22:03:46,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 252 transitions, 575 flow [2022-07-13 22:03:46,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 252 transitions, 575 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:03:46,620 INFO L242 Difference]: Finished difference. Result has 242 places, 240 transitions, 507 flow [2022-07-13 22:03:46,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=507, PETRI_PLACES=242, PETRI_TRANSITIONS=240} [2022-07-13 22:03:46,622 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, -3 predicate places. [2022-07-13 22:03:46,622 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 240 transitions, 507 flow [2022-07-13 22:03:46,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,623 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:46,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:46,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:03:46,624 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:46,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:46,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2002820622, now seen corresponding path program 1 times [2022-07-13 22:03:46,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:46,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183635629] [2022-07-13 22:03:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:46,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:46,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:03:46,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:46,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183635629] [2022-07-13 22:03:46,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183635629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:46,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:46,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:03:46,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764191495] [2022-07-13 22:03:46,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:46,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:03:46,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:46,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:03:46,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:03:46,756 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 272 [2022-07-13 22:03:46,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 240 transitions, 507 flow. Second operand has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:46,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 272 [2022-07-13 22:03:46,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:46,885 INFO L129 PetriNetUnfolder]: 5/342 cut-off events. [2022-07-13 22:03:46,886 INFO L130 PetriNetUnfolder]: For 8/11 co-relation queries the response was YES. [2022-07-13 22:03:46,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 342 events. 5/342 cut-off events. For 8/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 584 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 396. Up to 29 conditions per place. [2022-07-13 22:03:46,889 INFO L132 encePairwiseOnDemand]: 262/272 looper letters, 28 selfloop transitions, 8 changer transitions 0/248 dead transitions. [2022-07-13 22:03:46,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 248 transitions, 595 flow [2022-07-13 22:03:46,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:03:46,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:03:46,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1168 transitions. [2022-07-13 22:03:46,894 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8588235294117647 [2022-07-13 22:03:46,894 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1168 transitions. [2022-07-13 22:03:46,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1168 transitions. [2022-07-13 22:03:46,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:46,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1168 transitions. [2022-07-13 22:03:46,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.6) internal successors, (1168), 5 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,902 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,902 INFO L186 Difference]: Start difference. First operand has 242 places, 240 transitions, 507 flow. Second operand 5 states and 1168 transitions. [2022-07-13 22:03:46,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 248 transitions, 595 flow [2022-07-13 22:03:46,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 248 transitions, 595 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:03:46,908 INFO L242 Difference]: Finished difference. Result has 247 places, 242 transitions, 539 flow [2022-07-13 22:03:46,908 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=539, PETRI_PLACES=247, PETRI_TRANSITIONS=242} [2022-07-13 22:03:46,910 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 2 predicate places. [2022-07-13 22:03:46,910 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 242 transitions, 539 flow [2022-07-13 22:03:46,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,911 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:46,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:46,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:03:46,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:46,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:46,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1043059878, now seen corresponding path program 1 times [2022-07-13 22:03:46,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:46,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132734021] [2022-07-13 22:03:46,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:46,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:47,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:03:47,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:47,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132734021] [2022-07-13 22:03:47,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132734021] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:47,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688976210] [2022-07-13 22:03:47,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:47,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:47,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:47,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:03:47,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:03:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:47,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:03:47,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:47,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:03:47,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:03:47,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:03:47,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688976210] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:03:47,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:03:47,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-07-13 22:03:47,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921314000] [2022-07-13 22:03:47,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:03:47,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 22:03:47,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:47,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 22:03:47,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:03:47,499 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 272 [2022-07-13 22:03:47,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 242 transitions, 539 flow. Second operand has 15 states, 15 states have (on average 227.33333333333334) internal successors, (3410), 15 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:47,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:47,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 272 [2022-07-13 22:03:47,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:47,759 INFO L129 PetriNetUnfolder]: 5/360 cut-off events. [2022-07-13 22:03:47,759 INFO L130 PetriNetUnfolder]: For 16/19 co-relation queries the response was YES. [2022-07-13 22:03:47,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 360 events. 5/360 cut-off events. For 16/19 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 566 event pairs, 0 based on Foata normal form. 4/354 useless extension candidates. Maximal degree in co-relation 446. Up to 23 conditions per place. [2022-07-13 22:03:47,762 INFO L132 encePairwiseOnDemand]: 256/272 looper letters, 30 selfloop transitions, 22 changer transitions 0/262 dead transitions. [2022-07-13 22:03:47,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 262 transitions, 687 flow [2022-07-13 22:03:47,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:03:47,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 22:03:47,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2520 transitions. [2022-07-13 22:03:47,768 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8422459893048129 [2022-07-13 22:03:47,769 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2520 transitions. [2022-07-13 22:03:47,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2520 transitions. [2022-07-13 22:03:47,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:47,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2520 transitions. [2022-07-13 22:03:47,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 229.0909090909091) internal successors, (2520), 11 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:47,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:47,782 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:47,783 INFO L186 Difference]: Start difference. First operand has 247 places, 242 transitions, 539 flow. Second operand 11 states and 2520 transitions. [2022-07-13 22:03:47,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 262 transitions, 687 flow [2022-07-13 22:03:47,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 262 transitions, 675 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-13 22:03:47,789 INFO L242 Difference]: Finished difference. Result has 257 places, 254 transitions, 638 flow [2022-07-13 22:03:47,789 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=638, PETRI_PLACES=257, PETRI_TRANSITIONS=254} [2022-07-13 22:03:47,790 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 12 predicate places. [2022-07-13 22:03:47,790 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 254 transitions, 638 flow [2022-07-13 22:03:47,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 227.33333333333334) internal successors, (3410), 15 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:47,792 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:47,792 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:47,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:03:48,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:48,004 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:48,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:48,004 INFO L85 PathProgramCache]: Analyzing trace with hash 785132506, now seen corresponding path program 2 times [2022-07-13 22:03:48,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:48,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838893743] [2022-07-13 22:03:48,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:48,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:48,153 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:03:48,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:48,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838893743] [2022-07-13 22:03:48,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838893743] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:48,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102639070] [2022-07-13 22:03:48,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:03:48,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:48,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:48,156 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:03:48,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:03:48,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 22:03:48,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:03:48,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:03:48,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-13 22:03:48,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:03:48,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102639070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:48,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:03:48,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-13 22:03:48,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241931582] [2022-07-13 22:03:48,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:48,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:48,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:48,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:48,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:03:48,452 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 272 [2022-07-13 22:03:48,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 254 transitions, 638 flow. Second operand has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:48,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:48,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 272 [2022-07-13 22:03:48,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:49,016 INFO L129 PetriNetUnfolder]: 276/1837 cut-off events. [2022-07-13 22:03:49,016 INFO L130 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2022-07-13 22:03:49,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2571 conditions, 1837 events. 276/1837 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 12785 event pairs, 5 based on Foata normal form. 0/1677 useless extension candidates. Maximal degree in co-relation 2560. Up to 212 conditions per place. [2022-07-13 22:03:49,027 INFO L132 encePairwiseOnDemand]: 260/272 looper letters, 63 selfloop transitions, 33 changer transitions 0/323 dead transitions. [2022-07-13 22:03:49,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 323 transitions, 979 flow [2022-07-13 22:03:49,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 22:03:49,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 22:03:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3050 transitions. [2022-07-13 22:03:49,036 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8625565610859729 [2022-07-13 22:03:49,036 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3050 transitions. [2022-07-13 22:03:49,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3050 transitions. [2022-07-13 22:03:49,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:49,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3050 transitions. [2022-07-13 22:03:49,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 234.6153846153846) internal successors, (3050), 13 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:49,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:49,050 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:49,051 INFO L186 Difference]: Start difference. First operand has 257 places, 254 transitions, 638 flow. Second operand 13 states and 3050 transitions. [2022-07-13 22:03:49,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 323 transitions, 979 flow [2022-07-13 22:03:49,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 323 transitions, 962 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-07-13 22:03:49,062 INFO L242 Difference]: Finished difference. Result has 272 places, 285 transitions, 817 flow [2022-07-13 22:03:49,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=817, PETRI_PLACES=272, PETRI_TRANSITIONS=285} [2022-07-13 22:03:49,064 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 27 predicate places. [2022-07-13 22:03:49,064 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 285 transitions, 817 flow [2022-07-13 22:03:49,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:49,065 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:49,066 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:49,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:03:49,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:49,292 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:49,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:49,292 INFO L85 PathProgramCache]: Analyzing trace with hash 348903810, now seen corresponding path program 3 times [2022-07-13 22:03:49,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:49,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438835530] [2022-07-13 22:03:49,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:49,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:03:49,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:49,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438835530] [2022-07-13 22:03:49,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438835530] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:49,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462681485] [2022-07-13 22:03:49,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:03:49,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:49,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:49,419 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:03:49,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:03:49,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-13 22:03:49,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:03:49,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:03:49,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:49,784 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-13 22:03:49,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:03:49,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462681485] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:49,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:03:49,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-13 22:03:49,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546174024] [2022-07-13 22:03:49,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:49,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:49,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:49,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:49,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:03:49,788 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 272 [2022-07-13 22:03:49,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 285 transitions, 817 flow. Second operand has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:49,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:49,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 272 [2022-07-13 22:03:49,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:50,380 INFO L129 PetriNetUnfolder]: 349/2075 cut-off events. [2022-07-13 22:03:50,380 INFO L130 PetriNetUnfolder]: For 831/894 co-relation queries the response was YES. [2022-07-13 22:03:50,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3498 conditions, 2075 events. 349/2075 cut-off events. For 831/894 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 14865 event pairs, 90 based on Foata normal form. 24/2018 useless extension candidates. Maximal degree in co-relation 3481. Up to 393 conditions per place. [2022-07-13 22:03:50,393 INFO L132 encePairwiseOnDemand]: 259/272 looper letters, 71 selfloop transitions, 22 changer transitions 24/344 dead transitions. [2022-07-13 22:03:50,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 344 transitions, 1334 flow [2022-07-13 22:03:50,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:03:50,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-13 22:03:50,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2817 transitions. [2022-07-13 22:03:50,400 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8630514705882353 [2022-07-13 22:03:50,400 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2817 transitions. [2022-07-13 22:03:50,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2817 transitions. [2022-07-13 22:03:50,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:50,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2817 transitions. [2022-07-13 22:03:50,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 234.75) internal successors, (2817), 12 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:50,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 272.0) internal successors, (3536), 13 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:50,413 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 272.0) internal successors, (3536), 13 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:50,413 INFO L186 Difference]: Start difference. First operand has 272 places, 285 transitions, 817 flow. Second operand 12 states and 2817 transitions. [2022-07-13 22:03:50,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 344 transitions, 1334 flow [2022-07-13 22:03:50,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 344 transitions, 1334 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:03:50,422 INFO L242 Difference]: Finished difference. Result has 289 places, 294 transitions, 981 flow [2022-07-13 22:03:50,423 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=981, PETRI_PLACES=289, PETRI_TRANSITIONS=294} [2022-07-13 22:03:50,423 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 44 predicate places. [2022-07-13 22:03:50,423 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 294 transitions, 981 flow [2022-07-13 22:03:50,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:50,424 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:50,425 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:50,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:03:50,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:50,640 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:50,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:50,640 INFO L85 PathProgramCache]: Analyzing trace with hash -178877372, now seen corresponding path program 1 times [2022-07-13 22:03:50,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:50,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799635805] [2022-07-13 22:03:50,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:50,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-13 22:03:50,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:50,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799635805] [2022-07-13 22:03:50,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799635805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:50,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:50,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:03:50,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765672792] [2022-07-13 22:03:50,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:50,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:03:50,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:50,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:03:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:03:50,694 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 272 [2022-07-13 22:03:50,696 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 294 transitions, 981 flow. Second operand has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:50,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:50,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 272 [2022-07-13 22:03:50,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:51,020 INFO L129 PetriNetUnfolder]: 135/1919 cut-off events. [2022-07-13 22:03:51,021 INFO L130 PetriNetUnfolder]: For 947/1070 co-relation queries the response was YES. [2022-07-13 22:03:51,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2761 conditions, 1919 events. 135/1919 cut-off events. For 947/1070 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 12742 event pairs, 25 based on Foata normal form. 69/1921 useless extension candidates. Maximal degree in co-relation 2737. Up to 122 conditions per place. [2022-07-13 22:03:51,032 INFO L132 encePairwiseOnDemand]: 267/272 looper letters, 61 selfloop transitions, 4 changer transitions 0/314 dead transitions. [2022-07-13 22:03:51,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 314 transitions, 1210 flow [2022-07-13 22:03:51,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:03:51,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:03:51,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1224 transitions. [2022-07-13 22:03:51,036 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-07-13 22:03:51,036 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1224 transitions. [2022-07-13 22:03:51,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1224 transitions. [2022-07-13 22:03:51,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:51,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1224 transitions. [2022-07-13 22:03:51,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.8) internal successors, (1224), 5 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:51,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:51,042 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:51,042 INFO L186 Difference]: Start difference. First operand has 289 places, 294 transitions, 981 flow. Second operand 5 states and 1224 transitions. [2022-07-13 22:03:51,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 314 transitions, 1210 flow [2022-07-13 22:03:51,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 314 transitions, 1169 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-07-13 22:03:51,054 INFO L242 Difference]: Finished difference. Result has 285 places, 294 transitions, 983 flow [2022-07-13 22:03:51,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=983, PETRI_PLACES=285, PETRI_TRANSITIONS=294} [2022-07-13 22:03:51,056 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 40 predicate places. [2022-07-13 22:03:51,056 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 294 transitions, 983 flow [2022-07-13 22:03:51,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:51,068 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:51,069 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:51,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:03:51,069 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:51,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:51,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1817286902, now seen corresponding path program 4 times [2022-07-13 22:03:51,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:51,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368747426] [2022-07-13 22:03:51,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:51,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:51,206 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:03:51,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:51,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368747426] [2022-07-13 22:03:51,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368747426] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:51,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472320159] [2022-07-13 22:03:51,207 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 22:03:51,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:51,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:51,209 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:03:51,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:03:51,323 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 22:03:51,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:03:51,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 22:03:51,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:51,476 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:03:51,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:03:51,574 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:03:51,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472320159] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:03:51,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:03:51,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-07-13 22:03:51,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377489147] [2022-07-13 22:03:51,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:03:51,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 22:03:51,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:51,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 22:03:51,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-07-13 22:03:51,583 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 272 [2022-07-13 22:03:51,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 294 transitions, 983 flow. Second operand has 22 states, 22 states have (on average 227.1818181818182) internal successors, (4998), 22 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:51,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:51,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 272 [2022-07-13 22:03:51,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:52,148 INFO L129 PetriNetUnfolder]: 61/1584 cut-off events. [2022-07-13 22:03:52,149 INFO L130 PetriNetUnfolder]: For 397/430 co-relation queries the response was YES. [2022-07-13 22:03:52,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 1584 events. 61/1584 cut-off events. For 397/430 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 9188 event pairs, 4 based on Foata normal form. 19/1577 useless extension candidates. Maximal degree in co-relation 2159. Up to 52 conditions per place. [2022-07-13 22:03:52,160 INFO L132 encePairwiseOnDemand]: 256/272 looper letters, 38 selfloop transitions, 34 changer transitions 0/322 dead transitions. [2022-07-13 22:03:52,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 322 transitions, 1239 flow [2022-07-13 22:03:52,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:03:52,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:03:52,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3884 transitions. [2022-07-13 22:03:52,169 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8399653979238755 [2022-07-13 22:03:52,169 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3884 transitions. [2022-07-13 22:03:52,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3884 transitions. [2022-07-13 22:03:52,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:52,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3884 transitions. [2022-07-13 22:03:52,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 228.47058823529412) internal successors, (3884), 17 states have internal predecessors, (3884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:52,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 272.0) internal successors, (4896), 18 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:52,188 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 272.0) internal successors, (4896), 18 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:52,189 INFO L186 Difference]: Start difference. First operand has 285 places, 294 transitions, 983 flow. Second operand 17 states and 3884 transitions. [2022-07-13 22:03:52,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 322 transitions, 1239 flow [2022-07-13 22:03:52,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 322 transitions, 1239 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:03:52,198 INFO L242 Difference]: Finished difference. Result has 304 places, 308 transitions, 1158 flow [2022-07-13 22:03:52,199 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1158, PETRI_PLACES=304, PETRI_TRANSITIONS=308} [2022-07-13 22:03:52,199 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 59 predicate places. [2022-07-13 22:03:52,200 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 308 transitions, 1158 flow [2022-07-13 22:03:52,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 227.1818181818182) internal successors, (4998), 22 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:52,201 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:52,201 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:52,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:03:52,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:52,416 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:52,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:52,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1163814902, now seen corresponding path program 5 times [2022-07-13 22:03:52,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:52,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742413959] [2022-07-13 22:03:52,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:52,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:52,568 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:52,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:52,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742413959] [2022-07-13 22:03:52,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742413959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:52,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:52,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:03:52,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729884106] [2022-07-13 22:03:52,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:52,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:03:52,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:52,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:03:52,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:03:52,573 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:03:52,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 308 transitions, 1158 flow. Second operand has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:52,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:52,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:03:52,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:53,688 INFO L129 PetriNetUnfolder]: 818/5846 cut-off events. [2022-07-13 22:03:53,688 INFO L130 PetriNetUnfolder]: For 1621/1668 co-relation queries the response was YES. [2022-07-13 22:03:53,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9238 conditions, 5846 events. 818/5846 cut-off events. For 1621/1668 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 52785 event pairs, 17 based on Foata normal form. 59/5717 useless extension candidates. Maximal degree in co-relation 9210. Up to 704 conditions per place. [2022-07-13 22:03:53,730 INFO L132 encePairwiseOnDemand]: 261/272 looper letters, 89 selfloop transitions, 23 changer transitions 4/389 dead transitions. [2022-07-13 22:03:53,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 389 transitions, 1634 flow [2022-07-13 22:03:53,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:03:53,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:03:53,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2325 transitions. [2022-07-13 22:03:53,736 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8547794117647058 [2022-07-13 22:03:53,736 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2325 transitions. [2022-07-13 22:03:53,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2325 transitions. [2022-07-13 22:03:53,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:53,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2325 transitions. [2022-07-13 22:03:53,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 232.5) internal successors, (2325), 10 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:53,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:53,747 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:53,747 INFO L186 Difference]: Start difference. First operand has 304 places, 308 transitions, 1158 flow. Second operand 10 states and 2325 transitions. [2022-07-13 22:03:53,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 389 transitions, 1634 flow [2022-07-13 22:03:53,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 389 transitions, 1589 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-07-13 22:03:53,772 INFO L242 Difference]: Finished difference. Result has 308 places, 323 transitions, 1223 flow [2022-07-13 22:03:53,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1223, PETRI_PLACES=308, PETRI_TRANSITIONS=323} [2022-07-13 22:03:53,773 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 63 predicate places. [2022-07-13 22:03:53,774 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 323 transitions, 1223 flow [2022-07-13 22:03:53,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:53,774 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:53,775 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:53,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:03:53,776 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1112339455, now seen corresponding path program 1 times [2022-07-13 22:03:53,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:53,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500511592] [2022-07-13 22:03:53,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:53,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:53,936 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-13 22:03:53,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:53,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500511592] [2022-07-13 22:03:53,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500511592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:53,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:53,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:03:53,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338599296] [2022-07-13 22:03:53,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:53,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:03:53,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:53,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:03:53,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:03:53,941 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:03:53,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 323 transitions, 1223 flow. Second operand has 8 states, 8 states have (on average 224.75) internal successors, (1798), 8 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:53,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:53,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:03:53,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:54,954 INFO L129 PetriNetUnfolder]: 791/4837 cut-off events. [2022-07-13 22:03:54,955 INFO L130 PetriNetUnfolder]: For 2236/2328 co-relation queries the response was YES. [2022-07-13 22:03:54,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8393 conditions, 4837 events. 791/4837 cut-off events. For 2236/2328 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 40634 event pairs, 269 based on Foata normal form. 32/4665 useless extension candidates. Maximal degree in co-relation 8362. Up to 730 conditions per place. [2022-07-13 22:03:54,986 INFO L132 encePairwiseOnDemand]: 263/272 looper letters, 93 selfloop transitions, 18 changer transitions 28/412 dead transitions. [2022-07-13 22:03:54,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 412 transitions, 1807 flow [2022-07-13 22:03:54,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:03:54,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 22:03:54,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2552 transitions. [2022-07-13 22:03:54,993 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8529411764705882 [2022-07-13 22:03:54,993 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2552 transitions. [2022-07-13 22:03:54,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2552 transitions. [2022-07-13 22:03:54,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:54,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2552 transitions. [2022-07-13 22:03:54,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 232.0) internal successors, (2552), 11 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:55,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:55,005 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:55,005 INFO L186 Difference]: Start difference. First operand has 308 places, 323 transitions, 1223 flow. Second operand 11 states and 2552 transitions. [2022-07-13 22:03:55,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 412 transitions, 1807 flow [2022-07-13 22:03:55,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 412 transitions, 1794 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:03:55,024 INFO L242 Difference]: Finished difference. Result has 321 places, 333 transitions, 1327 flow [2022-07-13 22:03:55,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1327, PETRI_PLACES=321, PETRI_TRANSITIONS=333} [2022-07-13 22:03:55,026 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 76 predicate places. [2022-07-13 22:03:55,026 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 333 transitions, 1327 flow [2022-07-13 22:03:55,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 224.75) internal successors, (1798), 8 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:55,027 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:55,027 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:55,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:03:55,027 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:55,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:55,028 INFO L85 PathProgramCache]: Analyzing trace with hash 169689273, now seen corresponding path program 2 times [2022-07-13 22:03:55,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:55,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765362469] [2022-07-13 22:03:55,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:55,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:55,207 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:55,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:55,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765362469] [2022-07-13 22:03:55,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765362469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:55,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:55,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:03:55,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308490300] [2022-07-13 22:03:55,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:55,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:03:55,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:55,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:03:55,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:03:55,214 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:03:55,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 333 transitions, 1327 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:55,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:55,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:03:55,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:56,385 INFO L129 PetriNetUnfolder]: 960/5872 cut-off events. [2022-07-13 22:03:56,385 INFO L130 PetriNetUnfolder]: For 5408/5584 co-relation queries the response was YES. [2022-07-13 22:03:56,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11153 conditions, 5872 events. 960/5872 cut-off events. For 5408/5584 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 52771 event pairs, 261 based on Foata normal form. 79/5861 useless extension candidates. Maximal degree in co-relation 11116. Up to 645 conditions per place. [2022-07-13 22:03:56,432 INFO L132 encePairwiseOnDemand]: 256/272 looper letters, 108 selfloop transitions, 63 changer transitions 16/460 dead transitions. [2022-07-13 22:03:56,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 460 transitions, 2348 flow [2022-07-13 22:03:56,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:03:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 22:03:56,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3257 transitions. [2022-07-13 22:03:56,441 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8553046218487395 [2022-07-13 22:03:56,442 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3257 transitions. [2022-07-13 22:03:56,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3257 transitions. [2022-07-13 22:03:56,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:56,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3257 transitions. [2022-07-13 22:03:56,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 232.64285714285714) internal successors, (3257), 14 states have internal predecessors, (3257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:56,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 272.0) internal successors, (4080), 15 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:56,457 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 272.0) internal successors, (4080), 15 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:56,458 INFO L186 Difference]: Start difference. First operand has 321 places, 333 transitions, 1327 flow. Second operand 14 states and 3257 transitions. [2022-07-13 22:03:56,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 460 transitions, 2348 flow [2022-07-13 22:03:56,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 460 transitions, 2342 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-13 22:03:56,484 INFO L242 Difference]: Finished difference. Result has 340 places, 371 transitions, 1831 flow [2022-07-13 22:03:56,485 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1831, PETRI_PLACES=340, PETRI_TRANSITIONS=371} [2022-07-13 22:03:56,485 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 95 predicate places. [2022-07-13 22:03:56,485 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 371 transitions, 1831 flow [2022-07-13 22:03:56,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:56,486 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:56,486 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:56,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:03:56,487 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:56,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:56,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1056484631, now seen corresponding path program 3 times [2022-07-13 22:03:56,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:56,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939479577] [2022-07-13 22:03:56,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:56,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:56,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:56,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939479577] [2022-07-13 22:03:56,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939479577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:56,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:56,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:03:56,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265424385] [2022-07-13 22:03:56,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:56,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:03:56,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:56,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:03:56,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:03:56,649 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:03:56,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 371 transitions, 1831 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:56,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:56,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:03:56,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:57,990 INFO L129 PetriNetUnfolder]: 952/6465 cut-off events. [2022-07-13 22:03:57,990 INFO L130 PetriNetUnfolder]: For 10395/10875 co-relation queries the response was YES. [2022-07-13 22:03:58,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13289 conditions, 6465 events. 952/6465 cut-off events. For 10395/10875 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 60156 event pairs, 337 based on Foata normal form. 98/6476 useless extension candidates. Maximal degree in co-relation 13243. Up to 787 conditions per place. [2022-07-13 22:03:58,036 INFO L132 encePairwiseOnDemand]: 260/272 looper letters, 142 selfloop transitions, 48 changer transitions 11/474 dead transitions. [2022-07-13 22:03:58,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 474 transitions, 2790 flow [2022-07-13 22:03:58,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:03:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:03:58,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2328 transitions. [2022-07-13 22:03:58,040 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8558823529411764 [2022-07-13 22:03:58,041 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2328 transitions. [2022-07-13 22:03:58,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2328 transitions. [2022-07-13 22:03:58,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:58,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2328 transitions. [2022-07-13 22:03:58,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 232.8) internal successors, (2328), 10 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:58,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:58,051 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:58,051 INFO L186 Difference]: Start difference. First operand has 340 places, 371 transitions, 1831 flow. Second operand 10 states and 2328 transitions. [2022-07-13 22:03:58,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 474 transitions, 2790 flow [2022-07-13 22:03:58,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 474 transitions, 2763 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-13 22:03:58,114 INFO L242 Difference]: Finished difference. Result has 352 places, 384 transitions, 2099 flow [2022-07-13 22:03:58,115 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2099, PETRI_PLACES=352, PETRI_TRANSITIONS=384} [2022-07-13 22:03:58,116 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 107 predicate places. [2022-07-13 22:03:58,116 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 384 transitions, 2099 flow [2022-07-13 22:03:58,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:58,117 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:58,117 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:58,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 22:03:58,118 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:58,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:58,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1586049013, now seen corresponding path program 4 times [2022-07-13 22:03:58,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:58,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192928903] [2022-07-13 22:03:58,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:58,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-13 22:03:58,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:58,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192928903] [2022-07-13 22:03:58,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192928903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:58,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:58,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:03:58,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467654030] [2022-07-13 22:03:58,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:58,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:03:58,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:58,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:03:58,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:03:58,289 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:03:58,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 384 transitions, 2099 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:58,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:58,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:03:58,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:59,636 INFO L129 PetriNetUnfolder]: 1121/7501 cut-off events. [2022-07-13 22:03:59,636 INFO L130 PetriNetUnfolder]: For 19206/19737 co-relation queries the response was YES. [2022-07-13 22:03:59,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16732 conditions, 7501 events. 1121/7501 cut-off events. For 19206/19737 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 74022 event pairs, 360 based on Foata normal form. 121/7522 useless extension candidates. Maximal degree in co-relation 16680. Up to 946 conditions per place. [2022-07-13 22:03:59,825 INFO L132 encePairwiseOnDemand]: 257/272 looper letters, 115 selfloop transitions, 78 changer transitions 13/479 dead transitions. [2022-07-13 22:03:59,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 479 transitions, 3260 flow [2022-07-13 22:03:59,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:03:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:03:59,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2336 transitions. [2022-07-13 22:03:59,829 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8588235294117647 [2022-07-13 22:03:59,829 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2336 transitions. [2022-07-13 22:03:59,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2336 transitions. [2022-07-13 22:03:59,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:59,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2336 transitions. [2022-07-13 22:03:59,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 233.6) internal successors, (2336), 10 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:59,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:59,836 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:59,836 INFO L186 Difference]: Start difference. First operand has 352 places, 384 transitions, 2099 flow. Second operand 10 states and 2336 transitions. [2022-07-13 22:03:59,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 479 transitions, 3260 flow [2022-07-13 22:03:59,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 479 transitions, 3232 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-13 22:03:59,920 INFO L242 Difference]: Finished difference. Result has 367 places, 403 transitions, 2622 flow [2022-07-13 22:03:59,921 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2622, PETRI_PLACES=367, PETRI_TRANSITIONS=403} [2022-07-13 22:03:59,921 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 122 predicate places. [2022-07-13 22:03:59,921 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 403 transitions, 2622 flow [2022-07-13 22:03:59,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:59,922 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:59,922 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:59,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 22:03:59,923 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:59,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:59,924 INFO L85 PathProgramCache]: Analyzing trace with hash -355461643, now seen corresponding path program 5 times [2022-07-13 22:03:59,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:59,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984058533] [2022-07-13 22:03:59,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:59,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:00,056 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:04:00,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:00,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984058533] [2022-07-13 22:04:00,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984058533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:00,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:00,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:00,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32142764] [2022-07-13 22:04:00,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:00,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:00,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:00,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:00,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:00,060 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:04:00,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 403 transitions, 2622 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:00,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:00,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:04:00,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:01,406 INFO L129 PetriNetUnfolder]: 1205/7916 cut-off events. [2022-07-13 22:04:01,406 INFO L130 PetriNetUnfolder]: For 29261/30189 co-relation queries the response was YES. [2022-07-13 22:04:01,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18800 conditions, 7916 events. 1205/7916 cut-off events. For 29261/30189 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 78466 event pairs, 454 based on Foata normal form. 139/7931 useless extension candidates. Maximal degree in co-relation 18741. Up to 836 conditions per place. [2022-07-13 22:04:01,473 INFO L132 encePairwiseOnDemand]: 260/272 looper letters, 148 selfloop transitions, 73 changer transitions 12/506 dead transitions. [2022-07-13 22:04:01,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 506 transitions, 3838 flow [2022-07-13 22:04:01,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:04:01,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:04:01,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2345 transitions. [2022-07-13 22:04:01,476 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8621323529411765 [2022-07-13 22:04:01,476 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2345 transitions. [2022-07-13 22:04:01,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2345 transitions. [2022-07-13 22:04:01,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:01,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2345 transitions. [2022-07-13 22:04:01,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 234.5) internal successors, (2345), 10 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:01,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:01,483 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:01,484 INFO L186 Difference]: Start difference. First operand has 367 places, 403 transitions, 2622 flow. Second operand 10 states and 2345 transitions. [2022-07-13 22:04:01,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 506 transitions, 3838 flow [2022-07-13 22:04:01,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 506 transitions, 3804 flow, removed 10 selfloop flow, removed 1 redundant places. [2022-07-13 22:04:01,591 INFO L242 Difference]: Finished difference. Result has 381 places, 413 transitions, 3040 flow [2022-07-13 22:04:01,592 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3040, PETRI_PLACES=381, PETRI_TRANSITIONS=413} [2022-07-13 22:04:01,592 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 136 predicate places. [2022-07-13 22:04:01,592 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 413 transitions, 3040 flow [2022-07-13 22:04:01,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:01,593 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:01,593 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:01,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 22:04:01,593 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:01,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:01,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1751499251, now seen corresponding path program 6 times [2022-07-13 22:04:01,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:01,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949789752] [2022-07-13 22:04:01,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:01,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-13 22:04:01,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:01,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949789752] [2022-07-13 22:04:01,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949789752] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:01,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:01,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:01,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534690544] [2022-07-13 22:04:01,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:01,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:01,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:01,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:01,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:01,726 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:04:01,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 413 transitions, 3040 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:01,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:01,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:04:01,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:03,888 INFO L129 PetriNetUnfolder]: 1541/10742 cut-off events. [2022-07-13 22:04:03,888 INFO L130 PetriNetUnfolder]: For 41820/42653 co-relation queries the response was YES. [2022-07-13 22:04:03,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25121 conditions, 10742 events. 1541/10742 cut-off events. For 41820/42653 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 116995 event pairs, 350 based on Foata normal form. 199/10792 useless extension candidates. Maximal degree in co-relation 25056. Up to 1091 conditions per place. [2022-07-13 22:04:04,030 INFO L132 encePairwiseOnDemand]: 259/272 looper letters, 139 selfloop transitions, 89 changer transitions 8/509 dead transitions. [2022-07-13 22:04:04,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 509 transitions, 4240 flow [2022-07-13 22:04:04,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:04:04,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 22:04:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2551 transitions. [2022-07-13 22:04:04,034 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8526069518716578 [2022-07-13 22:04:04,035 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2551 transitions. [2022-07-13 22:04:04,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2551 transitions. [2022-07-13 22:04:04,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:04,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2551 transitions. [2022-07-13 22:04:04,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 231.9090909090909) internal successors, (2551), 11 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:04,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:04,043 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:04,043 INFO L186 Difference]: Start difference. First operand has 381 places, 413 transitions, 3040 flow. Second operand 11 states and 2551 transitions. [2022-07-13 22:04:04,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 509 transitions, 4240 flow [2022-07-13 22:04:04,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 509 transitions, 4090 flow, removed 25 selfloop flow, removed 6 redundant places. [2022-07-13 22:04:04,220 INFO L242 Difference]: Finished difference. Result has 389 places, 436 transitions, 3575 flow [2022-07-13 22:04:04,221 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3575, PETRI_PLACES=389, PETRI_TRANSITIONS=436} [2022-07-13 22:04:04,221 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 144 predicate places. [2022-07-13 22:04:04,221 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 436 transitions, 3575 flow [2022-07-13 22:04:04,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:04,222 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:04,222 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:04,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:04:04,223 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:04,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:04,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1014004619, now seen corresponding path program 7 times [2022-07-13 22:04:04,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:04,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618429422] [2022-07-13 22:04:04,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:04,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:04,370 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-13 22:04:04,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:04,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618429422] [2022-07-13 22:04:04,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618429422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:04,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:04,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:04,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516581158] [2022-07-13 22:04:04,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:04,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:04,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:04,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:04,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:04,375 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:04:04,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 436 transitions, 3575 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:04,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:04,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:04:04,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:06,928 INFO L129 PetriNetUnfolder]: 1784/12093 cut-off events. [2022-07-13 22:04:06,928 INFO L130 PetriNetUnfolder]: For 53317/54485 co-relation queries the response was YES. [2022-07-13 22:04:07,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29036 conditions, 12093 events. 1784/12093 cut-off events. For 53317/54485 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 134440 event pairs, 294 based on Foata normal form. 386/12323 useless extension candidates. Maximal degree in co-relation 28970. Up to 1087 conditions per place. [2022-07-13 22:04:07,040 INFO L132 encePairwiseOnDemand]: 252/272 looper letters, 134 selfloop transitions, 154 changer transitions 26/587 dead transitions. [2022-07-13 22:04:07,040 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 587 transitions, 5556 flow [2022-07-13 22:04:07,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:04:07,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:04:07,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3717 transitions. [2022-07-13 22:04:07,045 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8540900735294118 [2022-07-13 22:04:07,045 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3717 transitions. [2022-07-13 22:04:07,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3717 transitions. [2022-07-13 22:04:07,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:07,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3717 transitions. [2022-07-13 22:04:07,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 232.3125) internal successors, (3717), 16 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:07,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 272.0) internal successors, (4624), 17 states have internal predecessors, (4624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:07,056 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 272.0) internal successors, (4624), 17 states have internal predecessors, (4624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:07,057 INFO L186 Difference]: Start difference. First operand has 389 places, 436 transitions, 3575 flow. Second operand 16 states and 3717 transitions. [2022-07-13 22:04:07,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 587 transitions, 5556 flow [2022-07-13 22:04:07,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 587 transitions, 5470 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-13 22:04:07,243 INFO L242 Difference]: Finished difference. Result has 409 places, 498 transitions, 4756 flow [2022-07-13 22:04:07,244 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=3508, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4756, PETRI_PLACES=409, PETRI_TRANSITIONS=498} [2022-07-13 22:04:07,244 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 164 predicate places. [2022-07-13 22:04:07,244 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 498 transitions, 4756 flow [2022-07-13 22:04:07,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:07,245 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:07,245 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:07,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 22:04:07,246 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:07,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:07,246 INFO L85 PathProgramCache]: Analyzing trace with hash 231247173, now seen corresponding path program 8 times [2022-07-13 22:04:07,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:07,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515784791] [2022-07-13 22:04:07,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:07,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:07,368 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-13 22:04:07,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:07,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515784791] [2022-07-13 22:04:07,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515784791] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:07,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:07,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:07,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706525686] [2022-07-13 22:04:07,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:07,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:07,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:07,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:07,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:07,372 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:04:07,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 498 transitions, 4756 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:07,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:07,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:04:07,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:09,579 INFO L129 PetriNetUnfolder]: 1772/11767 cut-off events. [2022-07-13 22:04:09,579 INFO L130 PetriNetUnfolder]: For 65687/67199 co-relation queries the response was YES. [2022-07-13 22:04:09,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30931 conditions, 11767 events. 1772/11767 cut-off events. For 65687/67199 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 128945 event pairs, 347 based on Foata normal form. 380/11984 useless extension candidates. Maximal degree in co-relation 30855. Up to 1150 conditions per place. [2022-07-13 22:04:09,726 INFO L132 encePairwiseOnDemand]: 258/272 looper letters, 156 selfloop transitions, 124 changer transitions 12/565 dead transitions. [2022-07-13 22:04:09,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 565 transitions, 5866 flow [2022-07-13 22:04:09,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:04:09,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 22:04:09,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2560 transitions. [2022-07-13 22:04:09,730 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8556149732620321 [2022-07-13 22:04:09,730 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2560 transitions. [2022-07-13 22:04:09,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2560 transitions. [2022-07-13 22:04:09,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:09,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2560 transitions. [2022-07-13 22:04:09,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 232.72727272727272) internal successors, (2560), 11 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:09,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:09,737 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:09,737 INFO L186 Difference]: Start difference. First operand has 409 places, 498 transitions, 4756 flow. Second operand 11 states and 2560 transitions. [2022-07-13 22:04:09,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 565 transitions, 5866 flow [2022-07-13 22:04:09,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 565 transitions, 5765 flow, removed 26 selfloop flow, removed 8 redundant places. [2022-07-13 22:04:09,953 INFO L242 Difference]: Finished difference. Result has 410 places, 505 transitions, 5152 flow [2022-07-13 22:04:09,954 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=4673, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5152, PETRI_PLACES=410, PETRI_TRANSITIONS=505} [2022-07-13 22:04:09,954 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 165 predicate places. [2022-07-13 22:04:09,954 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 505 transitions, 5152 flow [2022-07-13 22:04:09,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:09,955 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:09,955 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:09,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 22:04:09,955 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:09,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:09,956 INFO L85 PathProgramCache]: Analyzing trace with hash 877685243, now seen corresponding path program 9 times [2022-07-13 22:04:09,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:09,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904146967] [2022-07-13 22:04:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:09,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-13 22:04:10,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:10,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904146967] [2022-07-13 22:04:10,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904146967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:10,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:10,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:10,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755055637] [2022-07-13 22:04:10,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:10,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:10,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:10,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:10,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:10,067 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:04:10,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 505 transitions, 5152 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:10,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:10,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:04:10,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:12,518 INFO L129 PetriNetUnfolder]: 1805/12290 cut-off events. [2022-07-13 22:04:12,519 INFO L130 PetriNetUnfolder]: For 77053/78590 co-relation queries the response was YES. [2022-07-13 22:04:12,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32726 conditions, 12290 events. 1805/12290 cut-off events. For 77053/78590 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 136032 event pairs, 336 based on Foata normal form. 444/12583 useless extension candidates. Maximal degree in co-relation 32649. Up to 1927 conditions per place. [2022-07-13 22:04:12,648 INFO L132 encePairwiseOnDemand]: 256/272 looper letters, 165 selfloop transitions, 129 changer transitions 9/576 dead transitions. [2022-07-13 22:04:12,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 576 transitions, 6413 flow [2022-07-13 22:04:12,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:04:12,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:04:12,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2319 transitions. [2022-07-13 22:04:12,651 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8525735294117647 [2022-07-13 22:04:12,651 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2319 transitions. [2022-07-13 22:04:12,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2319 transitions. [2022-07-13 22:04:12,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:12,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2319 transitions. [2022-07-13 22:04:12,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 231.9) internal successors, (2319), 10 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,657 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,658 INFO L186 Difference]: Start difference. First operand has 410 places, 505 transitions, 5152 flow. Second operand 10 states and 2319 transitions. [2022-07-13 22:04:12,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 576 transitions, 6413 flow [2022-07-13 22:04:12,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 576 transitions, 6228 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-07-13 22:04:12,908 INFO L242 Difference]: Finished difference. Result has 415 places, 524 transitions, 5693 flow [2022-07-13 22:04:12,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=4977, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5693, PETRI_PLACES=415, PETRI_TRANSITIONS=524} [2022-07-13 22:04:12,909 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 170 predicate places. [2022-07-13 22:04:12,909 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 524 transitions, 5693 flow [2022-07-13 22:04:12,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,910 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:12,910 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:12,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 22:04:12,911 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:12,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:12,911 INFO L85 PathProgramCache]: Analyzing trace with hash -4048551, now seen corresponding path program 10 times [2022-07-13 22:04:12,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:12,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541254159] [2022-07-13 22:04:12,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:12,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:13,057 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-13 22:04:13,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:13,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541254159] [2022-07-13 22:04:13,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541254159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:13,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:13,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:13,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769721169] [2022-07-13 22:04:13,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:13,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:13,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:13,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:13,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:13,060 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:04:13,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 524 transitions, 5693 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:13,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:13,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:04:13,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:15,684 INFO L129 PetriNetUnfolder]: 1810/12137 cut-off events. [2022-07-13 22:04:15,685 INFO L130 PetriNetUnfolder]: For 81005/82570 co-relation queries the response was YES. [2022-07-13 22:04:15,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33108 conditions, 12137 events. 1810/12137 cut-off events. For 81005/82570 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 133264 event pairs, 236 based on Foata normal form. 611/12600 useless extension candidates. Maximal degree in co-relation 33029. Up to 1726 conditions per place. [2022-07-13 22:04:15,804 INFO L132 encePairwiseOnDemand]: 250/272 looper letters, 132 selfloop transitions, 185 changer transitions 16/606 dead transitions. [2022-07-13 22:04:15,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 606 transitions, 7132 flow [2022-07-13 22:04:15,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:04:15,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:04:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3914 transitions. [2022-07-13 22:04:15,809 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8464532871972318 [2022-07-13 22:04:15,809 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3914 transitions. [2022-07-13 22:04:15,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3914 transitions. [2022-07-13 22:04:15,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:15,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3914 transitions. [2022-07-13 22:04:15,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 230.23529411764707) internal successors, (3914), 17 states have internal predecessors, (3914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:15,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 272.0) internal successors, (4896), 18 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:15,826 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 272.0) internal successors, (4896), 18 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:15,826 INFO L186 Difference]: Start difference. First operand has 415 places, 524 transitions, 5693 flow. Second operand 17 states and 3914 transitions. [2022-07-13 22:04:15,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 606 transitions, 7132 flow [2022-07-13 22:04:16,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 606 transitions, 7049 flow, removed 38 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:16,048 INFO L242 Difference]: Finished difference. Result has 435 places, 540 transitions, 6479 flow [2022-07-13 22:04:16,048 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=5654, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6479, PETRI_PLACES=435, PETRI_TRANSITIONS=540} [2022-07-13 22:04:16,049 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 190 predicate places. [2022-07-13 22:04:16,049 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 540 transitions, 6479 flow [2022-07-13 22:04:16,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,049 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:16,049 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:16,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 22:04:16,050 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:16,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:16,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1652799699, now seen corresponding path program 1 times [2022-07-13 22:04:16,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:16,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736326435] [2022-07-13 22:04:16,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:16,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-13 22:04:16,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:16,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736326435] [2022-07-13 22:04:16,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736326435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:16,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:16,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:04:16,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125597774] [2022-07-13 22:04:16,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:16,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:04:16,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:16,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:04:16,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:04:16,167 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:04:16,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 540 transitions, 6479 flow. Second operand has 8 states, 8 states have (on average 224.75) internal successors, (1798), 8 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:16,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:04:16,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:19,215 INFO L129 PetriNetUnfolder]: 2731/14564 cut-off events. [2022-07-13 22:04:19,216 INFO L130 PetriNetUnfolder]: For 61805/62749 co-relation queries the response was YES. [2022-07-13 22:04:19,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37904 conditions, 14564 events. 2731/14564 cut-off events. For 61805/62749 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 165399 event pairs, 1057 based on Foata normal form. 258/14634 useless extension candidates. Maximal degree in co-relation 37818. Up to 3434 conditions per place. [2022-07-13 22:04:19,440 INFO L132 encePairwiseOnDemand]: 265/272 looper letters, 130 selfloop transitions, 16 changer transitions 5/617 dead transitions. [2022-07-13 22:04:19,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 617 transitions, 7172 flow [2022-07-13 22:04:19,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:04:19,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:04:19,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1634 transitions. [2022-07-13 22:04:19,442 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8581932773109243 [2022-07-13 22:04:19,442 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1634 transitions. [2022-07-13 22:04:19,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1634 transitions. [2022-07-13 22:04:19,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:19,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1634 transitions. [2022-07-13 22:04:19,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 233.42857142857142) internal successors, (1634), 7 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,448 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,448 INFO L186 Difference]: Start difference. First operand has 435 places, 540 transitions, 6479 flow. Second operand 7 states and 1634 transitions. [2022-07-13 22:04:19,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 617 transitions, 7172 flow [2022-07-13 22:04:19,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 617 transitions, 7011 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-07-13 22:04:19,684 INFO L242 Difference]: Finished difference. Result has 436 places, 546 transitions, 6416 flow [2022-07-13 22:04:19,685 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=6318, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6416, PETRI_PLACES=436, PETRI_TRANSITIONS=546} [2022-07-13 22:04:19,685 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 191 predicate places. [2022-07-13 22:04:19,685 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 546 transitions, 6416 flow [2022-07-13 22:04:19,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 224.75) internal successors, (1798), 8 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,686 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:19,686 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:19,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 22:04:19,686 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:19,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:19,687 INFO L85 PathProgramCache]: Analyzing trace with hash 967671905, now seen corresponding path program 11 times [2022-07-13 22:04:19,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:19,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731131420] [2022-07-13 22:04:19,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:19,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-13 22:04:19,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:19,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731131420] [2022-07-13 22:04:19,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731131420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:19,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:19,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:19,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76846363] [2022-07-13 22:04:19,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:19,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:19,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:19,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:19,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:19,827 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:04:19,828 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 546 transitions, 6416 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:19,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:04:19,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:23,380 INFO L129 PetriNetUnfolder]: 2191/15055 cut-off events. [2022-07-13 22:04:23,380 INFO L130 PetriNetUnfolder]: For 97614/99034 co-relation queries the response was YES. [2022-07-13 22:04:23,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41424 conditions, 15055 events. 2191/15055 cut-off events. For 97614/99034 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 173948 event pairs, 261 based on Foata normal form. 564/15427 useless extension candidates. Maximal degree in co-relation 41337. Up to 2387 conditions per place. [2022-07-13 22:04:23,640 INFO L132 encePairwiseOnDemand]: 252/272 looper letters, 172 selfloop transitions, 197 changer transitions 15/663 dead transitions. [2022-07-13 22:04:23,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 663 transitions, 8732 flow [2022-07-13 22:04:23,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 22:04:23,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 22:04:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3018 transitions. [2022-07-13 22:04:23,643 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8535067873303167 [2022-07-13 22:04:23,643 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3018 transitions. [2022-07-13 22:04:23,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3018 transitions. [2022-07-13 22:04:23,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:23,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3018 transitions. [2022-07-13 22:04:23,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 232.15384615384616) internal successors, (3018), 13 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,650 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,650 INFO L186 Difference]: Start difference. First operand has 436 places, 546 transitions, 6416 flow. Second operand 13 states and 3018 transitions. [2022-07-13 22:04:23,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 663 transitions, 8732 flow [2022-07-13 22:04:23,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 663 transitions, 8708 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-13 22:04:23,948 INFO L242 Difference]: Finished difference. Result has 448 places, 593 transitions, 8158 flow [2022-07-13 22:04:23,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=6392, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8158, PETRI_PLACES=448, PETRI_TRANSITIONS=593} [2022-07-13 22:04:23,949 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 203 predicate places. [2022-07-13 22:04:23,949 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 593 transitions, 8158 flow [2022-07-13 22:04:23,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,949 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:23,950 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:23,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 22:04:23,950 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:23,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:23,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1865901937, now seen corresponding path program 2 times [2022-07-13 22:04:23,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:23,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998631768] [2022-07-13 22:04:23,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:23,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-13 22:04:24,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:24,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998631768] [2022-07-13 22:04:24,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998631768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:24,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:24,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:24,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870039664] [2022-07-13 22:04:24,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:24,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:24,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:24,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:24,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:24,045 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:04:24,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 593 transitions, 8158 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:24,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:04:24,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:28,402 INFO L129 PetriNetUnfolder]: 3959/20995 cut-off events. [2022-07-13 22:04:28,402 INFO L130 PetriNetUnfolder]: For 103854/105080 co-relation queries the response was YES. [2022-07-13 22:04:28,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57196 conditions, 20995 events. 3959/20995 cut-off events. For 103854/105080 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 259189 event pairs, 1293 based on Foata normal form. 442/21242 useless extension candidates. Maximal degree in co-relation 57106. Up to 4525 conditions per place. [2022-07-13 22:04:29,013 INFO L132 encePairwiseOnDemand]: 262/272 looper letters, 121 selfloop transitions, 35 changer transitions 3/672 dead transitions. [2022-07-13 22:04:29,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 672 transitions, 8887 flow [2022-07-13 22:04:29,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:04:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:04:29,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1641 transitions. [2022-07-13 22:04:29,015 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8618697478991597 [2022-07-13 22:04:29,015 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1641 transitions. [2022-07-13 22:04:29,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1641 transitions. [2022-07-13 22:04:29,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:29,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1641 transitions. [2022-07-13 22:04:29,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 234.42857142857142) internal successors, (1641), 7 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,020 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,020 INFO L186 Difference]: Start difference. First operand has 448 places, 593 transitions, 8158 flow. Second operand 7 states and 1641 transitions. [2022-07-13 22:04:29,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 672 transitions, 8887 flow [2022-07-13 22:04:29,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 672 transitions, 8820 flow, removed 13 selfloop flow, removed 6 redundant places. [2022-07-13 22:04:29,525 INFO L242 Difference]: Finished difference. Result has 450 places, 610 transitions, 8362 flow [2022-07-13 22:04:29,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=8091, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8362, PETRI_PLACES=450, PETRI_TRANSITIONS=610} [2022-07-13 22:04:29,526 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 205 predicate places. [2022-07-13 22:04:29,526 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 610 transitions, 8362 flow [2022-07-13 22:04:29,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,526 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:29,526 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:29,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 22:04:29,527 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:29,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:29,527 INFO L85 PathProgramCache]: Analyzing trace with hash 320403445, now seen corresponding path program 3 times [2022-07-13 22:04:29,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:29,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088658790] [2022-07-13 22:04:29,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:29,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:29,663 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-13 22:04:29,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:29,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088658790] [2022-07-13 22:04:29,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088658790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:29,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:29,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:29,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784457355] [2022-07-13 22:04:29,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:29,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:29,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:29,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:29,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:29,667 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:04:29,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 610 transitions, 8362 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:29,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:04:29,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:35,951 INFO L129 PetriNetUnfolder]: 4318/24222 cut-off events. [2022-07-13 22:04:35,951 INFO L130 PetriNetUnfolder]: For 136209/138388 co-relation queries the response was YES. [2022-07-13 22:04:36,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69011 conditions, 24222 events. 4318/24222 cut-off events. For 136209/138388 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 309001 event pairs, 1252 based on Foata normal form. 820/24816 useless extension candidates. Maximal degree in co-relation 68921. Up to 3358 conditions per place. [2022-07-13 22:04:36,497 INFO L132 encePairwiseOnDemand]: 258/272 looper letters, 106 selfloop transitions, 76 changer transitions 4/699 dead transitions. [2022-07-13 22:04:36,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 699 transitions, 9404 flow [2022-07-13 22:04:36,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:04:36,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 22:04:36,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3239 transitions. [2022-07-13 22:04:36,501 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850577731092437 [2022-07-13 22:04:36,501 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3239 transitions. [2022-07-13 22:04:36,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3239 transitions. [2022-07-13 22:04:36,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:36,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3239 transitions. [2022-07-13 22:04:36,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 231.35714285714286) internal successors, (3239), 14 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:36,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 272.0) internal successors, (4080), 15 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:36,507 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 272.0) internal successors, (4080), 15 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:36,507 INFO L186 Difference]: Start difference. First operand has 450 places, 610 transitions, 8362 flow. Second operand 14 states and 3239 transitions. [2022-07-13 22:04:36,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 699 transitions, 9404 flow [2022-07-13 22:04:37,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 699 transitions, 9362 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-13 22:04:37,159 INFO L242 Difference]: Finished difference. Result has 468 places, 624 transitions, 8797 flow [2022-07-13 22:04:37,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=8314, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8797, PETRI_PLACES=468, PETRI_TRANSITIONS=624} [2022-07-13 22:04:37,160 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 223 predicate places. [2022-07-13 22:04:37,160 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 624 transitions, 8797 flow [2022-07-13 22:04:37,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:37,160 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:37,161 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:37,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 22:04:37,161 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:37,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:37,161 INFO L85 PathProgramCache]: Analyzing trace with hash -789420411, now seen corresponding path program 4 times [2022-07-13 22:04:37,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:37,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887846203] [2022-07-13 22:04:37,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:37,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:04:37,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:37,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887846203] [2022-07-13 22:04:37,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887846203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:37,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:37,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:37,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217816672] [2022-07-13 22:04:37,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:37,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:37,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:37,319 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:04:37,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 624 transitions, 8797 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:37,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:37,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:04:37,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:43,990 INFO L129 PetriNetUnfolder]: 4634/26524 cut-off events. [2022-07-13 22:04:43,990 INFO L130 PetriNetUnfolder]: For 176131/178609 co-relation queries the response was YES. [2022-07-13 22:04:44,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80470 conditions, 26524 events. 4634/26524 cut-off events. For 176131/178609 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 346202 event pairs, 1502 based on Foata normal form. 661/26909 useless extension candidates. Maximal degree in co-relation 80372. Up to 3074 conditions per place. [2022-07-13 22:04:44,536 INFO L132 encePairwiseOnDemand]: 262/272 looper letters, 134 selfloop transitions, 67 changer transitions 2/716 dead transitions. [2022-07-13 22:04:44,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 716 transitions, 9935 flow [2022-07-13 22:04:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:04:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 22:04:44,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1882 transitions. [2022-07-13 22:04:44,537 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8648897058823529 [2022-07-13 22:04:44,538 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1882 transitions. [2022-07-13 22:04:44,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1882 transitions. [2022-07-13 22:04:44,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:44,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1882 transitions. [2022-07-13 22:04:44,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 235.25) internal successors, (1882), 8 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:44,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 272.0) internal successors, (2448), 9 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:44,542 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 272.0) internal successors, (2448), 9 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:44,542 INFO L186 Difference]: Start difference. First operand has 468 places, 624 transitions, 8797 flow. Second operand 8 states and 1882 transitions. [2022-07-13 22:04:44,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 716 transitions, 9935 flow [2022-07-13 22:04:45,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 716 transitions, 9889 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-07-13 22:04:45,364 INFO L242 Difference]: Finished difference. Result has 477 places, 641 transitions, 9245 flow [2022-07-13 22:04:45,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=8768, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9245, PETRI_PLACES=477, PETRI_TRANSITIONS=641} [2022-07-13 22:04:45,365 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 232 predicate places. [2022-07-13 22:04:45,365 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 641 transitions, 9245 flow [2022-07-13 22:04:45,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:45,366 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:45,366 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:45,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 22:04:45,366 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:45,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:45,367 INFO L85 PathProgramCache]: Analyzing trace with hash -956925957, now seen corresponding path program 5 times [2022-07-13 22:04:45,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:45,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216944084] [2022-07-13 22:04:45,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:45,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:45,482 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-13 22:04:45,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:45,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216944084] [2022-07-13 22:04:45,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216944084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:45,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:45,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:45,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525781874] [2022-07-13 22:04:45,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:45,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:45,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:45,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:45,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:45,486 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:04:45,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 641 transitions, 9245 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:45,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:45,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:04:45,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:53,367 INFO L129 PetriNetUnfolder]: 5121/29398 cut-off events. [2022-07-13 22:04:53,367 INFO L130 PetriNetUnfolder]: For 213585/216488 co-relation queries the response was YES. [2022-07-13 22:04:54,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91506 conditions, 29398 events. 5121/29398 cut-off events. For 213585/216488 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 390922 event pairs, 1081 based on Foata normal form. 947/30050 useless extension candidates. Maximal degree in co-relation 91403. Up to 6877 conditions per place. [2022-07-13 22:04:54,101 INFO L132 encePairwiseOnDemand]: 259/272 looper letters, 110 selfloop transitions, 86 changer transitions 5/714 dead transitions. [2022-07-13 22:04:54,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 714 transitions, 10384 flow [2022-07-13 22:04:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:04:54,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 22:04:54,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1856 transitions. [2022-07-13 22:04:54,104 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8529411764705882 [2022-07-13 22:04:54,104 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1856 transitions. [2022-07-13 22:04:54,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1856 transitions. [2022-07-13 22:04:54,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:54,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1856 transitions. [2022-07-13 22:04:54,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:54,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 272.0) internal successors, (2448), 9 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:54,109 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 272.0) internal successors, (2448), 9 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:54,109 INFO L186 Difference]: Start difference. First operand has 477 places, 641 transitions, 9245 flow. Second operand 8 states and 1856 transitions. [2022-07-13 22:04:54,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 714 transitions, 10384 flow [2022-07-13 22:04:55,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 714 transitions, 10286 flow, removed 27 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:55,247 INFO L242 Difference]: Finished difference. Result has 488 places, 666 transitions, 9852 flow [2022-07-13 22:04:55,247 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=9176, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9852, PETRI_PLACES=488, PETRI_TRANSITIONS=666} [2022-07-13 22:04:55,248 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 243 predicate places. [2022-07-13 22:04:55,248 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 666 transitions, 9852 flow [2022-07-13 22:04:55,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:55,248 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:55,248 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:55,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 22:04:55,249 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:55,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:55,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1493863475, now seen corresponding path program 6 times [2022-07-13 22:04:55,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:55,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35333348] [2022-07-13 22:04:55,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:55,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:04:55,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:55,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35333348] [2022-07-13 22:04:55,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35333348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:55,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:55,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:55,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086249422] [2022-07-13 22:04:55,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:55,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:55,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:55,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:55,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:55,400 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-13 22:04:55,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 666 transitions, 9852 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:55,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:55,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-13 22:04:55,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand