./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/weaver/chl-word-trans.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 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 12:25:06,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 12:25:06,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 12:25:06,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 12:25:06,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 12:25:06,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 12:25:06,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 12:25:06,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 12:25:06,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 12:25:06,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 12:25:06,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 12:25:06,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 12:25:06,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 12:25:06,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 12:25:06,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 12:25:06,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 12:25:06,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 12:25:06,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 12:25:06,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 12:25:06,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 12:25:06,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 12:25:06,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 12:25:06,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 12:25:06,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 12:25:06,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 12:25:06,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 12:25:06,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 12:25:06,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 12:25:06,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 12:25:06,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 12:25:06,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 12:25:06,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 12:25:06,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 12:25:06,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 12:25:06,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 12:25:06,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 12:25:06,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 12:25:06,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 12:25:06,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 12:25:06,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 12:25:06,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 12:25:06,924 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 12:25:06,957 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 12:25:06,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 12:25:06,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 12:25:06,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 12:25:06,960 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 12:25:06,960 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 12:25:06,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 12:25:06,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 12:25:06,961 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 12:25:06,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 12:25:06,962 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 12:25:06,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 12:25:06,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 12:25:06,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 12:25:06,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 12:25:06,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 12:25:06,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 12:25:06,963 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 12:25:06,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 12:25:06,964 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 12:25:06,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 12:25:06,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 12:25:06,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 12:25:06,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 12:25:06,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:25:06,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 12:25:06,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 12:25:06,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 12:25:06,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 12:25:06,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 12:25:06,966 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 12:25:06,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 12:25:06,967 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 12:25:06,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 12:25:06,967 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 12:25:06,967 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 12:25:07,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 12:25:07,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 12:25:07,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 12:25:07,318 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 12:25:07,318 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 12:25:07,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2023-09-01 12:25:08,448 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 12:25:08,630 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 12:25:08,630 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2023-09-01 12:25:08,639 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7260be0e6/2fff6406b76f430fb912c6db44dd6260/FLAG425e9f93b [2023-09-01 12:25:08,661 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7260be0e6/2fff6406b76f430fb912c6db44dd6260 [2023-09-01 12:25:08,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 12:25:08,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 12:25:08,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 12:25:08,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 12:25:08,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 12:25:08,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:25:08" (1/1) ... [2023-09-01 12:25:08,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ca9a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:08, skipping insertion in model container [2023-09-01 12:25:08,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:25:08" (1/1) ... [2023-09-01 12:25:08,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 12:25:08,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 12:25:08,861 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c[3292,3305] [2023-09-01 12:25:08,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:25:08,888 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 12:25:08,939 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c[3292,3305] [2023-09-01 12:25:08,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:25:08,963 INFO L208 MainTranslator]: Completed translation [2023-09-01 12:25:08,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:08 WrapperNode [2023-09-01 12:25:08,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 12:25:08,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 12:25:08,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 12:25:08,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 12:25:08,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:08" (1/1) ... [2023-09-01 12:25:08,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:08" (1/1) ... [2023-09-01 12:25:09,025 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 181 [2023-09-01 12:25:09,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 12:25:09,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 12:25:09,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 12:25:09,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 12:25:09,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:08" (1/1) ... [2023-09-01 12:25:09,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:08" (1/1) ... [2023-09-01 12:25:09,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:08" (1/1) ... [2023-09-01 12:25:09,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:08" (1/1) ... [2023-09-01 12:25:09,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:08" (1/1) ... [2023-09-01 12:25:09,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:08" (1/1) ... [2023-09-01 12:25:09,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:08" (1/1) ... [2023-09-01 12:25:09,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:08" (1/1) ... [2023-09-01 12:25:09,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 12:25:09,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 12:25:09,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 12:25:09,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 12:25:09,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:08" (1/1) ... [2023-09-01 12:25:09,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:25:09,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:25:09,111 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) [2023-09-01 12:25:09,138 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 [2023-09-01 12:25:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 12:25:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 12:25:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 12:25:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 12:25:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 12:25:09,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 12:25:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 12:25:09,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 12:25:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 12:25:09,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 12:25:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 12:25:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 12:25:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 12:25:09,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 12:25:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 12:25:09,159 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 12:25:09,282 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 12:25:09,284 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 12:25:09,690 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 12:25:09,700 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 12:25:09,700 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 12:25:09,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:25:09 BoogieIcfgContainer [2023-09-01 12:25:09,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 12:25:09,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 12:25:09,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 12:25:09,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 12:25:09,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:25:08" (1/3) ... [2023-09-01 12:25:09,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b43e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:25:09, skipping insertion in model container [2023-09-01 12:25:09,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:08" (2/3) ... [2023-09-01 12:25:09,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b43e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:25:09, skipping insertion in model container [2023-09-01 12:25:09,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:25:09" (3/3) ... [2023-09-01 12:25:09,710 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2023-09-01 12:25:09,717 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 12:25:09,725 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 12:25:09,726 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 12:25:09,726 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 12:25:09,867 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 12:25:09,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 291 transitions, 606 flow [2023-09-01 12:25:10,036 INFO L130 PetriNetUnfolder]: 28/288 cut-off events. [2023-09-01 12:25:10,036 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:25:10,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 288 events. 28/288 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 367 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 232. Up to 3 conditions per place. [2023-09-01 12:25:10,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 291 transitions, 606 flow [2023-09-01 12:25:10,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 278 transitions, 574 flow [2023-09-01 12:25:10,052 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 12:25:10,060 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 278 transitions, 574 flow [2023-09-01 12:25:10,062 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 278 transitions, 574 flow [2023-09-01 12:25:10,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 278 transitions, 574 flow [2023-09-01 12:25:10,120 INFO L130 PetriNetUnfolder]: 28/278 cut-off events. [2023-09-01 12:25:10,120 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:25:10,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 278 events. 28/278 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 366 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 232. Up to 3 conditions per place. [2023-09-01 12:25:10,126 INFO L119 LiptonReduction]: Number of co-enabled transitions 7560 [2023-09-01 12:25:18,297 INFO L134 LiptonReduction]: Checked pairs total: 9572 [2023-09-01 12:25:18,298 INFO L136 LiptonReduction]: Total number of compositions: 286 [2023-09-01 12:25:18,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 12:25:18,316 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b8ef657, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 12:25:18,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 12:25:18,323 INFO L130 PetriNetUnfolder]: 11/38 cut-off events. [2023-09-01 12:25:18,323 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:25:18,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:18,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:18,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:18,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:18,329 INFO L85 PathProgramCache]: Analyzing trace with hash -198049977, now seen corresponding path program 1 times [2023-09-01 12:25:18,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:18,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264169950] [2023-09-01 12:25:18,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:18,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:25:19,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:19,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264169950] [2023-09-01 12:25:19,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264169950] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:19,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:19,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:19,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736416034] [2023-09-01 12:25:19,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:19,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:19,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:19,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:19,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:19,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 577 [2023-09-01 12:25:19,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 254.8) internal successors, (1274), 5 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:19,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:19,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 577 [2023-09-01 12:25:19,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:19,708 INFO L130 PetriNetUnfolder]: 1171/1617 cut-off events. [2023-09-01 12:25:19,708 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2023-09-01 12:25:19,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3350 conditions, 1617 events. 1171/1617 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5881 event pairs, 283 based on Foata normal form. 1/1040 useless extension candidates. Maximal degree in co-relation 2879. Up to 593 conditions per place. [2023-09-01 12:25:19,718 INFO L137 encePairwiseOnDemand]: 566/577 looper letters, 100 selfloop transitions, 18 changer transitions 2/121 dead transitions. [2023-09-01 12:25:19,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 121 transitions, 539 flow [2023-09-01 12:25:19,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:25:19,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:25:19,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1878 transitions. [2023-09-01 12:25:19,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649665758851201 [2023-09-01 12:25:19,737 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1878 transitions. [2023-09-01 12:25:19,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1878 transitions. [2023-09-01 12:25:19,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:19,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1878 transitions. [2023-09-01 12:25:19,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 268.2857142857143) internal successors, (1878), 7 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:19,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:19,760 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:19,762 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 96 flow. Second operand 7 states and 1878 transitions. [2023-09-01 12:25:19,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 121 transitions, 539 flow [2023-09-01 12:25:19,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 121 transitions, 501 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 12:25:19,770 INFO L231 Difference]: Finished difference. Result has 42 places, 55 transitions, 196 flow [2023-09-01 12:25:19,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=196, PETRI_PLACES=42, PETRI_TRANSITIONS=55} [2023-09-01 12:25:19,775 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-09-01 12:25:19,775 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 55 transitions, 196 flow [2023-09-01 12:25:19,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 254.8) internal successors, (1274), 5 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:19,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:19,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:19,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 12:25:19,777 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:19,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:19,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1928900777, now seen corresponding path program 2 times [2023-09-01 12:25:19,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:19,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673793854] [2023-09-01 12:25:19,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:19,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:25:20,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:20,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673793854] [2023-09-01 12:25:20,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673793854] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:20,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:20,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:20,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995532681] [2023-09-01 12:25:20,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:20,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:20,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:20,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:20,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:20,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 577 [2023-09-01 12:25:20,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 55 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 254.8) internal successors, (1274), 5 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:20,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:20,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 577 [2023-09-01 12:25:20,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:20,528 INFO L130 PetriNetUnfolder]: 1367/1957 cut-off events. [2023-09-01 12:25:20,528 INFO L131 PetriNetUnfolder]: For 694/703 co-relation queries the response was YES. [2023-09-01 12:25:20,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5164 conditions, 1957 events. 1367/1957 cut-off events. For 694/703 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7959 event pairs, 141 based on Foata normal form. 9/1724 useless extension candidates. Maximal degree in co-relation 4458. Up to 691 conditions per place. [2023-09-01 12:25:20,538 INFO L137 encePairwiseOnDemand]: 565/577 looper letters, 114 selfloop transitions, 30 changer transitions 1/146 dead transitions. [2023-09-01 12:25:20,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 146 transitions, 760 flow [2023-09-01 12:25:20,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:25:20,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:25:20,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1887 transitions. [2023-09-01 12:25:20,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46719485021044815 [2023-09-01 12:25:20,544 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1887 transitions. [2023-09-01 12:25:20,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1887 transitions. [2023-09-01 12:25:20,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:20,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1887 transitions. [2023-09-01 12:25:20,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 269.57142857142856) internal successors, (1887), 7 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:20,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:20,557 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:20,557 INFO L175 Difference]: Start difference. First operand has 42 places, 55 transitions, 196 flow. Second operand 7 states and 1887 transitions. [2023-09-01 12:25:20,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 146 transitions, 760 flow [2023-09-01 12:25:20,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 146 transitions, 754 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-09-01 12:25:20,566 INFO L231 Difference]: Finished difference. Result has 51 places, 77 transitions, 409 flow [2023-09-01 12:25:20,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=409, PETRI_PLACES=51, PETRI_TRANSITIONS=77} [2023-09-01 12:25:20,567 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-09-01 12:25:20,567 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 77 transitions, 409 flow [2023-09-01 12:25:20,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 254.8) internal successors, (1274), 5 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:20,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:20,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:20,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 12:25:20,569 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:20,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:20,572 INFO L85 PathProgramCache]: Analyzing trace with hash 178772231, now seen corresponding path program 3 times [2023-09-01 12:25:20,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:20,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614674428] [2023-09-01 12:25:20,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:20,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:20,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:25:20,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:20,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614674428] [2023-09-01 12:25:20,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614674428] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:20,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:20,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:20,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211585824] [2023-09-01 12:25:20,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:20,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:20,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:20,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:20,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:20,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 577 [2023-09-01 12:25:20,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 77 transitions, 409 flow. Second operand has 5 states, 5 states have (on average 254.8) internal successors, (1274), 5 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:20,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:20,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 577 [2023-09-01 12:25:20,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:21,208 INFO L130 PetriNetUnfolder]: 1591/2329 cut-off events. [2023-09-01 12:25:21,208 INFO L131 PetriNetUnfolder]: For 2804/2855 co-relation queries the response was YES. [2023-09-01 12:25:21,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7179 conditions, 2329 events. 1591/2329 cut-off events. For 2804/2855 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10018 event pairs, 733 based on Foata normal form. 9/2089 useless extension candidates. Maximal degree in co-relation 6382. Up to 1571 conditions per place. [2023-09-01 12:25:21,221 INFO L137 encePairwiseOnDemand]: 571/577 looper letters, 106 selfloop transitions, 12 changer transitions 2/121 dead transitions. [2023-09-01 12:25:21,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 121 transitions, 815 flow [2023-09-01 12:25:21,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:25:21,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:25:21,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1337 transitions. [2023-09-01 12:25:21,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634315424610052 [2023-09-01 12:25:21,225 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1337 transitions. [2023-09-01 12:25:21,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1337 transitions. [2023-09-01 12:25:21,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:21,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1337 transitions. [2023-09-01 12:25:21,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 267.4) internal successors, (1337), 5 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:21,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:21,235 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:21,235 INFO L175 Difference]: Start difference. First operand has 51 places, 77 transitions, 409 flow. Second operand 5 states and 1337 transitions. [2023-09-01 12:25:21,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 121 transitions, 815 flow [2023-09-01 12:25:21,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 121 transitions, 799 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-09-01 12:25:21,254 INFO L231 Difference]: Finished difference. Result has 58 places, 80 transitions, 469 flow [2023-09-01 12:25:21,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=469, PETRI_PLACES=58, PETRI_TRANSITIONS=80} [2023-09-01 12:25:21,255 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-09-01 12:25:21,255 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 80 transitions, 469 flow [2023-09-01 12:25:21,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 254.8) internal successors, (1274), 5 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:21,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:21,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:21,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 12:25:21,257 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:21,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:21,257 INFO L85 PathProgramCache]: Analyzing trace with hash -199425411, now seen corresponding path program 4 times [2023-09-01 12:25:21,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:21,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571929446] [2023-09-01 12:25:21,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:21,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:21,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:25:21,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:21,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571929446] [2023-09-01 12:25:21,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571929446] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:21,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:21,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:21,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650535769] [2023-09-01 12:25:21,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:21,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:21,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:21,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:21,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:21,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 577 [2023-09-01 12:25:21,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 80 transitions, 469 flow. Second operand has 5 states, 5 states have (on average 253.8) internal successors, (1269), 5 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:21,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:21,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 577 [2023-09-01 12:25:21,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:21,981 INFO L130 PetriNetUnfolder]: 1644/2403 cut-off events. [2023-09-01 12:25:21,981 INFO L131 PetriNetUnfolder]: For 3444/3506 co-relation queries the response was YES. [2023-09-01 12:25:21,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7615 conditions, 2403 events. 1644/2403 cut-off events. For 3444/3506 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 10519 event pairs, 309 based on Foata normal form. 30/2183 useless extension candidates. Maximal degree in co-relation 6806. Up to 1143 conditions per place. [2023-09-01 12:25:21,996 INFO L137 encePairwiseOnDemand]: 565/577 looper letters, 109 selfloop transitions, 33 changer transitions 1/144 dead transitions. [2023-09-01 12:25:21,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 144 transitions, 974 flow [2023-09-01 12:25:21,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:25:21,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:25:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1614 transitions. [2023-09-01 12:25:22,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662045060658579 [2023-09-01 12:25:22,001 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1614 transitions. [2023-09-01 12:25:22,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1614 transitions. [2023-09-01 12:25:22,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:22,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1614 transitions. [2023-09-01 12:25:22,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:22,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:22,011 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:22,011 INFO L175 Difference]: Start difference. First operand has 58 places, 80 transitions, 469 flow. Second operand 6 states and 1614 transitions. [2023-09-01 12:25:22,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 144 transitions, 974 flow [2023-09-01 12:25:22,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 144 transitions, 954 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 12:25:22,034 INFO L231 Difference]: Finished difference. Result has 65 places, 88 transitions, 633 flow [2023-09-01 12:25:22,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=633, PETRI_PLACES=65, PETRI_TRANSITIONS=88} [2023-09-01 12:25:22,035 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 27 predicate places. [2023-09-01 12:25:22,036 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 88 transitions, 633 flow [2023-09-01 12:25:22,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 253.8) internal successors, (1269), 5 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:22,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:22,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:22,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 12:25:22,037 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:22,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:22,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1670298909, now seen corresponding path program 5 times [2023-09-01 12:25:22,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:22,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156454595] [2023-09-01 12:25:22,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:22,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:22,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:25:22,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:22,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156454595] [2023-09-01 12:25:22,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156454595] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:22,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:22,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:22,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123121687] [2023-09-01 12:25:22,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:22,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:22,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:22,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:22,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:22,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 577 [2023-09-01 12:25:22,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 88 transitions, 633 flow. Second operand has 5 states, 5 states have (on average 253.8) internal successors, (1269), 5 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:22,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:22,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 577 [2023-09-01 12:25:22,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:22,774 INFO L130 PetriNetUnfolder]: 1738/2562 cut-off events. [2023-09-01 12:25:22,774 INFO L131 PetriNetUnfolder]: For 6258/6309 co-relation queries the response was YES. [2023-09-01 12:25:22,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9011 conditions, 2562 events. 1738/2562 cut-off events. For 6258/6309 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 11549 event pairs, 309 based on Foata normal form. 25/2327 useless extension candidates. Maximal degree in co-relation 8077. Up to 1109 conditions per place. [2023-09-01 12:25:22,792 INFO L137 encePairwiseOnDemand]: 565/577 looper letters, 138 selfloop transitions, 49 changer transitions 3/191 dead transitions. [2023-09-01 12:25:22,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 191 transitions, 1526 flow [2023-09-01 12:25:22,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:25:22,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:25:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1883 transitions. [2023-09-01 12:25:22,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662045060658579 [2023-09-01 12:25:22,799 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1883 transitions. [2023-09-01 12:25:22,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1883 transitions. [2023-09-01 12:25:22,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:22,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1883 transitions. [2023-09-01 12:25:22,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:22,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:22,811 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:22,811 INFO L175 Difference]: Start difference. First operand has 65 places, 88 transitions, 633 flow. Second operand 7 states and 1883 transitions. [2023-09-01 12:25:22,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 191 transitions, 1526 flow [2023-09-01 12:25:22,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 191 transitions, 1447 flow, removed 32 selfloop flow, removed 1 redundant places. [2023-09-01 12:25:22,862 INFO L231 Difference]: Finished difference. Result has 74 places, 115 transitions, 1022 flow [2023-09-01 12:25:22,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1022, PETRI_PLACES=74, PETRI_TRANSITIONS=115} [2023-09-01 12:25:22,864 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 36 predicate places. [2023-09-01 12:25:22,864 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 115 transitions, 1022 flow [2023-09-01 12:25:22,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 253.8) internal successors, (1269), 5 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:22,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:22,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:22,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 12:25:22,866 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:22,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:22,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1323803525, now seen corresponding path program 6 times [2023-09-01 12:25:22,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:22,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728913643] [2023-09-01 12:25:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:22,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:23,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:25:23,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:23,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728913643] [2023-09-01 12:25:23,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728913643] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:23,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:23,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:23,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793425403] [2023-09-01 12:25:23,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:23,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:23,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:23,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:23,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:23,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 577 [2023-09-01 12:25:23,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 115 transitions, 1022 flow. Second operand has 5 states, 5 states have (on average 254.8) internal successors, (1274), 5 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:23,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:23,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 577 [2023-09-01 12:25:23,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:23,633 INFO L130 PetriNetUnfolder]: 1764/2587 cut-off events. [2023-09-01 12:25:23,634 INFO L131 PetriNetUnfolder]: For 6995/7076 co-relation queries the response was YES. [2023-09-01 12:25:23,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10052 conditions, 2587 events. 1764/2587 cut-off events. For 6995/7076 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 11758 event pairs, 165 based on Foata normal form. 67/2446 useless extension candidates. Maximal degree in co-relation 9518. Up to 1039 conditions per place. [2023-09-01 12:25:23,652 INFO L137 encePairwiseOnDemand]: 565/577 looper letters, 141 selfloop transitions, 53 changer transitions 1/196 dead transitions. [2023-09-01 12:25:23,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 196 transitions, 1737 flow [2023-09-01 12:25:23,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:25:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:25:23,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1889 transitions. [2023-09-01 12:25:23,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46769002228274326 [2023-09-01 12:25:23,657 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1889 transitions. [2023-09-01 12:25:23,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1889 transitions. [2023-09-01 12:25:23,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:23,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1889 transitions. [2023-09-01 12:25:23,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 269.85714285714283) internal successors, (1889), 7 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:23,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:23,668 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:23,668 INFO L175 Difference]: Start difference. First operand has 74 places, 115 transitions, 1022 flow. Second operand 7 states and 1889 transitions. [2023-09-01 12:25:23,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 196 transitions, 1737 flow [2023-09-01 12:25:23,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 196 transitions, 1679 flow, removed 29 selfloop flow, removed 0 redundant places. [2023-09-01 12:25:23,730 INFO L231 Difference]: Finished difference. Result has 83 places, 122 transitions, 1217 flow [2023-09-01 12:25:23,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1217, PETRI_PLACES=83, PETRI_TRANSITIONS=122} [2023-09-01 12:25:23,731 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 45 predicate places. [2023-09-01 12:25:23,731 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 122 transitions, 1217 flow [2023-09-01 12:25:23,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 254.8) internal successors, (1274), 5 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:23,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:23,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:23,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 12:25:23,732 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:23,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:23,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1753561899, now seen corresponding path program 1 times [2023-09-01 12:25:23,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:23,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432701523] [2023-09-01 12:25:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:23,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:23,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:25:23,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:23,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432701523] [2023-09-01 12:25:23,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432701523] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:23,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:23,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 12:25:23,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572151367] [2023-09-01 12:25:23,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:23,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 12:25:23,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:23,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 12:25:23,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 12:25:24,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 577 [2023-09-01 12:25:24,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 122 transitions, 1217 flow. Second operand has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:24,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:24,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 577 [2023-09-01 12:25:24,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:24,929 INFO L130 PetriNetUnfolder]: 3676/5509 cut-off events. [2023-09-01 12:25:24,930 INFO L131 PetriNetUnfolder]: For 25107/25147 co-relation queries the response was YES. [2023-09-01 12:25:24,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22955 conditions, 5509 events. 3676/5509 cut-off events. For 25107/25147 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 29569 event pairs, 790 based on Foata normal form. 5/5092 useless extension candidates. Maximal degree in co-relation 22394. Up to 1559 conditions per place. [2023-09-01 12:25:24,973 INFO L137 encePairwiseOnDemand]: 568/577 looper letters, 240 selfloop transitions, 64 changer transitions 23/328 dead transitions. [2023-09-01 12:25:24,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 328 transitions, 3666 flow [2023-09-01 12:25:24,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:25:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:25:24,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2157 transitions. [2023-09-01 12:25:24,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46728769497400346 [2023-09-01 12:25:24,980 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2157 transitions. [2023-09-01 12:25:24,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2157 transitions. [2023-09-01 12:25:24,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:24,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2157 transitions. [2023-09-01 12:25:24,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 269.625) internal successors, (2157), 8 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:24,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 577.0) internal successors, (5193), 9 states have internal predecessors, (5193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:25,004 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 577.0) internal successors, (5193), 9 states have internal predecessors, (5193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:25,004 INFO L175 Difference]: Start difference. First operand has 83 places, 122 transitions, 1217 flow. Second operand 8 states and 2157 transitions. [2023-09-01 12:25:25,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 328 transitions, 3666 flow [2023-09-01 12:25:25,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 328 transitions, 3472 flow, removed 30 selfloop flow, removed 3 redundant places. [2023-09-01 12:25:25,231 INFO L231 Difference]: Finished difference. Result has 90 places, 150 transitions, 1605 flow [2023-09-01 12:25:25,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1605, PETRI_PLACES=90, PETRI_TRANSITIONS=150} [2023-09-01 12:25:25,232 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 52 predicate places. [2023-09-01 12:25:25,232 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 150 transitions, 1605 flow [2023-09-01 12:25:25,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:25,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:25,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:25,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 12:25:25,234 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:25,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:25,234 INFO L85 PathProgramCache]: Analyzing trace with hash 814884584, now seen corresponding path program 1 times [2023-09-01 12:25:25,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:25,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125223601] [2023-09-01 12:25:25,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:25,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:25:25,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:25,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125223601] [2023-09-01 12:25:25,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125223601] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:25,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:25,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:25,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660327203] [2023-09-01 12:25:25,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:25,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:25,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:25,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:25,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:25,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 577 [2023-09-01 12:25:25,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 150 transitions, 1605 flow. Second operand has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:25,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:25,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 577 [2023-09-01 12:25:25,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:26,266 INFO L130 PetriNetUnfolder]: 3414/5079 cut-off events. [2023-09-01 12:25:26,266 INFO L131 PetriNetUnfolder]: For 21837/21949 co-relation queries the response was YES. [2023-09-01 12:25:26,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21173 conditions, 5079 events. 3414/5079 cut-off events. For 21837/21949 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 26170 event pairs, 1510 based on Foata normal form. 22/4686 useless extension candidates. Maximal degree in co-relation 20710. Up to 3426 conditions per place. [2023-09-01 12:25:26,304 INFO L137 encePairwiseOnDemand]: 573/577 looper letters, 158 selfloop transitions, 15 changer transitions 13/187 dead transitions. [2023-09-01 12:25:26,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 187 transitions, 2120 flow [2023-09-01 12:25:26,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:25:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:25:26,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1356 transitions. [2023-09-01 12:25:26,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47001733102253035 [2023-09-01 12:25:26,309 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1356 transitions. [2023-09-01 12:25:26,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1356 transitions. [2023-09-01 12:25:26,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:26,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1356 transitions. [2023-09-01 12:25:26,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 271.2) internal successors, (1356), 5 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:26,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:26,316 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:26,316 INFO L175 Difference]: Start difference. First operand has 90 places, 150 transitions, 1605 flow. Second operand 5 states and 1356 transitions. [2023-09-01 12:25:26,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 187 transitions, 2120 flow [2023-09-01 12:25:26,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 187 transitions, 2059 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-09-01 12:25:26,462 INFO L231 Difference]: Finished difference. Result has 93 places, 146 transitions, 1510 flow [2023-09-01 12:25:26,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1510, PETRI_PLACES=93, PETRI_TRANSITIONS=146} [2023-09-01 12:25:26,464 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 55 predicate places. [2023-09-01 12:25:26,464 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 146 transitions, 1510 flow [2023-09-01 12:25:26,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:26,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:26,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:26,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 12:25:26,466 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:26,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:26,466 INFO L85 PathProgramCache]: Analyzing trace with hash 5291322, now seen corresponding path program 2 times [2023-09-01 12:25:26,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:26,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439416162] [2023-09-01 12:25:26,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:26,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:25:26,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:26,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439416162] [2023-09-01 12:25:26,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439416162] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:26,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:26,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:26,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037537917] [2023-09-01 12:25:26,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:26,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:26,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:26,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:26,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:26,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-09-01 12:25:26,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 146 transitions, 1510 flow. Second operand has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:26,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:26,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-09-01 12:25:26,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:27,580 INFO L130 PetriNetUnfolder]: 3440/5174 cut-off events. [2023-09-01 12:25:27,581 INFO L131 PetriNetUnfolder]: For 21416/21528 co-relation queries the response was YES. [2023-09-01 12:25:27,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20999 conditions, 5174 events. 3440/5174 cut-off events. For 21416/21528 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 27344 event pairs, 1452 based on Foata normal form. 22/4765 useless extension candidates. Maximal degree in co-relation 20849. Up to 3426 conditions per place. [2023-09-01 12:25:27,624 INFO L137 encePairwiseOnDemand]: 570/577 looper letters, 172 selfloop transitions, 21 changer transitions 8/202 dead transitions. [2023-09-01 12:25:27,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 202 transitions, 2235 flow [2023-09-01 12:25:27,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:25:27,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:25:27,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1360 transitions. [2023-09-01 12:25:27,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714038128249567 [2023-09-01 12:25:27,628 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1360 transitions. [2023-09-01 12:25:27,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1360 transitions. [2023-09-01 12:25:27,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:27,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1360 transitions. [2023-09-01 12:25:27,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 272.0) internal successors, (1360), 5 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:27,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:27,636 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:27,637 INFO L175 Difference]: Start difference. First operand has 93 places, 146 transitions, 1510 flow. Second operand 5 states and 1360 transitions. [2023-09-01 12:25:27,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 202 transitions, 2235 flow [2023-09-01 12:25:27,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 202 transitions, 2185 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-09-01 12:25:27,809 INFO L231 Difference]: Finished difference. Result has 93 places, 150 transitions, 1561 flow [2023-09-01 12:25:27,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1561, PETRI_PLACES=93, PETRI_TRANSITIONS=150} [2023-09-01 12:25:27,810 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 55 predicate places. [2023-09-01 12:25:27,810 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 150 transitions, 1561 flow [2023-09-01 12:25:27,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:27,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:27,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:27,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 12:25:27,812 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:27,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:27,812 INFO L85 PathProgramCache]: Analyzing trace with hash 13829410, now seen corresponding path program 1 times [2023-09-01 12:25:27,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:27,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561436079] [2023-09-01 12:25:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:27,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:28,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:25:28,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:28,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561436079] [2023-09-01 12:25:28,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561436079] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:28,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:28,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:28,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360439507] [2023-09-01 12:25:28,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:28,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 12:25:28,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:28,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 12:25:28,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 12:25:28,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 577 [2023-09-01 12:25:28,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 150 transitions, 1561 flow. Second operand has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:28,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:28,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 577 [2023-09-01 12:25:28,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:29,545 INFO L130 PetriNetUnfolder]: 6956/10082 cut-off events. [2023-09-01 12:25:29,545 INFO L131 PetriNetUnfolder]: For 40691/40998 co-relation queries the response was YES. [2023-09-01 12:25:29,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41216 conditions, 10082 events. 6956/10082 cut-off events. For 40691/40998 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 55263 event pairs, 3164 based on Foata normal form. 78/9261 useless extension candidates. Maximal degree in co-relation 40856. Up to 3341 conditions per place. [2023-09-01 12:25:29,624 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 236 selfloop transitions, 62 changer transitions 35/334 dead transitions. [2023-09-01 12:25:29,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 334 transitions, 3859 flow [2023-09-01 12:25:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:25:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:25:29,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2127 transitions. [2023-09-01 12:25:29,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46078856152513 [2023-09-01 12:25:29,630 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2127 transitions. [2023-09-01 12:25:29,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2127 transitions. [2023-09-01 12:25:29,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:29,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2127 transitions. [2023-09-01 12:25:29,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 265.875) internal successors, (2127), 8 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:29,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 577.0) internal successors, (5193), 9 states have internal predecessors, (5193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:29,640 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 577.0) internal successors, (5193), 9 states have internal predecessors, (5193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:29,641 INFO L175 Difference]: Start difference. First operand has 93 places, 150 transitions, 1561 flow. Second operand 8 states and 2127 transitions. [2023-09-01 12:25:29,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 334 transitions, 3859 flow [2023-09-01 12:25:30,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 334 transitions, 3798 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-09-01 12:25:30,108 INFO L231 Difference]: Finished difference. Result has 103 places, 188 transitions, 2106 flow [2023-09-01 12:25:30,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2106, PETRI_PLACES=103, PETRI_TRANSITIONS=188} [2023-09-01 12:25:30,109 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 65 predicate places. [2023-09-01 12:25:30,109 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 188 transitions, 2106 flow [2023-09-01 12:25:30,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:30,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:30,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:30,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 12:25:30,110 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:30,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:30,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1573728984, now seen corresponding path program 3 times [2023-09-01 12:25:30,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:30,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553037645] [2023-09-01 12:25:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:30,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:30,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:25:30,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:30,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553037645] [2023-09-01 12:25:30,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553037645] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:30,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:30,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:30,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485254593] [2023-09-01 12:25:30,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:30,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:30,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:30,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:30,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:30,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-09-01 12:25:30,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 188 transitions, 2106 flow. Second operand has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:30,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:30,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-09-01 12:25:30,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:31,656 INFO L130 PetriNetUnfolder]: 6383/9340 cut-off events. [2023-09-01 12:25:31,656 INFO L131 PetriNetUnfolder]: For 36473/36755 co-relation queries the response was YES. [2023-09-01 12:25:31,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39053 conditions, 9340 events. 6383/9340 cut-off events. For 36473/36755 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 51577 event pairs, 2077 based on Foata normal form. 54/8531 useless extension candidates. Maximal degree in co-relation 38552. Up to 3528 conditions per place. [2023-09-01 12:25:31,737 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 177 selfloop transitions, 73 changer transitions 15/266 dead transitions. [2023-09-01 12:25:31,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 266 transitions, 3105 flow [2023-09-01 12:25:31,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:25:31,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:25:31,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1639 transitions. [2023-09-01 12:25:31,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734257654534951 [2023-09-01 12:25:31,743 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1639 transitions. [2023-09-01 12:25:31,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1639 transitions. [2023-09-01 12:25:31,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:31,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1639 transitions. [2023-09-01 12:25:31,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 273.1666666666667) internal successors, (1639), 6 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:31,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:31,752 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:31,752 INFO L175 Difference]: Start difference. First operand has 103 places, 188 transitions, 2106 flow. Second operand 6 states and 1639 transitions. [2023-09-01 12:25:31,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 266 transitions, 3105 flow [2023-09-01 12:25:32,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 266 transitions, 2985 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-09-01 12:25:32,202 INFO L231 Difference]: Finished difference. Result has 108 places, 194 transitions, 2232 flow [2023-09-01 12:25:32,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2232, PETRI_PLACES=108, PETRI_TRANSITIONS=194} [2023-09-01 12:25:32,203 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 70 predicate places. [2023-09-01 12:25:32,203 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 194 transitions, 2232 flow [2023-09-01 12:25:32,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:32,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:32,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:32,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 12:25:32,205 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:32,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:32,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1440072976, now seen corresponding path program 4 times [2023-09-01 12:25:32,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:32,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075753739] [2023-09-01 12:25:32,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:32,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:32,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:25:32,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:32,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075753739] [2023-09-01 12:25:32,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075753739] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:32,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:32,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:32,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198547292] [2023-09-01 12:25:32,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:32,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:32,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:32,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:32,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:32,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 577 [2023-09-01 12:25:32,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 194 transitions, 2232 flow. Second operand has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:32,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:32,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 577 [2023-09-01 12:25:32,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:33,557 INFO L130 PetriNetUnfolder]: 6335/9250 cut-off events. [2023-09-01 12:25:33,557 INFO L131 PetriNetUnfolder]: For 45253/45535 co-relation queries the response was YES. [2023-09-01 12:25:33,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39110 conditions, 9250 events. 6335/9250 cut-off events. For 45253/45535 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 50805 event pairs, 2103 based on Foata normal form. 54/8503 useless extension candidates. Maximal degree in co-relation 38606. Up to 3528 conditions per place. [2023-09-01 12:25:33,639 INFO L137 encePairwiseOnDemand]: 568/577 looper letters, 167 selfloop transitions, 67 changer transitions 11/246 dead transitions. [2023-09-01 12:25:33,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 246 transitions, 2925 flow [2023-09-01 12:25:33,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:25:33,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:25:33,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1634 transitions. [2023-09-01 12:25:33,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4719815135759676 [2023-09-01 12:25:33,644 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1634 transitions. [2023-09-01 12:25:33,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1634 transitions. [2023-09-01 12:25:33,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:33,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1634 transitions. [2023-09-01 12:25:33,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 272.3333333333333) internal successors, (1634), 6 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) [2023-09-01 12:25:33,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:33,654 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:33,654 INFO L175 Difference]: Start difference. First operand has 108 places, 194 transitions, 2232 flow. Second operand 6 states and 1634 transitions. [2023-09-01 12:25:33,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 246 transitions, 2925 flow [2023-09-01 12:25:34,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 246 transitions, 2783 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-09-01 12:25:34,137 INFO L231 Difference]: Finished difference. Result has 112 places, 192 transitions, 2190 flow [2023-09-01 12:25:34,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2190, PETRI_PLACES=112, PETRI_TRANSITIONS=192} [2023-09-01 12:25:34,137 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 74 predicate places. [2023-09-01 12:25:34,138 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 192 transitions, 2190 flow [2023-09-01 12:25:34,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:34,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:34,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:34,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 12:25:34,139 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:34,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:34,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1968338174, now seen corresponding path program 5 times [2023-09-01 12:25:34,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:34,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083231984] [2023-09-01 12:25:34,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:34,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:25:34,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:34,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083231984] [2023-09-01 12:25:34,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083231984] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:34,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:34,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:34,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334707891] [2023-09-01 12:25:34,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:34,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:34,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:34,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:34,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:34,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 577 [2023-09-01 12:25:34,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 192 transitions, 2190 flow. Second operand has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:34,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:34,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 577 [2023-09-01 12:25:34,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:35,402 INFO L130 PetriNetUnfolder]: 6337/9274 cut-off events. [2023-09-01 12:25:35,402 INFO L131 PetriNetUnfolder]: For 43006/43264 co-relation queries the response was YES. [2023-09-01 12:25:35,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39225 conditions, 9274 events. 6337/9274 cut-off events. For 43006/43264 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 51365 event pairs, 1251 based on Foata normal form. 117/8578 useless extension candidates. Maximal degree in co-relation 39101. Up to 2572 conditions per place. [2023-09-01 12:25:35,466 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 192 selfloop transitions, 100 changer transitions 16/309 dead transitions. [2023-09-01 12:25:35,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 309 transitions, 3660 flow [2023-09-01 12:25:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:25:35,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:25:35,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1917 transitions. [2023-09-01 12:25:35,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47462243129487497 [2023-09-01 12:25:35,471 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1917 transitions. [2023-09-01 12:25:35,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1917 transitions. [2023-09-01 12:25:35,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:35,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1917 transitions. [2023-09-01 12:25:35,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.85714285714283) internal successors, (1917), 7 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:35,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:35,481 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:35,481 INFO L175 Difference]: Start difference. First operand has 112 places, 192 transitions, 2190 flow. Second operand 7 states and 1917 transitions. [2023-09-01 12:25:35,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 309 transitions, 3660 flow [2023-09-01 12:25:35,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 309 transitions, 3514 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-09-01 12:25:35,946 INFO L231 Difference]: Finished difference. Result has 113 places, 212 transitions, 2531 flow [2023-09-01 12:25:35,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2531, PETRI_PLACES=113, PETRI_TRANSITIONS=212} [2023-09-01 12:25:35,947 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 75 predicate places. [2023-09-01 12:25:35,947 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 212 transitions, 2531 flow [2023-09-01 12:25:35,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:35,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:35,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:35,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 12:25:35,948 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:35,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:35,949 INFO L85 PathProgramCache]: Analyzing trace with hash -59174180, now seen corresponding path program 6 times [2023-09-01 12:25:35,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:35,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821242842] [2023-09-01 12:25:35,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:35,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:25:36,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:36,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821242842] [2023-09-01 12:25:36,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821242842] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:36,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:36,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:36,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620444363] [2023-09-01 12:25:36,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:36,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:36,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:36,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:36,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:36,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 577 [2023-09-01 12:25:36,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 212 transitions, 2531 flow. Second operand has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:36,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:36,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 577 [2023-09-01 12:25:36,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:37,365 INFO L130 PetriNetUnfolder]: 6301/9208 cut-off events. [2023-09-01 12:25:37,365 INFO L131 PetriNetUnfolder]: For 46796/47128 co-relation queries the response was YES. [2023-09-01 12:25:37,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40085 conditions, 9208 events. 6301/9208 cut-off events. For 46796/47128 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 50770 event pairs, 1416 based on Foata normal form. 169/8558 useless extension candidates. Maximal degree in co-relation 38357. Up to 2860 conditions per place. [2023-09-01 12:25:37,415 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 199 selfloop transitions, 105 changer transitions 8/313 dead transitions. [2023-09-01 12:25:37,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 313 transitions, 3919 flow [2023-09-01 12:25:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:25:37,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:25:37,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1912 transitions. [2023-09-01 12:25:37,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47338450111413716 [2023-09-01 12:25:37,421 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1912 transitions. [2023-09-01 12:25:37,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1912 transitions. [2023-09-01 12:25:37,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:37,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1912 transitions. [2023-09-01 12:25:37,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.14285714285717) internal successors, (1912), 7 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:37,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:37,431 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:37,431 INFO L175 Difference]: Start difference. First operand has 113 places, 212 transitions, 2531 flow. Second operand 7 states and 1912 transitions. [2023-09-01 12:25:37,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 313 transitions, 3919 flow [2023-09-01 12:25:37,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 313 transitions, 3797 flow, removed 61 selfloop flow, removed 1 redundant places. [2023-09-01 12:25:37,850 INFO L231 Difference]: Finished difference. Result has 119 places, 234 transitions, 3029 flow [2023-09-01 12:25:37,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=2441, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3029, PETRI_PLACES=119, PETRI_TRANSITIONS=234} [2023-09-01 12:25:37,851 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 81 predicate places. [2023-09-01 12:25:37,851 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 234 transitions, 3029 flow [2023-09-01 12:25:37,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:37,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:37,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:37,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 12:25:37,852 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:37,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:37,853 INFO L85 PathProgramCache]: Analyzing trace with hash 854842974, now seen corresponding path program 1 times [2023-09-01 12:25:37,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:37,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280606448] [2023-09-01 12:25:37,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:37,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:25:37,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:37,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280606448] [2023-09-01 12:25:37,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280606448] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:37,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:37,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:37,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757869255] [2023-09-01 12:25:37,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:37,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:37,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:37,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:37,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:38,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 577 [2023-09-01 12:25:38,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 234 transitions, 3029 flow. Second operand has 5 states, 5 states have (on average 259.2) internal successors, (1296), 5 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:38,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:38,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 577 [2023-09-01 12:25:38,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:39,157 INFO L130 PetriNetUnfolder]: 6557/9869 cut-off events. [2023-09-01 12:25:39,157 INFO L131 PetriNetUnfolder]: For 65396/65412 co-relation queries the response was YES. [2023-09-01 12:25:39,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44130 conditions, 9869 events. 6557/9869 cut-off events. For 65396/65412 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 59122 event pairs, 1158 based on Foata normal form. 18/9057 useless extension candidates. Maximal degree in co-relation 42713. Up to 5492 conditions per place. [2023-09-01 12:25:39,223 INFO L137 encePairwiseOnDemand]: 571/577 looper letters, 286 selfloop transitions, 42 changer transitions 6/335 dead transitions. [2023-09-01 12:25:39,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 335 transitions, 4757 flow [2023-09-01 12:25:39,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:25:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:25:39,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1366 transitions. [2023-09-01 12:25:39,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734835355285962 [2023-09-01 12:25:39,227 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1366 transitions. [2023-09-01 12:25:39,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1366 transitions. [2023-09-01 12:25:39,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:39,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1366 transitions. [2023-09-01 12:25:39,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 273.2) internal successors, (1366), 5 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:39,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:39,235 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:39,236 INFO L175 Difference]: Start difference. First operand has 119 places, 234 transitions, 3029 flow. Second operand 5 states and 1366 transitions. [2023-09-01 12:25:39,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 335 transitions, 4757 flow [2023-09-01 12:25:39,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 335 transitions, 4595 flow, removed 81 selfloop flow, removed 0 redundant places. [2023-09-01 12:25:39,532 INFO L231 Difference]: Finished difference. Result has 124 places, 250 transitions, 3338 flow [2023-09-01 12:25:39,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=2871, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3338, PETRI_PLACES=124, PETRI_TRANSITIONS=250} [2023-09-01 12:25:39,532 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 86 predicate places. [2023-09-01 12:25:39,533 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 250 transitions, 3338 flow [2023-09-01 12:25:39,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 259.2) internal successors, (1296), 5 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:39,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:39,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:39,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 12:25:39,534 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:39,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:39,534 INFO L85 PathProgramCache]: Analyzing trace with hash 642706158, now seen corresponding path program 2 times [2023-09-01 12:25:39,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:39,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35476087] [2023-09-01 12:25:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:39,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:25:39,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:39,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35476087] [2023-09-01 12:25:39,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35476087] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:39,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:39,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:39,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277666536] [2023-09-01 12:25:39,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:39,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:39,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:39,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:39,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:39,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-09-01 12:25:39,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 250 transitions, 3338 flow. Second operand has 5 states, 5 states have (on average 258.2) internal successors, (1291), 5 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:39,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:39,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-09-01 12:25:39,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:41,147 INFO L130 PetriNetUnfolder]: 6513/9608 cut-off events. [2023-09-01 12:25:41,147 INFO L131 PetriNetUnfolder]: For 69350/69612 co-relation queries the response was YES. [2023-09-01 12:25:41,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43939 conditions, 9608 events. 6513/9608 cut-off events. For 69350/69612 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 54157 event pairs, 3196 based on Foata normal form. 34/8793 useless extension candidates. Maximal degree in co-relation 42516. Up to 7474 conditions per place. [2023-09-01 12:25:41,226 INFO L137 encePairwiseOnDemand]: 571/577 looper letters, 246 selfloop transitions, 54 changer transitions 6/307 dead transitions. [2023-09-01 12:25:41,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 307 transitions, 4334 flow [2023-09-01 12:25:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:25:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:25:41,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1361 transitions. [2023-09-01 12:25:41,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47175043327556326 [2023-09-01 12:25:41,229 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1361 transitions. [2023-09-01 12:25:41,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1361 transitions. [2023-09-01 12:25:41,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:41,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1361 transitions. [2023-09-01 12:25:41,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 272.2) internal successors, (1361), 5 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:41,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:41,237 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:41,237 INFO L175 Difference]: Start difference. First operand has 124 places, 250 transitions, 3338 flow. Second operand 5 states and 1361 transitions. [2023-09-01 12:25:41,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 307 transitions, 4334 flow [2023-09-01 12:25:41,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 307 transitions, 4312 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 12:25:41,625 INFO L231 Difference]: Finished difference. Result has 130 places, 254 transitions, 3582 flow [2023-09-01 12:25:41,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=3322, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3582, PETRI_PLACES=130, PETRI_TRANSITIONS=254} [2023-09-01 12:25:41,626 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 92 predicate places. [2023-09-01 12:25:41,626 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 254 transitions, 3582 flow [2023-09-01 12:25:41,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 258.2) internal successors, (1291), 5 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:41,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:41,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:41,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 12:25:41,627 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:41,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:41,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1298038294, now seen corresponding path program 3 times [2023-09-01 12:25:41,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:41,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706157109] [2023-09-01 12:25:41,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:41,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:41,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:25:41,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:41,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706157109] [2023-09-01 12:25:41,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706157109] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:41,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:41,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:41,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810556279] [2023-09-01 12:25:41,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:41,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:41,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:41,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:41,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:41,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-09-01 12:25:41,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 254 transitions, 3582 flow. Second operand has 5 states, 5 states have (on average 258.2) internal successors, (1291), 5 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:41,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:41,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-09-01 12:25:41,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:43,096 INFO L130 PetriNetUnfolder]: 6449/9494 cut-off events. [2023-09-01 12:25:43,096 INFO L131 PetriNetUnfolder]: For 72494/72846 co-relation queries the response was YES. [2023-09-01 12:25:43,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44264 conditions, 9494 events. 6449/9494 cut-off events. For 72494/72846 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 53288 event pairs, 1748 based on Foata normal form. 161/8816 useless extension candidates. Maximal degree in co-relation 42792. Up to 3961 conditions per place. [2023-09-01 12:25:43,157 INFO L137 encePairwiseOnDemand]: 568/577 looper letters, 228 selfloop transitions, 92 changer transitions 7/328 dead transitions. [2023-09-01 12:25:43,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 328 transitions, 4666 flow [2023-09-01 12:25:43,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:25:43,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:25:43,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1634 transitions. [2023-09-01 12:25:43,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4719815135759676 [2023-09-01 12:25:43,161 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1634 transitions. [2023-09-01 12:25:43,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1634 transitions. [2023-09-01 12:25:43,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:43,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1634 transitions. [2023-09-01 12:25:43,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 272.3333333333333) internal successors, (1634), 6 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) [2023-09-01 12:25:43,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:43,167 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:43,167 INFO L175 Difference]: Start difference. First operand has 130 places, 254 transitions, 3582 flow. Second operand 6 states and 1634 transitions. [2023-09-01 12:25:43,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 328 transitions, 4666 flow [2023-09-01 12:25:43,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 328 transitions, 4618 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 12:25:43,554 INFO L231 Difference]: Finished difference. Result has 136 places, 269 transitions, 3976 flow [2023-09-01 12:25:43,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=3536, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3976, PETRI_PLACES=136, PETRI_TRANSITIONS=269} [2023-09-01 12:25:43,555 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 98 predicate places. [2023-09-01 12:25:43,555 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 269 transitions, 3976 flow [2023-09-01 12:25:43,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 258.2) internal successors, (1291), 5 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:43,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:43,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:43,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 12:25:43,556 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:43,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:43,556 INFO L85 PathProgramCache]: Analyzing trace with hash 283388168, now seen corresponding path program 4 times [2023-09-01 12:25:43,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:43,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390816902] [2023-09-01 12:25:43,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:43,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:43,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:25:43,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:43,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390816902] [2023-09-01 12:25:43,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390816902] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:43,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:43,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:43,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049257815] [2023-09-01 12:25:43,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:43,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:43,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:43,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:43,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:43,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-09-01 12:25:43,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 269 transitions, 3976 flow. Second operand has 5 states, 5 states have (on average 258.2) internal successors, (1291), 5 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:43,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:43,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-09-01 12:25:43,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:45,200 INFO L130 PetriNetUnfolder]: 7887/12051 cut-off events. [2023-09-01 12:25:45,200 INFO L131 PetriNetUnfolder]: For 98561/98621 co-relation queries the response was YES. [2023-09-01 12:25:45,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57310 conditions, 12051 events. 7887/12051 cut-off events. For 98561/98621 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 76442 event pairs, 628 based on Foata normal form. 32/11005 useless extension candidates. Maximal degree in co-relation 56268. Up to 4362 conditions per place. [2023-09-01 12:25:45,288 INFO L137 encePairwiseOnDemand]: 570/577 looper letters, 388 selfloop transitions, 60 changer transitions 10/459 dead transitions. [2023-09-01 12:25:45,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 459 transitions, 7090 flow [2023-09-01 12:25:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:25:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:25:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1646 transitions. [2023-09-01 12:25:45,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4754477180820335 [2023-09-01 12:25:45,291 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1646 transitions. [2023-09-01 12:25:45,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1646 transitions. [2023-09-01 12:25:45,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:45,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1646 transitions. [2023-09-01 12:25:45,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 274.3333333333333) internal successors, (1646), 6 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:45,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:45,297 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:45,297 INFO L175 Difference]: Start difference. First operand has 136 places, 269 transitions, 3976 flow. Second operand 6 states and 1646 transitions. [2023-09-01 12:25:45,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 459 transitions, 7090 flow [2023-09-01 12:25:45,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 459 transitions, 6912 flow, removed 27 selfloop flow, removed 3 redundant places. [2023-09-01 12:25:45,824 INFO L231 Difference]: Finished difference. Result has 142 places, 294 transitions, 4499 flow [2023-09-01 12:25:45,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=3838, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4499, PETRI_PLACES=142, PETRI_TRANSITIONS=294} [2023-09-01 12:25:45,825 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 104 predicate places. [2023-09-01 12:25:45,825 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 294 transitions, 4499 flow [2023-09-01 12:25:45,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 258.2) internal successors, (1291), 5 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:45,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:45,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:45,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 12:25:45,826 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:45,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:45,826 INFO L85 PathProgramCache]: Analyzing trace with hash 756027848, now seen corresponding path program 5 times [2023-09-01 12:25:45,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:45,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784693146] [2023-09-01 12:25:45,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:45,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:45,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:25:45,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:45,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784693146] [2023-09-01 12:25:45,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784693146] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:45,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:45,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:45,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651133536] [2023-09-01 12:25:45,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:45,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:45,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:45,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:45,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:46,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-09-01 12:25:46,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 294 transitions, 4499 flow. Second operand has 5 states, 5 states have (on average 258.2) internal successors, (1291), 5 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:46,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:46,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-09-01 12:25:46,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:47,636 INFO L130 PetriNetUnfolder]: 8159/12278 cut-off events. [2023-09-01 12:25:47,636 INFO L131 PetriNetUnfolder]: For 104931/105169 co-relation queries the response was YES. [2023-09-01 12:25:47,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60457 conditions, 12278 events. 8159/12278 cut-off events. For 104931/105169 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 75237 event pairs, 533 based on Foata normal form. 220/11335 useless extension candidates. Maximal degree in co-relation 59078. Up to 2646 conditions per place. [2023-09-01 12:25:47,729 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 326 selfloop transitions, 135 changer transitions 10/472 dead transitions. [2023-09-01 12:25:47,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 472 transitions, 7012 flow [2023-09-01 12:25:47,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:25:47,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:25:47,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2467 transitions. [2023-09-01 12:25:47,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47506258424802617 [2023-09-01 12:25:47,732 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2467 transitions. [2023-09-01 12:25:47,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2467 transitions. [2023-09-01 12:25:47,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:47,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2467 transitions. [2023-09-01 12:25:47,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 274.1111111111111) internal successors, (2467), 9 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:47,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 577.0) internal successors, (5770), 10 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:47,740 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 577.0) internal successors, (5770), 10 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:47,740 INFO L175 Difference]: Start difference. First operand has 142 places, 294 transitions, 4499 flow. Second operand 9 states and 2467 transitions. [2023-09-01 12:25:47,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 472 transitions, 7012 flow [2023-09-01 12:25:48,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 472 transitions, 6920 flow, removed 46 selfloop flow, removed 0 redundant places. [2023-09-01 12:25:48,547 INFO L231 Difference]: Finished difference. Result has 155 places, 303 transitions, 5014 flow [2023-09-01 12:25:48,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=4473, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5014, PETRI_PLACES=155, PETRI_TRANSITIONS=303} [2023-09-01 12:25:48,548 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 117 predicate places. [2023-09-01 12:25:48,548 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 303 transitions, 5014 flow [2023-09-01 12:25:48,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 258.2) internal successors, (1291), 5 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:48,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:48,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:48,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 12:25:48,548 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:48,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:48,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1833268096, now seen corresponding path program 6 times [2023-09-01 12:25:48,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:48,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628719829] [2023-09-01 12:25:48,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:48,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:48,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:25:48,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:48,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628719829] [2023-09-01 12:25:48,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628719829] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:48,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:48,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:48,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214759082] [2023-09-01 12:25:48,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:48,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:48,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:48,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:48,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:48,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 577 [2023-09-01 12:25:48,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 303 transitions, 5014 flow. Second operand has 5 states, 5 states have (on average 259.2) internal successors, (1296), 5 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:48,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:48,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 577 [2023-09-01 12:25:48,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:50,290 INFO L130 PetriNetUnfolder]: 8091/12156 cut-off events. [2023-09-01 12:25:50,290 INFO L131 PetriNetUnfolder]: For 117775/117984 co-relation queries the response was YES. [2023-09-01 12:25:50,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62520 conditions, 12156 events. 8091/12156 cut-off events. For 117775/117984 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 73720 event pairs, 1059 based on Foata normal form. 178/11167 useless extension candidates. Maximal degree in co-relation 61082. Up to 4014 conditions per place. [2023-09-01 12:25:50,391 INFO L137 encePairwiseOnDemand]: 568/577 looper letters, 235 selfloop transitions, 119 changer transitions 9/364 dead transitions. [2023-09-01 12:25:50,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 364 transitions, 6026 flow [2023-09-01 12:25:50,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:25:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:25:50,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1649 transitions. [2023-09-01 12:25:50,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47631426920854997 [2023-09-01 12:25:50,393 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1649 transitions. [2023-09-01 12:25:50,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1649 transitions. [2023-09-01 12:25:50,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:50,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1649 transitions. [2023-09-01 12:25:50,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 274.8333333333333) internal successors, (1649), 6 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:50,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:50,398 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:50,398 INFO L175 Difference]: Start difference. First operand has 155 places, 303 transitions, 5014 flow. Second operand 6 states and 1649 transitions. [2023-09-01 12:25:50,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 364 transitions, 6026 flow [2023-09-01 12:25:51,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 364 transitions, 5872 flow, removed 57 selfloop flow, removed 1 redundant places. [2023-09-01 12:25:51,412 INFO L231 Difference]: Finished difference. Result has 160 places, 295 transitions, 5016 flow [2023-09-01 12:25:51,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=4862, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5016, PETRI_PLACES=160, PETRI_TRANSITIONS=295} [2023-09-01 12:25:51,413 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 122 predicate places. [2023-09-01 12:25:51,413 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 295 transitions, 5016 flow [2023-09-01 12:25:51,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 259.2) internal successors, (1296), 5 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:51,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:51,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:51,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 12:25:51,413 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:51,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:51,414 INFO L85 PathProgramCache]: Analyzing trace with hash 131615909, now seen corresponding path program 1 times [2023-09-01 12:25:51,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:51,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261695653] [2023-09-01 12:25:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:51,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:25:51,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:51,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261695653] [2023-09-01 12:25:51,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261695653] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:51,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:51,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:51,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905147834] [2023-09-01 12:25:51,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:51,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:51,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:51,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:51,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:51,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 577 [2023-09-01 12:25:51,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 295 transitions, 5016 flow. Second operand has 5 states, 5 states have (on average 259.2) internal successors, (1296), 5 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:51,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:51,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 577 [2023-09-01 12:25:51,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:53,291 INFO L130 PetriNetUnfolder]: 8453/12825 cut-off events. [2023-09-01 12:25:53,292 INFO L131 PetriNetUnfolder]: For 138600/138640 co-relation queries the response was YES. [2023-09-01 12:25:53,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66967 conditions, 12825 events. 8453/12825 cut-off events. For 138600/138640 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 80173 event pairs, 1517 based on Foata normal form. 2/11627 useless extension candidates. Maximal degree in co-relation 65501. Up to 4230 conditions per place. [2023-09-01 12:25:53,393 INFO L137 encePairwiseOnDemand]: 568/577 looper letters, 291 selfloop transitions, 118 changer transitions 7/417 dead transitions. [2023-09-01 12:25:53,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 417 transitions, 7121 flow [2023-09-01 12:25:53,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:25:53,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:25:53,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1913 transitions. [2023-09-01 12:25:53,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4736320871502847 [2023-09-01 12:25:53,396 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1913 transitions. [2023-09-01 12:25:53,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1913 transitions. [2023-09-01 12:25:53,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:53,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1913 transitions. [2023-09-01 12:25:53,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.2857142857143) internal successors, (1913), 7 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:53,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:53,402 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:53,402 INFO L175 Difference]: Start difference. First operand has 160 places, 295 transitions, 5016 flow. Second operand 7 states and 1913 transitions. [2023-09-01 12:25:53,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 417 transitions, 7121 flow [2023-09-01 12:25:54,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 417 transitions, 6857 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-09-01 12:25:54,402 INFO L231 Difference]: Finished difference. Result has 165 places, 325 transitions, 5624 flow [2023-09-01 12:25:54,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=4781, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5624, PETRI_PLACES=165, PETRI_TRANSITIONS=325} [2023-09-01 12:25:54,402 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 127 predicate places. [2023-09-01 12:25:54,403 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 325 transitions, 5624 flow [2023-09-01 12:25:54,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 259.2) internal successors, (1296), 5 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:54,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:54,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:54,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 12:25:54,403 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:54,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:54,403 INFO L85 PathProgramCache]: Analyzing trace with hash 80818935, now seen corresponding path program 2 times [2023-09-01 12:25:54,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:54,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106261111] [2023-09-01 12:25:54,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:54,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:25:54,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:54,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106261111] [2023-09-01 12:25:54,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106261111] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:54,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:54,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:54,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021859998] [2023-09-01 12:25:54,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:54,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:54,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:54,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:54,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:54,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-09-01 12:25:54,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 325 transitions, 5624 flow. Second operand has 5 states, 5 states have (on average 258.2) internal successors, (1291), 5 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:54,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:54,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-09-01 12:25:54,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:25:56,703 INFO L130 PetriNetUnfolder]: 9959/15297 cut-off events. [2023-09-01 12:25:56,703 INFO L131 PetriNetUnfolder]: For 148588/148648 co-relation queries the response was YES. [2023-09-01 12:25:56,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78488 conditions, 15297 events. 9959/15297 cut-off events. For 148588/148648 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 100431 event pairs, 489 based on Foata normal form. 32/13829 useless extension candidates. Maximal degree in co-relation 76639. Up to 4654 conditions per place. [2023-09-01 12:25:56,842 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 363 selfloop transitions, 139 changer transitions 9/512 dead transitions. [2023-09-01 12:25:56,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 512 transitions, 8601 flow [2023-09-01 12:25:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:25:56,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:25:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2464 transitions. [2023-09-01 12:25:56,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47448488349701523 [2023-09-01 12:25:56,846 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2464 transitions. [2023-09-01 12:25:56,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2464 transitions. [2023-09-01 12:25:56,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:25:56,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2464 transitions. [2023-09-01 12:25:56,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 273.77777777777777) internal successors, (2464), 9 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:56,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 577.0) internal successors, (5770), 10 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:56,851 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 577.0) internal successors, (5770), 10 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:56,852 INFO L175 Difference]: Start difference. First operand has 165 places, 325 transitions, 5624 flow. Second operand 9 states and 2464 transitions. [2023-09-01 12:25:56,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 512 transitions, 8601 flow [2023-09-01 12:25:58,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 512 transitions, 8455 flow, removed 36 selfloop flow, removed 3 redundant places. [2023-09-01 12:25:58,249 INFO L231 Difference]: Finished difference. Result has 174 places, 349 transitions, 6398 flow [2023-09-01 12:25:58,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=5517, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6398, PETRI_PLACES=174, PETRI_TRANSITIONS=349} [2023-09-01 12:25:58,250 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 136 predicate places. [2023-09-01 12:25:58,250 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 349 transitions, 6398 flow [2023-09-01 12:25:58,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 258.2) internal successors, (1291), 5 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:58,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:25:58,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:25:58,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-09-01 12:25:58,251 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:25:58,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:25:58,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1904587171, now seen corresponding path program 3 times [2023-09-01 12:25:58,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:25:58,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527791888] [2023-09-01 12:25:58,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:25:58,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:25:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:25:58,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:25:58,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:25:58,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527791888] [2023-09-01 12:25:58,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527791888] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:25:58,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:25:58,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:25:58,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130101217] [2023-09-01 12:25:58,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:25:58,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:25:58,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:25:58,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:25:58,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:25:58,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-09-01 12:25:58,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 349 transitions, 6398 flow. Second operand has 5 states, 5 states have (on average 258.2) internal successors, (1291), 5 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:25:58,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:25:58,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-09-01 12:25:58,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:00,622 INFO L130 PetriNetUnfolder]: 9879/15110 cut-off events. [2023-09-01 12:26:00,622 INFO L131 PetriNetUnfolder]: For 173146/173186 co-relation queries the response was YES. [2023-09-01 12:26:00,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81278 conditions, 15110 events. 9879/15110 cut-off events. For 173146/173186 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 98409 event pairs, 2373 based on Foata normal form. 2/13601 useless extension candidates. Maximal degree in co-relation 79525. Up to 5816 conditions per place. [2023-09-01 12:26:00,722 INFO L137 encePairwiseOnDemand]: 568/577 looper letters, 305 selfloop transitions, 114 changer transitions 7/427 dead transitions. [2023-09-01 12:26:00,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 427 transitions, 7704 flow [2023-09-01 12:26:00,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:26:00,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:26:00,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1905 transitions. [2023-09-01 12:26:00,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47165139886110424 [2023-09-01 12:26:00,724 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1905 transitions. [2023-09-01 12:26:00,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1905 transitions. [2023-09-01 12:26:00,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:00,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1905 transitions. [2023-09-01 12:26:00,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:00,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:00,728 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:00,728 INFO L175 Difference]: Start difference. First operand has 174 places, 349 transitions, 6398 flow. Second operand 7 states and 1905 transitions. [2023-09-01 12:26:00,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 427 transitions, 7704 flow [2023-09-01 12:26:02,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 427 transitions, 7464 flow, removed 43 selfloop flow, removed 6 redundant places. [2023-09-01 12:26:02,267 INFO L231 Difference]: Finished difference. Result has 175 places, 347 transitions, 6347 flow [2023-09-01 12:26:02,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=6162, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6347, PETRI_PLACES=175, PETRI_TRANSITIONS=347} [2023-09-01 12:26:02,268 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 137 predicate places. [2023-09-01 12:26:02,268 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 347 transitions, 6347 flow [2023-09-01 12:26:02,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 258.2) internal successors, (1291), 5 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:02,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:02,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:26:02,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-09-01 12:26:02,269 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:02,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:02,269 INFO L85 PathProgramCache]: Analyzing trace with hash -682005771, now seen corresponding path program 4 times [2023-09-01 12:26:02,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:02,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394828924] [2023-09-01 12:26:02,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:02,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:02,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:02,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:02,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394828924] [2023-09-01 12:26:02,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394828924] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:02,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:26:02,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:26:02,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582100515] [2023-09-01 12:26:02,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:02,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:26:02,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:02,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:26:02,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:26:02,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-09-01 12:26:02,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 347 transitions, 6347 flow. Second operand has 5 states, 5 states have (on average 258.2) internal successors, (1291), 5 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:02,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:02,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-09-01 12:26:02,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:04,337 INFO L130 PetriNetUnfolder]: 9795/14976 cut-off events. [2023-09-01 12:26:04,337 INFO L131 PetriNetUnfolder]: For 167056/167096 co-relation queries the response was YES. [2023-09-01 12:26:04,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80289 conditions, 14976 events. 9795/14976 cut-off events. For 167056/167096 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 97696 event pairs, 4087 based on Foata normal form. 2/13477 useless extension candidates. Maximal degree in co-relation 78344. Up to 11523 conditions per place. [2023-09-01 12:26:04,465 INFO L137 encePairwiseOnDemand]: 571/577 looper letters, 337 selfloop transitions, 41 changer transitions 7/386 dead transitions. [2023-09-01 12:26:04,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 386 transitions, 7291 flow [2023-09-01 12:26:04,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:26:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:26:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1357 transitions. [2023-09-01 12:26:04,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4703639514731369 [2023-09-01 12:26:04,467 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1357 transitions. [2023-09-01 12:26:04,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1357 transitions. [2023-09-01 12:26:04,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:04,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1357 transitions. [2023-09-01 12:26:04,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 271.4) internal successors, (1357), 5 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:04,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:04,470 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:04,470 INFO L175 Difference]: Start difference. First operand has 175 places, 347 transitions, 6347 flow. Second operand 5 states and 1357 transitions. [2023-09-01 12:26:04,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 386 transitions, 7291 flow [2023-09-01 12:26:06,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 386 transitions, 7093 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-09-01 12:26:06,155 INFO L231 Difference]: Finished difference. Result has 176 places, 341 transitions, 6169 flow [2023-09-01 12:26:06,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=6151, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6169, PETRI_PLACES=176, PETRI_TRANSITIONS=341} [2023-09-01 12:26:06,156 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 138 predicate places. [2023-09-01 12:26:06,156 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 341 transitions, 6169 flow [2023-09-01 12:26:06,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 258.2) internal successors, (1291), 5 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:06,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:06,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:26:06,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-09-01 12:26:06,157 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:06,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:06,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1818172119, now seen corresponding path program 5 times [2023-09-01 12:26:06,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:06,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533812666] [2023-09-01 12:26:06,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:06,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:06,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:06,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:06,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533812666] [2023-09-01 12:26:06,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533812666] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:06,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:26:06,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:26:06,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961658262] [2023-09-01 12:26:06,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:06,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:26:06,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:06,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:26:06,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:26:06,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-09-01 12:26:06,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 341 transitions, 6169 flow. Second operand has 5 states, 5 states have (on average 258.2) internal successors, (1291), 5 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:06,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:06,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-09-01 12:26:06,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:08,564 INFO L130 PetriNetUnfolder]: 11230/16980 cut-off events. [2023-09-01 12:26:08,564 INFO L131 PetriNetUnfolder]: For 167599/167819 co-relation queries the response was YES. [2023-09-01 12:26:08,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89532 conditions, 16980 events. 11230/16980 cut-off events. For 167599/167819 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 109985 event pairs, 578 based on Foata normal form. 162/15412 useless extension candidates. Maximal degree in co-relation 87838. Up to 4031 conditions per place. [2023-09-01 12:26:08,723 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 364 selfloop transitions, 161 changer transitions 9/535 dead transitions. [2023-09-01 12:26:08,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 535 transitions, 9069 flow [2023-09-01 12:26:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:26:08,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:26:08,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2476 transitions. [2023-09-01 12:26:08,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47679568650105913 [2023-09-01 12:26:08,726 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2476 transitions. [2023-09-01 12:26:08,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2476 transitions. [2023-09-01 12:26:08,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:08,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2476 transitions. [2023-09-01 12:26:08,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 275.1111111111111) internal successors, (2476), 9 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:08,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 577.0) internal successors, (5770), 10 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:08,732 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 577.0) internal successors, (5770), 10 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:08,732 INFO L175 Difference]: Start difference. First operand has 176 places, 341 transitions, 6169 flow. Second operand 9 states and 2476 transitions. [2023-09-01 12:26:08,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 535 transitions, 9069 flow [2023-09-01 12:26:10,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 535 transitions, 8872 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-09-01 12:26:10,795 INFO L231 Difference]: Finished difference. Result has 184 places, 352 transitions, 6716 flow [2023-09-01 12:26:10,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=5990, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6716, PETRI_PLACES=184, PETRI_TRANSITIONS=352} [2023-09-01 12:26:10,795 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 146 predicate places. [2023-09-01 12:26:10,795 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 352 transitions, 6716 flow [2023-09-01 12:26:10,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 258.2) internal successors, (1291), 5 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:10,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:10,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:26:10,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-09-01 12:26:10,796 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:10,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:10,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1469416541, now seen corresponding path program 6 times [2023-09-01 12:26:10,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:10,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874050440] [2023-09-01 12:26:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:10,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:10,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:10,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:10,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874050440] [2023-09-01 12:26:10,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874050440] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:10,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:26:10,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:26:10,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302566623] [2023-09-01 12:26:10,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:10,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:26:10,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:10,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:26:10,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:26:10,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 577 [2023-09-01 12:26:10,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 352 transitions, 6716 flow. Second operand has 5 states, 5 states have (on average 259.2) internal successors, (1296), 5 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:10,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:10,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 577 [2023-09-01 12:26:10,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:13,091 INFO L130 PetriNetUnfolder]: 11150/16888 cut-off events. [2023-09-01 12:26:13,091 INFO L131 PetriNetUnfolder]: For 194768/194808 co-relation queries the response was YES. [2023-09-01 12:26:13,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92204 conditions, 16888 events. 11150/16888 cut-off events. For 194768/194808 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 109110 event pairs, 1635 based on Foata normal form. 32/15157 useless extension candidates. Maximal degree in co-relation 90233. Up to 6892 conditions per place. [2023-09-01 12:26:13,255 INFO L137 encePairwiseOnDemand]: 568/577 looper letters, 266 selfloop transitions, 131 changer transitions 8/406 dead transitions. [2023-09-01 12:26:13,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 406 transitions, 7731 flow [2023-09-01 12:26:13,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:26:13,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:26:13,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1650 transitions. [2023-09-01 12:26:13,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47660311958405543 [2023-09-01 12:26:13,257 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1650 transitions. [2023-09-01 12:26:13,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1650 transitions. [2023-09-01 12:26:13,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:13,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1650 transitions. [2023-09-01 12:26:13,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:13,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:13,262 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:13,262 INFO L175 Difference]: Start difference. First operand has 184 places, 352 transitions, 6716 flow. Second operand 6 states and 1650 transitions. [2023-09-01 12:26:13,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 406 transitions, 7731 flow [2023-09-01 12:26:16,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 406 transitions, 7398 flow, removed 66 selfloop flow, removed 5 redundant places. [2023-09-01 12:26:16,237 INFO L231 Difference]: Finished difference. Result has 185 places, 345 transitions, 6624 flow [2023-09-01 12:26:16,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=6393, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6624, PETRI_PLACES=185, PETRI_TRANSITIONS=345} [2023-09-01 12:26:16,238 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 147 predicate places. [2023-09-01 12:26:16,238 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 345 transitions, 6624 flow [2023-09-01 12:26:16,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 259.2) internal successors, (1296), 5 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:16,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:16,239 INFO L208 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] [2023-09-01 12:26:16,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-09-01 12:26:16,239 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:16,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:16,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1605622237, now seen corresponding path program 1 times [2023-09-01 12:26:16,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:16,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660823612] [2023-09-01 12:26:16,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:16,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:16,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:16,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660823612] [2023-09-01 12:26:16,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660823612] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:16,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:26:16,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:26:16,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065552035] [2023-09-01 12:26:16,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:16,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:26:16,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:16,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:26:16,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:26:16,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 577 [2023-09-01 12:26:16,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 345 transitions, 6624 flow. Second operand has 4 states, 4 states have (on average 265.5) internal successors, (1062), 4 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:16,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:16,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 577 [2023-09-01 12:26:16,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:18,556 INFO L130 PetriNetUnfolder]: 10897/16469 cut-off events. [2023-09-01 12:26:18,556 INFO L131 PetriNetUnfolder]: For 196656/196728 co-relation queries the response was YES. [2023-09-01 12:26:18,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90794 conditions, 16469 events. 10897/16469 cut-off events. For 196656/196728 co-relation queries the response was YES. Maximal size of possible extension queue 914. Compared 106633 event pairs, 4059 based on Foata normal form. 115/14850 useless extension candidates. Maximal degree in co-relation 89203. Up to 11167 conditions per place. [2023-09-01 12:26:18,670 INFO L137 encePairwiseOnDemand]: 572/577 looper letters, 335 selfloop transitions, 58 changer transitions 12/406 dead transitions. [2023-09-01 12:26:18,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 406 transitions, 7659 flow [2023-09-01 12:26:18,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:26:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:26:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1402 transitions. [2023-09-01 12:26:18,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48596187175043326 [2023-09-01 12:26:18,672 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1402 transitions. [2023-09-01 12:26:18,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1402 transitions. [2023-09-01 12:26:18,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:18,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1402 transitions. [2023-09-01 12:26:18,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 280.4) internal successors, (1402), 5 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:18,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:18,676 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:18,676 INFO L175 Difference]: Start difference. First operand has 185 places, 345 transitions, 6624 flow. Second operand 5 states and 1402 transitions. [2023-09-01 12:26:18,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 406 transitions, 7659 flow [2023-09-01 12:26:20,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 406 transitions, 7357 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-09-01 12:26:20,614 INFO L231 Difference]: Finished difference. Result has 184 places, 336 transitions, 6250 flow [2023-09-01 12:26:20,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=6186, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6250, PETRI_PLACES=184, PETRI_TRANSITIONS=336} [2023-09-01 12:26:20,615 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 146 predicate places. [2023-09-01 12:26:20,615 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 336 transitions, 6250 flow [2023-09-01 12:26:20,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.5) internal successors, (1062), 4 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:20,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:20,615 INFO L208 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] [2023-09-01 12:26:20,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-09-01 12:26:20,616 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:20,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:20,617 INFO L85 PathProgramCache]: Analyzing trace with hash 850364479, now seen corresponding path program 2 times [2023-09-01 12:26:20,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:20,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630642050] [2023-09-01 12:26:20,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:20,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:20,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:20,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630642050] [2023-09-01 12:26:20,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630642050] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:20,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:26:20,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:26:20,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436882110] [2023-09-01 12:26:20,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:20,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:26:20,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:20,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:26:20,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:26:20,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 577 [2023-09-01 12:26:20,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 336 transitions, 6250 flow. Second operand has 4 states, 4 states have (on average 265.5) internal successors, (1062), 4 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:20,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:20,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 577 [2023-09-01 12:26:20,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:22,754 INFO L130 PetriNetUnfolder]: 10411/15584 cut-off events. [2023-09-01 12:26:22,754 INFO L131 PetriNetUnfolder]: For 169053/169125 co-relation queries the response was YES. [2023-09-01 12:26:22,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84588 conditions, 15584 events. 10411/15584 cut-off events. For 169053/169125 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 98281 event pairs, 4281 based on Foata normal form. 56/13982 useless extension candidates. Maximal degree in co-relation 84536. Up to 11437 conditions per place. [2023-09-01 12:26:22,868 INFO L137 encePairwiseOnDemand]: 572/577 looper letters, 302 selfloop transitions, 58 changer transitions 9/370 dead transitions. [2023-09-01 12:26:22,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 370 transitions, 6861 flow [2023-09-01 12:26:22,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:26:22,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:26:22,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1399 transitions. [2023-09-01 12:26:22,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48492201039861355 [2023-09-01 12:26:22,870 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1399 transitions. [2023-09-01 12:26:22,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1399 transitions. [2023-09-01 12:26:22,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:22,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1399 transitions. [2023-09-01 12:26:22,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 279.8) internal successors, (1399), 5 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:22,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:22,872 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:22,873 INFO L175 Difference]: Start difference. First operand has 184 places, 336 transitions, 6250 flow. Second operand 5 states and 1399 transitions. [2023-09-01 12:26:22,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 370 transitions, 6861 flow [2023-09-01 12:26:24,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 370 transitions, 6668 flow, removed 37 selfloop flow, removed 9 redundant places. [2023-09-01 12:26:24,534 INFO L231 Difference]: Finished difference. Result has 173 places, 305 transitions, 5571 flow [2023-09-01 12:26:24,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=5611, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5571, PETRI_PLACES=173, PETRI_TRANSITIONS=305} [2023-09-01 12:26:24,534 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 135 predicate places. [2023-09-01 12:26:24,534 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 305 transitions, 5571 flow [2023-09-01 12:26:24,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.5) internal successors, (1062), 4 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:24,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:24,535 INFO L208 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] [2023-09-01 12:26:24,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-09-01 12:26:24,535 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:24,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:24,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1976073599, now seen corresponding path program 3 times [2023-09-01 12:26:24,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:24,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256223627] [2023-09-01 12:26:24,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:24,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:24,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:24,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256223627] [2023-09-01 12:26:24,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256223627] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:24,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:26:24,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:26:24,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334661470] [2023-09-01 12:26:24,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:24,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:26:24,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:24,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:26:24,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:26:24,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 577 [2023-09-01 12:26:24,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 305 transitions, 5571 flow. Second operand has 4 states, 4 states have (on average 264.5) internal successors, (1058), 4 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:24,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:24,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 577 [2023-09-01 12:26:24,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:26,192 INFO L130 PetriNetUnfolder]: 9959/14938 cut-off events. [2023-09-01 12:26:26,192 INFO L131 PetriNetUnfolder]: For 154976/155084 co-relation queries the response was YES. [2023-09-01 12:26:26,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79755 conditions, 14938 events. 9959/14938 cut-off events. For 154976/155084 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 94348 event pairs, 1999 based on Foata normal form. 138/13494 useless extension candidates. Maximal degree in co-relation 79707. Up to 9520 conditions per place. [2023-09-01 12:26:26,316 INFO L137 encePairwiseOnDemand]: 571/577 looper letters, 255 selfloop transitions, 60 changer transitions 19/335 dead transitions. [2023-09-01 12:26:26,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 335 transitions, 6253 flow [2023-09-01 12:26:26,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:26:26,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:26:26,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1375 transitions. [2023-09-01 12:26:26,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47660311958405543 [2023-09-01 12:26:26,318 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1375 transitions. [2023-09-01 12:26:26,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1375 transitions. [2023-09-01 12:26:26,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:26,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1375 transitions. [2023-09-01 12:26:26,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 275.0) internal successors, (1375), 5 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) [2023-09-01 12:26:26,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:26,322 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:26,322 INFO L175 Difference]: Start difference. First operand has 173 places, 305 transitions, 5571 flow. Second operand 5 states and 1375 transitions. [2023-09-01 12:26:26,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 335 transitions, 6253 flow [2023-09-01 12:26:27,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 335 transitions, 6120 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-09-01 12:26:27,860 INFO L231 Difference]: Finished difference. Result has 170 places, 284 transitions, 5054 flow [2023-09-01 12:26:27,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=5226, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5054, PETRI_PLACES=170, PETRI_TRANSITIONS=284} [2023-09-01 12:26:27,861 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 132 predicate places. [2023-09-01 12:26:27,861 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 284 transitions, 5054 flow [2023-09-01 12:26:27,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 264.5) internal successors, (1058), 4 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:27,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:27,862 INFO L208 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] [2023-09-01 12:26:27,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-09-01 12:26:27,862 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:27,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:27,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1082399877, now seen corresponding path program 4 times [2023-09-01 12:26:27,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:27,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928802807] [2023-09-01 12:26:27,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:27,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:27,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:27,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928802807] [2023-09-01 12:26:27,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928802807] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:27,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:26:27,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:26:27,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073046040] [2023-09-01 12:26:27,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:27,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:26:27,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:27,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:26:27,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:26:27,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 577 [2023-09-01 12:26:27,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 284 transitions, 5054 flow. Second operand has 4 states, 4 states have (on average 266.5) internal successors, (1066), 4 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:27,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:27,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 577 [2023-09-01 12:26:27,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:29,440 INFO L130 PetriNetUnfolder]: 9579/14325 cut-off events. [2023-09-01 12:26:29,440 INFO L131 PetriNetUnfolder]: For 145773/146073 co-relation queries the response was YES. [2023-09-01 12:26:29,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74699 conditions, 14325 events. 9579/14325 cut-off events. For 145773/146073 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 89478 event pairs, 2186 based on Foata normal form. 220/12993 useless extension candidates. Maximal degree in co-relation 74652. Up to 12526 conditions per place. [2023-09-01 12:26:29,558 INFO L137 encePairwiseOnDemand]: 573/577 looper letters, 275 selfloop transitions, 29 changer transitions 0/305 dead transitions. [2023-09-01 12:26:29,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 305 transitions, 5633 flow [2023-09-01 12:26:29,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 12:26:29,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 12:26:29,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1117 transitions. [2023-09-01 12:26:29,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48396880415944543 [2023-09-01 12:26:29,560 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1117 transitions. [2023-09-01 12:26:29,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1117 transitions. [2023-09-01 12:26:29,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:29,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1117 transitions. [2023-09-01 12:26:29,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 279.25) internal successors, (1117), 4 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:29,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:29,563 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:29,563 INFO L175 Difference]: Start difference. First operand has 170 places, 284 transitions, 5054 flow. Second operand 4 states and 1117 transitions. [2023-09-01 12:26:29,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 305 transitions, 5633 flow [2023-09-01 12:26:30,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 305 transitions, 5548 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-09-01 12:26:30,671 INFO L231 Difference]: Finished difference. Result has 172 places, 278 transitions, 4878 flow [2023-09-01 12:26:30,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=4734, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4878, PETRI_PLACES=172, PETRI_TRANSITIONS=278} [2023-09-01 12:26:30,672 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 134 predicate places. [2023-09-01 12:26:30,672 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 278 transitions, 4878 flow [2023-09-01 12:26:30,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.5) internal successors, (1066), 4 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:30,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:30,672 INFO L208 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] [2023-09-01 12:26:30,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-09-01 12:26:30,673 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:30,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:30,673 INFO L85 PathProgramCache]: Analyzing trace with hash -241854389, now seen corresponding path program 5 times [2023-09-01 12:26:30,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:30,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962814307] [2023-09-01 12:26:30,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:30,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:30,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:30,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:30,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962814307] [2023-09-01 12:26:30,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962814307] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:30,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:26:30,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:26:30,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676947570] [2023-09-01 12:26:30,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:30,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:26:30,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:30,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:26:30,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:26:30,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 577 [2023-09-01 12:26:30,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 278 transitions, 4878 flow. Second operand has 4 states, 4 states have (on average 264.5) internal successors, (1058), 4 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:30,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:30,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 577 [2023-09-01 12:26:30,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:32,285 INFO L130 PetriNetUnfolder]: 9019/13384 cut-off events. [2023-09-01 12:26:32,285 INFO L131 PetriNetUnfolder]: For 132016/132216 co-relation queries the response was YES. [2023-09-01 12:26:32,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71851 conditions, 13384 events. 9019/13384 cut-off events. For 132016/132216 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 81235 event pairs, 1727 based on Foata normal form. 154/12093 useless extension candidates. Maximal degree in co-relation 71802. Up to 9552 conditions per place. [2023-09-01 12:26:32,369 INFO L137 encePairwiseOnDemand]: 571/577 looper letters, 248 selfloop transitions, 48 changer transitions 9/306 dead transitions. [2023-09-01 12:26:32,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 306 transitions, 5393 flow [2023-09-01 12:26:32,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:26:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:26:32,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1377 transitions. [2023-09-01 12:26:32,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47729636048526863 [2023-09-01 12:26:32,371 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1377 transitions. [2023-09-01 12:26:32,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1377 transitions. [2023-09-01 12:26:32,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:32,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1377 transitions. [2023-09-01 12:26:32,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 275.4) internal successors, (1377), 5 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:32,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:32,375 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:32,375 INFO L175 Difference]: Start difference. First operand has 172 places, 278 transitions, 4878 flow. Second operand 5 states and 1377 transitions. [2023-09-01 12:26:32,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 306 transitions, 5393 flow [2023-09-01 12:26:33,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 306 transitions, 5137 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-09-01 12:26:33,228 INFO L231 Difference]: Finished difference. Result has 166 places, 255 transitions, 4222 flow [2023-09-01 12:26:33,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=4315, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4222, PETRI_PLACES=166, PETRI_TRANSITIONS=255} [2023-09-01 12:26:33,228 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 128 predicate places. [2023-09-01 12:26:33,229 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 255 transitions, 4222 flow [2023-09-01 12:26:33,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 264.5) internal successors, (1058), 4 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:33,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:33,229 INFO L208 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] [2023-09-01 12:26:33,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-09-01 12:26:33,230 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:33,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:33,230 INFO L85 PathProgramCache]: Analyzing trace with hash -647602329, now seen corresponding path program 6 times [2023-09-01 12:26:33,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:33,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49119748] [2023-09-01 12:26:33,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:33,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:33,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:33,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:33,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49119748] [2023-09-01 12:26:33,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49119748] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:33,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:26:33,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:26:33,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731132074] [2023-09-01 12:26:33,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:33,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:26:33,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:33,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:26:33,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:26:33,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 577 [2023-09-01 12:26:33,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 255 transitions, 4222 flow. Second operand has 4 states, 4 states have (on average 266.5) internal successors, (1066), 4 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:33,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:33,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 577 [2023-09-01 12:26:33,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:34,526 INFO L130 PetriNetUnfolder]: 8631/12816 cut-off events. [2023-09-01 12:26:34,526 INFO L131 PetriNetUnfolder]: For 112778/112978 co-relation queries the response was YES. [2023-09-01 12:26:34,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66638 conditions, 12816 events. 8631/12816 cut-off events. For 112778/112978 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 77683 event pairs, 2092 based on Foata normal form. 245/11650 useless extension candidates. Maximal degree in co-relation 66592. Up to 11854 conditions per place. [2023-09-01 12:26:34,654 INFO L137 encePairwiseOnDemand]: 573/577 looper letters, 231 selfloop transitions, 22 changer transitions 0/254 dead transitions. [2023-09-01 12:26:34,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 254 transitions, 4449 flow [2023-09-01 12:26:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 12:26:34,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 12:26:34,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1108 transitions. [2023-09-01 12:26:34,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4800693240901213 [2023-09-01 12:26:34,657 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1108 transitions. [2023-09-01 12:26:34,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1108 transitions. [2023-09-01 12:26:34,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:34,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1108 transitions. [2023-09-01 12:26:34,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:34,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:34,660 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:34,660 INFO L175 Difference]: Start difference. First operand has 166 places, 255 transitions, 4222 flow. Second operand 4 states and 1108 transitions. [2023-09-01 12:26:34,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 254 transitions, 4449 flow [2023-09-01 12:26:35,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 254 transitions, 4146 flow, removed 24 selfloop flow, removed 9 redundant places. [2023-09-01 12:26:35,347 INFO L231 Difference]: Finished difference. Result has 154 places, 235 transitions, 3543 flow [2023-09-01 12:26:35,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=3499, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3543, PETRI_PLACES=154, PETRI_TRANSITIONS=235} [2023-09-01 12:26:35,348 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 116 predicate places. [2023-09-01 12:26:35,348 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 235 transitions, 3543 flow [2023-09-01 12:26:35,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.5) internal successors, (1066), 4 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:35,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:35,349 INFO L208 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] [2023-09-01 12:26:35,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-09-01 12:26:35,349 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:35,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:35,349 INFO L85 PathProgramCache]: Analyzing trace with hash 417802368, now seen corresponding path program 1 times [2023-09-01 12:26:35,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:35,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498264729] [2023-09-01 12:26:35,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:35,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:35,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:35,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:35,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498264729] [2023-09-01 12:26:35,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498264729] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:35,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:26:35,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:26:35,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759908271] [2023-09-01 12:26:35,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:35,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:26:35,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:35,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:26:35,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:26:35,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 577 [2023-09-01 12:26:35,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 235 transitions, 3543 flow. Second operand has 4 states, 4 states have (on average 266.5) internal successors, (1066), 4 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:35,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:35,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 577 [2023-09-01 12:26:35,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:36,690 INFO L130 PetriNetUnfolder]: 8527/12771 cut-off events. [2023-09-01 12:26:36,690 INFO L131 PetriNetUnfolder]: For 87265/87325 co-relation queries the response was YES. [2023-09-01 12:26:36,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63324 conditions, 12771 events. 8527/12771 cut-off events. For 87265/87325 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 78281 event pairs, 1180 based on Foata normal form. 96/11441 useless extension candidates. Maximal degree in co-relation 63285. Up to 10420 conditions per place. [2023-09-01 12:26:36,773 INFO L137 encePairwiseOnDemand]: 573/577 looper letters, 247 selfloop transitions, 27 changer transitions 0/275 dead transitions. [2023-09-01 12:26:36,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 275 transitions, 4343 flow [2023-09-01 12:26:36,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 12:26:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 12:26:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1113 transitions. [2023-09-01 12:26:36,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48223570190641246 [2023-09-01 12:26:36,775 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1113 transitions. [2023-09-01 12:26:36,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1113 transitions. [2023-09-01 12:26:36,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:36,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1113 transitions. [2023-09-01 12:26:36,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 278.25) internal successors, (1113), 4 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:36,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:36,777 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:36,777 INFO L175 Difference]: Start difference. First operand has 154 places, 235 transitions, 3543 flow. Second operand 4 states and 1113 transitions. [2023-09-01 12:26:36,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 275 transitions, 4343 flow [2023-09-01 12:26:37,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 275 transitions, 4272 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-09-01 12:26:37,099 INFO L231 Difference]: Finished difference. Result has 156 places, 231 transitions, 3467 flow [2023-09-01 12:26:37,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=3335, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3467, PETRI_PLACES=156, PETRI_TRANSITIONS=231} [2023-09-01 12:26:37,100 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 118 predicate places. [2023-09-01 12:26:37,100 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 231 transitions, 3467 flow [2023-09-01 12:26:37,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.5) internal successors, (1066), 4 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:37,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:37,100 INFO L208 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] [2023-09-01 12:26:37,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-09-01 12:26:37,101 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:37,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:37,101 INFO L85 PathProgramCache]: Analyzing trace with hash 26060358, now seen corresponding path program 2 times [2023-09-01 12:26:37,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:37,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128757600] [2023-09-01 12:26:37,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:37,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:37,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:37,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128757600] [2023-09-01 12:26:37,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128757600] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:37,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:26:37,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:26:37,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373577584] [2023-09-01 12:26:37,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:37,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:26:37,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:37,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:26:37,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:26:37,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 577 [2023-09-01 12:26:37,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 231 transitions, 3467 flow. Second operand has 4 states, 4 states have (on average 265.5) internal successors, (1062), 4 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:37,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:37,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 577 [2023-09-01 12:26:37,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:38,241 INFO L130 PetriNetUnfolder]: 7919/11805 cut-off events. [2023-09-01 12:26:38,241 INFO L131 PetriNetUnfolder]: For 90378/90418 co-relation queries the response was YES. [2023-09-01 12:26:38,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58930 conditions, 11805 events. 7919/11805 cut-off events. For 90378/90418 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 70417 event pairs, 3180 based on Foata normal form. 115/10582 useless extension candidates. Maximal degree in co-relation 58891. Up to 8644 conditions per place. [2023-09-01 12:26:38,324 INFO L137 encePairwiseOnDemand]: 572/577 looper letters, 244 selfloop transitions, 26 changer transitions 13/284 dead transitions. [2023-09-01 12:26:38,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 284 transitions, 4144 flow [2023-09-01 12:26:38,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:26:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:26:38,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1398 transitions. [2023-09-01 12:26:38,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845753899480069 [2023-09-01 12:26:38,325 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1398 transitions. [2023-09-01 12:26:38,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1398 transitions. [2023-09-01 12:26:38,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:38,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1398 transitions. [2023-09-01 12:26:38,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 279.6) internal successors, (1398), 5 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:38,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:38,329 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:38,330 INFO L175 Difference]: Start difference. First operand has 156 places, 231 transitions, 3467 flow. Second operand 5 states and 1398 transitions. [2023-09-01 12:26:38,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 284 transitions, 4144 flow [2023-09-01 12:26:38,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 284 transitions, 4131 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 12:26:38,657 INFO L231 Difference]: Finished difference. Result has 155 places, 216 transitions, 3224 flow [2023-09-01 12:26:38,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=3322, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3224, PETRI_PLACES=155, PETRI_TRANSITIONS=216} [2023-09-01 12:26:38,658 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 117 predicate places. [2023-09-01 12:26:38,658 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 216 transitions, 3224 flow [2023-09-01 12:26:38,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.5) internal successors, (1062), 4 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:38,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:38,658 INFO L208 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] [2023-09-01 12:26:38,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-09-01 12:26:38,659 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:38,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:38,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1214310244, now seen corresponding path program 3 times [2023-09-01 12:26:38,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:38,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159990211] [2023-09-01 12:26:38,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:38,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:38,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:38,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:38,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159990211] [2023-09-01 12:26:38,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159990211] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:38,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:26:38,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:26:38,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603282668] [2023-09-01 12:26:38,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:38,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:26:38,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:38,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:26:38,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:26:38,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 577 [2023-09-01 12:26:38,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 216 transitions, 3224 flow. Second operand has 4 states, 4 states have (on average 264.5) internal successors, (1058), 4 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:38,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:38,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 577 [2023-09-01 12:26:38,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:39,720 INFO L130 PetriNetUnfolder]: 7151/10497 cut-off events. [2023-09-01 12:26:39,720 INFO L131 PetriNetUnfolder]: For 81943/82003 co-relation queries the response was YES. [2023-09-01 12:26:39,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54151 conditions, 10497 events. 7151/10497 cut-off events. For 81943/82003 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 59484 event pairs, 1036 based on Foata normal form. 90/9417 useless extension candidates. Maximal degree in co-relation 54112. Up to 8284 conditions per place. [2023-09-01 12:26:39,804 INFO L137 encePairwiseOnDemand]: 572/577 looper letters, 196 selfloop transitions, 23 changer transitions 10/230 dead transitions. [2023-09-01 12:26:39,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 230 transitions, 3538 flow [2023-09-01 12:26:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 12:26:39,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 12:26:39,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1108 transitions. [2023-09-01 12:26:39,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4800693240901213 [2023-09-01 12:26:39,806 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1108 transitions. [2023-09-01 12:26:39,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1108 transitions. [2023-09-01 12:26:39,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:39,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1108 transitions. [2023-09-01 12:26:39,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:39,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:39,809 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:39,809 INFO L175 Difference]: Start difference. First operand has 155 places, 216 transitions, 3224 flow. Second operand 4 states and 1108 transitions. [2023-09-01 12:26:39,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 230 transitions, 3538 flow [2023-09-01 12:26:40,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 230 transitions, 3385 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-09-01 12:26:40,125 INFO L231 Difference]: Finished difference. Result has 146 places, 192 transitions, 2685 flow [2023-09-01 12:26:40,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=2821, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2685, PETRI_PLACES=146, PETRI_TRANSITIONS=192} [2023-09-01 12:26:40,126 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 108 predicate places. [2023-09-01 12:26:40,126 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 192 transitions, 2685 flow [2023-09-01 12:26:40,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 264.5) internal successors, (1058), 4 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:40,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:40,126 INFO L208 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] [2023-09-01 12:26:40,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-09-01 12:26:40,126 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:40,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:40,127 INFO L85 PathProgramCache]: Analyzing trace with hash -752652904, now seen corresponding path program 4 times [2023-09-01 12:26:40,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:40,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65483020] [2023-09-01 12:26:40,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:40,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:40,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:40,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65483020] [2023-09-01 12:26:40,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65483020] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:40,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:26:40,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:26:40,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905283301] [2023-09-01 12:26:40,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:40,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:26:40,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:40,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:26:40,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:26:40,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 577 [2023-09-01 12:26:40,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 192 transitions, 2685 flow. Second operand has 4 states, 4 states have (on average 266.5) internal successors, (1066), 4 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:40,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:40,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 577 [2023-09-01 12:26:40,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:41,014 INFO L130 PetriNetUnfolder]: 6713/9835 cut-off events. [2023-09-01 12:26:41,014 INFO L131 PetriNetUnfolder]: For 64392/64412 co-relation queries the response was YES. [2023-09-01 12:26:41,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48997 conditions, 9835 events. 6713/9835 cut-off events. For 64392/64412 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 55070 event pairs, 1134 based on Foata normal form. 144/8849 useless extension candidates. Maximal degree in co-relation 48961. Up to 8872 conditions per place. [2023-09-01 12:26:41,072 INFO L137 encePairwiseOnDemand]: 573/577 looper letters, 185 selfloop transitions, 17 changer transitions 0/203 dead transitions. [2023-09-01 12:26:41,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 203 transitions, 2978 flow [2023-09-01 12:26:41,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 12:26:41,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 12:26:41,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1108 transitions. [2023-09-01 12:26:41,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4800693240901213 [2023-09-01 12:26:41,075 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1108 transitions. [2023-09-01 12:26:41,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1108 transitions. [2023-09-01 12:26:41,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:41,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1108 transitions. [2023-09-01 12:26:41,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:41,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:41,078 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:41,078 INFO L175 Difference]: Start difference. First operand has 146 places, 192 transitions, 2685 flow. Second operand 4 states and 1108 transitions. [2023-09-01 12:26:41,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 203 transitions, 2978 flow [2023-09-01 12:26:41,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 203 transitions, 2655 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-09-01 12:26:41,217 INFO L231 Difference]: Finished difference. Result has 129 places, 174 transitions, 2125 flow [2023-09-01 12:26:41,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2125, PETRI_PLACES=129, PETRI_TRANSITIONS=174} [2023-09-01 12:26:41,217 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 91 predicate places. [2023-09-01 12:26:41,217 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 174 transitions, 2125 flow [2023-09-01 12:26:41,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.5) internal successors, (1066), 4 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:41,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:41,218 INFO L208 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] [2023-09-01 12:26:41,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-09-01 12:26:41,218 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:41,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:41,219 INFO L85 PathProgramCache]: Analyzing trace with hash 869502642, now seen corresponding path program 1 times [2023-09-01 12:26:41,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:41,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112749783] [2023-09-01 12:26:41,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:41,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:41,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:26:41,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:41,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112749783] [2023-09-01 12:26:41,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112749783] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:26:41,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864606019] [2023-09-01 12:26:41,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:41,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:26:41,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:26:41,360 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) [2023-09-01 12:26:41,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 12:26:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:41,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 12:26:41,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:26:41,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:26:41,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 12:26:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:26:41,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864606019] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 12:26:41,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 12:26:41,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2023-09-01 12:26:41,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474584028] [2023-09-01 12:26:41,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:41,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:26:41,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:41,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:26:41,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-09-01 12:26:41,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 577 [2023-09-01 12:26:41,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 174 transitions, 2125 flow. Second operand has 7 states, 7 states have (on average 248.28571428571428) internal successors, (1738), 7 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:41,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:41,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 577 [2023-09-01 12:26:41,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:43,171 INFO L130 PetriNetUnfolder]: 8125/12111 cut-off events. [2023-09-01 12:26:43,171 INFO L131 PetriNetUnfolder]: For 63557/63566 co-relation queries the response was YES. [2023-09-01 12:26:43,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55810 conditions, 12111 events. 8125/12111 cut-off events. For 63557/63566 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 72245 event pairs, 1514 based on Foata normal form. 104/10915 useless extension candidates. Maximal degree in co-relation 55780. Up to 4332 conditions per place. [2023-09-01 12:26:43,252 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 534 selfloop transitions, 29 changer transitions 0/564 dead transitions. [2023-09-01 12:26:43,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 564 transitions, 8226 flow [2023-09-01 12:26:43,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 12:26:43,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 12:26:43,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2610 transitions. [2023-09-01 12:26:43,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45233968804159447 [2023-09-01 12:26:43,257 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2610 transitions. [2023-09-01 12:26:43,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2610 transitions. [2023-09-01 12:26:43,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:43,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2610 transitions. [2023-09-01 12:26:43,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 261.0) internal successors, (2610), 10 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:43,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 577.0) internal successors, (6347), 11 states have internal predecessors, (6347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:43,263 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 577.0) internal successors, (6347), 11 states have internal predecessors, (6347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:43,263 INFO L175 Difference]: Start difference. First operand has 129 places, 174 transitions, 2125 flow. Second operand 10 states and 2610 transitions. [2023-09-01 12:26:43,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 564 transitions, 8226 flow [2023-09-01 12:26:43,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 564 transitions, 8132 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-09-01 12:26:43,389 INFO L231 Difference]: Finished difference. Result has 138 places, 196 transitions, 2488 flow [2023-09-01 12:26:43,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=2101, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2488, PETRI_PLACES=138, PETRI_TRANSITIONS=196} [2023-09-01 12:26:43,389 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 100 predicate places. [2023-09-01 12:26:43,389 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 196 transitions, 2488 flow [2023-09-01 12:26:43,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 248.28571428571428) internal successors, (1738), 7 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:43,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:43,390 INFO L208 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] [2023-09-01 12:26:43,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 12:26:43,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-09-01 12:26:43,591 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:43,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:43,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1284664047, now seen corresponding path program 1 times [2023-09-01 12:26:43,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:43,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916643801] [2023-09-01 12:26:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:43,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:43,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:43,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:43,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916643801] [2023-09-01 12:26:43,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916643801] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:43,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:26:43,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:26:43,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476306474] [2023-09-01 12:26:43,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:43,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:26:43,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:43,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:26:43,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:26:43,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-09-01 12:26:43,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 196 transitions, 2488 flow. Second operand has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:43,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:43,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-09-01 12:26:43,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:44,579 INFO L130 PetriNetUnfolder]: 5157/7984 cut-off events. [2023-09-01 12:26:44,579 INFO L131 PetriNetUnfolder]: For 41344/41420 co-relation queries the response was YES. [2023-09-01 12:26:44,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39652 conditions, 7984 events. 5157/7984 cut-off events. For 41344/41420 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 46068 event pairs, 2348 based on Foata normal form. 470/7922 useless extension candidates. Maximal degree in co-relation 39621. Up to 5958 conditions per place. [2023-09-01 12:26:44,646 INFO L137 encePairwiseOnDemand]: 569/577 looper letters, 169 selfloop transitions, 2 changer transitions 204/376 dead transitions. [2023-09-01 12:26:44,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 376 transitions, 5714 flow [2023-09-01 12:26:44,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:26:44,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:26:44,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1888 transitions. [2023-09-01 12:26:44,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674424362465957 [2023-09-01 12:26:44,648 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1888 transitions. [2023-09-01 12:26:44,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1888 transitions. [2023-09-01 12:26:44,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:44,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1888 transitions. [2023-09-01 12:26:44,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 269.7142857142857) internal successors, (1888), 7 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:44,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:44,654 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:44,654 INFO L175 Difference]: Start difference. First operand has 138 places, 196 transitions, 2488 flow. Second operand 7 states and 1888 transitions. [2023-09-01 12:26:44,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 376 transitions, 5714 flow [2023-09-01 12:26:44,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 376 transitions, 5704 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 12:26:44,798 INFO L231 Difference]: Finished difference. Result has 143 places, 172 transitions, 2342 flow [2023-09-01 12:26:44,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2342, PETRI_PLACES=143, PETRI_TRANSITIONS=172} [2023-09-01 12:26:44,798 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 105 predicate places. [2023-09-01 12:26:44,799 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 172 transitions, 2342 flow [2023-09-01 12:26:44,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:44,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:44,799 INFO L208 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] [2023-09-01 12:26:44,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-09-01 12:26:44,800 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:44,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:44,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2120518970, now seen corresponding path program 1 times [2023-09-01 12:26:44,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:44,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706514318] [2023-09-01 12:26:44,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:44,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:44,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:44,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:44,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706514318] [2023-09-01 12:26:44,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706514318] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:44,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:26:44,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 12:26:44,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632632463] [2023-09-01 12:26:44,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:44,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:26:44,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:44,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:26:44,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:26:44,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-09-01 12:26:44,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 172 transitions, 2342 flow. Second operand has 5 states, 5 states have (on average 258.8) internal successors, (1294), 5 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:44,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:44,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-09-01 12:26:44,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:45,580 INFO L130 PetriNetUnfolder]: 3144/4869 cut-off events. [2023-09-01 12:26:45,580 INFO L131 PetriNetUnfolder]: For 28257/28274 co-relation queries the response was YES. [2023-09-01 12:26:45,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25023 conditions, 4869 events. 3144/4869 cut-off events. For 28257/28274 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 26084 event pairs, 1286 based on Foata normal form. 364/5016 useless extension candidates. Maximal degree in co-relation 24990. Up to 3247 conditions per place. [2023-09-01 12:26:45,600 INFO L137 encePairwiseOnDemand]: 571/577 looper letters, 128 selfloop transitions, 2 changer transitions 157/288 dead transitions. [2023-09-01 12:26:45,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 288 transitions, 4131 flow [2023-09-01 12:26:45,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:26:45,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:26:45,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1892 transitions. [2023-09-01 12:26:45,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684327803911859 [2023-09-01 12:26:45,607 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1892 transitions. [2023-09-01 12:26:45,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1892 transitions. [2023-09-01 12:26:45,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:45,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1892 transitions. [2023-09-01 12:26:45,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 270.2857142857143) internal successors, (1892), 7 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:45,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:45,616 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:45,617 INFO L175 Difference]: Start difference. First operand has 143 places, 172 transitions, 2342 flow. Second operand 7 states and 1892 transitions. [2023-09-01 12:26:45,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 288 transitions, 4131 flow [2023-09-01 12:26:45,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 288 transitions, 3995 flow, removed 43 selfloop flow, removed 8 redundant places. [2023-09-01 12:26:45,710 INFO L231 Difference]: Finished difference. Result has 134 places, 131 transitions, 1639 flow [2023-09-01 12:26:45,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=1962, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1639, PETRI_PLACES=134, PETRI_TRANSITIONS=131} [2023-09-01 12:26:45,711 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 96 predicate places. [2023-09-01 12:26:45,711 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 131 transitions, 1639 flow [2023-09-01 12:26:45,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 258.8) internal successors, (1294), 5 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:45,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:45,711 INFO L208 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] [2023-09-01 12:26:45,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-09-01 12:26:45,712 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:45,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:45,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1482106300, now seen corresponding path program 1 times [2023-09-01 12:26:45,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:45,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649962666] [2023-09-01 12:26:45,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:45,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 12:26:45,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:45,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649962666] [2023-09-01 12:26:45,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649962666] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:45,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:26:45,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:26:45,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497271307] [2023-09-01 12:26:45,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:45,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:26:45,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:45,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:26:45,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:26:45,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 577 [2023-09-01 12:26:45,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 131 transitions, 1639 flow. Second operand has 4 states, 4 states have (on average 267.25) internal successors, (1069), 4 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:45,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:45,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 577 [2023-09-01 12:26:45,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:46,142 INFO L130 PetriNetUnfolder]: 2143/3238 cut-off events. [2023-09-01 12:26:46,142 INFO L131 PetriNetUnfolder]: For 15723/15749 co-relation queries the response was YES. [2023-09-01 12:26:46,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15229 conditions, 3238 events. 2143/3238 cut-off events. For 15723/15749 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 15382 event pairs, 240 based on Foata normal form. 96/3128 useless extension candidates. Maximal degree in co-relation 15198. Up to 2367 conditions per place. [2023-09-01 12:26:46,159 INFO L137 encePairwiseOnDemand]: 573/577 looper letters, 142 selfloop transitions, 13 changer transitions 0/156 dead transitions. [2023-09-01 12:26:46,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 156 transitions, 1991 flow [2023-09-01 12:26:46,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 12:26:46,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 12:26:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1116 transitions. [2023-09-01 12:26:46,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48353552859618715 [2023-09-01 12:26:46,160 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1116 transitions. [2023-09-01 12:26:46,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1116 transitions. [2023-09-01 12:26:46,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:46,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1116 transitions. [2023-09-01 12:26:46,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:46,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:46,163 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:46,163 INFO L175 Difference]: Start difference. First operand has 134 places, 131 transitions, 1639 flow. Second operand 4 states and 1116 transitions. [2023-09-01 12:26:46,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 156 transitions, 1991 flow [2023-09-01 12:26:46,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 156 transitions, 1902 flow, removed 17 selfloop flow, removed 9 redundant places. [2023-09-01 12:26:46,222 INFO L231 Difference]: Finished difference. Result has 121 places, 127 transitions, 1514 flow [2023-09-01 12:26:46,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1514, PETRI_PLACES=121, PETRI_TRANSITIONS=127} [2023-09-01 12:26:46,222 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 83 predicate places. [2023-09-01 12:26:46,223 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 127 transitions, 1514 flow [2023-09-01 12:26:46,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 267.25) internal successors, (1069), 4 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:46,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:46,223 INFO L208 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] [2023-09-01 12:26:46,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-09-01 12:26:46,223 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:46,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:46,224 INFO L85 PathProgramCache]: Analyzing trace with hash -859998328, now seen corresponding path program 2 times [2023-09-01 12:26:46,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:46,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837330513] [2023-09-01 12:26:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:46,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:26:46,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:46,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837330513] [2023-09-01 12:26:46,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837330513] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:46,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:26:46,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:26:46,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700126547] [2023-09-01 12:26:46,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:46,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:26:46,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:46,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:26:46,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:26:46,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 577 [2023-09-01 12:26:46,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 127 transitions, 1514 flow. Second operand has 4 states, 4 states have (on average 267.25) internal successors, (1069), 4 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:46,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:46,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 577 [2023-09-01 12:26:46,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:46,636 INFO L130 PetriNetUnfolder]: 1949/2965 cut-off events. [2023-09-01 12:26:46,637 INFO L131 PetriNetUnfolder]: For 12820/12856 co-relation queries the response was YES. [2023-09-01 12:26:46,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12978 conditions, 2965 events. 1949/2965 cut-off events. For 12820/12856 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13969 event pairs, 139 based on Foata normal form. 98/2875 useless extension candidates. Maximal degree in co-relation 12952. Up to 2351 conditions per place. [2023-09-01 12:26:46,651 INFO L137 encePairwiseOnDemand]: 573/577 looper letters, 132 selfloop transitions, 13 changer transitions 0/146 dead transitions. [2023-09-01 12:26:46,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 146 transitions, 1799 flow [2023-09-01 12:26:46,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 12:26:46,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 12:26:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1114 transitions. [2023-09-01 12:26:46,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826689774696707 [2023-09-01 12:26:46,652 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1114 transitions. [2023-09-01 12:26:46,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1114 transitions. [2023-09-01 12:26:46,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:46,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1114 transitions. [2023-09-01 12:26:46,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:46,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:46,654 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:46,654 INFO L175 Difference]: Start difference. First operand has 121 places, 127 transitions, 1514 flow. Second operand 4 states and 1114 transitions. [2023-09-01 12:26:46,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 146 transitions, 1799 flow [2023-09-01 12:26:46,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 146 transitions, 1586 flow, removed 6 selfloop flow, removed 11 redundant places. [2023-09-01 12:26:46,678 INFO L231 Difference]: Finished difference. Result has 106 places, 115 transitions, 1191 flow [2023-09-01 12:26:46,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1191, PETRI_PLACES=106, PETRI_TRANSITIONS=115} [2023-09-01 12:26:46,678 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 68 predicate places. [2023-09-01 12:26:46,678 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 115 transitions, 1191 flow [2023-09-01 12:26:46,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 267.25) internal successors, (1069), 4 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:46,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:46,679 INFO L208 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] [2023-09-01 12:26:46,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-09-01 12:26:46,679 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:46,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:46,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1984418969, now seen corresponding path program 1 times [2023-09-01 12:26:46,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:46,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501144791] [2023-09-01 12:26:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:46,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 12:26:46,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:46,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501144791] [2023-09-01 12:26:46,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501144791] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:26:46,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482359394] [2023-09-01 12:26:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:46,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:26:46,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:26:46,927 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) [2023-09-01 12:26:46,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 12:26:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:47,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 12:26:47,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:26:47,361 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:26:47,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 73 [2023-09-01 12:26:47,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 12:26:47,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 12:26:47,560 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:26:47,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 109 [2023-09-01 12:26:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 12:26:47,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482359394] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 12:26:47,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 12:26:47,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 8] total 20 [2023-09-01 12:26:47,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832391710] [2023-09-01 12:26:47,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:47,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:26:47,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:47,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:26:47,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2023-09-01 12:26:48,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 577 [2023-09-01 12:26:48,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 115 transitions, 1191 flow. Second operand has 10 states, 10 states have (on average 234.6) internal successors, (2346), 10 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:48,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:48,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 577 [2023-09-01 12:26:48,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:49,123 INFO L130 PetriNetUnfolder]: 4022/6160 cut-off events. [2023-09-01 12:26:49,123 INFO L131 PetriNetUnfolder]: For 18962/18982 co-relation queries the response was YES. [2023-09-01 12:26:49,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24482 conditions, 6160 events. 4022/6160 cut-off events. For 18962/18982 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 33946 event pairs, 890 based on Foata normal form. 8/5793 useless extension candidates. Maximal degree in co-relation 24461. Up to 1908 conditions per place. [2023-09-01 12:26:49,151 INFO L137 encePairwiseOnDemand]: 565/577 looper letters, 200 selfloop transitions, 67 changer transitions 59/327 dead transitions. [2023-09-01 12:26:49,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 327 transitions, 3726 flow [2023-09-01 12:26:49,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 12:26:49,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 12:26:49,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2698 transitions. [2023-09-01 12:26:49,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42508271624389476 [2023-09-01 12:26:49,154 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2698 transitions. [2023-09-01 12:26:49,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2698 transitions. [2023-09-01 12:26:49,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:49,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2698 transitions. [2023-09-01 12:26:49,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 245.27272727272728) internal successors, (2698), 11 states have internal predecessors, (2698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:49,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 577.0) internal successors, (6924), 12 states have internal predecessors, (6924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:49,161 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 577.0) internal successors, (6924), 12 states have internal predecessors, (6924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:49,162 INFO L175 Difference]: Start difference. First operand has 106 places, 115 transitions, 1191 flow. Second operand 11 states and 2698 transitions. [2023-09-01 12:26:49,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 327 transitions, 3726 flow [2023-09-01 12:26:49,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 327 transitions, 3712 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 12:26:49,205 INFO L231 Difference]: Finished difference. Result has 119 places, 149 transitions, 1727 flow [2023-09-01 12:26:49,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1727, PETRI_PLACES=119, PETRI_TRANSITIONS=149} [2023-09-01 12:26:49,206 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 81 predicate places. [2023-09-01 12:26:49,206 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 149 transitions, 1727 flow [2023-09-01 12:26:49,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 234.6) internal successors, (2346), 10 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:49,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:49,206 INFO L208 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] [2023-09-01 12:26:49,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 12:26:49,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-09-01 12:26:49,412 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:49,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:49,413 INFO L85 PathProgramCache]: Analyzing trace with hash 261685965, now seen corresponding path program 2 times [2023-09-01 12:26:49,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:49,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211035763] [2023-09-01 12:26:49,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:49,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 12:26:49,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:49,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211035763] [2023-09-01 12:26:49,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211035763] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:26:49,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474464371] [2023-09-01 12:26:49,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 12:26:49,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:26:49,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:26:49,677 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) [2023-09-01 12:26:49,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 12:26:49,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 12:26:49,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:26:49,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 12:26:49,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:26:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:26:50,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 12:26:50,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474464371] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:26:50,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 12:26:50,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 15 [2023-09-01 12:26:50,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605073113] [2023-09-01 12:26:50,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:50,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:26:50,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:50,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:26:50,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-09-01 12:26:50,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 577 [2023-09-01 12:26:50,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 149 transitions, 1727 flow. Second operand has 10 states, 10 states have (on average 240.6) internal successors, (2406), 10 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:50,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:50,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 577 [2023-09-01 12:26:50,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:51,127 INFO L130 PetriNetUnfolder]: 3744/5766 cut-off events. [2023-09-01 12:26:51,127 INFO L131 PetriNetUnfolder]: For 20179/20199 co-relation queries the response was YES. [2023-09-01 12:26:51,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24230 conditions, 5766 events. 3744/5766 cut-off events. For 20179/20199 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 31181 event pairs, 706 based on Foata normal form. 39/5420 useless extension candidates. Maximal degree in co-relation 24205. Up to 1605 conditions per place. [2023-09-01 12:26:51,157 INFO L137 encePairwiseOnDemand]: 565/577 looper letters, 217 selfloop transitions, 58 changer transitions 35/311 dead transitions. [2023-09-01 12:26:51,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 311 transitions, 3603 flow [2023-09-01 12:26:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 12:26:51,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 12:26:51,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3262 transitions. [2023-09-01 12:26:51,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43487534995333954 [2023-09-01 12:26:51,160 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3262 transitions. [2023-09-01 12:26:51,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3262 transitions. [2023-09-01 12:26:51,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:51,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3262 transitions. [2023-09-01 12:26:51,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 250.92307692307693) internal successors, (3262), 13 states have internal predecessors, (3262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:51,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 577.0) internal successors, (8078), 14 states have internal predecessors, (8078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:51,166 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 577.0) internal successors, (8078), 14 states have internal predecessors, (8078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:51,167 INFO L175 Difference]: Start difference. First operand has 119 places, 149 transitions, 1727 flow. Second operand 13 states and 3262 transitions. [2023-09-01 12:26:51,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 311 transitions, 3603 flow [2023-09-01 12:26:51,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 311 transitions, 3504 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-09-01 12:26:51,225 INFO L231 Difference]: Finished difference. Result has 130 places, 181 transitions, 2314 flow [2023-09-01 12:26:51,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=1668, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2314, PETRI_PLACES=130, PETRI_TRANSITIONS=181} [2023-09-01 12:26:51,226 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 92 predicate places. [2023-09-01 12:26:51,226 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 181 transitions, 2314 flow [2023-09-01 12:26:51,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 240.6) internal successors, (2406), 10 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:51,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:51,227 INFO L208 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] [2023-09-01 12:26:51,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 12:26:51,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:26:51,433 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:51,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:51,433 INFO L85 PathProgramCache]: Analyzing trace with hash -168796839, now seen corresponding path program 3 times [2023-09-01 12:26:51,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:51,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252327869] [2023-09-01 12:26:51,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:51,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:51,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:51,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:51,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252327869] [2023-09-01 12:26:51,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252327869] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:26:51,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344200127] [2023-09-01 12:26:51,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 12:26:51,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:26:51,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:26:51,713 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) [2023-09-01 12:26:51,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 12:26:51,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 12:26:51,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:26:51,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 12:26:51,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:26:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:26:52,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 12:26:52,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:26:52,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344200127] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 12:26:52,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 12:26:52,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-09-01 12:26:52,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028329962] [2023-09-01 12:26:52,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 12:26:52,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-09-01 12:26:52,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:52,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-09-01 12:26:52,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2023-09-01 12:26:53,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 577 [2023-09-01 12:26:53,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 181 transitions, 2314 flow. Second operand has 26 states, 26 states have (on average 226.0) internal successors, (5876), 26 states have internal predecessors, (5876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:53,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:53,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 577 [2023-09-01 12:26:53,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:57,279 INFO L130 PetriNetUnfolder]: 9861/15132 cut-off events. [2023-09-01 12:26:57,280 INFO L131 PetriNetUnfolder]: For 55115/55149 co-relation queries the response was YES. [2023-09-01 12:26:57,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65118 conditions, 15132 events. 9861/15132 cut-off events. For 55115/55149 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 96817 event pairs, 1435 based on Foata normal form. 386/14524 useless extension candidates. Maximal degree in co-relation 65091. Up to 1780 conditions per place. [2023-09-01 12:26:57,407 INFO L137 encePairwiseOnDemand]: 559/577 looper letters, 360 selfloop transitions, 164 changer transitions 502/1027 dead transitions. [2023-09-01 12:26:57,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 1027 transitions, 11330 flow [2023-09-01 12:26:57,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-09-01 12:26:57,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-09-01 12:26:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 13338 transitions. [2023-09-01 12:26:57,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055459272097054 [2023-09-01 12:26:57,419 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 13338 transitions. [2023-09-01 12:26:57,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 13338 transitions. [2023-09-01 12:26:57,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:26:57,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 13338 transitions. [2023-09-01 12:26:57,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 234.0) internal successors, (13338), 57 states have internal predecessors, (13338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:57,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 577.0) internal successors, (33466), 58 states have internal predecessors, (33466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:57,464 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 577.0) internal successors, (33466), 58 states have internal predecessors, (33466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:57,464 INFO L175 Difference]: Start difference. First operand has 130 places, 181 transitions, 2314 flow. Second operand 57 states and 13338 transitions. [2023-09-01 12:26:57,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 1027 transitions, 11330 flow [2023-09-01 12:26:57,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 1027 transitions, 10976 flow, removed 75 selfloop flow, removed 7 redundant places. [2023-09-01 12:26:57,812 INFO L231 Difference]: Finished difference. Result has 204 places, 274 transitions, 3893 flow [2023-09-01 12:26:57,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=3893, PETRI_PLACES=204, PETRI_TRANSITIONS=274} [2023-09-01 12:26:57,812 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 166 predicate places. [2023-09-01 12:26:57,813 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 274 transitions, 3893 flow [2023-09-01 12:26:57,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 226.0) internal successors, (5876), 26 states have internal predecessors, (5876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:57,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:26:57,814 INFO L208 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] [2023-09-01 12:26:57,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 12:26:58,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:26:58,020 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:26:58,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:26:58,021 INFO L85 PathProgramCache]: Analyzing trace with hash 584558231, now seen corresponding path program 1 times [2023-09-01 12:26:58,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:26:58,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284572635] [2023-09-01 12:26:58,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:58,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:26:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:58,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:58,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:26:58,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284572635] [2023-09-01 12:26:58,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284572635] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:26:58,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380784167] [2023-09-01 12:26:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:26:58,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:26:58,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:26:58,185 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:26:58,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 12:26:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:26:58,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 12:26:58,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:26:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:58,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 12:26:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:26:58,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380784167] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 12:26:58,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 12:26:58,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 14 [2023-09-01 12:26:58,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975528057] [2023-09-01 12:26:58,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:26:58,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:26:58,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:26:58,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:26:58,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-09-01 12:26:58,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 577 [2023-09-01 12:26:58,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 274 transitions, 3893 flow. Second operand has 7 states, 7 states have (on average 249.0) internal successors, (1743), 7 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:26:58,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:26:58,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 577 [2023-09-01 12:26:58,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:26:59,882 INFO L130 PetriNetUnfolder]: 7401/11506 cut-off events. [2023-09-01 12:26:59,883 INFO L131 PetriNetUnfolder]: For 94593/94707 co-relation queries the response was YES. [2023-09-01 12:26:59,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55654 conditions, 11506 events. 7401/11506 cut-off events. For 94593/94707 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 72290 event pairs, 2229 based on Foata normal form. 546/11517 useless extension candidates. Maximal degree in co-relation 55604. Up to 6984 conditions per place. [2023-09-01 12:27:00,004 INFO L137 encePairwiseOnDemand]: 569/577 looper letters, 349 selfloop transitions, 31 changer transitions 0/381 dead transitions. [2023-09-01 12:27:00,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 381 transitions, 6184 flow [2023-09-01 12:27:00,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:27:00,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:27:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1773 transitions. [2023-09-01 12:27:00,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43897004208962614 [2023-09-01 12:27:00,007 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1773 transitions. [2023-09-01 12:27:00,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1773 transitions. [2023-09-01 12:27:00,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:27:00,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1773 transitions. [2023-09-01 12:27:00,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:27:00,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:27:00,010 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 577.0) internal successors, (4616), 8 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:27:00,010 INFO L175 Difference]: Start difference. First operand has 204 places, 274 transitions, 3893 flow. Second operand 7 states and 1773 transitions. [2023-09-01 12:27:00,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 381 transitions, 6184 flow [2023-09-01 12:27:00,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 381 transitions, 5749 flow, removed 138 selfloop flow, removed 27 redundant places. [2023-09-01 12:27:00,551 INFO L231 Difference]: Finished difference. Result has 150 places, 275 transitions, 3844 flow [2023-09-01 12:27:00,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=3626, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3844, PETRI_PLACES=150, PETRI_TRANSITIONS=275} [2023-09-01 12:27:00,552 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 112 predicate places. [2023-09-01 12:27:00,552 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 275 transitions, 3844 flow [2023-09-01 12:27:00,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 249.0) internal successors, (1743), 7 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:27:00,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:27:00,552 INFO L208 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] [2023-09-01 12:27:00,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 12:27:00,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-09-01 12:27:00,753 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:27:00,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:27:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1542045553, now seen corresponding path program 1 times [2023-09-01 12:27:00,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:27:00,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90090000] [2023-09-01 12:27:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:27:00,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:27:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:27:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 12:27:00,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:27:00,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90090000] [2023-09-01 12:27:00,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90090000] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:27:00,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099692413] [2023-09-01 12:27:00,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:27:00,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:27:00,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:27:00,969 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:27:00,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 12:27:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:27:01,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 12:27:01,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:27:01,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 12:27:01,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 12:27:01,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 12:27:01,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099692413] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 12:27:01,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 12:27:01,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2023-09-01 12:27:01,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047563674] [2023-09-01 12:27:01,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 12:27:01,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 12:27:01,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:27:01,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 12:27:01,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-09-01 12:27:02,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 577 [2023-09-01 12:27:02,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 275 transitions, 3844 flow. Second operand has 16 states, 16 states have (on average 246.625) internal successors, (3946), 16 states have internal predecessors, (3946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:27:02,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:27:02,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 577 [2023-09-01 12:27:02,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:27:04,736 INFO L130 PetriNetUnfolder]: 17105/26514 cut-off events. [2023-09-01 12:27:04,736 INFO L131 PetriNetUnfolder]: For 123259/123275 co-relation queries the response was YES. [2023-09-01 12:27:04,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122465 conditions, 26514 events. 17105/26514 cut-off events. For 123259/123275 co-relation queries the response was YES. Maximal size of possible extension queue 1227. Compared 187417 event pairs, 5356 based on Foata normal form. 34/26532 useless extension candidates. Maximal degree in co-relation 122435. Up to 7529 conditions per place. [2023-09-01 12:27:04,996 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 469 selfloop transitions, 217 changer transitions 142/829 dead transitions. [2023-09-01 12:27:04,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 829 transitions, 12492 flow [2023-09-01 12:27:04,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 12:27:04,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 12:27:04,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3328 transitions. [2023-09-01 12:27:04,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436741767764298 [2023-09-01 12:27:04,998 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3328 transitions. [2023-09-01 12:27:04,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3328 transitions. [2023-09-01 12:27:04,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:27:04,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3328 transitions. [2023-09-01 12:27:05,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:27:05,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 577.0) internal successors, (8078), 14 states have internal predecessors, (8078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:27:05,005 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 577.0) internal successors, (8078), 14 states have internal predecessors, (8078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:27:05,005 INFO L175 Difference]: Start difference. First operand has 150 places, 275 transitions, 3844 flow. Second operand 13 states and 3328 transitions. [2023-09-01 12:27:05,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 829 transitions, 12492 flow [2023-09-01 12:27:05,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 829 transitions, 12421 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 12:27:05,852 INFO L231 Difference]: Finished difference. Result has 165 places, 383 transitions, 6043 flow [2023-09-01 12:27:05,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=3811, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6043, PETRI_PLACES=165, PETRI_TRANSITIONS=383} [2023-09-01 12:27:05,853 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 127 predicate places. [2023-09-01 12:27:05,853 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 383 transitions, 6043 flow [2023-09-01 12:27:05,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 246.625) internal successors, (3946), 16 states have internal predecessors, (3946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:27:05,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:27:05,854 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:27:05,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 12:27:06,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:27:06,054 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:27:06,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:27:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1827772355, now seen corresponding path program 1 times [2023-09-01 12:27:06,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:27:06,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513341924] [2023-09-01 12:27:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:27:06,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:27:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:27:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:27:06,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:27:06,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513341924] [2023-09-01 12:27:06,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513341924] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:27:06,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693295134] [2023-09-01 12:27:06,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:27:06,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:27:06,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:27:06,254 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:27:06,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 12:27:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:27:06,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 12:27:06,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:27:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:27:06,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 12:27:06,723 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:27:06,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693295134] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 12:27:06,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 12:27:06,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-09-01 12:27:06,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413832775] [2023-09-01 12:27:06,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 12:27:06,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-09-01 12:27:06,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:27:06,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-09-01 12:27:06,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-09-01 12:27:07,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 577 [2023-09-01 12:27:07,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 383 transitions, 6043 flow. Second operand has 22 states, 22 states have (on average 247.5909090909091) internal successors, (5447), 22 states have internal predecessors, (5447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:27:07,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:27:07,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 577 [2023-09-01 12:27:07,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:27:11,083 INFO L130 PetriNetUnfolder]: 18381/28179 cut-off events. [2023-09-01 12:27:11,083 INFO L131 PetriNetUnfolder]: For 175039/175123 co-relation queries the response was YES. [2023-09-01 12:27:11,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130704 conditions, 28179 events. 18381/28179 cut-off events. For 175039/175123 co-relation queries the response was YES. Maximal size of possible extension queue 1225. Compared 199789 event pairs, 3835 based on Foata normal form. 156/28311 useless extension candidates. Maximal degree in co-relation 130667. Up to 9270 conditions per place. [2023-09-01 12:27:11,294 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 874 selfloop transitions, 40 changer transitions 0/915 dead transitions. [2023-09-01 12:27:11,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 915 transitions, 15137 flow [2023-09-01 12:27:11,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 12:27:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 12:27:11,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4615 transitions. [2023-09-01 12:27:11,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4443481609859426 [2023-09-01 12:27:11,299 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4615 transitions. [2023-09-01 12:27:11,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4615 transitions. [2023-09-01 12:27:11,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:27:11,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4615 transitions. [2023-09-01 12:27:11,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 256.3888888888889) internal successors, (4615), 18 states have internal predecessors, (4615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:27:11,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 577.0) internal successors, (10963), 19 states have internal predecessors, (10963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:27:11,307 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 577.0) internal successors, (10963), 19 states have internal predecessors, (10963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:27:11,308 INFO L175 Difference]: Start difference. First operand has 165 places, 383 transitions, 6043 flow. Second operand 18 states and 4615 transitions. [2023-09-01 12:27:11,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 915 transitions, 15137 flow [2023-09-01 12:27:11,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 915 transitions, 14736 flow, removed 56 selfloop flow, removed 4 redundant places. [2023-09-01 12:27:11,712 INFO L231 Difference]: Finished difference. Result has 181 places, 408 transitions, 6348 flow [2023-09-01 12:27:11,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=5852, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6348, PETRI_PLACES=181, PETRI_TRANSITIONS=408} [2023-09-01 12:27:11,713 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 143 predicate places. [2023-09-01 12:27:11,713 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 408 transitions, 6348 flow [2023-09-01 12:27:11,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 247.5909090909091) internal successors, (5447), 22 states have internal predecessors, (5447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:27:11,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:27:11,714 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:27:11,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 12:27:11,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:27:11,914 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:27:11,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:27:11,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1055410229, now seen corresponding path program 1 times [2023-09-01 12:27:11,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:27:11,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615445317] [2023-09-01 12:27:11,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:27:11,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:27:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:27:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:27:13,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:27:13,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615445317] [2023-09-01 12:27:13,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615445317] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:27:13,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790386199] [2023-09-01 12:27:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:27:13,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:27:13,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:27:13,076 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:27:13,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 12:27:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:27:13,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 58 conjunts are in the unsatisfiable core [2023-09-01 12:27:13,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:27:13,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 12:27:13,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 12:27:13,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 12:27:13,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:27:13,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:27:13,976 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 12:27:13,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2023-09-01 12:27:14,536 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:27:14,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 107 treesize of output 131 [2023-09-01 12:27:14,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:27:14,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 12:27:16,040 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:27:16,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 65 [2023-09-01 12:27:16,063 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:27:16,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1675 treesize of output 1580 [2023-09-01 12:27:16,160 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:27:16,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1291 treesize of output 1267 [2023-09-01 12:27:16,212 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:27:16,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1014 treesize of output 894 [2023-09-01 12:27:16,259 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:27:16,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1115 treesize of output 1043 [2023-09-01 12:34:07,564 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:34:07,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 94 [2023-09-01 12:34:07,616 INFO L321 Elim1Store]: treesize reduction 15, result has 55.9 percent of original size [2023-09-01 12:34:07,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28000 treesize of output 26354 [2023-09-01 12:34:08,000 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:34:08,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2336 treesize of output 2200 [2023-09-01 12:34:08,126 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:34:08,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1963 treesize of output 1731 [2023-09-01 12:34:08,201 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:34:08,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1920 treesize of output 1864 Killed by 15