./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 TOGETHER --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 TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 01:35:53,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:35:53,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:35:53,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:35:53,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:35:53,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:35:53,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:35:53,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:35:53,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:35:53,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:35:53,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:35:53,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:35:53,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:35:53,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:35:53,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:35:53,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:35:53,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:35:53,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:35:53,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:35:53,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:35:53,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:35:53,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:35:53,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:35:53,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:35:53,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:35:53,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:35:53,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:35:53,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:35:53,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:35:53,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:35:53,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:35:53,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:35:53,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:35:53,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:35:53,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:35:53,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:35:53,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:35:53,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:35:53,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:35:53,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:35:53,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:35:53,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:35:53,991 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:35:53,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:35:53,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:35:53,993 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:35:53,994 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:35:53,994 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:35:53,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:35:53,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:35:53,995 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:35:53,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:35:53,996 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:35:53,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:35:53,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:35:53,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:35:53,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:35:53,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:35:53,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:35:53,997 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:35:53,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:35:53,998 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:35:53,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:35:53,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:35:53,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:35:53,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:35:53,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:35:53,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:35:53,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:35:53,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:35:53,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:35:54,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:35:54,000 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:35:54,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:35:54,000 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:35:54,001 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:35:54,001 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:35:54,001 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:35:54,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:35:54,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:35:54,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:35:54,304 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:35:54,305 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:35:54,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2023-08-31 01:35:55,483 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:35:55,660 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:35:55,660 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2023-08-31 01:35:55,665 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e7d0ebd4/10f78803e867448c834b45c1734c5fdf/FLAGe4cfc5055 [2023-08-31 01:35:55,677 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e7d0ebd4/10f78803e867448c834b45c1734c5fdf [2023-08-31 01:35:55,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:35:55,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:35:55,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:35:55,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:35:55,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:35:55,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:35:55" (1/1) ... [2023-08-31 01:35:55,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1742ff50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:35:55, skipping insertion in model container [2023-08-31 01:35:55,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:35:55" (1/1) ... [2023-08-31 01:35:55,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:35:55,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:35:55,855 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] [2023-08-31 01:35:55,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:35:55,872 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:35:55,896 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] [2023-08-31 01:35:55,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:35:55,917 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:35:55,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:35:55 WrapperNode [2023-08-31 01:35:55,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:35:55,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:35:55,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:35:55,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:35:55,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:35:55" (1/1) ... [2023-08-31 01:35:55,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:35:55" (1/1) ... [2023-08-31 01:35:55,975 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 181 [2023-08-31 01:35:55,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:35:55,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:35:55,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:35:55,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:35:55,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:35:55" (1/1) ... [2023-08-31 01:35:55,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:35:55" (1/1) ... [2023-08-31 01:35:55,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:35:55" (1/1) ... [2023-08-31 01:35:56,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:35:55" (1/1) ... [2023-08-31 01:35:56,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:35:55" (1/1) ... [2023-08-31 01:35:56,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:35:55" (1/1) ... [2023-08-31 01:35:56,032 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:35:55" (1/1) ... [2023-08-31 01:35:56,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:35:55" (1/1) ... [2023-08-31 01:35:56,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:35:56,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:35:56,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:35:56,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:35:56,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:35:55" (1/1) ... [2023-08-31 01:35:56,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:35:56,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:35:56,078 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) [2023-08-31 01:35:56,110 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 [2023-08-31 01:35:56,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:35:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:35:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:35:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:35:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:35:56,127 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:35:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:35:56,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:35:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 01:35:56,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 01:35:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:35:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 01:35:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:35:56,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:35:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:35:56,130 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 01:35:56,290 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:35:56,292 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:35:56,660 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:35:56,669 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:35:56,669 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-31 01:35:56,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:35:56 BoogieIcfgContainer [2023-08-31 01:35:56,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:35:56,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:35:56,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:35:56,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:35:56,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:35:55" (1/3) ... [2023-08-31 01:35:56,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d3ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:35:56, skipping insertion in model container [2023-08-31 01:35:56,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:35:55" (2/3) ... [2023-08-31 01:35:56,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d3ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:35:56, skipping insertion in model container [2023-08-31 01:35:56,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:35:56" (3/3) ... [2023-08-31 01:35:56,678 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2023-08-31 01:35:56,684 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:35:56,692 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:35:56,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:35:56,693 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:35:56,817 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 01:35:56,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 291 transitions, 606 flow [2023-08-31 01:35:57,008 INFO L130 PetriNetUnfolder]: 28/288 cut-off events. [2023-08-31 01:35:57,010 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:35:57,019 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. [2023-08-31 01:35:57,020 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 291 transitions, 606 flow [2023-08-31 01:35:57,032 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 278 transitions, 574 flow [2023-08-31 01:35:57,037 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:35:57,046 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 278 transitions, 574 flow [2023-08-31 01:35:57,049 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 278 transitions, 574 flow [2023-08-31 01:35:57,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 278 transitions, 574 flow [2023-08-31 01:35:57,110 INFO L130 PetriNetUnfolder]: 28/278 cut-off events. [2023-08-31 01:35:57,110 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:35:57,111 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. [2023-08-31 01:35:57,116 INFO L119 LiptonReduction]: Number of co-enabled transitions 7560 [2023-08-31 01:36:05,266 INFO L134 LiptonReduction]: Checked pairs total: 9572 [2023-08-31 01:36:05,267 INFO L136 LiptonReduction]: Total number of compositions: 286 [2023-08-31 01:36:05,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:36:05,286 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;@2e55a489, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:36:05,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 01:36:05,293 INFO L130 PetriNetUnfolder]: 11/38 cut-off events. [2023-08-31 01:36:05,293 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:36:05,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:05,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:36:05,294 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)] === [2023-08-31 01:36:05,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:05,299 INFO L85 PathProgramCache]: Analyzing trace with hash -198049977, now seen corresponding path program 1 times [2023-08-31 01:36:05,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:05,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575250306] [2023-08-31 01:36:05,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:05,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:06,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:36:06,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:06,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575250306] [2023-08-31 01:36:06,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575250306] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:06,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:06,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:06,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179029217] [2023-08-31 01:36:06,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:06,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:06,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:06,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:06,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:06,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 577 [2023-08-31 01:36:06,263 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) [2023-08-31 01:36:06,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:06,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 577 [2023-08-31 01:36:06,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:06,665 INFO L130 PetriNetUnfolder]: 1171/1617 cut-off events. [2023-08-31 01:36:06,666 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2023-08-31 01:36:06,670 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. [2023-08-31 01:36:06,679 INFO L137 encePairwiseOnDemand]: 566/577 looper letters, 100 selfloop transitions, 18 changer transitions 2/121 dead transitions. [2023-08-31 01:36:06,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 121 transitions, 539 flow [2023-08-31 01:36:06,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:36:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:36:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1878 transitions. [2023-08-31 01:36:06,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649665758851201 [2023-08-31 01:36:06,705 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1878 transitions. [2023-08-31 01:36:06,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1878 transitions. [2023-08-31 01:36:06,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:06,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1878 transitions. [2023-08-31 01:36:06,718 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) [2023-08-31 01:36:06,728 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) [2023-08-31 01:36:06,730 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) [2023-08-31 01:36:06,746 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 96 flow. Second operand 7 states and 1878 transitions. [2023-08-31 01:36:06,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 121 transitions, 539 flow [2023-08-31 01:36:06,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 121 transitions, 501 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 01:36:06,757 INFO L231 Difference]: Finished difference. Result has 42 places, 55 transitions, 196 flow [2023-08-31 01:36:06,759 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} [2023-08-31 01:36:06,762 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-08-31 01:36:06,763 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 55 transitions, 196 flow [2023-08-31 01:36:06,764 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) [2023-08-31 01:36:06,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:06,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:36:06,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:36:06,766 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)] === [2023-08-31 01:36:06,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:06,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1928900777, now seen corresponding path program 2 times [2023-08-31 01:36:06,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:06,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251982668] [2023-08-31 01:36:06,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:06,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:07,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:36:07,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:07,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251982668] [2023-08-31 01:36:07,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251982668] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:07,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:07,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:07,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012828718] [2023-08-31 01:36:07,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:07,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:07,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:07,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:07,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:07,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 577 [2023-08-31 01:36:07,168 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) [2023-08-31 01:36:07,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:07,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 577 [2023-08-31 01:36:07,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:07,589 INFO L130 PetriNetUnfolder]: 1367/1957 cut-off events. [2023-08-31 01:36:07,589 INFO L131 PetriNetUnfolder]: For 694/703 co-relation queries the response was YES. [2023-08-31 01:36:07,592 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. [2023-08-31 01:36:07,600 INFO L137 encePairwiseOnDemand]: 565/577 looper letters, 114 selfloop transitions, 30 changer transitions 1/146 dead transitions. [2023-08-31 01:36:07,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 146 transitions, 760 flow [2023-08-31 01:36:07,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:36:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:36:07,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1887 transitions. [2023-08-31 01:36:07,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46719485021044815 [2023-08-31 01:36:07,605 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1887 transitions. [2023-08-31 01:36:07,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1887 transitions. [2023-08-31 01:36:07,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:07,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1887 transitions. [2023-08-31 01:36:07,610 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) [2023-08-31 01:36:07,617 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) [2023-08-31 01:36:07,619 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) [2023-08-31 01:36:07,619 INFO L175 Difference]: Start difference. First operand has 42 places, 55 transitions, 196 flow. Second operand 7 states and 1887 transitions. [2023-08-31 01:36:07,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 146 transitions, 760 flow [2023-08-31 01:36:07,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 146 transitions, 754 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-31 01:36:07,626 INFO L231 Difference]: Finished difference. Result has 51 places, 77 transitions, 409 flow [2023-08-31 01:36:07,626 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} [2023-08-31 01:36:07,627 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-08-31 01:36:07,627 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 77 transitions, 409 flow [2023-08-31 01:36:07,628 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) [2023-08-31 01:36:07,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:07,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:36:07,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 01:36:07,629 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)] === [2023-08-31 01:36:07,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:07,629 INFO L85 PathProgramCache]: Analyzing trace with hash 178772231, now seen corresponding path program 3 times [2023-08-31 01:36:07,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:07,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319855506] [2023-08-31 01:36:07,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:07,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:36:07,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:07,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319855506] [2023-08-31 01:36:07,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319855506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:07,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:07,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:07,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350553070] [2023-08-31 01:36:07,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:07,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:07,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:07,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:07,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:07,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 577 [2023-08-31 01:36:07,971 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) [2023-08-31 01:36:07,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:07,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 577 [2023-08-31 01:36:07,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:08,380 INFO L130 PetriNetUnfolder]: 1591/2329 cut-off events. [2023-08-31 01:36:08,381 INFO L131 PetriNetUnfolder]: For 2804/2855 co-relation queries the response was YES. [2023-08-31 01:36:08,385 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. [2023-08-31 01:36:08,394 INFO L137 encePairwiseOnDemand]: 571/577 looper letters, 106 selfloop transitions, 12 changer transitions 2/121 dead transitions. [2023-08-31 01:36:08,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 121 transitions, 815 flow [2023-08-31 01:36:08,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:36:08,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:36:08,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1337 transitions. [2023-08-31 01:36:08,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634315424610052 [2023-08-31 01:36:08,398 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1337 transitions. [2023-08-31 01:36:08,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1337 transitions. [2023-08-31 01:36:08,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:08,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1337 transitions. [2023-08-31 01:36:08,402 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) [2023-08-31 01:36:08,407 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) [2023-08-31 01:36:08,409 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) [2023-08-31 01:36:08,409 INFO L175 Difference]: Start difference. First operand has 51 places, 77 transitions, 409 flow. Second operand 5 states and 1337 transitions. [2023-08-31 01:36:08,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 121 transitions, 815 flow [2023-08-31 01:36:08,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 121 transitions, 799 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-31 01:36:08,431 INFO L231 Difference]: Finished difference. Result has 58 places, 80 transitions, 469 flow [2023-08-31 01:36:08,431 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} [2023-08-31 01:36:08,432 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-08-31 01:36:08,432 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 80 transitions, 469 flow [2023-08-31 01:36:08,433 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) [2023-08-31 01:36:08,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:08,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:36:08,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 01:36:08,434 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)] === [2023-08-31 01:36:08,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:08,434 INFO L85 PathProgramCache]: Analyzing trace with hash -199425411, now seen corresponding path program 4 times [2023-08-31 01:36:08,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:08,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483364465] [2023-08-31 01:36:08,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:08,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:36:08,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:08,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483364465] [2023-08-31 01:36:08,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483364465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:08,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:08,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:08,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374229079] [2023-08-31 01:36:08,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:08,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:08,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:08,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:08,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:08,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 577 [2023-08-31 01:36:08,761 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) [2023-08-31 01:36:08,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:08,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 577 [2023-08-31 01:36:08,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:09,187 INFO L130 PetriNetUnfolder]: 1644/2403 cut-off events. [2023-08-31 01:36:09,187 INFO L131 PetriNetUnfolder]: For 3444/3506 co-relation queries the response was YES. [2023-08-31 01:36:09,192 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. [2023-08-31 01:36:09,204 INFO L137 encePairwiseOnDemand]: 565/577 looper letters, 109 selfloop transitions, 33 changer transitions 1/144 dead transitions. [2023-08-31 01:36:09,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 144 transitions, 974 flow [2023-08-31 01:36:09,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:36:09,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:36:09,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1614 transitions. [2023-08-31 01:36:09,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662045060658579 [2023-08-31 01:36:09,210 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1614 transitions. [2023-08-31 01:36:09,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1614 transitions. [2023-08-31 01:36:09,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:09,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1614 transitions. [2023-08-31 01:36:09,215 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) [2023-08-31 01:36:09,220 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) [2023-08-31 01:36:09,222 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) [2023-08-31 01:36:09,222 INFO L175 Difference]: Start difference. First operand has 58 places, 80 transitions, 469 flow. Second operand 6 states and 1614 transitions. [2023-08-31 01:36:09,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 144 transitions, 974 flow [2023-08-31 01:36:09,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 144 transitions, 954 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-31 01:36:09,246 INFO L231 Difference]: Finished difference. Result has 65 places, 88 transitions, 633 flow [2023-08-31 01:36:09,246 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} [2023-08-31 01:36:09,247 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 27 predicate places. [2023-08-31 01:36:09,247 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 88 transitions, 633 flow [2023-08-31 01:36:09,247 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) [2023-08-31 01:36:09,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:09,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:36:09,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 01:36:09,248 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)] === [2023-08-31 01:36:09,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:09,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1670298909, now seen corresponding path program 5 times [2023-08-31 01:36:09,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:09,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053263590] [2023-08-31 01:36:09,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:09,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:36:09,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:09,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053263590] [2023-08-31 01:36:09,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053263590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:09,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:09,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:09,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9733669] [2023-08-31 01:36:09,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:09,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:09,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:09,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:09,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:09,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 577 [2023-08-31 01:36:09,528 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) [2023-08-31 01:36:09,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:09,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 577 [2023-08-31 01:36:09,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:09,964 INFO L130 PetriNetUnfolder]: 1738/2562 cut-off events. [2023-08-31 01:36:09,964 INFO L131 PetriNetUnfolder]: For 6258/6309 co-relation queries the response was YES. [2023-08-31 01:36:09,970 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. [2023-08-31 01:36:09,982 INFO L137 encePairwiseOnDemand]: 565/577 looper letters, 138 selfloop transitions, 49 changer transitions 3/191 dead transitions. [2023-08-31 01:36:09,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 191 transitions, 1526 flow [2023-08-31 01:36:09,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:36:09,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:36:09,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1883 transitions. [2023-08-31 01:36:09,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662045060658579 [2023-08-31 01:36:09,988 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1883 transitions. [2023-08-31 01:36:09,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1883 transitions. [2023-08-31 01:36:09,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:09,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1883 transitions. [2023-08-31 01:36:09,993 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) [2023-08-31 01:36:09,999 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) [2023-08-31 01:36:10,000 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) [2023-08-31 01:36:10,000 INFO L175 Difference]: Start difference. First operand has 65 places, 88 transitions, 633 flow. Second operand 7 states and 1883 transitions. [2023-08-31 01:36:10,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 191 transitions, 1526 flow [2023-08-31 01:36:10,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 191 transitions, 1447 flow, removed 32 selfloop flow, removed 1 redundant places. [2023-08-31 01:36:10,044 INFO L231 Difference]: Finished difference. Result has 74 places, 115 transitions, 1022 flow [2023-08-31 01:36:10,044 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} [2023-08-31 01:36:10,047 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 36 predicate places. [2023-08-31 01:36:10,047 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 115 transitions, 1022 flow [2023-08-31 01:36:10,048 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) [2023-08-31 01:36:10,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:10,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:36:10,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 01:36:10,048 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)] === [2023-08-31 01:36:10,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:10,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1323803525, now seen corresponding path program 6 times [2023-08-31 01:36:10,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:10,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536397987] [2023-08-31 01:36:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:10,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:36:10,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:10,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536397987] [2023-08-31 01:36:10,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536397987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:10,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:10,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:10,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242793103] [2023-08-31 01:36:10,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:10,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:10,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:10,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:10,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:10,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 577 [2023-08-31 01:36:10,378 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) [2023-08-31 01:36:10,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:10,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 577 [2023-08-31 01:36:10,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:10,881 INFO L130 PetriNetUnfolder]: 1764/2587 cut-off events. [2023-08-31 01:36:10,881 INFO L131 PetriNetUnfolder]: For 6995/7076 co-relation queries the response was YES. [2023-08-31 01:36:10,890 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. [2023-08-31 01:36:10,906 INFO L137 encePairwiseOnDemand]: 565/577 looper letters, 141 selfloop transitions, 53 changer transitions 1/196 dead transitions. [2023-08-31 01:36:10,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 196 transitions, 1737 flow [2023-08-31 01:36:10,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:36:10,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:36:10,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1889 transitions. [2023-08-31 01:36:10,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46769002228274326 [2023-08-31 01:36:10,912 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1889 transitions. [2023-08-31 01:36:10,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1889 transitions. [2023-08-31 01:36:10,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:10,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1889 transitions. [2023-08-31 01:36:10,964 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) [2023-08-31 01:36:10,971 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) [2023-08-31 01:36:10,973 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) [2023-08-31 01:36:10,973 INFO L175 Difference]: Start difference. First operand has 74 places, 115 transitions, 1022 flow. Second operand 7 states and 1889 transitions. [2023-08-31 01:36:10,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 196 transitions, 1737 flow [2023-08-31 01:36:11,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 196 transitions, 1679 flow, removed 29 selfloop flow, removed 0 redundant places. [2023-08-31 01:36:11,034 INFO L231 Difference]: Finished difference. Result has 83 places, 122 transitions, 1217 flow [2023-08-31 01:36:11,034 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} [2023-08-31 01:36:11,037 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 45 predicate places. [2023-08-31 01:36:11,037 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 122 transitions, 1217 flow [2023-08-31 01:36:11,038 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) [2023-08-31 01:36:11,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:11,038 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] [2023-08-31 01:36:11,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 01:36:11,039 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)] === [2023-08-31 01:36:11,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:11,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1753561899, now seen corresponding path program 1 times [2023-08-31 01:36:11,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:11,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587833445] [2023-08-31 01:36:11,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:11,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:36:11,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:11,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587833445] [2023-08-31 01:36:11,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587833445] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:11,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:11,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:36:11,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870492947] [2023-08-31 01:36:11,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:11,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:36:11,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:11,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:36:11,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:36:11,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 577 [2023-08-31 01:36:11,428 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) [2023-08-31 01:36:11,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:11,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 577 [2023-08-31 01:36:11,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:12,282 INFO L130 PetriNetUnfolder]: 3676/5509 cut-off events. [2023-08-31 01:36:12,282 INFO L131 PetriNetUnfolder]: For 25107/25147 co-relation queries the response was YES. [2023-08-31 01:36:12,300 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. [2023-08-31 01:36:12,326 INFO L137 encePairwiseOnDemand]: 568/577 looper letters, 240 selfloop transitions, 64 changer transitions 23/328 dead transitions. [2023-08-31 01:36:12,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 328 transitions, 3666 flow [2023-08-31 01:36:12,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:36:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:36:12,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2157 transitions. [2023-08-31 01:36:12,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46728769497400346 [2023-08-31 01:36:12,333 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2157 transitions. [2023-08-31 01:36:12,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2157 transitions. [2023-08-31 01:36:12,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:12,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2157 transitions. [2023-08-31 01:36:12,339 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) [2023-08-31 01:36:12,346 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) [2023-08-31 01:36:12,348 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) [2023-08-31 01:36:12,348 INFO L175 Difference]: Start difference. First operand has 83 places, 122 transitions, 1217 flow. Second operand 8 states and 2157 transitions. [2023-08-31 01:36:12,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 328 transitions, 3666 flow [2023-08-31 01:36:12,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 328 transitions, 3472 flow, removed 30 selfloop flow, removed 3 redundant places. [2023-08-31 01:36:12,554 INFO L231 Difference]: Finished difference. Result has 90 places, 150 transitions, 1605 flow [2023-08-31 01:36:12,554 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} [2023-08-31 01:36:12,555 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 52 predicate places. [2023-08-31 01:36:12,555 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 150 transitions, 1605 flow [2023-08-31 01:36:12,556 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) [2023-08-31 01:36:12,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:12,556 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] [2023-08-31 01:36:12,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 01:36:12,557 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)] === [2023-08-31 01:36:12,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:12,557 INFO L85 PathProgramCache]: Analyzing trace with hash 814884584, now seen corresponding path program 1 times [2023-08-31 01:36:12,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:12,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685512699] [2023-08-31 01:36:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:12,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:36:12,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:12,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685512699] [2023-08-31 01:36:12,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685512699] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:12,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:12,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:12,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239594506] [2023-08-31 01:36:12,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:12,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:12,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:12,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:12,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:12,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 577 [2023-08-31 01:36:12,778 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) [2023-08-31 01:36:12,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:12,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 577 [2023-08-31 01:36:12,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:13,543 INFO L130 PetriNetUnfolder]: 3414/5079 cut-off events. [2023-08-31 01:36:13,543 INFO L131 PetriNetUnfolder]: For 21837/21949 co-relation queries the response was YES. [2023-08-31 01:36:13,564 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. [2023-08-31 01:36:13,588 INFO L137 encePairwiseOnDemand]: 573/577 looper letters, 158 selfloop transitions, 15 changer transitions 13/187 dead transitions. [2023-08-31 01:36:13,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 187 transitions, 2120 flow [2023-08-31 01:36:13,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:36:13,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:36:13,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1356 transitions. [2023-08-31 01:36:13,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47001733102253035 [2023-08-31 01:36:13,593 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1356 transitions. [2023-08-31 01:36:13,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1356 transitions. [2023-08-31 01:36:13,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:13,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1356 transitions. [2023-08-31 01:36:13,596 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) [2023-08-31 01:36:13,601 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) [2023-08-31 01:36:13,601 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) [2023-08-31 01:36:13,602 INFO L175 Difference]: Start difference. First operand has 90 places, 150 transitions, 1605 flow. Second operand 5 states and 1356 transitions. [2023-08-31 01:36:13,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 187 transitions, 2120 flow [2023-08-31 01:36:13,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 187 transitions, 2059 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-31 01:36:13,805 INFO L231 Difference]: Finished difference. Result has 93 places, 146 transitions, 1510 flow [2023-08-31 01:36:13,805 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} [2023-08-31 01:36:13,807 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 55 predicate places. [2023-08-31 01:36:13,807 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 146 transitions, 1510 flow [2023-08-31 01:36:13,808 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) [2023-08-31 01:36:13,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:13,808 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] [2023-08-31 01:36:13,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 01:36:13,808 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)] === [2023-08-31 01:36:13,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:13,809 INFO L85 PathProgramCache]: Analyzing trace with hash 5291322, now seen corresponding path program 2 times [2023-08-31 01:36:13,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:13,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792357751] [2023-08-31 01:36:13,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:13,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:14,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:36:14,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:14,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792357751] [2023-08-31 01:36:14,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792357751] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:14,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:14,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:14,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215262713] [2023-08-31 01:36:14,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:14,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:14,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:14,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:14,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:14,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-08-31 01:36:14,064 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) [2023-08-31 01:36:14,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:14,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-08-31 01:36:14,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:14,807 INFO L130 PetriNetUnfolder]: 3440/5174 cut-off events. [2023-08-31 01:36:14,808 INFO L131 PetriNetUnfolder]: For 21416/21528 co-relation queries the response was YES. [2023-08-31 01:36:14,825 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. [2023-08-31 01:36:14,845 INFO L137 encePairwiseOnDemand]: 570/577 looper letters, 172 selfloop transitions, 21 changer transitions 8/202 dead transitions. [2023-08-31 01:36:14,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 202 transitions, 2235 flow [2023-08-31 01:36:14,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:36:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:36:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1360 transitions. [2023-08-31 01:36:14,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714038128249567 [2023-08-31 01:36:14,849 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1360 transitions. [2023-08-31 01:36:14,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1360 transitions. [2023-08-31 01:36:14,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:14,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1360 transitions. [2023-08-31 01:36:14,853 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) [2023-08-31 01:36:14,856 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) [2023-08-31 01:36:14,857 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) [2023-08-31 01:36:14,857 INFO L175 Difference]: Start difference. First operand has 93 places, 146 transitions, 1510 flow. Second operand 5 states and 1360 transitions. [2023-08-31 01:36:14,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 202 transitions, 2235 flow [2023-08-31 01:36:15,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 202 transitions, 2185 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-31 01:36:15,017 INFO L231 Difference]: Finished difference. Result has 93 places, 150 transitions, 1561 flow [2023-08-31 01:36:15,017 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} [2023-08-31 01:36:15,018 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 55 predicate places. [2023-08-31 01:36:15,018 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 150 transitions, 1561 flow [2023-08-31 01:36:15,018 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) [2023-08-31 01:36:15,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:15,019 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] [2023-08-31 01:36:15,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 01:36:15,019 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)] === [2023-08-31 01:36:15,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:15,019 INFO L85 PathProgramCache]: Analyzing trace with hash 13829410, now seen corresponding path program 1 times [2023-08-31 01:36:15,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:15,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318952573] [2023-08-31 01:36:15,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:15,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:15,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:36:15,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:15,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318952573] [2023-08-31 01:36:15,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318952573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:15,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:15,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:15,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745937796] [2023-08-31 01:36:15,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:15,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:36:15,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:15,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:36:15,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:36:15,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 577 [2023-08-31 01:36:15,366 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) [2023-08-31 01:36:15,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:15,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 577 [2023-08-31 01:36:15,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:16,618 INFO L130 PetriNetUnfolder]: 6956/10082 cut-off events. [2023-08-31 01:36:16,618 INFO L131 PetriNetUnfolder]: For 40691/40998 co-relation queries the response was YES. [2023-08-31 01:36:16,652 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. [2023-08-31 01:36:16,691 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 236 selfloop transitions, 62 changer transitions 35/334 dead transitions. [2023-08-31 01:36:16,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 334 transitions, 3859 flow [2023-08-31 01:36:16,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:36:16,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:36:16,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2127 transitions. [2023-08-31 01:36:16,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46078856152513 [2023-08-31 01:36:16,696 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2127 transitions. [2023-08-31 01:36:16,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2127 transitions. [2023-08-31 01:36:16,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:16,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2127 transitions. [2023-08-31 01:36:16,701 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) [2023-08-31 01:36:16,707 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) [2023-08-31 01:36:16,707 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) [2023-08-31 01:36:16,708 INFO L175 Difference]: Start difference. First operand has 93 places, 150 transitions, 1561 flow. Second operand 8 states and 2127 transitions. [2023-08-31 01:36:16,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 334 transitions, 3859 flow [2023-08-31 01:36:17,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 334 transitions, 3798 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-08-31 01:36:17,169 INFO L231 Difference]: Finished difference. Result has 103 places, 188 transitions, 2106 flow [2023-08-31 01:36:17,170 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} [2023-08-31 01:36:17,170 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 65 predicate places. [2023-08-31 01:36:17,170 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 188 transitions, 2106 flow [2023-08-31 01:36:17,171 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) [2023-08-31 01:36:17,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:17,171 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] [2023-08-31 01:36:17,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 01:36:17,171 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)] === [2023-08-31 01:36:17,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1573728984, now seen corresponding path program 3 times [2023-08-31 01:36:17,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:17,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078118469] [2023-08-31 01:36:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:17,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:36:17,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:17,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078118469] [2023-08-31 01:36:17,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078118469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:17,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:17,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:17,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926541193] [2023-08-31 01:36:17,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:17,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:17,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:17,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:17,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:17,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-08-31 01:36:17,411 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) [2023-08-31 01:36:17,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:17,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-08-31 01:36:17,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:18,569 INFO L130 PetriNetUnfolder]: 6383/9340 cut-off events. [2023-08-31 01:36:18,569 INFO L131 PetriNetUnfolder]: For 36473/36755 co-relation queries the response was YES. [2023-08-31 01:36:18,626 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. [2023-08-31 01:36:18,669 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 177 selfloop transitions, 73 changer transitions 15/266 dead transitions. [2023-08-31 01:36:18,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 266 transitions, 3105 flow [2023-08-31 01:36:18,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:36:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:36:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1639 transitions. [2023-08-31 01:36:18,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734257654534951 [2023-08-31 01:36:18,674 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1639 transitions. [2023-08-31 01:36:18,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1639 transitions. [2023-08-31 01:36:18,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:18,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1639 transitions. [2023-08-31 01:36:18,678 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) [2023-08-31 01:36:18,682 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) [2023-08-31 01:36:18,684 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) [2023-08-31 01:36:18,684 INFO L175 Difference]: Start difference. First operand has 103 places, 188 transitions, 2106 flow. Second operand 6 states and 1639 transitions. [2023-08-31 01:36:18,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 266 transitions, 3105 flow [2023-08-31 01:36:19,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 266 transitions, 2985 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-31 01:36:19,149 INFO L231 Difference]: Finished difference. Result has 108 places, 194 transitions, 2232 flow [2023-08-31 01:36:19,149 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} [2023-08-31 01:36:19,149 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 70 predicate places. [2023-08-31 01:36:19,149 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 194 transitions, 2232 flow [2023-08-31 01:36:19,150 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) [2023-08-31 01:36:19,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:19,150 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] [2023-08-31 01:36:19,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 01:36:19,150 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)] === [2023-08-31 01:36:19,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:19,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1440072976, now seen corresponding path program 4 times [2023-08-31 01:36:19,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:19,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848483712] [2023-08-31 01:36:19,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:19,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:36:19,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:19,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848483712] [2023-08-31 01:36:19,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848483712] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:19,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:19,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:19,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299722476] [2023-08-31 01:36:19,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:19,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:19,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:19,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:19,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:19,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 577 [2023-08-31 01:36:19,447 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) [2023-08-31 01:36:19,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:19,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 577 [2023-08-31 01:36:19,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:20,464 INFO L130 PetriNetUnfolder]: 6335/9250 cut-off events. [2023-08-31 01:36:20,465 INFO L131 PetriNetUnfolder]: For 45253/45535 co-relation queries the response was YES. [2023-08-31 01:36:20,486 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. [2023-08-31 01:36:20,517 INFO L137 encePairwiseOnDemand]: 568/577 looper letters, 167 selfloop transitions, 67 changer transitions 11/246 dead transitions. [2023-08-31 01:36:20,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 246 transitions, 2925 flow [2023-08-31 01:36:20,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:36:20,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:36:20,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1634 transitions. [2023-08-31 01:36:20,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4719815135759676 [2023-08-31 01:36:20,522 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1634 transitions. [2023-08-31 01:36:20,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1634 transitions. [2023-08-31 01:36:20,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:20,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1634 transitions. [2023-08-31 01:36:20,525 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) [2023-08-31 01:36:20,529 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) [2023-08-31 01:36:20,529 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) [2023-08-31 01:36:20,530 INFO L175 Difference]: Start difference. First operand has 108 places, 194 transitions, 2232 flow. Second operand 6 states and 1634 transitions. [2023-08-31 01:36:20,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 246 transitions, 2925 flow [2023-08-31 01:36:20,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 246 transitions, 2783 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-08-31 01:36:20,956 INFO L231 Difference]: Finished difference. Result has 112 places, 192 transitions, 2190 flow [2023-08-31 01:36:20,956 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} [2023-08-31 01:36:20,957 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 74 predicate places. [2023-08-31 01:36:20,957 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 192 transitions, 2190 flow [2023-08-31 01:36:20,957 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) [2023-08-31 01:36:20,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:20,958 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] [2023-08-31 01:36:20,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 01:36:20,958 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)] === [2023-08-31 01:36:20,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:20,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1968338174, now seen corresponding path program 5 times [2023-08-31 01:36:20,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:20,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015685292] [2023-08-31 01:36:20,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:20,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:36:21,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:21,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015685292] [2023-08-31 01:36:21,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015685292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:21,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:21,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:21,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050254338] [2023-08-31 01:36:21,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:21,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:21,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:21,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:21,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:21,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 577 [2023-08-31 01:36:21,194 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) [2023-08-31 01:36:21,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:21,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 577 [2023-08-31 01:36:21,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:22,336 INFO L130 PetriNetUnfolder]: 6337/9274 cut-off events. [2023-08-31 01:36:22,336 INFO L131 PetriNetUnfolder]: For 43006/43264 co-relation queries the response was YES. [2023-08-31 01:36:22,366 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. [2023-08-31 01:36:22,397 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 192 selfloop transitions, 100 changer transitions 16/309 dead transitions. [2023-08-31 01:36:22,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 309 transitions, 3660 flow [2023-08-31 01:36:22,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:36:22,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:36:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1917 transitions. [2023-08-31 01:36:22,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47462243129487497 [2023-08-31 01:36:22,402 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1917 transitions. [2023-08-31 01:36:22,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1917 transitions. [2023-08-31 01:36:22,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:22,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1917 transitions. [2023-08-31 01:36:22,406 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) [2023-08-31 01:36:22,411 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) [2023-08-31 01:36:22,412 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) [2023-08-31 01:36:22,412 INFO L175 Difference]: Start difference. First operand has 112 places, 192 transitions, 2190 flow. Second operand 7 states and 1917 transitions. [2023-08-31 01:36:22,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 309 transitions, 3660 flow [2023-08-31 01:36:22,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 309 transitions, 3514 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-31 01:36:22,862 INFO L231 Difference]: Finished difference. Result has 113 places, 212 transitions, 2531 flow [2023-08-31 01:36:22,863 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} [2023-08-31 01:36:22,863 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 75 predicate places. [2023-08-31 01:36:22,863 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 212 transitions, 2531 flow [2023-08-31 01:36:22,864 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) [2023-08-31 01:36:22,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:22,864 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] [2023-08-31 01:36:22,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 01:36:22,864 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)] === [2023-08-31 01:36:22,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:22,865 INFO L85 PathProgramCache]: Analyzing trace with hash -59174180, now seen corresponding path program 6 times [2023-08-31 01:36:22,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:22,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446922416] [2023-08-31 01:36:22,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:22,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:36:23,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:23,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446922416] [2023-08-31 01:36:23,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446922416] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:23,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:23,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:23,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775433628] [2023-08-31 01:36:23,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:23,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:23,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:23,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:23,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:23,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 577 [2023-08-31 01:36:23,121 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) [2023-08-31 01:36:23,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:23,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 577 [2023-08-31 01:36:23,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:24,332 INFO L130 PetriNetUnfolder]: 6301/9208 cut-off events. [2023-08-31 01:36:24,332 INFO L131 PetriNetUnfolder]: For 46796/47128 co-relation queries the response was YES. [2023-08-31 01:36:24,377 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. [2023-08-31 01:36:24,408 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 199 selfloop transitions, 105 changer transitions 8/313 dead transitions. [2023-08-31 01:36:24,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 313 transitions, 3919 flow [2023-08-31 01:36:24,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:36:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:36:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1912 transitions. [2023-08-31 01:36:24,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47338450111413716 [2023-08-31 01:36:24,413 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1912 transitions. [2023-08-31 01:36:24,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1912 transitions. [2023-08-31 01:36:24,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:24,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1912 transitions. [2023-08-31 01:36:24,418 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) [2023-08-31 01:36:24,424 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) [2023-08-31 01:36:24,425 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) [2023-08-31 01:36:24,425 INFO L175 Difference]: Start difference. First operand has 113 places, 212 transitions, 2531 flow. Second operand 7 states and 1912 transitions. [2023-08-31 01:36:24,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 313 transitions, 3919 flow [2023-08-31 01:36:24,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 313 transitions, 3797 flow, removed 61 selfloop flow, removed 1 redundant places. [2023-08-31 01:36:24,903 INFO L231 Difference]: Finished difference. Result has 119 places, 234 transitions, 3029 flow [2023-08-31 01:36:24,903 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} [2023-08-31 01:36:24,904 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 81 predicate places. [2023-08-31 01:36:24,904 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 234 transitions, 3029 flow [2023-08-31 01:36:24,904 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) [2023-08-31 01:36:24,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:24,905 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] [2023-08-31 01:36:24,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 01:36:24,905 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)] === [2023-08-31 01:36:24,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:24,906 INFO L85 PathProgramCache]: Analyzing trace with hash 854842974, now seen corresponding path program 1 times [2023-08-31 01:36:24,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:24,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673865521] [2023-08-31 01:36:24,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:24,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:36:25,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:25,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673865521] [2023-08-31 01:36:25,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673865521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:25,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:25,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:25,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196438236] [2023-08-31 01:36:25,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:25,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:25,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:25,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:25,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:25,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 577 [2023-08-31 01:36:25,094 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) [2023-08-31 01:36:25,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:25,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 577 [2023-08-31 01:36:25,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:26,223 INFO L130 PetriNetUnfolder]: 6557/9869 cut-off events. [2023-08-31 01:36:26,223 INFO L131 PetriNetUnfolder]: For 65396/65412 co-relation queries the response was YES. [2023-08-31 01:36:26,253 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. [2023-08-31 01:36:26,280 INFO L137 encePairwiseOnDemand]: 571/577 looper letters, 286 selfloop transitions, 42 changer transitions 6/335 dead transitions. [2023-08-31 01:36:26,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 335 transitions, 4757 flow [2023-08-31 01:36:26,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:36:26,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:36:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1366 transitions. [2023-08-31 01:36:26,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734835355285962 [2023-08-31 01:36:26,288 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1366 transitions. [2023-08-31 01:36:26,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1366 transitions. [2023-08-31 01:36:26,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:26,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1366 transitions. [2023-08-31 01:36:26,291 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) [2023-08-31 01:36:26,295 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) [2023-08-31 01:36:26,296 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) [2023-08-31 01:36:26,296 INFO L175 Difference]: Start difference. First operand has 119 places, 234 transitions, 3029 flow. Second operand 5 states and 1366 transitions. [2023-08-31 01:36:26,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 335 transitions, 4757 flow [2023-08-31 01:36:26,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 335 transitions, 4595 flow, removed 81 selfloop flow, removed 0 redundant places. [2023-08-31 01:36:26,575 INFO L231 Difference]: Finished difference. Result has 124 places, 250 transitions, 3338 flow [2023-08-31 01:36:26,575 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} [2023-08-31 01:36:26,575 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 86 predicate places. [2023-08-31 01:36:26,575 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 250 transitions, 3338 flow [2023-08-31 01:36:26,576 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) [2023-08-31 01:36:26,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:26,576 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] [2023-08-31 01:36:26,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 01:36:26,576 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)] === [2023-08-31 01:36:26,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:26,576 INFO L85 PathProgramCache]: Analyzing trace with hash 642706158, now seen corresponding path program 2 times [2023-08-31 01:36:26,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:26,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440851582] [2023-08-31 01:36:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:26,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:26,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:36:26,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:26,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440851582] [2023-08-31 01:36:26,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440851582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:26,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:26,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:26,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188468579] [2023-08-31 01:36:26,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:26,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:26,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:26,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:26,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:26,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-08-31 01:36:26,795 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) [2023-08-31 01:36:26,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:26,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-08-31 01:36:26,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:27,917 INFO L130 PetriNetUnfolder]: 6513/9608 cut-off events. [2023-08-31 01:36:27,918 INFO L131 PetriNetUnfolder]: For 69350/69612 co-relation queries the response was YES. [2023-08-31 01:36:27,948 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. [2023-08-31 01:36:27,975 INFO L137 encePairwiseOnDemand]: 571/577 looper letters, 246 selfloop transitions, 54 changer transitions 6/307 dead transitions. [2023-08-31 01:36:27,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 307 transitions, 4334 flow [2023-08-31 01:36:27,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:36:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:36:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1361 transitions. [2023-08-31 01:36:27,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47175043327556326 [2023-08-31 01:36:27,979 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1361 transitions. [2023-08-31 01:36:27,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1361 transitions. [2023-08-31 01:36:27,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:27,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1361 transitions. [2023-08-31 01:36:27,982 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) [2023-08-31 01:36:27,985 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) [2023-08-31 01:36:27,985 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) [2023-08-31 01:36:27,986 INFO L175 Difference]: Start difference. First operand has 124 places, 250 transitions, 3338 flow. Second operand 5 states and 1361 transitions. [2023-08-31 01:36:27,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 307 transitions, 4334 flow [2023-08-31 01:36:28,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 307 transitions, 4312 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-31 01:36:28,304 INFO L231 Difference]: Finished difference. Result has 130 places, 254 transitions, 3582 flow [2023-08-31 01:36:28,305 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} [2023-08-31 01:36:28,305 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 92 predicate places. [2023-08-31 01:36:28,306 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 254 transitions, 3582 flow [2023-08-31 01:36:28,306 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) [2023-08-31 01:36:28,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:28,306 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] [2023-08-31 01:36:28,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 01:36:28,307 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)] === [2023-08-31 01:36:28,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:28,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1298038294, now seen corresponding path program 3 times [2023-08-31 01:36:28,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:28,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336852197] [2023-08-31 01:36:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:28,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:28,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:36:28,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:28,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336852197] [2023-08-31 01:36:28,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336852197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:28,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:28,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:28,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844498864] [2023-08-31 01:36:28,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:28,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:28,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:28,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:28,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:28,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-08-31 01:36:28,535 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) [2023-08-31 01:36:28,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:28,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-08-31 01:36:28,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:29,706 INFO L130 PetriNetUnfolder]: 6449/9494 cut-off events. [2023-08-31 01:36:29,706 INFO L131 PetriNetUnfolder]: For 72494/72846 co-relation queries the response was YES. [2023-08-31 01:36:29,760 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. [2023-08-31 01:36:29,792 INFO L137 encePairwiseOnDemand]: 568/577 looper letters, 228 selfloop transitions, 92 changer transitions 7/328 dead transitions. [2023-08-31 01:36:29,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 328 transitions, 4666 flow [2023-08-31 01:36:29,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:36:29,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:36:29,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1634 transitions. [2023-08-31 01:36:29,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4719815135759676 [2023-08-31 01:36:29,795 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1634 transitions. [2023-08-31 01:36:29,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1634 transitions. [2023-08-31 01:36:29,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:29,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1634 transitions. [2023-08-31 01:36:29,799 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) [2023-08-31 01:36:29,802 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) [2023-08-31 01:36:29,802 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) [2023-08-31 01:36:29,803 INFO L175 Difference]: Start difference. First operand has 130 places, 254 transitions, 3582 flow. Second operand 6 states and 1634 transitions. [2023-08-31 01:36:29,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 328 transitions, 4666 flow [2023-08-31 01:36:30,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 328 transitions, 4618 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-31 01:36:30,266 INFO L231 Difference]: Finished difference. Result has 136 places, 269 transitions, 3976 flow [2023-08-31 01:36:30,266 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} [2023-08-31 01:36:30,266 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 98 predicate places. [2023-08-31 01:36:30,266 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 269 transitions, 3976 flow [2023-08-31 01:36:30,267 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) [2023-08-31 01:36:30,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:30,267 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] [2023-08-31 01:36:30,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-31 01:36:30,267 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)] === [2023-08-31 01:36:30,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:30,268 INFO L85 PathProgramCache]: Analyzing trace with hash 283388168, now seen corresponding path program 4 times [2023-08-31 01:36:30,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:30,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324064942] [2023-08-31 01:36:30,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:30,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:30,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:36:30,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:30,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324064942] [2023-08-31 01:36:30,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324064942] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:30,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:30,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:30,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595862436] [2023-08-31 01:36:30,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:30,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:30,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:30,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:30,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:30,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-08-31 01:36:30,437 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) [2023-08-31 01:36:30,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:30,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-08-31 01:36:30,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:31,991 INFO L130 PetriNetUnfolder]: 7887/12051 cut-off events. [2023-08-31 01:36:31,991 INFO L131 PetriNetUnfolder]: For 98561/98621 co-relation queries the response was YES. [2023-08-31 01:36:32,174 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. [2023-08-31 01:36:32,206 INFO L137 encePairwiseOnDemand]: 570/577 looper letters, 388 selfloop transitions, 60 changer transitions 10/459 dead transitions. [2023-08-31 01:36:32,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 459 transitions, 7090 flow [2023-08-31 01:36:32,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:36:32,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:36:32,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1646 transitions. [2023-08-31 01:36:32,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4754477180820335 [2023-08-31 01:36:32,208 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1646 transitions. [2023-08-31 01:36:32,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1646 transitions. [2023-08-31 01:36:32,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:32,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1646 transitions. [2023-08-31 01:36:32,212 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) [2023-08-31 01:36:32,215 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) [2023-08-31 01:36:32,215 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) [2023-08-31 01:36:32,215 INFO L175 Difference]: Start difference. First operand has 136 places, 269 transitions, 3976 flow. Second operand 6 states and 1646 transitions. [2023-08-31 01:36:32,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 459 transitions, 7090 flow [2023-08-31 01:36:32,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 459 transitions, 6912 flow, removed 27 selfloop flow, removed 3 redundant places. [2023-08-31 01:36:32,548 INFO L231 Difference]: Finished difference. Result has 142 places, 294 transitions, 4499 flow [2023-08-31 01:36:32,548 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} [2023-08-31 01:36:32,549 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 104 predicate places. [2023-08-31 01:36:32,549 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 294 transitions, 4499 flow [2023-08-31 01:36:32,549 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) [2023-08-31 01:36:32,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:32,550 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] [2023-08-31 01:36:32,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-31 01:36:32,550 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)] === [2023-08-31 01:36:32,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:32,550 INFO L85 PathProgramCache]: Analyzing trace with hash 756027848, now seen corresponding path program 5 times [2023-08-31 01:36:32,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:32,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560647874] [2023-08-31 01:36:32,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:32,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:36:32,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:32,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560647874] [2023-08-31 01:36:32,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560647874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:32,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:32,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:32,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337995395] [2023-08-31 01:36:32,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:32,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:32,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:32,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:32,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:32,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-08-31 01:36:32,807 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) [2023-08-31 01:36:32,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:32,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-08-31 01:36:32,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:34,463 INFO L130 PetriNetUnfolder]: 8159/12278 cut-off events. [2023-08-31 01:36:34,463 INFO L131 PetriNetUnfolder]: For 104931/105169 co-relation queries the response was YES. [2023-08-31 01:36:34,505 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. [2023-08-31 01:36:34,542 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 326 selfloop transitions, 135 changer transitions 10/472 dead transitions. [2023-08-31 01:36:34,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 472 transitions, 7012 flow [2023-08-31 01:36:34,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:36:34,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:36:34,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2467 transitions. [2023-08-31 01:36:34,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47506258424802617 [2023-08-31 01:36:34,546 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2467 transitions. [2023-08-31 01:36:34,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2467 transitions. [2023-08-31 01:36:34,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:34,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2467 transitions. [2023-08-31 01:36:34,551 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) [2023-08-31 01:36:34,555 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) [2023-08-31 01:36:34,556 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) [2023-08-31 01:36:34,556 INFO L175 Difference]: Start difference. First operand has 142 places, 294 transitions, 4499 flow. Second operand 9 states and 2467 transitions. [2023-08-31 01:36:34,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 472 transitions, 7012 flow [2023-08-31 01:36:35,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 472 transitions, 6920 flow, removed 46 selfloop flow, removed 0 redundant places. [2023-08-31 01:36:35,295 INFO L231 Difference]: Finished difference. Result has 155 places, 303 transitions, 5014 flow [2023-08-31 01:36:35,296 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} [2023-08-31 01:36:35,296 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 117 predicate places. [2023-08-31 01:36:35,297 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 303 transitions, 5014 flow [2023-08-31 01:36:35,297 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) [2023-08-31 01:36:35,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:35,297 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] [2023-08-31 01:36:35,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-31 01:36:35,298 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)] === [2023-08-31 01:36:35,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:35,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1833268096, now seen corresponding path program 6 times [2023-08-31 01:36:35,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:35,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10874043] [2023-08-31 01:36:35,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:35,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:36:35,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:35,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10874043] [2023-08-31 01:36:35,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10874043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:35,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:35,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:35,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325225606] [2023-08-31 01:36:35,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:35,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:35,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:35,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:35,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:35,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 577 [2023-08-31 01:36:35,552 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) [2023-08-31 01:36:35,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:35,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 577 [2023-08-31 01:36:35,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:37,239 INFO L130 PetriNetUnfolder]: 8091/12156 cut-off events. [2023-08-31 01:36:37,239 INFO L131 PetriNetUnfolder]: For 117775/117984 co-relation queries the response was YES. [2023-08-31 01:36:37,347 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. [2023-08-31 01:36:37,389 INFO L137 encePairwiseOnDemand]: 568/577 looper letters, 235 selfloop transitions, 119 changer transitions 9/364 dead transitions. [2023-08-31 01:36:37,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 364 transitions, 6026 flow [2023-08-31 01:36:37,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:36:37,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:36:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1649 transitions. [2023-08-31 01:36:37,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47631426920854997 [2023-08-31 01:36:37,392 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1649 transitions. [2023-08-31 01:36:37,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1649 transitions. [2023-08-31 01:36:37,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:37,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1649 transitions. [2023-08-31 01:36:37,395 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) [2023-08-31 01:36:37,397 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) [2023-08-31 01:36:37,397 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) [2023-08-31 01:36:37,397 INFO L175 Difference]: Start difference. First operand has 155 places, 303 transitions, 5014 flow. Second operand 6 states and 1649 transitions. [2023-08-31 01:36:37,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 364 transitions, 6026 flow [2023-08-31 01:36:38,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 364 transitions, 5872 flow, removed 57 selfloop flow, removed 1 redundant places. [2023-08-31 01:36:38,539 INFO L231 Difference]: Finished difference. Result has 160 places, 295 transitions, 5016 flow [2023-08-31 01:36:38,539 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} [2023-08-31 01:36:38,539 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 122 predicate places. [2023-08-31 01:36:38,539 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 295 transitions, 5016 flow [2023-08-31 01:36:38,540 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) [2023-08-31 01:36:38,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:38,540 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] [2023-08-31 01:36:38,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-31 01:36:38,540 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)] === [2023-08-31 01:36:38,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:38,541 INFO L85 PathProgramCache]: Analyzing trace with hash 131615909, now seen corresponding path program 1 times [2023-08-31 01:36:38,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:38,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181348642] [2023-08-31 01:36:38,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:38,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:38,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:36:38,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:38,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181348642] [2023-08-31 01:36:38,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181348642] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:38,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:38,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:38,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769581684] [2023-08-31 01:36:38,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:38,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:38,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:38,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:38,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:38,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 577 [2023-08-31 01:36:38,783 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) [2023-08-31 01:36:38,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:38,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 577 [2023-08-31 01:36:38,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:40,396 INFO L130 PetriNetUnfolder]: 8453/12825 cut-off events. [2023-08-31 01:36:40,397 INFO L131 PetriNetUnfolder]: For 138600/138640 co-relation queries the response was YES. [2023-08-31 01:36:40,467 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. [2023-08-31 01:36:40,510 INFO L137 encePairwiseOnDemand]: 568/577 looper letters, 291 selfloop transitions, 118 changer transitions 7/417 dead transitions. [2023-08-31 01:36:40,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 417 transitions, 7121 flow [2023-08-31 01:36:40,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:36:40,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:36:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1913 transitions. [2023-08-31 01:36:40,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4736320871502847 [2023-08-31 01:36:40,512 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1913 transitions. [2023-08-31 01:36:40,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1913 transitions. [2023-08-31 01:36:40,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:40,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1913 transitions. [2023-08-31 01:36:40,514 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) [2023-08-31 01:36:40,516 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) [2023-08-31 01:36:40,516 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) [2023-08-31 01:36:40,516 INFO L175 Difference]: Start difference. First operand has 160 places, 295 transitions, 5016 flow. Second operand 7 states and 1913 transitions. [2023-08-31 01:36:40,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 417 transitions, 7121 flow [2023-08-31 01:36:41,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 417 transitions, 6857 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-08-31 01:36:41,635 INFO L231 Difference]: Finished difference. Result has 165 places, 325 transitions, 5624 flow [2023-08-31 01:36:41,635 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} [2023-08-31 01:36:41,635 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 127 predicate places. [2023-08-31 01:36:41,635 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 325 transitions, 5624 flow [2023-08-31 01:36:41,636 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) [2023-08-31 01:36:41,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:41,636 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] [2023-08-31 01:36:41,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-31 01:36:41,636 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)] === [2023-08-31 01:36:41,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:41,636 INFO L85 PathProgramCache]: Analyzing trace with hash 80818935, now seen corresponding path program 2 times [2023-08-31 01:36:41,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:41,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547214929] [2023-08-31 01:36:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:41,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:36:41,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:41,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547214929] [2023-08-31 01:36:41,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547214929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:41,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:41,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:41,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299418565] [2023-08-31 01:36:41,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:41,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:41,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:41,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:41,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:41,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-08-31 01:36:41,842 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) [2023-08-31 01:36:41,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:41,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-08-31 01:36:41,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:43,680 INFO L130 PetriNetUnfolder]: 9959/15297 cut-off events. [2023-08-31 01:36:43,680 INFO L131 PetriNetUnfolder]: For 148588/148648 co-relation queries the response was YES. [2023-08-31 01:36:43,778 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. [2023-08-31 01:36:43,834 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 363 selfloop transitions, 139 changer transitions 9/512 dead transitions. [2023-08-31 01:36:43,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 512 transitions, 8601 flow [2023-08-31 01:36:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:36:43,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:36:43,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2464 transitions. [2023-08-31 01:36:43,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47448488349701523 [2023-08-31 01:36:43,836 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2464 transitions. [2023-08-31 01:36:43,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2464 transitions. [2023-08-31 01:36:43,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:43,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2464 transitions. [2023-08-31 01:36:43,839 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) [2023-08-31 01:36:43,841 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) [2023-08-31 01:36:43,842 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) [2023-08-31 01:36:43,842 INFO L175 Difference]: Start difference. First operand has 165 places, 325 transitions, 5624 flow. Second operand 9 states and 2464 transitions. [2023-08-31 01:36:43,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 512 transitions, 8601 flow [2023-08-31 01:36:45,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 512 transitions, 8455 flow, removed 36 selfloop flow, removed 3 redundant places. [2023-08-31 01:36:45,324 INFO L231 Difference]: Finished difference. Result has 174 places, 349 transitions, 6398 flow [2023-08-31 01:36:45,324 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} [2023-08-31 01:36:45,325 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 136 predicate places. [2023-08-31 01:36:45,325 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 349 transitions, 6398 flow [2023-08-31 01:36:45,325 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) [2023-08-31 01:36:45,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:45,325 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] [2023-08-31 01:36:45,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-31 01:36:45,326 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)] === [2023-08-31 01:36:45,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:45,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1904587171, now seen corresponding path program 3 times [2023-08-31 01:36:45,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:45,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603364243] [2023-08-31 01:36:45,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:45,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:45,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:36:45,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:45,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603364243] [2023-08-31 01:36:45,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603364243] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:45,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:45,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:45,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456978463] [2023-08-31 01:36:45,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:45,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:45,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:45,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:45,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:45,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-08-31 01:36:45,548 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) [2023-08-31 01:36:45,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:45,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-08-31 01:36:45,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:47,368 INFO L130 PetriNetUnfolder]: 9879/15110 cut-off events. [2023-08-31 01:36:47,368 INFO L131 PetriNetUnfolder]: For 173146/173186 co-relation queries the response was YES. [2023-08-31 01:36:47,451 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. [2023-08-31 01:36:47,500 INFO L137 encePairwiseOnDemand]: 568/577 looper letters, 305 selfloop transitions, 114 changer transitions 7/427 dead transitions. [2023-08-31 01:36:47,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 427 transitions, 7704 flow [2023-08-31 01:36:47,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:36:47,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:36:47,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1905 transitions. [2023-08-31 01:36:47,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47165139886110424 [2023-08-31 01:36:47,502 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1905 transitions. [2023-08-31 01:36:47,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1905 transitions. [2023-08-31 01:36:47,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:47,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1905 transitions. [2023-08-31 01:36:47,504 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) [2023-08-31 01:36:47,505 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) [2023-08-31 01:36:47,506 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) [2023-08-31 01:36:47,506 INFO L175 Difference]: Start difference. First operand has 174 places, 349 transitions, 6398 flow. Second operand 7 states and 1905 transitions. [2023-08-31 01:36:47,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 427 transitions, 7704 flow [2023-08-31 01:36:49,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 427 transitions, 7464 flow, removed 43 selfloop flow, removed 6 redundant places. [2023-08-31 01:36:49,355 INFO L231 Difference]: Finished difference. Result has 175 places, 347 transitions, 6347 flow [2023-08-31 01:36:49,356 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} [2023-08-31 01:36:49,356 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 137 predicate places. [2023-08-31 01:36:49,356 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 347 transitions, 6347 flow [2023-08-31 01:36:49,357 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) [2023-08-31 01:36:49,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:49,357 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] [2023-08-31 01:36:49,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-31 01:36:49,357 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)] === [2023-08-31 01:36:49,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:49,357 INFO L85 PathProgramCache]: Analyzing trace with hash -682005771, now seen corresponding path program 4 times [2023-08-31 01:36:49,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:49,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106204514] [2023-08-31 01:36:49,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:49,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:36:49,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:49,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106204514] [2023-08-31 01:36:49,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106204514] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:49,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:49,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:49,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5895361] [2023-08-31 01:36:49,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:49,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:49,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:49,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:49,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:49,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-08-31 01:36:49,531 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) [2023-08-31 01:36:49,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:49,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-08-31 01:36:49,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:51,333 INFO L130 PetriNetUnfolder]: 9795/14976 cut-off events. [2023-08-31 01:36:51,334 INFO L131 PetriNetUnfolder]: For 167056/167096 co-relation queries the response was YES. [2023-08-31 01:36:51,436 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. [2023-08-31 01:36:51,488 INFO L137 encePairwiseOnDemand]: 571/577 looper letters, 337 selfloop transitions, 41 changer transitions 7/386 dead transitions. [2023-08-31 01:36:51,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 386 transitions, 7291 flow [2023-08-31 01:36:51,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:36:51,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:36:51,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1357 transitions. [2023-08-31 01:36:51,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4703639514731369 [2023-08-31 01:36:51,490 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1357 transitions. [2023-08-31 01:36:51,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1357 transitions. [2023-08-31 01:36:51,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:51,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1357 transitions. [2023-08-31 01:36:51,491 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) [2023-08-31 01:36:51,493 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) [2023-08-31 01:36:51,493 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) [2023-08-31 01:36:51,494 INFO L175 Difference]: Start difference. First operand has 175 places, 347 transitions, 6347 flow. Second operand 5 states and 1357 transitions. [2023-08-31 01:36:51,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 386 transitions, 7291 flow [2023-08-31 01:36:53,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 386 transitions, 7093 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-31 01:36:53,332 INFO L231 Difference]: Finished difference. Result has 176 places, 341 transitions, 6169 flow [2023-08-31 01:36:53,332 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} [2023-08-31 01:36:53,333 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 138 predicate places. [2023-08-31 01:36:53,333 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 341 transitions, 6169 flow [2023-08-31 01:36:53,333 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) [2023-08-31 01:36:53,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:53,333 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] [2023-08-31 01:36:53,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-31 01:36:53,333 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)] === [2023-08-31 01:36:53,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:53,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1818172119, now seen corresponding path program 5 times [2023-08-31 01:36:53,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:53,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162250804] [2023-08-31 01:36:53,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:53,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:36:53,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:53,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162250804] [2023-08-31 01:36:53,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162250804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:53,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:53,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:53,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541684159] [2023-08-31 01:36:53,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:53,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:53,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:53,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:53,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:53,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-08-31 01:36:53,557 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) [2023-08-31 01:36:53,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:53,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-08-31 01:36:53,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:36:55,905 INFO L130 PetriNetUnfolder]: 11230/16980 cut-off events. [2023-08-31 01:36:55,905 INFO L131 PetriNetUnfolder]: For 167599/167819 co-relation queries the response was YES. [2023-08-31 01:36:56,038 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. [2023-08-31 01:36:56,096 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 364 selfloop transitions, 161 changer transitions 9/535 dead transitions. [2023-08-31 01:36:56,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 535 transitions, 9069 flow [2023-08-31 01:36:56,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:36:56,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:36:56,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2476 transitions. [2023-08-31 01:36:56,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47679568650105913 [2023-08-31 01:36:56,099 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2476 transitions. [2023-08-31 01:36:56,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2476 transitions. [2023-08-31 01:36:56,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:36:56,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2476 transitions. [2023-08-31 01:36:56,102 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) [2023-08-31 01:36:56,104 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) [2023-08-31 01:36:56,104 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) [2023-08-31 01:36:56,105 INFO L175 Difference]: Start difference. First operand has 176 places, 341 transitions, 6169 flow. Second operand 9 states and 2476 transitions. [2023-08-31 01:36:56,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 535 transitions, 9069 flow [2023-08-31 01:36:58,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 535 transitions, 8872 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-08-31 01:36:58,178 INFO L231 Difference]: Finished difference. Result has 184 places, 352 transitions, 6716 flow [2023-08-31 01:36:58,178 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} [2023-08-31 01:36:58,179 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 146 predicate places. [2023-08-31 01:36:58,179 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 352 transitions, 6716 flow [2023-08-31 01:36:58,179 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) [2023-08-31 01:36:58,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:36:58,179 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] [2023-08-31 01:36:58,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-31 01:36:58,180 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)] === [2023-08-31 01:36:58,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:36:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1469416541, now seen corresponding path program 6 times [2023-08-31 01:36:58,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:36:58,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100736981] [2023-08-31 01:36:58,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:36:58,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:36:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:36:58,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:36:58,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:36:58,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100736981] [2023-08-31 01:36:58,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100736981] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:36:58,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:36:58,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:36:58,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412875073] [2023-08-31 01:36:58,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:36:58,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:36:58,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:36:58,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:36:58,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:36:58,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 577 [2023-08-31 01:36:58,365 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) [2023-08-31 01:36:58,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:36:58,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 577 [2023-08-31 01:36:58,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:00,695 INFO L130 PetriNetUnfolder]: 11150/16888 cut-off events. [2023-08-31 01:37:00,695 INFO L131 PetriNetUnfolder]: For 194768/194808 co-relation queries the response was YES. [2023-08-31 01:37:00,767 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. [2023-08-31 01:37:00,818 INFO L137 encePairwiseOnDemand]: 568/577 looper letters, 266 selfloop transitions, 131 changer transitions 8/406 dead transitions. [2023-08-31 01:37:00,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 406 transitions, 7731 flow [2023-08-31 01:37:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:37:00,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:37:00,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1650 transitions. [2023-08-31 01:37:00,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47660311958405543 [2023-08-31 01:37:00,820 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1650 transitions. [2023-08-31 01:37:00,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1650 transitions. [2023-08-31 01:37:00,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:00,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1650 transitions. [2023-08-31 01:37:00,822 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) [2023-08-31 01:37:00,823 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) [2023-08-31 01:37:00,823 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) [2023-08-31 01:37:00,823 INFO L175 Difference]: Start difference. First operand has 184 places, 352 transitions, 6716 flow. Second operand 6 states and 1650 transitions. [2023-08-31 01:37:00,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 406 transitions, 7731 flow [2023-08-31 01:37:03,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 406 transitions, 7398 flow, removed 66 selfloop flow, removed 5 redundant places. [2023-08-31 01:37:03,225 INFO L231 Difference]: Finished difference. Result has 185 places, 345 transitions, 6624 flow [2023-08-31 01:37:03,226 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} [2023-08-31 01:37:03,226 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 147 predicate places. [2023-08-31 01:37:03,226 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 345 transitions, 6624 flow [2023-08-31 01:37:03,226 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) [2023-08-31 01:37:03,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:03,226 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] [2023-08-31 01:37:03,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-31 01:37:03,227 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)] === [2023-08-31 01:37:03,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:03,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1605622237, now seen corresponding path program 1 times [2023-08-31 01:37:03,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:03,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817618549] [2023-08-31 01:37:03,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:03,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:03,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:03,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:03,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817618549] [2023-08-31 01:37:03,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817618549] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:37:03,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:37:03,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:37:03,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92702588] [2023-08-31 01:37:03,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:03,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:37:03,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:03,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:37:03,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:37:03,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 577 [2023-08-31 01:37:03,334 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) [2023-08-31 01:37:03,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:03,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 577 [2023-08-31 01:37:03,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:05,669 INFO L130 PetriNetUnfolder]: 10897/16469 cut-off events. [2023-08-31 01:37:05,670 INFO L131 PetriNetUnfolder]: For 196656/196728 co-relation queries the response was YES. [2023-08-31 01:37:05,761 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. [2023-08-31 01:37:05,828 INFO L137 encePairwiseOnDemand]: 572/577 looper letters, 335 selfloop transitions, 58 changer transitions 12/406 dead transitions. [2023-08-31 01:37:05,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 406 transitions, 7659 flow [2023-08-31 01:37:05,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:37:05,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:37:05,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1402 transitions. [2023-08-31 01:37:05,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48596187175043326 [2023-08-31 01:37:05,830 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1402 transitions. [2023-08-31 01:37:05,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1402 transitions. [2023-08-31 01:37:05,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:05,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1402 transitions. [2023-08-31 01:37:05,833 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) [2023-08-31 01:37:05,835 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) [2023-08-31 01:37:05,835 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) [2023-08-31 01:37:05,835 INFO L175 Difference]: Start difference. First operand has 185 places, 345 transitions, 6624 flow. Second operand 5 states and 1402 transitions. [2023-08-31 01:37:05,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 406 transitions, 7659 flow [2023-08-31 01:37:08,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 406 transitions, 7357 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-31 01:37:08,100 INFO L231 Difference]: Finished difference. Result has 184 places, 336 transitions, 6250 flow [2023-08-31 01:37:08,101 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} [2023-08-31 01:37:08,101 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 146 predicate places. [2023-08-31 01:37:08,101 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 336 transitions, 6250 flow [2023-08-31 01:37:08,101 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) [2023-08-31 01:37:08,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:08,102 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] [2023-08-31 01:37:08,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-31 01:37:08,102 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)] === [2023-08-31 01:37:08,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:08,102 INFO L85 PathProgramCache]: Analyzing trace with hash 850364479, now seen corresponding path program 2 times [2023-08-31 01:37:08,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:08,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457111842] [2023-08-31 01:37:08,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:08,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:08,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:08,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457111842] [2023-08-31 01:37:08,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457111842] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:37:08,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:37:08,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:37:08,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317623726] [2023-08-31 01:37:08,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:08,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:37:08,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:08,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:37:08,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:37:08,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 577 [2023-08-31 01:37:08,214 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) [2023-08-31 01:37:08,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:08,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 577 [2023-08-31 01:37:08,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:10,095 INFO L130 PetriNetUnfolder]: 10411/15584 cut-off events. [2023-08-31 01:37:10,096 INFO L131 PetriNetUnfolder]: For 169053/169125 co-relation queries the response was YES. [2023-08-31 01:37:10,178 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. [2023-08-31 01:37:10,232 INFO L137 encePairwiseOnDemand]: 572/577 looper letters, 302 selfloop transitions, 58 changer transitions 9/370 dead transitions. [2023-08-31 01:37:10,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 370 transitions, 6861 flow [2023-08-31 01:37:10,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:37:10,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:37:10,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1399 transitions. [2023-08-31 01:37:10,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48492201039861355 [2023-08-31 01:37:10,234 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1399 transitions. [2023-08-31 01:37:10,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1399 transitions. [2023-08-31 01:37:10,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:10,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1399 transitions. [2023-08-31 01:37:10,237 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) [2023-08-31 01:37:10,239 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) [2023-08-31 01:37:10,240 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) [2023-08-31 01:37:10,240 INFO L175 Difference]: Start difference. First operand has 184 places, 336 transitions, 6250 flow. Second operand 5 states and 1399 transitions. [2023-08-31 01:37:10,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 370 transitions, 6861 flow [2023-08-31 01:37:11,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 370 transitions, 6668 flow, removed 37 selfloop flow, removed 9 redundant places. [2023-08-31 01:37:11,929 INFO L231 Difference]: Finished difference. Result has 173 places, 305 transitions, 5571 flow [2023-08-31 01:37:11,929 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} [2023-08-31 01:37:11,929 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 135 predicate places. [2023-08-31 01:37:11,929 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 305 transitions, 5571 flow [2023-08-31 01:37:11,930 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) [2023-08-31 01:37:11,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:11,930 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] [2023-08-31 01:37:11,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-31 01:37:11,930 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)] === [2023-08-31 01:37:11,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:11,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1976073599, now seen corresponding path program 3 times [2023-08-31 01:37:11,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:11,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262097099] [2023-08-31 01:37:11,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:11,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:12,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:12,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262097099] [2023-08-31 01:37:12,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262097099] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:37:12,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:37:12,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:37:12,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680946223] [2023-08-31 01:37:12,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:12,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:37:12,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:12,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:37:12,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:37:12,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 577 [2023-08-31 01:37:12,027 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) [2023-08-31 01:37:12,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:12,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 577 [2023-08-31 01:37:12,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:13,635 INFO L130 PetriNetUnfolder]: 9959/14938 cut-off events. [2023-08-31 01:37:13,635 INFO L131 PetriNetUnfolder]: For 154976/155084 co-relation queries the response was YES. [2023-08-31 01:37:13,735 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. [2023-08-31 01:37:13,788 INFO L137 encePairwiseOnDemand]: 571/577 looper letters, 255 selfloop transitions, 60 changer transitions 19/335 dead transitions. [2023-08-31 01:37:13,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 335 transitions, 6253 flow [2023-08-31 01:37:13,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:37:13,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:37:13,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1375 transitions. [2023-08-31 01:37:13,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47660311958405543 [2023-08-31 01:37:13,790 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1375 transitions. [2023-08-31 01:37:13,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1375 transitions. [2023-08-31 01:37:13,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:13,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1375 transitions. [2023-08-31 01:37:13,792 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) [2023-08-31 01:37:13,794 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) [2023-08-31 01:37:13,794 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) [2023-08-31 01:37:13,794 INFO L175 Difference]: Start difference. First operand has 173 places, 305 transitions, 5571 flow. Second operand 5 states and 1375 transitions. [2023-08-31 01:37:13,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 335 transitions, 6253 flow [2023-08-31 01:37:15,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 335 transitions, 6120 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-31 01:37:15,116 INFO L231 Difference]: Finished difference. Result has 170 places, 284 transitions, 5054 flow [2023-08-31 01:37:15,116 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} [2023-08-31 01:37:15,117 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 132 predicate places. [2023-08-31 01:37:15,117 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 284 transitions, 5054 flow [2023-08-31 01:37:15,118 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) [2023-08-31 01:37:15,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:15,118 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] [2023-08-31 01:37:15,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-31 01:37:15,120 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)] === [2023-08-31 01:37:15,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:15,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1082399877, now seen corresponding path program 4 times [2023-08-31 01:37:15,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:15,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497911302] [2023-08-31 01:37:15,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:15,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:15,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:15,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:15,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497911302] [2023-08-31 01:37:15,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497911302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:37:15,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:37:15,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:37:15,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983654332] [2023-08-31 01:37:15,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:15,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:37:15,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:15,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:37:15,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:37:15,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 577 [2023-08-31 01:37:15,215 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) [2023-08-31 01:37:15,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:15,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 577 [2023-08-31 01:37:15,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:16,713 INFO L130 PetriNetUnfolder]: 9579/14325 cut-off events. [2023-08-31 01:37:16,714 INFO L131 PetriNetUnfolder]: For 145773/146073 co-relation queries the response was YES. [2023-08-31 01:37:16,786 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. [2023-08-31 01:37:16,834 INFO L137 encePairwiseOnDemand]: 573/577 looper letters, 275 selfloop transitions, 29 changer transitions 0/305 dead transitions. [2023-08-31 01:37:16,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 305 transitions, 5633 flow [2023-08-31 01:37:16,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:37:16,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:37:16,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1117 transitions. [2023-08-31 01:37:16,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48396880415944543 [2023-08-31 01:37:16,836 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1117 transitions. [2023-08-31 01:37:16,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1117 transitions. [2023-08-31 01:37:16,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:16,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1117 transitions. [2023-08-31 01:37:16,838 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) [2023-08-31 01:37:16,840 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) [2023-08-31 01:37:16,840 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) [2023-08-31 01:37:16,840 INFO L175 Difference]: Start difference. First operand has 170 places, 284 transitions, 5054 flow. Second operand 4 states and 1117 transitions. [2023-08-31 01:37:16,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 305 transitions, 5633 flow [2023-08-31 01:37:17,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 305 transitions, 5548 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-31 01:37:17,953 INFO L231 Difference]: Finished difference. Result has 172 places, 278 transitions, 4878 flow [2023-08-31 01:37:17,953 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} [2023-08-31 01:37:17,953 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 134 predicate places. [2023-08-31 01:37:17,954 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 278 transitions, 4878 flow [2023-08-31 01:37:17,954 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) [2023-08-31 01:37:17,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:17,954 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] [2023-08-31 01:37:17,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-31 01:37:17,954 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)] === [2023-08-31 01:37:17,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:17,954 INFO L85 PathProgramCache]: Analyzing trace with hash -241854389, now seen corresponding path program 5 times [2023-08-31 01:37:17,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:17,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739444843] [2023-08-31 01:37:17,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:17,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:18,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:18,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739444843] [2023-08-31 01:37:18,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739444843] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:37:18,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:37:18,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:37:18,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219968723] [2023-08-31 01:37:18,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:18,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:37:18,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:18,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:37:18,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:37:18,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 577 [2023-08-31 01:37:18,045 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) [2023-08-31 01:37:18,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:18,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 577 [2023-08-31 01:37:18,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:19,466 INFO L130 PetriNetUnfolder]: 9019/13384 cut-off events. [2023-08-31 01:37:19,466 INFO L131 PetriNetUnfolder]: For 132016/132216 co-relation queries the response was YES. [2023-08-31 01:37:19,518 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. [2023-08-31 01:37:19,558 INFO L137 encePairwiseOnDemand]: 571/577 looper letters, 248 selfloop transitions, 48 changer transitions 9/306 dead transitions. [2023-08-31 01:37:19,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 306 transitions, 5393 flow [2023-08-31 01:37:19,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:37:19,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:37:19,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1377 transitions. [2023-08-31 01:37:19,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47729636048526863 [2023-08-31 01:37:19,560 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1377 transitions. [2023-08-31 01:37:19,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1377 transitions. [2023-08-31 01:37:19,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:19,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1377 transitions. [2023-08-31 01:37:19,563 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) [2023-08-31 01:37:19,564 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) [2023-08-31 01:37:19,565 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) [2023-08-31 01:37:19,565 INFO L175 Difference]: Start difference. First operand has 172 places, 278 transitions, 4878 flow. Second operand 5 states and 1377 transitions. [2023-08-31 01:37:19,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 306 transitions, 5393 flow [2023-08-31 01:37:20,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 306 transitions, 5137 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-08-31 01:37:20,505 INFO L231 Difference]: Finished difference. Result has 166 places, 255 transitions, 4222 flow [2023-08-31 01:37:20,506 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} [2023-08-31 01:37:20,506 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 128 predicate places. [2023-08-31 01:37:20,506 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 255 transitions, 4222 flow [2023-08-31 01:37:20,506 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) [2023-08-31 01:37:20,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:20,507 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] [2023-08-31 01:37:20,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-31 01:37:20,507 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)] === [2023-08-31 01:37:20,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:20,507 INFO L85 PathProgramCache]: Analyzing trace with hash -647602329, now seen corresponding path program 6 times [2023-08-31 01:37:20,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:20,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932168911] [2023-08-31 01:37:20,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:20,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:20,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:20,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932168911] [2023-08-31 01:37:20,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932168911] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:37:20,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:37:20,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:37:20,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667524703] [2023-08-31 01:37:20,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:20,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:37:20,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:20,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:37:20,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:37:20,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 577 [2023-08-31 01:37:20,604 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) [2023-08-31 01:37:20,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:20,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 577 [2023-08-31 01:37:20,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:21,926 INFO L130 PetriNetUnfolder]: 8631/12816 cut-off events. [2023-08-31 01:37:21,926 INFO L131 PetriNetUnfolder]: For 112778/112978 co-relation queries the response was YES. [2023-08-31 01:37:22,029 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. [2023-08-31 01:37:22,072 INFO L137 encePairwiseOnDemand]: 573/577 looper letters, 231 selfloop transitions, 22 changer transitions 0/254 dead transitions. [2023-08-31 01:37:22,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 254 transitions, 4449 flow [2023-08-31 01:37:22,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:37:22,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:37:22,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1108 transitions. [2023-08-31 01:37:22,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4800693240901213 [2023-08-31 01:37:22,074 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1108 transitions. [2023-08-31 01:37:22,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1108 transitions. [2023-08-31 01:37:22,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:22,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1108 transitions. [2023-08-31 01:37:22,076 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) [2023-08-31 01:37:22,077 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) [2023-08-31 01:37:22,078 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) [2023-08-31 01:37:22,078 INFO L175 Difference]: Start difference. First operand has 166 places, 255 transitions, 4222 flow. Second operand 4 states and 1108 transitions. [2023-08-31 01:37:22,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 254 transitions, 4449 flow [2023-08-31 01:37:22,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 254 transitions, 4146 flow, removed 24 selfloop flow, removed 9 redundant places. [2023-08-31 01:37:22,773 INFO L231 Difference]: Finished difference. Result has 154 places, 235 transitions, 3543 flow [2023-08-31 01:37:22,773 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} [2023-08-31 01:37:22,774 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 116 predicate places. [2023-08-31 01:37:22,774 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 235 transitions, 3543 flow [2023-08-31 01:37:22,774 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) [2023-08-31 01:37:22,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:22,774 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] [2023-08-31 01:37:22,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-31 01:37:22,775 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)] === [2023-08-31 01:37:22,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:22,775 INFO L85 PathProgramCache]: Analyzing trace with hash 417802368, now seen corresponding path program 1 times [2023-08-31 01:37:22,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:22,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829495002] [2023-08-31 01:37:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:22,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:22,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:22,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829495002] [2023-08-31 01:37:22,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829495002] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:37:22,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:37:22,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:37:22,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808266342] [2023-08-31 01:37:22,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:22,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:37:22,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:22,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:37:22,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:37:22,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 577 [2023-08-31 01:37:22,875 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) [2023-08-31 01:37:22,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:22,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 577 [2023-08-31 01:37:22,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:24,005 INFO L130 PetriNetUnfolder]: 8527/12771 cut-off events. [2023-08-31 01:37:24,006 INFO L131 PetriNetUnfolder]: For 87265/87325 co-relation queries the response was YES. [2023-08-31 01:37:24,054 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. [2023-08-31 01:37:24,091 INFO L137 encePairwiseOnDemand]: 573/577 looper letters, 247 selfloop transitions, 27 changer transitions 0/275 dead transitions. [2023-08-31 01:37:24,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 275 transitions, 4343 flow [2023-08-31 01:37:24,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:37:24,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:37:24,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1113 transitions. [2023-08-31 01:37:24,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48223570190641246 [2023-08-31 01:37:24,093 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1113 transitions. [2023-08-31 01:37:24,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1113 transitions. [2023-08-31 01:37:24,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:24,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1113 transitions. [2023-08-31 01:37:24,094 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) [2023-08-31 01:37:24,095 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) [2023-08-31 01:37:24,095 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) [2023-08-31 01:37:24,095 INFO L175 Difference]: Start difference. First operand has 154 places, 235 transitions, 3543 flow. Second operand 4 states and 1113 transitions. [2023-08-31 01:37:24,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 275 transitions, 4343 flow [2023-08-31 01:37:24,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 275 transitions, 4272 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-31 01:37:24,440 INFO L231 Difference]: Finished difference. Result has 156 places, 231 transitions, 3467 flow [2023-08-31 01:37:24,440 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} [2023-08-31 01:37:24,440 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 118 predicate places. [2023-08-31 01:37:24,441 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 231 transitions, 3467 flow [2023-08-31 01:37:24,441 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) [2023-08-31 01:37:24,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:24,441 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] [2023-08-31 01:37:24,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-31 01:37:24,441 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)] === [2023-08-31 01:37:24,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:24,442 INFO L85 PathProgramCache]: Analyzing trace with hash 26060358, now seen corresponding path program 2 times [2023-08-31 01:37:24,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:24,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216828770] [2023-08-31 01:37:24,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:24,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:24,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:24,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:24,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216828770] [2023-08-31 01:37:24,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216828770] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:37:24,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:37:24,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:37:24,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891784733] [2023-08-31 01:37:24,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:24,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:37:24,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:24,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:37:24,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:37:24,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 577 [2023-08-31 01:37:24,525 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) [2023-08-31 01:37:24,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:24,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 577 [2023-08-31 01:37:24,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:25,641 INFO L130 PetriNetUnfolder]: 7919/11805 cut-off events. [2023-08-31 01:37:25,641 INFO L131 PetriNetUnfolder]: For 90378/90418 co-relation queries the response was YES. [2023-08-31 01:37:25,694 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. [2023-08-31 01:37:25,731 INFO L137 encePairwiseOnDemand]: 572/577 looper letters, 244 selfloop transitions, 26 changer transitions 13/284 dead transitions. [2023-08-31 01:37:25,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 284 transitions, 4144 flow [2023-08-31 01:37:25,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:37:25,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:37:25,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1398 transitions. [2023-08-31 01:37:25,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845753899480069 [2023-08-31 01:37:25,733 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1398 transitions. [2023-08-31 01:37:25,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1398 transitions. [2023-08-31 01:37:25,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:25,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1398 transitions. [2023-08-31 01:37:25,735 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) [2023-08-31 01:37:25,736 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) [2023-08-31 01:37:25,737 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) [2023-08-31 01:37:25,737 INFO L175 Difference]: Start difference. First operand has 156 places, 231 transitions, 3467 flow. Second operand 5 states and 1398 transitions. [2023-08-31 01:37:25,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 284 transitions, 4144 flow [2023-08-31 01:37:26,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 284 transitions, 4131 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:37:26,071 INFO L231 Difference]: Finished difference. Result has 155 places, 216 transitions, 3224 flow [2023-08-31 01:37:26,071 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} [2023-08-31 01:37:26,071 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 117 predicate places. [2023-08-31 01:37:26,072 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 216 transitions, 3224 flow [2023-08-31 01:37:26,072 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) [2023-08-31 01:37:26,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:26,072 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] [2023-08-31 01:37:26,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-31 01:37:26,072 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)] === [2023-08-31 01:37:26,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:26,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1214310244, now seen corresponding path program 3 times [2023-08-31 01:37:26,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:26,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479805597] [2023-08-31 01:37:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:26,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:26,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:26,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:26,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479805597] [2023-08-31 01:37:26,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479805597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:37:26,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:37:26,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:37:26,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657509585] [2023-08-31 01:37:26,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:26,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:37:26,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:26,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:37:26,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:37:26,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 577 [2023-08-31 01:37:26,170 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) [2023-08-31 01:37:26,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:26,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 577 [2023-08-31 01:37:26,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:27,118 INFO L130 PetriNetUnfolder]: 7151/10497 cut-off events. [2023-08-31 01:37:27,118 INFO L131 PetriNetUnfolder]: For 81943/82003 co-relation queries the response was YES. [2023-08-31 01:37:27,164 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. [2023-08-31 01:37:27,198 INFO L137 encePairwiseOnDemand]: 572/577 looper letters, 196 selfloop transitions, 23 changer transitions 10/230 dead transitions. [2023-08-31 01:37:27,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 230 transitions, 3538 flow [2023-08-31 01:37:27,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:37:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:37:27,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1108 transitions. [2023-08-31 01:37:27,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4800693240901213 [2023-08-31 01:37:27,199 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1108 transitions. [2023-08-31 01:37:27,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1108 transitions. [2023-08-31 01:37:27,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:27,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1108 transitions. [2023-08-31 01:37:27,200 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) [2023-08-31 01:37:27,202 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) [2023-08-31 01:37:27,202 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) [2023-08-31 01:37:27,202 INFO L175 Difference]: Start difference. First operand has 155 places, 216 transitions, 3224 flow. Second operand 4 states and 1108 transitions. [2023-08-31 01:37:27,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 230 transitions, 3538 flow [2023-08-31 01:37:27,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 230 transitions, 3385 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-08-31 01:37:27,585 INFO L231 Difference]: Finished difference. Result has 146 places, 192 transitions, 2685 flow [2023-08-31 01:37:27,585 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} [2023-08-31 01:37:27,586 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 108 predicate places. [2023-08-31 01:37:27,586 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 192 transitions, 2685 flow [2023-08-31 01:37:27,586 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) [2023-08-31 01:37:27,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:27,586 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] [2023-08-31 01:37:27,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-31 01:37:27,586 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)] === [2023-08-31 01:37:27,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:27,586 INFO L85 PathProgramCache]: Analyzing trace with hash -752652904, now seen corresponding path program 4 times [2023-08-31 01:37:27,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:27,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726791852] [2023-08-31 01:37:27,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:27,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:27,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:27,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:27,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726791852] [2023-08-31 01:37:27,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726791852] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:37:27,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:37:27,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:37:27,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837129195] [2023-08-31 01:37:27,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:27,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:37:27,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:27,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:37:27,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:37:27,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 577 [2023-08-31 01:37:27,686 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) [2023-08-31 01:37:27,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:27,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 577 [2023-08-31 01:37:27,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:28,536 INFO L130 PetriNetUnfolder]: 6713/9835 cut-off events. [2023-08-31 01:37:28,536 INFO L131 PetriNetUnfolder]: For 64392/64412 co-relation queries the response was YES. [2023-08-31 01:37:28,580 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. [2023-08-31 01:37:28,613 INFO L137 encePairwiseOnDemand]: 573/577 looper letters, 185 selfloop transitions, 17 changer transitions 0/203 dead transitions. [2023-08-31 01:37:28,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 203 transitions, 2978 flow [2023-08-31 01:37:28,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:37:28,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:37:28,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1108 transitions. [2023-08-31 01:37:28,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4800693240901213 [2023-08-31 01:37:28,615 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1108 transitions. [2023-08-31 01:37:28,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1108 transitions. [2023-08-31 01:37:28,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:28,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1108 transitions. [2023-08-31 01:37:28,617 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) [2023-08-31 01:37:28,618 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) [2023-08-31 01:37:28,619 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) [2023-08-31 01:37:28,619 INFO L175 Difference]: Start difference. First operand has 146 places, 192 transitions, 2685 flow. Second operand 4 states and 1108 transitions. [2023-08-31 01:37:28,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 203 transitions, 2978 flow [2023-08-31 01:37:28,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 203 transitions, 2655 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-08-31 01:37:28,774 INFO L231 Difference]: Finished difference. Result has 129 places, 174 transitions, 2125 flow [2023-08-31 01:37:28,775 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} [2023-08-31 01:37:28,775 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 91 predicate places. [2023-08-31 01:37:28,775 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 174 transitions, 2125 flow [2023-08-31 01:37:28,775 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) [2023-08-31 01:37:28,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:28,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:37:28,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-31 01:37:28,776 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)] === [2023-08-31 01:37:28,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:28,776 INFO L85 PathProgramCache]: Analyzing trace with hash 869502642, now seen corresponding path program 1 times [2023-08-31 01:37:28,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:28,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808234356] [2023-08-31 01:37:28,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:28,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:37:28,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:28,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808234356] [2023-08-31 01:37:28,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808234356] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:37:28,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472737627] [2023-08-31 01:37:28,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:28,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:37:28,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:37:28,925 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) [2023-08-31 01:37:28,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 01:37:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:29,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 01:37:29,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:37:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:37:29,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:37:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:37:29,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472737627] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:37:29,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:37:29,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2023-08-31 01:37:29,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598607377] [2023-08-31 01:37:29,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:29,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:37:29,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:29,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:37:29,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-31 01:37:29,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 577 [2023-08-31 01:37:29,510 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) [2023-08-31 01:37:29,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:29,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 577 [2023-08-31 01:37:29,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:30,836 INFO L130 PetriNetUnfolder]: 8125/12111 cut-off events. [2023-08-31 01:37:30,836 INFO L131 PetriNetUnfolder]: For 63557/63566 co-relation queries the response was YES. [2023-08-31 01:37:30,878 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. [2023-08-31 01:37:30,919 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 534 selfloop transitions, 29 changer transitions 0/564 dead transitions. [2023-08-31 01:37:30,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 564 transitions, 8226 flow [2023-08-31 01:37:30,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:37:30,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:37:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2610 transitions. [2023-08-31 01:37:30,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45233968804159447 [2023-08-31 01:37:30,921 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2610 transitions. [2023-08-31 01:37:30,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2610 transitions. [2023-08-31 01:37:30,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:30,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2610 transitions. [2023-08-31 01:37:30,924 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) [2023-08-31 01:37:30,927 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) [2023-08-31 01:37:30,928 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) [2023-08-31 01:37:30,928 INFO L175 Difference]: Start difference. First operand has 129 places, 174 transitions, 2125 flow. Second operand 10 states and 2610 transitions. [2023-08-31 01:37:30,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 564 transitions, 8226 flow [2023-08-31 01:37:31,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 564 transitions, 8132 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-31 01:37:31,060 INFO L231 Difference]: Finished difference. Result has 138 places, 196 transitions, 2488 flow [2023-08-31 01:37:31,061 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} [2023-08-31 01:37:31,061 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 100 predicate places. [2023-08-31 01:37:31,061 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 196 transitions, 2488 flow [2023-08-31 01:37:31,061 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) [2023-08-31 01:37:31,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:31,061 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] [2023-08-31 01:37:31,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 01:37:31,271 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 [2023-08-31 01:37:31,271 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)] === [2023-08-31 01:37:31,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:31,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1284664047, now seen corresponding path program 1 times [2023-08-31 01:37:31,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:31,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043446428] [2023-08-31 01:37:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:31,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:31,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:31,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043446428] [2023-08-31 01:37:31,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043446428] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:37:31,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:37:31,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:37:31,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997313900] [2023-08-31 01:37:31,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:31,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:37:31,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:31,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:37:31,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:37:31,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-08-31 01:37:31,487 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) [2023-08-31 01:37:31,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:31,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-08-31 01:37:31,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:32,314 INFO L130 PetriNetUnfolder]: 5157/7984 cut-off events. [2023-08-31 01:37:32,315 INFO L131 PetriNetUnfolder]: For 41344/41420 co-relation queries the response was YES. [2023-08-31 01:37:32,334 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. [2023-08-31 01:37:32,351 INFO L137 encePairwiseOnDemand]: 569/577 looper letters, 169 selfloop transitions, 2 changer transitions 204/376 dead transitions. [2023-08-31 01:37:32,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 376 transitions, 5714 flow [2023-08-31 01:37:32,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:37:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:37:32,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1888 transitions. [2023-08-31 01:37:32,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674424362465957 [2023-08-31 01:37:32,353 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1888 transitions. [2023-08-31 01:37:32,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1888 transitions. [2023-08-31 01:37:32,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:32,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1888 transitions. [2023-08-31 01:37:32,355 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) [2023-08-31 01:37:32,362 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) [2023-08-31 01:37:32,363 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) [2023-08-31 01:37:32,363 INFO L175 Difference]: Start difference. First operand has 138 places, 196 transitions, 2488 flow. Second operand 7 states and 1888 transitions. [2023-08-31 01:37:32,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 376 transitions, 5714 flow [2023-08-31 01:37:32,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 376 transitions, 5704 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-31 01:37:32,475 INFO L231 Difference]: Finished difference. Result has 143 places, 172 transitions, 2342 flow [2023-08-31 01:37:32,475 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} [2023-08-31 01:37:32,475 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 105 predicate places. [2023-08-31 01:37:32,476 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 172 transitions, 2342 flow [2023-08-31 01:37:32,476 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) [2023-08-31 01:37:32,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:32,476 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] [2023-08-31 01:37:32,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-31 01:37:32,476 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)] === [2023-08-31 01:37:32,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:32,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2120518970, now seen corresponding path program 1 times [2023-08-31 01:37:32,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:32,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250527277] [2023-08-31 01:37:32,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:32,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:32,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:32,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:32,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250527277] [2023-08-31 01:37:32,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250527277] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:37:32,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:37:32,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:37:32,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640046854] [2023-08-31 01:37:32,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:32,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:37:32,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:32,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:37:32,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:37:32,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 577 [2023-08-31 01:37:32,621 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) [2023-08-31 01:37:32,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:32,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 577 [2023-08-31 01:37:32,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:33,123 INFO L130 PetriNetUnfolder]: 3144/4869 cut-off events. [2023-08-31 01:37:33,123 INFO L131 PetriNetUnfolder]: For 28257/28274 co-relation queries the response was YES. [2023-08-31 01:37:33,140 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. [2023-08-31 01:37:33,152 INFO L137 encePairwiseOnDemand]: 571/577 looper letters, 128 selfloop transitions, 2 changer transitions 157/288 dead transitions. [2023-08-31 01:37:33,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 288 transitions, 4131 flow [2023-08-31 01:37:33,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:37:33,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:37:33,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1892 transitions. [2023-08-31 01:37:33,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684327803911859 [2023-08-31 01:37:33,154 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1892 transitions. [2023-08-31 01:37:33,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1892 transitions. [2023-08-31 01:37:33,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:33,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1892 transitions. [2023-08-31 01:37:33,156 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) [2023-08-31 01:37:33,158 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) [2023-08-31 01:37:33,159 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) [2023-08-31 01:37:33,159 INFO L175 Difference]: Start difference. First operand has 143 places, 172 transitions, 2342 flow. Second operand 7 states and 1892 transitions. [2023-08-31 01:37:33,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 288 transitions, 4131 flow [2023-08-31 01:37:33,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 288 transitions, 3995 flow, removed 43 selfloop flow, removed 8 redundant places. [2023-08-31 01:37:33,245 INFO L231 Difference]: Finished difference. Result has 134 places, 131 transitions, 1639 flow [2023-08-31 01:37:33,245 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} [2023-08-31 01:37:33,245 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 96 predicate places. [2023-08-31 01:37:33,246 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 131 transitions, 1639 flow [2023-08-31 01:37:33,246 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) [2023-08-31 01:37:33,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:33,246 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] [2023-08-31 01:37:33,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-31 01:37:33,246 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)] === [2023-08-31 01:37:33,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:33,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1482106300, now seen corresponding path program 1 times [2023-08-31 01:37:33,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:33,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918917121] [2023-08-31 01:37:33,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:33,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:37:33,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:33,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918917121] [2023-08-31 01:37:33,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918917121] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:37:33,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:37:33,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:37:33,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999524459] [2023-08-31 01:37:33,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:33,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:37:33,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:33,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:37:33,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:37:33,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 577 [2023-08-31 01:37:33,352 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) [2023-08-31 01:37:33,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:33,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 577 [2023-08-31 01:37:33,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:33,660 INFO L130 PetriNetUnfolder]: 2143/3238 cut-off events. [2023-08-31 01:37:33,661 INFO L131 PetriNetUnfolder]: For 15723/15749 co-relation queries the response was YES. [2023-08-31 01:37:33,670 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. [2023-08-31 01:37:33,678 INFO L137 encePairwiseOnDemand]: 573/577 looper letters, 142 selfloop transitions, 13 changer transitions 0/156 dead transitions. [2023-08-31 01:37:33,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 156 transitions, 1991 flow [2023-08-31 01:37:33,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:37:33,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:37:33,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1116 transitions. [2023-08-31 01:37:33,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48353552859618715 [2023-08-31 01:37:33,680 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1116 transitions. [2023-08-31 01:37:33,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1116 transitions. [2023-08-31 01:37:33,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:33,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1116 transitions. [2023-08-31 01:37:33,681 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) [2023-08-31 01:37:33,682 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) [2023-08-31 01:37:33,682 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) [2023-08-31 01:37:33,682 INFO L175 Difference]: Start difference. First operand has 134 places, 131 transitions, 1639 flow. Second operand 4 states and 1116 transitions. [2023-08-31 01:37:33,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 156 transitions, 1991 flow [2023-08-31 01:37:33,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 156 transitions, 1902 flow, removed 17 selfloop flow, removed 9 redundant places. [2023-08-31 01:37:33,743 INFO L231 Difference]: Finished difference. Result has 121 places, 127 transitions, 1514 flow [2023-08-31 01:37:33,743 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} [2023-08-31 01:37:33,744 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 83 predicate places. [2023-08-31 01:37:33,744 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 127 transitions, 1514 flow [2023-08-31 01:37:33,744 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) [2023-08-31 01:37:33,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:33,745 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] [2023-08-31 01:37:33,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-31 01:37:33,745 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)] === [2023-08-31 01:37:33,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:33,745 INFO L85 PathProgramCache]: Analyzing trace with hash -859998328, now seen corresponding path program 2 times [2023-08-31 01:37:33,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:33,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355444760] [2023-08-31 01:37:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:33,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 01:37:33,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:33,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355444760] [2023-08-31 01:37:33,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355444760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:37:33,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:37:33,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:37:33,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858993584] [2023-08-31 01:37:33,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:33,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:37:33,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:33,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:37:33,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:37:33,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 577 [2023-08-31 01:37:33,835 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) [2023-08-31 01:37:33,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:33,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 577 [2023-08-31 01:37:33,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:34,182 INFO L130 PetriNetUnfolder]: 1949/2965 cut-off events. [2023-08-31 01:37:34,182 INFO L131 PetriNetUnfolder]: For 12820/12856 co-relation queries the response was YES. [2023-08-31 01:37:34,194 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. [2023-08-31 01:37:34,204 INFO L137 encePairwiseOnDemand]: 573/577 looper letters, 132 selfloop transitions, 13 changer transitions 0/146 dead transitions. [2023-08-31 01:37:34,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 146 transitions, 1799 flow [2023-08-31 01:37:34,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:37:34,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:37:34,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1114 transitions. [2023-08-31 01:37:34,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826689774696707 [2023-08-31 01:37:34,207 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1114 transitions. [2023-08-31 01:37:34,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1114 transitions. [2023-08-31 01:37:34,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:34,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1114 transitions. [2023-08-31 01:37:34,208 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) [2023-08-31 01:37:34,210 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) [2023-08-31 01:37:34,210 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) [2023-08-31 01:37:34,210 INFO L175 Difference]: Start difference. First operand has 121 places, 127 transitions, 1514 flow. Second operand 4 states and 1114 transitions. [2023-08-31 01:37:34,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 146 transitions, 1799 flow [2023-08-31 01:37:34,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 146 transitions, 1586 flow, removed 6 selfloop flow, removed 11 redundant places. [2023-08-31 01:37:34,244 INFO L231 Difference]: Finished difference. Result has 106 places, 115 transitions, 1191 flow [2023-08-31 01:37:34,244 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} [2023-08-31 01:37:34,244 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 68 predicate places. [2023-08-31 01:37:34,244 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 115 transitions, 1191 flow [2023-08-31 01:37:34,245 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) [2023-08-31 01:37:34,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:34,245 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] [2023-08-31 01:37:34,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-31 01:37:34,245 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)] === [2023-08-31 01:37:34,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:34,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1984418969, now seen corresponding path program 1 times [2023-08-31 01:37:34,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:34,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514629121] [2023-08-31 01:37:34,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:34,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:37:34,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:34,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514629121] [2023-08-31 01:37:34,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514629121] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:37:34,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739862001] [2023-08-31 01:37:34,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:34,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:37:34,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:37:34,528 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) [2023-08-31 01:37:34,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 01:37:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:34,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-31 01:37:34,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:37:34,993 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:37:34,994 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 [2023-08-31 01:37:35,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:37:35,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:37:35,195 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:37:35,196 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 [2023-08-31 01:37:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:37:35,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739862001] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:37:35,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:37:35,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 8] total 20 [2023-08-31 01:37:35,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63310689] [2023-08-31 01:37:35,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:35,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:37:35,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:35,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:37:35,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2023-08-31 01:37:35,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 577 [2023-08-31 01:37:35,904 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) [2023-08-31 01:37:35,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:35,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 577 [2023-08-31 01:37:35,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:36,698 INFO L130 PetriNetUnfolder]: 4022/6160 cut-off events. [2023-08-31 01:37:36,698 INFO L131 PetriNetUnfolder]: For 18962/18982 co-relation queries the response was YES. [2023-08-31 01:37:36,713 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. [2023-08-31 01:37:36,729 INFO L137 encePairwiseOnDemand]: 565/577 looper letters, 200 selfloop transitions, 67 changer transitions 59/327 dead transitions. [2023-08-31 01:37:36,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 327 transitions, 3726 flow [2023-08-31 01:37:36,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:37:36,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:37:36,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2698 transitions. [2023-08-31 01:37:36,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42508271624389476 [2023-08-31 01:37:36,731 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2698 transitions. [2023-08-31 01:37:36,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2698 transitions. [2023-08-31 01:37:36,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:36,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2698 transitions. [2023-08-31 01:37:36,734 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) [2023-08-31 01:37:36,738 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) [2023-08-31 01:37:36,738 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) [2023-08-31 01:37:36,738 INFO L175 Difference]: Start difference. First operand has 106 places, 115 transitions, 1191 flow. Second operand 11 states and 2698 transitions. [2023-08-31 01:37:36,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 327 transitions, 3726 flow [2023-08-31 01:37:36,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 327 transitions, 3712 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:37:36,782 INFO L231 Difference]: Finished difference. Result has 119 places, 149 transitions, 1727 flow [2023-08-31 01:37:36,783 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} [2023-08-31 01:37:36,783 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 81 predicate places. [2023-08-31 01:37:36,783 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 149 transitions, 1727 flow [2023-08-31 01:37:36,783 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) [2023-08-31 01:37:36,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:36,784 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] [2023-08-31 01:37:36,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-31 01:37:36,989 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 [2023-08-31 01:37:36,989 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)] === [2023-08-31 01:37:36,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:36,990 INFO L85 PathProgramCache]: Analyzing trace with hash 261685965, now seen corresponding path program 2 times [2023-08-31 01:37:36,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:36,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393209169] [2023-08-31 01:37:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:36,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:37,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:37:37,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:37,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393209169] [2023-08-31 01:37:37,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393209169] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:37:37,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171387402] [2023-08-31 01:37:37,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:37:37,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:37:37,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:37:37,249 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) [2023-08-31 01:37:37,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 01:37:37,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 01:37:37,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:37:37,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-31 01:37:37,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:37:37,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 01:37:37,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:37:37,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171387402] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:37:37,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:37:37,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 15 [2023-08-31 01:37:37,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940007345] [2023-08-31 01:37:37,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:37,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:37:37,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:37,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:37:37,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-08-31 01:37:37,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 577 [2023-08-31 01:37:37,901 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) [2023-08-31 01:37:37,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:37,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 577 [2023-08-31 01:37:37,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:38,830 INFO L130 PetriNetUnfolder]: 3744/5766 cut-off events. [2023-08-31 01:37:38,830 INFO L131 PetriNetUnfolder]: For 20179/20199 co-relation queries the response was YES. [2023-08-31 01:37:38,845 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. [2023-08-31 01:37:38,859 INFO L137 encePairwiseOnDemand]: 565/577 looper letters, 217 selfloop transitions, 58 changer transitions 35/311 dead transitions. [2023-08-31 01:37:38,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 311 transitions, 3603 flow [2023-08-31 01:37:38,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 01:37:38,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 01:37:38,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3262 transitions. [2023-08-31 01:37:38,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43487534995333954 [2023-08-31 01:37:38,862 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3262 transitions. [2023-08-31 01:37:38,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3262 transitions. [2023-08-31 01:37:38,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:38,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3262 transitions. [2023-08-31 01:37:38,865 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) [2023-08-31 01:37:38,869 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) [2023-08-31 01:37:38,870 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) [2023-08-31 01:37:38,870 INFO L175 Difference]: Start difference. First operand has 119 places, 149 transitions, 1727 flow. Second operand 13 states and 3262 transitions. [2023-08-31 01:37:38,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 311 transitions, 3603 flow [2023-08-31 01:37:38,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 311 transitions, 3504 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-08-31 01:37:38,930 INFO L231 Difference]: Finished difference. Result has 130 places, 181 transitions, 2314 flow [2023-08-31 01:37:38,931 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} [2023-08-31 01:37:38,931 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 92 predicate places. [2023-08-31 01:37:38,931 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 181 transitions, 2314 flow [2023-08-31 01:37:38,932 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) [2023-08-31 01:37:38,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:38,932 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] [2023-08-31 01:37:38,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 01:37:39,132 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 [2023-08-31 01:37:39,132 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)] === [2023-08-31 01:37:39,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:39,133 INFO L85 PathProgramCache]: Analyzing trace with hash -168796839, now seen corresponding path program 3 times [2023-08-31 01:37:39,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:39,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475097546] [2023-08-31 01:37:39,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:39,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:39,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:39,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475097546] [2023-08-31 01:37:39,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475097546] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:37:39,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045967402] [2023-08-31 01:37:39,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:37:39,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:37:39,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:37:39,398 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) [2023-08-31 01:37:39,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 01:37:39,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 01:37:39,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:37:39,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-31 01:37:39,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:37:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:37:39,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:37:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:37:40,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045967402] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:37:40,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:37:40,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-08-31 01:37:40,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101492594] [2023-08-31 01:37:40,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:37:40,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-31 01:37:40,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:40,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-31 01:37:40,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2023-08-31 01:37:41,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 577 [2023-08-31 01:37:41,301 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) [2023-08-31 01:37:41,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:41,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 577 [2023-08-31 01:37:41,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:44,902 INFO L130 PetriNetUnfolder]: 9861/15132 cut-off events. [2023-08-31 01:37:44,902 INFO L131 PetriNetUnfolder]: For 55115/55149 co-relation queries the response was YES. [2023-08-31 01:37:44,974 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. [2023-08-31 01:37:45,010 INFO L137 encePairwiseOnDemand]: 559/577 looper letters, 360 selfloop transitions, 164 changer transitions 502/1027 dead transitions. [2023-08-31 01:37:45,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 1027 transitions, 11330 flow [2023-08-31 01:37:45,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-08-31 01:37:45,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-08-31 01:37:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 13338 transitions. [2023-08-31 01:37:45,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055459272097054 [2023-08-31 01:37:45,022 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 13338 transitions. [2023-08-31 01:37:45,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 13338 transitions. [2023-08-31 01:37:45,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:45,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 13338 transitions. [2023-08-31 01:37:45,036 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) [2023-08-31 01:37:45,057 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) [2023-08-31 01:37:45,062 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) [2023-08-31 01:37:45,063 INFO L175 Difference]: Start difference. First operand has 130 places, 181 transitions, 2314 flow. Second operand 57 states and 13338 transitions. [2023-08-31 01:37:45,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 1027 transitions, 11330 flow [2023-08-31 01:37:45,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 1027 transitions, 10976 flow, removed 75 selfloop flow, removed 7 redundant places. [2023-08-31 01:37:45,433 INFO L231 Difference]: Finished difference. Result has 204 places, 274 transitions, 3893 flow [2023-08-31 01:37:45,433 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} [2023-08-31 01:37:45,434 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 166 predicate places. [2023-08-31 01:37:45,434 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 274 transitions, 3893 flow [2023-08-31 01:37:45,435 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) [2023-08-31 01:37:45,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:45,435 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] [2023-08-31 01:37:45,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-31 01:37:45,640 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 [2023-08-31 01:37:45,640 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)] === [2023-08-31 01:37:45,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:45,641 INFO L85 PathProgramCache]: Analyzing trace with hash 584558231, now seen corresponding path program 1 times [2023-08-31 01:37:45,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:45,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371445675] [2023-08-31 01:37:45,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:45,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:45,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:45,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371445675] [2023-08-31 01:37:45,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371445675] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:37:45,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146489834] [2023-08-31 01:37:45,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:45,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:37:45,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:37:45,796 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) [2023-08-31 01:37:45,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 01:37:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:45,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 01:37:45,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:37:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:46,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:37:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:46,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146489834] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:37:46,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:37:46,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 14 [2023-08-31 01:37:46,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626615192] [2023-08-31 01:37:46,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:37:46,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:37:46,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:46,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:37:46,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-08-31 01:37:46,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 577 [2023-08-31 01:37:46,307 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) [2023-08-31 01:37:46,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:46,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 577 [2023-08-31 01:37:46,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:47,489 INFO L130 PetriNetUnfolder]: 7401/11506 cut-off events. [2023-08-31 01:37:47,489 INFO L131 PetriNetUnfolder]: For 94593/94707 co-relation queries the response was YES. [2023-08-31 01:37:47,546 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. [2023-08-31 01:37:47,582 INFO L137 encePairwiseOnDemand]: 569/577 looper letters, 349 selfloop transitions, 31 changer transitions 0/381 dead transitions. [2023-08-31 01:37:47,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 381 transitions, 6184 flow [2023-08-31 01:37:47,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:37:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:37:47,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1773 transitions. [2023-08-31 01:37:47,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43897004208962614 [2023-08-31 01:37:47,584 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1773 transitions. [2023-08-31 01:37:47,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1773 transitions. [2023-08-31 01:37:47,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:47,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1773 transitions. [2023-08-31 01:37:47,585 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) [2023-08-31 01:37:47,587 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) [2023-08-31 01:37:47,587 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) [2023-08-31 01:37:47,587 INFO L175 Difference]: Start difference. First operand has 204 places, 274 transitions, 3893 flow. Second operand 7 states and 1773 transitions. [2023-08-31 01:37:47,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 381 transitions, 6184 flow [2023-08-31 01:37:47,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 381 transitions, 5749 flow, removed 138 selfloop flow, removed 27 redundant places. [2023-08-31 01:37:47,954 INFO L231 Difference]: Finished difference. Result has 150 places, 275 transitions, 3844 flow [2023-08-31 01:37:47,954 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} [2023-08-31 01:37:47,955 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 112 predicate places. [2023-08-31 01:37:47,955 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 275 transitions, 3844 flow [2023-08-31 01:37:47,955 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) [2023-08-31 01:37:47,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:47,955 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] [2023-08-31 01:37:47,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 01:37:48,156 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 [2023-08-31 01:37:48,156 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)] === [2023-08-31 01:37:48,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:48,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1542045553, now seen corresponding path program 1 times [2023-08-31 01:37:48,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:48,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780890956] [2023-08-31 01:37:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:48,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:48,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:37:48,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:48,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780890956] [2023-08-31 01:37:48,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780890956] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:37:48,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925342984] [2023-08-31 01:37:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:48,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:37:48,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:37:48,373 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) [2023-08-31 01:37:48,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 01:37:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:48,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-31 01:37:48,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:37:48,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:37:48,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:37:48,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:37:48,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925342984] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:37:48,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:37:48,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2023-08-31 01:37:48,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989892261] [2023-08-31 01:37:48,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:37:48,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-31 01:37:48,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:48,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-31 01:37:48,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-08-31 01:37:49,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 577 [2023-08-31 01:37:49,545 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) [2023-08-31 01:37:49,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:49,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 577 [2023-08-31 01:37:49,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:52,316 INFO L130 PetriNetUnfolder]: 17105/26514 cut-off events. [2023-08-31 01:37:52,316 INFO L131 PetriNetUnfolder]: For 123259/123275 co-relation queries the response was YES. [2023-08-31 01:37:52,437 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. [2023-08-31 01:37:52,512 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 469 selfloop transitions, 217 changer transitions 142/829 dead transitions. [2023-08-31 01:37:52,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 829 transitions, 12492 flow [2023-08-31 01:37:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 01:37:52,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 01:37:52,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3328 transitions. [2023-08-31 01:37:52,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436741767764298 [2023-08-31 01:37:52,514 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3328 transitions. [2023-08-31 01:37:52,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3328 transitions. [2023-08-31 01:37:52,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:52,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3328 transitions. [2023-08-31 01:37:52,517 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) [2023-08-31 01:37:52,521 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) [2023-08-31 01:37:52,522 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) [2023-08-31 01:37:52,522 INFO L175 Difference]: Start difference. First operand has 150 places, 275 transitions, 3844 flow. Second operand 13 states and 3328 transitions. [2023-08-31 01:37:52,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 829 transitions, 12492 flow [2023-08-31 01:37:53,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 829 transitions, 12421 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 01:37:53,039 INFO L231 Difference]: Finished difference. Result has 165 places, 383 transitions, 6043 flow [2023-08-31 01:37:53,039 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} [2023-08-31 01:37:53,040 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 127 predicate places. [2023-08-31 01:37:53,040 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 383 transitions, 6043 flow [2023-08-31 01:37:53,040 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) [2023-08-31 01:37:53,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:53,040 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] [2023-08-31 01:37:53,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-31 01:37:53,244 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 [2023-08-31 01:37:53,245 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)] === [2023-08-31 01:37:53,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:53,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1827772355, now seen corresponding path program 1 times [2023-08-31 01:37:53,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:53,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319495251] [2023-08-31 01:37:53,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:53,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:53,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:53,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:37:53,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319495251] [2023-08-31 01:37:53,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319495251] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:37:53,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93578282] [2023-08-31 01:37:53,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:53,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:37:53,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:37:53,449 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) [2023-08-31 01:37:53,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 01:37:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:37:53,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-31 01:37:53,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:37:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:53,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:37:53,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:37:53,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93578282] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:37:53,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:37:53,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-08-31 01:37:53,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787553405] [2023-08-31 01:37:53,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:37:53,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-31 01:37:53,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:37:53,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-31 01:37:53,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-08-31 01:37:54,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 577 [2023-08-31 01:37:54,626 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) [2023-08-31 01:37:54,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:37:54,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 577 [2023-08-31 01:37:54,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:37:58,179 INFO L130 PetriNetUnfolder]: 18381/28179 cut-off events. [2023-08-31 01:37:58,179 INFO L131 PetriNetUnfolder]: For 175039/175123 co-relation queries the response was YES. [2023-08-31 01:37:58,367 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. [2023-08-31 01:37:58,765 INFO L137 encePairwiseOnDemand]: 567/577 looper letters, 874 selfloop transitions, 40 changer transitions 0/915 dead transitions. [2023-08-31 01:37:58,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 915 transitions, 15137 flow [2023-08-31 01:37:58,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-31 01:37:58,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-31 01:37:58,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4615 transitions. [2023-08-31 01:37:58,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4443481609859426 [2023-08-31 01:37:58,768 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4615 transitions. [2023-08-31 01:37:58,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4615 transitions. [2023-08-31 01:37:58,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:37:58,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4615 transitions. [2023-08-31 01:37:58,772 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) [2023-08-31 01:37:58,776 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) [2023-08-31 01:37:58,776 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) [2023-08-31 01:37:58,776 INFO L175 Difference]: Start difference. First operand has 165 places, 383 transitions, 6043 flow. Second operand 18 states and 4615 transitions. [2023-08-31 01:37:58,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 915 transitions, 15137 flow [2023-08-31 01:37:59,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 915 transitions, 14736 flow, removed 56 selfloop flow, removed 4 redundant places. [2023-08-31 01:37:59,184 INFO L231 Difference]: Finished difference. Result has 181 places, 408 transitions, 6348 flow [2023-08-31 01:37:59,184 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} [2023-08-31 01:37:59,184 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 143 predicate places. [2023-08-31 01:37:59,184 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 408 transitions, 6348 flow [2023-08-31 01:37:59,185 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) [2023-08-31 01:37:59,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:37:59,185 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] [2023-08-31 01:37:59,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-31 01:37:59,390 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 [2023-08-31 01:37:59,390 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)] === [2023-08-31 01:37:59,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:37:59,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1055410229, now seen corresponding path program 1 times [2023-08-31 01:37:59,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:37:59,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558288501] [2023-08-31 01:37:59,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:37:59,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:37:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:38:00,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:38:00,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:38:00,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558288501] [2023-08-31 01:38:00,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558288501] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:38:00,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448168614] [2023-08-31 01:38:00,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:38:00,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:38:00,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:38:00,642 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) [2023-08-31 01:38:00,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-31 01:38:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:38:00,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-31 01:38:00,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:38:01,140 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 [2023-08-31 01:38:01,258 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 [2023-08-31 01:38:01,349 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 [2023-08-31 01:38:01,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:38:01,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:38:01,596 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 01:38:01,596 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 [2023-08-31 01:38:02,123 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:38:02,124 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 [2023-08-31 01:38:02,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:38:02,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:38:03,639 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:38:03,640 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 [2023-08-31 01:38:03,670 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:38:03,671 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 [2023-08-31 01:38:03,762 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:38:03,763 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 [2023-08-31 01:38:03,810 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:38:03,811 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 [2023-08-31 01:38:03,864 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:38:03,865 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 [2023-08-31 01:44:59,338 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:44:59,338 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 [2023-08-31 01:44:59,389 INFO L321 Elim1Store]: treesize reduction 15, result has 55.9 percent of original size [2023-08-31 01:44:59,390 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 [2023-08-31 01:44:59,763 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:44:59,764 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 [2023-08-31 01:44:59,820 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:44:59,820 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 [2023-08-31 01:44:59,875 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:44:59,876 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