./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/queue_longer.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/queue_longer.i -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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:48:28,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:48:28,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:48:28,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:48:28,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:48:28,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:48:28,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:48:28,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:48:28,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:48:28,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:48:28,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:48:28,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:48:28,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:48:28,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:48:28,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:48:28,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:48:28,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:48:28,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:48:28,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:48:28,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:48:28,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:48:28,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:48:28,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:48:28,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:48:28,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:48:28,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:48:28,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:48:28,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:48:28,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:48:28,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:48:28,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:48:28,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:48:28,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:48:28,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:48:28,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:48:28,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:48:28,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:48:28,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:48:28,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:48:28,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:48:28,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:48:28,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 08:48:28,296 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:48:28,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:48:28,298 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:48:28,298 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:48:28,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:48:28,299 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:48:28,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:48:28,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:48:28,300 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:48:28,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:48:28,301 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:48:28,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:48:28,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:48:28,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:48:28,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:48:28,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:48:28,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:48:28,303 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:48:28,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:48:28,303 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:48:28,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:48:28,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:48:28,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:48:28,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:48:28,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:48:28,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:48:28,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:48:28,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:48:28,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:48:28,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:48:28,305 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:48:28,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:48:28,306 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:48:28,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:48:28,306 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:48:28,306 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:48:28,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:48:28,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:48:28,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:48:28,649 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:48:28,649 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:48:28,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longer.i [2023-09-01 08:48:29,918 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:48:30,177 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:48:30,177 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i [2023-09-01 08:48:30,190 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3123baccb/259facdc50cb43728584e119104a7d2b/FLAG5e4a6846b [2023-09-01 08:48:30,204 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3123baccb/259facdc50cb43728584e119104a7d2b [2023-09-01 08:48:30,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:48:30,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:48:30,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:48:30,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:48:30,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:48:30,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12706e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30, skipping insertion in model container [2023-09-01 08:48:30,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:48:30,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:48:30,751 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43296,43309] [2023-09-01 08:48:30,758 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43503,43516] [2023-09-01 08:48:30,765 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43783,43796] [2023-09-01 08:48:30,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:48:30,782 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:48:30,836 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43296,43309] [2023-09-01 08:48:30,838 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43503,43516] [2023-09-01 08:48:30,840 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43783,43796] [2023-09-01 08:48:30,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:48:30,898 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:48:30,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30 WrapperNode [2023-09-01 08:48:30,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:48:30,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:48:30,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:48:30,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:48:30,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,951 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 243 [2023-09-01 08:48:30,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:48:30,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:48:30,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:48:30,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:48:30,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:31,004 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:31,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:31,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:48:31,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:48:31,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:48:31,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:48:31,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:31,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:48:31,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:48:31,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 08:48:31,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 08:48:31,094 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-09-01 08:48:31,095 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-09-01 08:48:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-09-01 08:48:31,095 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-09-01 08:48:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:48:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:48:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:48:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:48:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 08:48:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:48:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:48:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:48:31,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:48:31,097 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:48:31,300 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:48:31,301 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:48:31,592 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:48:31,610 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:48:31,610 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 08:48:31,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:48:31 BoogieIcfgContainer [2023-09-01 08:48:31,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:48:31,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:48:31,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:48:31,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:48:31,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:48:30" (1/3) ... [2023-09-01 08:48:31,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67267cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:48:31, skipping insertion in model container [2023-09-01 08:48:31,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (2/3) ... [2023-09-01 08:48:31,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67267cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:48:31, skipping insertion in model container [2023-09-01 08:48:31,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:48:31" (3/3) ... [2023-09-01 08:48:31,620 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2023-09-01 08:48:31,626 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:48:31,635 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:48:31,635 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-09-01 08:48:31,636 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:48:31,739 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 08:48:31,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 258 transitions, 532 flow [2023-09-01 08:48:31,888 INFO L130 PetriNetUnfolder]: 15/256 cut-off events. [2023-09-01 08:48:31,888 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:48:31,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 256 events. 15/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 359 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-09-01 08:48:31,897 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 258 transitions, 532 flow [2023-09-01 08:48:31,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 247 transitions, 503 flow [2023-09-01 08:48:31,911 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:48:31,922 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 247 transitions, 503 flow [2023-09-01 08:48:31,925 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 247 transitions, 503 flow [2023-09-01 08:48:31,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 247 transitions, 503 flow [2023-09-01 08:48:31,976 INFO L130 PetriNetUnfolder]: 15/247 cut-off events. [2023-09-01 08:48:31,977 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:48:31,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 247 events. 15/247 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 326 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-09-01 08:48:31,996 INFO L119 LiptonReduction]: Number of co-enabled transitions 15864 [2023-09-01 08:48:38,367 INFO L134 LiptonReduction]: Checked pairs total: 33075 [2023-09-01 08:48:38,367 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-09-01 08:48:38,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:48:38,385 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;@c2325d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:48:38,385 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-09-01 08:48:38,386 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 08:48:38,386 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:48:38,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:38,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 08:48:38,387 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 4 more)] === [2023-09-01 08:48:38,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:38,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2023-09-01 08:48:38,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:38,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79002470] [2023-09-01 08:48:38,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:38,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:38,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:38,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79002470] [2023-09-01 08:48:38,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79002470] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:38,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:38,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 08:48:38,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993912733] [2023-09-01 08:48:38,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:38,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 08:48:38,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:38,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 08:48:38,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 08:48:38,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 473 [2023-09-01 08:48:38,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 141 flow. Second operand has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:38,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:38,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 473 [2023-09-01 08:48:38,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:38,817 INFO L130 PetriNetUnfolder]: 1540/2645 cut-off events. [2023-09-01 08:48:38,817 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-09-01 08:48:38,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5115 conditions, 2645 events. 1540/2645 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12466 event pairs, 1212 based on Foata normal form. 32/2302 useless extension candidates. Maximal degree in co-relation 4962. Up to 2396 conditions per place. [2023-09-01 08:48:38,848 INFO L137 encePairwiseOnDemand]: 470/473 looper letters, 53 selfloop transitions, 0 changer transitions 0/63 dead transitions. [2023-09-01 08:48:38,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 241 flow [2023-09-01 08:48:38,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 08:48:38,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 08:48:38,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 546 transitions. [2023-09-01 08:48:38,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771670190274841 [2023-09-01 08:48:38,864 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 546 transitions. [2023-09-01 08:48:38,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 546 transitions. [2023-09-01 08:48:38,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:38,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 546 transitions. [2023-09-01 08:48:38,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 273.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:38,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:38,877 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:38,879 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 141 flow. Second operand 2 states and 546 transitions. [2023-09-01 08:48:38,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 241 flow [2023-09-01 08:48:38,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 236 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:48:38,885 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 130 flow [2023-09-01 08:48:38,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2023-09-01 08:48:38,890 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2023-09-01 08:48:38,890 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 130 flow [2023-09-01 08:48:38,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:38,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:38,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:38,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:48:38,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:48:38,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:38,892 INFO L85 PathProgramCache]: Analyzing trace with hash 110343563, now seen corresponding path program 1 times [2023-09-01 08:48:38,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:38,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686711331] [2023-09-01 08:48:38,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:38,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:39,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:39,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:39,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686711331] [2023-09-01 08:48:39,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686711331] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:39,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:39,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:48:39,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833676546] [2023-09-01 08:48:39,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:39,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:48:39,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:39,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:48:39,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:48:39,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 473 [2023-09-01 08:48:39,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:39,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:39,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 473 [2023-09-01 08:48:39,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:39,421 INFO L130 PetriNetUnfolder]: 1508/2611 cut-off events. [2023-09-01 08:48:39,421 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:48:39,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5032 conditions, 2611 events. 1508/2611 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 12447 event pairs, 1167 based on Foata normal form. 0/2268 useless extension candidates. Maximal degree in co-relation 5029. Up to 2249 conditions per place. [2023-09-01 08:48:39,434 INFO L137 encePairwiseOnDemand]: 469/473 looper letters, 68 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2023-09-01 08:48:39,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 81 transitions, 310 flow [2023-09-01 08:48:39,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:48:39,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:48:39,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 792 transitions. [2023-09-01 08:48:39,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2023-09-01 08:48:39,438 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 792 transitions. [2023-09-01 08:48:39,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 792 transitions. [2023-09-01 08:48:39,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:39,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 792 transitions. [2023-09-01 08:48:39,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:39,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:39,447 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:39,447 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 130 flow. Second operand 3 states and 792 transitions. [2023-09-01 08:48:39,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 81 transitions, 310 flow [2023-09-01 08:48:39,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 81 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 08:48:39,450 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 134 flow [2023-09-01 08:48:39,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2023-09-01 08:48:39,452 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2023-09-01 08:48:39,452 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 134 flow [2023-09-01 08:48:39,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:39,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:39,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:39,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:48:39,453 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:48:39,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:39,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1330496416, now seen corresponding path program 1 times [2023-09-01 08:48:39,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:39,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288254364] [2023-09-01 08:48:39,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:39,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:40,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:40,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288254364] [2023-09-01 08:48:40,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288254364] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:40,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:40,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 08:48:40,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493770777] [2023-09-01 08:48:40,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:40,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:48:40,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:40,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:48:40,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:48:41,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 473 [2023-09-01 08:48:41,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 223.4) internal successors, (1117), 5 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:41,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:41,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 473 [2023-09-01 08:48:41,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:41,509 INFO L130 PetriNetUnfolder]: 1608/2744 cut-off events. [2023-09-01 08:48:41,509 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 08:48:41,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5428 conditions, 2744 events. 1608/2744 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 12803 event pairs, 1244 based on Foata normal form. 0/2392 useless extension candidates. Maximal degree in co-relation 5424. Up to 2518 conditions per place. [2023-09-01 08:48:41,522 INFO L137 encePairwiseOnDemand]: 466/473 looper letters, 57 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2023-09-01 08:48:41,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 292 flow [2023-09-01 08:48:41,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:48:41,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:48:41,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1393 transitions. [2023-09-01 08:48:41,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908386187455955 [2023-09-01 08:48:41,527 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1393 transitions. [2023-09-01 08:48:41,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1393 transitions. [2023-09-01 08:48:41,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:41,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1393 transitions. [2023-09-01 08:48:41,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 232.16666666666666) internal successors, (1393), 6 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:41,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:41,537 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:41,537 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 134 flow. Second operand 6 states and 1393 transitions. [2023-09-01 08:48:41,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 292 flow [2023-09-01 08:48:41,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:48:41,541 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 186 flow [2023-09-01 08:48:41,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2023-09-01 08:48:41,543 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 6 predicate places. [2023-09-01 08:48:41,543 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 186 flow [2023-09-01 08:48:41,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 223.4) internal successors, (1117), 5 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:41,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:41,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:41,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 08:48:41,545 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:48:41,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:41,545 INFO L85 PathProgramCache]: Analyzing trace with hash -588975779, now seen corresponding path program 1 times [2023-09-01 08:48:41,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:41,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400560519] [2023-09-01 08:48:41,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:41,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:42,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:42,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:42,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400560519] [2023-09-01 08:48:42,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400560519] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:42,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:42,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 08:48:42,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941775694] [2023-09-01 08:48:42,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:42,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 08:48:42,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:42,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 08:48:42,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:48:42,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 473 [2023-09-01 08:48:42,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 220.16666666666666) internal successors, (1321), 6 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:42,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:42,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 473 [2023-09-01 08:48:42,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:42,666 INFO L130 PetriNetUnfolder]: 1839/3131 cut-off events. [2023-09-01 08:48:42,667 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-09-01 08:48:42,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6392 conditions, 3131 events. 1839/3131 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 15144 event pairs, 302 based on Foata normal form. 17/2811 useless extension candidates. Maximal degree in co-relation 6384. Up to 2548 conditions per place. [2023-09-01 08:48:42,682 INFO L137 encePairwiseOnDemand]: 465/473 looper letters, 98 selfloop transitions, 17 changer transitions 0/123 dead transitions. [2023-09-01 08:48:42,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 123 transitions, 540 flow [2023-09-01 08:48:42,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:48:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:48:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1420 transitions. [2023-09-01 08:48:42,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5003523608174771 [2023-09-01 08:48:42,687 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1420 transitions. [2023-09-01 08:48:42,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1420 transitions. [2023-09-01 08:48:42,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:42,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1420 transitions. [2023-09-01 08:48:42,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 236.66666666666666) internal successors, (1420), 6 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:42,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:42,697 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:42,697 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 186 flow. Second operand 6 states and 1420 transitions. [2023-09-01 08:48:42,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 123 transitions, 540 flow [2023-09-01 08:48:42,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 123 transitions, 540 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 08:48:42,702 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 278 flow [2023-09-01 08:48:42,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2023-09-01 08:48:42,703 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 14 predicate places. [2023-09-01 08:48:42,703 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 278 flow [2023-09-01 08:48:42,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.16666666666666) internal successors, (1321), 6 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:42,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:42,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:42,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:48:42,704 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:48:42,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:42,705 INFO L85 PathProgramCache]: Analyzing trace with hash -507576723, now seen corresponding path program 2 times [2023-09-01 08:48:42,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:42,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677455379] [2023-09-01 08:48:42,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:42,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:43,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:43,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:43,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677455379] [2023-09-01 08:48:43,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677455379] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:43,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:43,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 08:48:43,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596465017] [2023-09-01 08:48:43,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:43,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 08:48:43,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:43,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 08:48:43,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:48:43,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 473 [2023-09-01 08:48:43,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 221.16666666666666) internal successors, (1327), 6 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:43,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:43,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 473 [2023-09-01 08:48:43,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:44,350 INFO L130 PetriNetUnfolder]: 1970/3340 cut-off events. [2023-09-01 08:48:44,351 INFO L131 PetriNetUnfolder]: For 690/690 co-relation queries the response was YES. [2023-09-01 08:48:44,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7299 conditions, 3340 events. 1970/3340 cut-off events. For 690/690 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16276 event pairs, 827 based on Foata normal form. 17/3010 useless extension candidates. Maximal degree in co-relation 7287. Up to 2536 conditions per place. [2023-09-01 08:48:44,368 INFO L137 encePairwiseOnDemand]: 465/473 looper letters, 100 selfloop transitions, 20 changer transitions 0/128 dead transitions. [2023-09-01 08:48:44,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 128 transitions, 639 flow [2023-09-01 08:48:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:48:44,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:48:44,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1425 transitions. [2023-09-01 08:48:44,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021141649048626 [2023-09-01 08:48:44,372 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1425 transitions. [2023-09-01 08:48:44,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1425 transitions. [2023-09-01 08:48:44,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:44,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1425 transitions. [2023-09-01 08:48:44,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.5) internal successors, (1425), 6 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:44,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:44,382 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:44,383 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 278 flow. Second operand 6 states and 1425 transitions. [2023-09-01 08:48:44,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 128 transitions, 639 flow [2023-09-01 08:48:44,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 128 transitions, 623 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-09-01 08:48:44,393 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 352 flow [2023-09-01 08:48:44,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2023-09-01 08:48:44,395 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 21 predicate places. [2023-09-01 08:48:44,395 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 352 flow [2023-09-01 08:48:44,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 221.16666666666666) internal successors, (1327), 6 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:44,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:44,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:44,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:48:44,397 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:48:44,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:44,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1152821177, now seen corresponding path program 3 times [2023-09-01 08:48:44,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:44,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946713166] [2023-09-01 08:48:44,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:44,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:45,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:45,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946713166] [2023-09-01 08:48:45,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946713166] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:45,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:45,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 08:48:45,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718902259] [2023-09-01 08:48:45,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:45,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 08:48:45,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:45,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 08:48:45,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-09-01 08:48:46,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 473 [2023-09-01 08:48:46,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 352 flow. Second operand has 9 states, 9 states have (on average 207.44444444444446) internal successors, (1867), 9 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:46,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:46,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 473 [2023-09-01 08:48:46,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:47,569 INFO L130 PetriNetUnfolder]: 2695/4560 cut-off events. [2023-09-01 08:48:47,569 INFO L131 PetriNetUnfolder]: For 1111/1111 co-relation queries the response was YES. [2023-09-01 08:48:47,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10103 conditions, 4560 events. 2695/4560 cut-off events. For 1111/1111 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 23995 event pairs, 572 based on Foata normal form. 0/4080 useless extension candidates. Maximal degree in co-relation 10088. Up to 2481 conditions per place. [2023-09-01 08:48:47,604 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 156 selfloop transitions, 26 changer transitions 3/193 dead transitions. [2023-09-01 08:48:47,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 193 transitions, 982 flow [2023-09-01 08:48:47,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 08:48:47,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 08:48:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2027 transitions. [2023-09-01 08:48:47,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47615691801738314 [2023-09-01 08:48:47,610 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2027 transitions. [2023-09-01 08:48:47,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2027 transitions. [2023-09-01 08:48:47,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:47,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2027 transitions. [2023-09-01 08:48:47,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 225.22222222222223) internal successors, (2027), 9 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:47,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:47,623 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:47,624 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 352 flow. Second operand 9 states and 2027 transitions. [2023-09-01 08:48:47,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 193 transitions, 982 flow [2023-09-01 08:48:47,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 193 transitions, 972 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-09-01 08:48:47,634 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 467 flow [2023-09-01 08:48:47,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=467, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2023-09-01 08:48:47,637 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 33 predicate places. [2023-09-01 08:48:47,638 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 467 flow [2023-09-01 08:48:47,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 207.44444444444446) internal successors, (1867), 9 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:47,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:47,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:47,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:48:47,641 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:48:47,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:47,642 INFO L85 PathProgramCache]: Analyzing trace with hash 454650260, now seen corresponding path program 1 times [2023-09-01 08:48:47,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:47,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471303290] [2023-09-01 08:48:47,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:47,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:48,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:48,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471303290] [2023-09-01 08:48:48,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471303290] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:48,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:48,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 08:48:48,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143729520] [2023-09-01 08:48:48,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:48,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 08:48:48,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:48,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 08:48:48,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-09-01 08:48:48,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 473 [2023-09-01 08:48:48,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 467 flow. Second operand has 9 states, 9 states have (on average 206.44444444444446) internal successors, (1858), 9 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:48,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:48,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 473 [2023-09-01 08:48:48,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:49,395 INFO L130 PetriNetUnfolder]: 2672/4539 cut-off events. [2023-09-01 08:48:49,395 INFO L131 PetriNetUnfolder]: For 2260/2260 co-relation queries the response was YES. [2023-09-01 08:48:49,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10694 conditions, 4539 events. 2672/4539 cut-off events. For 2260/2260 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 23899 event pairs, 1905 based on Foata normal form. 0/4050 useless extension candidates. Maximal degree in co-relation 10674. Up to 4236 conditions per place. [2023-09-01 08:48:49,420 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 88 selfloop transitions, 17 changer transitions 0/113 dead transitions. [2023-09-01 08:48:49,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 113 transitions, 739 flow [2023-09-01 08:48:49,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 08:48:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 08:48:49,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1926 transitions. [2023-09-01 08:48:49,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452431289640592 [2023-09-01 08:48:49,427 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1926 transitions. [2023-09-01 08:48:49,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1926 transitions. [2023-09-01 08:48:49,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:49,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1926 transitions. [2023-09-01 08:48:49,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 214.0) internal successors, (1926), 9 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:49,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:49,438 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:49,438 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 467 flow. Second operand 9 states and 1926 transitions. [2023-09-01 08:48:49,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 113 transitions, 739 flow [2023-09-01 08:48:49,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 113 transitions, 706 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-09-01 08:48:49,447 INFO L231 Difference]: Finished difference. Result has 105 places, 103 transitions, 538 flow [2023-09-01 08:48:49,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=538, PETRI_PLACES=105, PETRI_TRANSITIONS=103} [2023-09-01 08:48:49,448 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 42 predicate places. [2023-09-01 08:48:49,449 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 103 transitions, 538 flow [2023-09-01 08:48:49,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 206.44444444444446) internal successors, (1858), 9 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:49,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:49,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:49,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 08:48:49,450 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:48:49,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:49,450 INFO L85 PathProgramCache]: Analyzing trace with hash -535562244, now seen corresponding path program 1 times [2023-09-01 08:48:49,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:49,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282906977] [2023-09-01 08:48:49,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:49,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:49,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:49,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282906977] [2023-09-01 08:48:49,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282906977] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:49,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:49,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:48:49,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007195454] [2023-09-01 08:48:49,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:49,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:48:49,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:49,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:48:49,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:48:49,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 473 [2023-09-01 08:48:49,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 103 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:49,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:49,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 473 [2023-09-01 08:48:49,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:49,830 INFO L130 PetriNetUnfolder]: 1644/2836 cut-off events. [2023-09-01 08:48:49,830 INFO L131 PetriNetUnfolder]: For 615/632 co-relation queries the response was YES. [2023-09-01 08:48:49,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6342 conditions, 2836 events. 1644/2836 cut-off events. For 615/632 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12148 event pairs, 875 based on Foata normal form. 127/2567 useless extension candidates. Maximal degree in co-relation 6317. Up to 1353 conditions per place. [2023-09-01 08:48:49,845 INFO L137 encePairwiseOnDemand]: 469/473 looper letters, 96 selfloop transitions, 3 changer transitions 1/113 dead transitions. [2023-09-01 08:48:49,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 113 transitions, 694 flow [2023-09-01 08:48:49,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:48:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:48:49,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 800 transitions. [2023-09-01 08:48:49,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637773079633545 [2023-09-01 08:48:49,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 800 transitions. [2023-09-01 08:48:49,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 800 transitions. [2023-09-01 08:48:49,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:49,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 800 transitions. [2023-09-01 08:48:49,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:49,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:49,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:49,853 INFO L175 Difference]: Start difference. First operand has 105 places, 103 transitions, 538 flow. Second operand 3 states and 800 transitions. [2023-09-01 08:48:49,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 113 transitions, 694 flow [2023-09-01 08:48:49,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 113 transitions, 614 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-09-01 08:48:49,859 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 374 flow [2023-09-01 08:48:49,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2023-09-01 08:48:49,861 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 33 predicate places. [2023-09-01 08:48:49,862 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 374 flow [2023-09-01 08:48:49,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:49,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:49,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:49,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 08:48:49,863 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:48:49,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:49,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1966953527, now seen corresponding path program 1 times [2023-09-01 08:48:49,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:49,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489332309] [2023-09-01 08:48:49,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:49,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:50,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:50,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489332309] [2023-09-01 08:48:50,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489332309] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:50,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:50,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 08:48:50,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493447725] [2023-09-01 08:48:50,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:50,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 08:48:50,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:50,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 08:48:50,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-09-01 08:48:52,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 473 [2023-09-01 08:48:52,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 374 flow. Second operand has 10 states, 10 states have (on average 203.4) internal successors, (2034), 10 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:52,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:52,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 473 [2023-09-01 08:48:52,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:53,449 INFO L130 PetriNetUnfolder]: 1880/3301 cut-off events. [2023-09-01 08:48:53,450 INFO L131 PetriNetUnfolder]: For 407/407 co-relation queries the response was YES. [2023-09-01 08:48:53,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7302 conditions, 3301 events. 1880/3301 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 15059 event pairs, 1161 based on Foata normal form. 0/2864 useless extension candidates. Maximal degree in co-relation 7281. Up to 2482 conditions per place. [2023-09-01 08:48:53,468 INFO L137 encePairwiseOnDemand]: 461/473 looper letters, 107 selfloop transitions, 28 changer transitions 11/155 dead transitions. [2023-09-01 08:48:53,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 155 transitions, 842 flow [2023-09-01 08:48:53,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 08:48:53,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 08:48:53,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2149 transitions. [2023-09-01 08:48:53,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4543340380549683 [2023-09-01 08:48:53,474 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2149 transitions. [2023-09-01 08:48:53,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2149 transitions. [2023-09-01 08:48:53,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:53,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2149 transitions. [2023-09-01 08:48:53,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 214.9) internal successors, (2149), 10 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:53,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 473.0) internal successors, (5203), 11 states have internal predecessors, (5203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:53,487 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 473.0) internal successors, (5203), 11 states have internal predecessors, (5203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:53,487 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 374 flow. Second operand 10 states and 2149 transitions. [2023-09-01 08:48:53,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 155 transitions, 842 flow [2023-09-01 08:48:53,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 155 transitions, 839 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:48:53,493 INFO L231 Difference]: Finished difference. Result has 110 places, 96 transitions, 523 flow [2023-09-01 08:48:53,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=523, PETRI_PLACES=110, PETRI_TRANSITIONS=96} [2023-09-01 08:48:53,494 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 47 predicate places. [2023-09-01 08:48:53,495 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 96 transitions, 523 flow [2023-09-01 08:48:53,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 203.4) internal successors, (2034), 10 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:53,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:53,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:53,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 08:48:53,496 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:48:53,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:53,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1279417377, now seen corresponding path program 2 times [2023-09-01 08:48:53,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:53,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426747047] [2023-09-01 08:48:53,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:53,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:54,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:54,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426747047] [2023-09-01 08:48:54,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426747047] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:54,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:54,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 08:48:54,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198462192] [2023-09-01 08:48:54,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:54,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 08:48:54,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:54,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 08:48:54,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-09-01 08:48:54,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 473 [2023-09-01 08:48:54,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 96 transitions, 523 flow. Second operand has 10 states, 10 states have (on average 203.4) internal successors, (2034), 10 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:54,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:54,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 473 [2023-09-01 08:48:54,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:55,532 INFO L130 PetriNetUnfolder]: 1856/3274 cut-off events. [2023-09-01 08:48:55,532 INFO L131 PetriNetUnfolder]: For 1040/1040 co-relation queries the response was YES. [2023-09-01 08:48:55,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7587 conditions, 3274 events. 1856/3274 cut-off events. For 1040/1040 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14936 event pairs, 544 based on Foata normal form. 9/2844 useless extension candidates. Maximal degree in co-relation 7560. Up to 2012 conditions per place. [2023-09-01 08:48:55,554 INFO L137 encePairwiseOnDemand]: 461/473 looper letters, 96 selfloop transitions, 30 changer transitions 10/145 dead transitions. [2023-09-01 08:48:55,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 145 transitions, 912 flow [2023-09-01 08:48:55,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 08:48:55,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 08:48:55,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1934 transitions. [2023-09-01 08:48:55,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45431054733380316 [2023-09-01 08:48:55,560 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1934 transitions. [2023-09-01 08:48:55,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1934 transitions. [2023-09-01 08:48:55,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:55,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1934 transitions. [2023-09-01 08:48:55,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 214.88888888888889) internal successors, (1934), 9 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:55,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:55,570 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:55,570 INFO L175 Difference]: Start difference. First operand has 110 places, 96 transitions, 523 flow. Second operand 9 states and 1934 transitions. [2023-09-01 08:48:55,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 145 transitions, 912 flow [2023-09-01 08:48:55,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 145 transitions, 853 flow, removed 21 selfloop flow, removed 6 redundant places. [2023-09-01 08:48:55,579 INFO L231 Difference]: Finished difference. Result has 111 places, 94 transitions, 563 flow [2023-09-01 08:48:55,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=563, PETRI_PLACES=111, PETRI_TRANSITIONS=94} [2023-09-01 08:48:55,579 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 48 predicate places. [2023-09-01 08:48:55,580 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 94 transitions, 563 flow [2023-09-01 08:48:55,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 203.4) internal successors, (2034), 10 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:55,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:55,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:55,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 08:48:55,581 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:48:55,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:55,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1215939803, now seen corresponding path program 3 times [2023-09-01 08:48:55,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:55,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037182230] [2023-09-01 08:48:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:55,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:56,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:56,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037182230] [2023-09-01 08:48:56,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037182230] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:56,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:56,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 08:48:56,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380519469] [2023-09-01 08:48:56,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:56,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 08:48:56,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:56,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 08:48:56,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-09-01 08:48:57,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 473 [2023-09-01 08:48:57,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 94 transitions, 563 flow. Second operand has 10 states, 10 states have (on average 203.4) internal successors, (2034), 10 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:57,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:57,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 473 [2023-09-01 08:48:57,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:58,288 INFO L130 PetriNetUnfolder]: 1990/3521 cut-off events. [2023-09-01 08:48:58,289 INFO L131 PetriNetUnfolder]: For 1164/1164 co-relation queries the response was YES. [2023-09-01 08:48:58,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8234 conditions, 3521 events. 1990/3521 cut-off events. For 1164/1164 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 16710 event pairs, 469 based on Foata normal form. 0/3049 useless extension candidates. Maximal degree in co-relation 8207. Up to 1753 conditions per place. [2023-09-01 08:48:58,308 INFO L137 encePairwiseOnDemand]: 461/473 looper letters, 103 selfloop transitions, 37 changer transitions 13/162 dead transitions. [2023-09-01 08:48:58,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 162 transitions, 1037 flow [2023-09-01 08:48:58,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 08:48:58,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 08:48:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2150 transitions. [2023-09-01 08:48:58,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-09-01 08:48:58,314 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2150 transitions. [2023-09-01 08:48:58,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2150 transitions. [2023-09-01 08:48:58,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:58,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2150 transitions. [2023-09-01 08:48:58,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 215.0) internal successors, (2150), 10 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:58,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 473.0) internal successors, (5203), 11 states have internal predecessors, (5203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:58,326 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 473.0) internal successors, (5203), 11 states have internal predecessors, (5203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:58,326 INFO L175 Difference]: Start difference. First operand has 111 places, 94 transitions, 563 flow. Second operand 10 states and 2150 transitions. [2023-09-01 08:48:58,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 162 transitions, 1037 flow [2023-09-01 08:48:58,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 162 transitions, 990 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-09-01 08:48:58,336 INFO L231 Difference]: Finished difference. Result has 117 places, 97 transitions, 642 flow [2023-09-01 08:48:58,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=642, PETRI_PLACES=117, PETRI_TRANSITIONS=97} [2023-09-01 08:48:58,337 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 54 predicate places. [2023-09-01 08:48:58,337 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 97 transitions, 642 flow [2023-09-01 08:48:58,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 203.4) internal successors, (2034), 10 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:58,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:58,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:58,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 08:48:58,338 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:48:58,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:58,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1213258613, now seen corresponding path program 4 times [2023-09-01 08:48:58,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:58,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325471165] [2023-09-01 08:48:58,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:58,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:58,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:58,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325471165] [2023-09-01 08:48:58,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325471165] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:58,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:58,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 08:48:58,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248097552] [2023-09-01 08:48:58,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:58,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 08:48:58,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:58,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 08:48:58,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-09-01 08:48:59,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 473 [2023-09-01 08:48:59,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 97 transitions, 642 flow. Second operand has 10 states, 10 states have (on average 203.4) internal successors, (2034), 10 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:59,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:59,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 473 [2023-09-01 08:48:59,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:49:00,292 INFO L130 PetriNetUnfolder]: 2003/3536 cut-off events. [2023-09-01 08:49:00,293 INFO L131 PetriNetUnfolder]: For 1403/1403 co-relation queries the response was YES. [2023-09-01 08:49:00,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8498 conditions, 3536 events. 2003/3536 cut-off events. For 1403/1403 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 16612 event pairs, 526 based on Foata normal form. 0/3057 useless extension candidates. Maximal degree in co-relation 8469. Up to 1753 conditions per place. [2023-09-01 08:49:00,312 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 95 selfloop transitions, 35 changer transitions 9/148 dead transitions. [2023-09-01 08:49:00,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 148 transitions, 1041 flow [2023-09-01 08:49:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 08:49:00,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 08:49:00,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1930 transitions. [2023-09-01 08:49:00,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45337091848719757 [2023-09-01 08:49:00,317 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1930 transitions. [2023-09-01 08:49:00,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1930 transitions. [2023-09-01 08:49:00,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:49:00,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1930 transitions. [2023-09-01 08:49:00,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 214.44444444444446) internal successors, (1930), 9 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:00,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:00,327 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:00,328 INFO L175 Difference]: Start difference. First operand has 117 places, 97 transitions, 642 flow. Second operand 9 states and 1930 transitions. [2023-09-01 08:49:00,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 148 transitions, 1041 flow [2023-09-01 08:49:00,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 148 transitions, 990 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-09-01 08:49:00,339 INFO L231 Difference]: Finished difference. Result has 119 places, 98 transitions, 682 flow [2023-09-01 08:49:00,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=682, PETRI_PLACES=119, PETRI_TRANSITIONS=98} [2023-09-01 08:49:00,339 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 56 predicate places. [2023-09-01 08:49:00,339 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 98 transitions, 682 flow [2023-09-01 08:49:00,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 203.4) internal successors, (2034), 10 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:00,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:49:00,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:49:00,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 08:49:00,341 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:49:00,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:49:00,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1209251243, now seen corresponding path program 5 times [2023-09-01 08:49:00,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:49:00,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194428464] [2023-09-01 08:49:00,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:49:00,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:49:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:49:01,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:49:01,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:49:01,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194428464] [2023-09-01 08:49:01,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194428464] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:49:01,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:49:01,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 08:49:01,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497813019] [2023-09-01 08:49:01,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:49:01,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 08:49:01,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:49:01,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 08:49:01,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-09-01 08:49:01,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 473 [2023-09-01 08:49:01,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 98 transitions, 682 flow. Second operand has 10 states, 10 states have (on average 205.4) internal successors, (2054), 10 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:01,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:49:01,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 473 [2023-09-01 08:49:01,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:49:02,223 INFO L130 PetriNetUnfolder]: 1990/3505 cut-off events. [2023-09-01 08:49:02,223 INFO L131 PetriNetUnfolder]: For 1594/1594 co-relation queries the response was YES. [2023-09-01 08:49:02,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8548 conditions, 3505 events. 1990/3505 cut-off events. For 1594/1594 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 16354 event pairs, 515 based on Foata normal form. 0/3037 useless extension candidates. Maximal degree in co-relation 8518. Up to 1753 conditions per place. [2023-09-01 08:49:02,241 INFO L137 encePairwiseOnDemand]: 463/473 looper letters, 93 selfloop transitions, 35 changer transitions 10/146 dead transitions. [2023-09-01 08:49:02,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 146 transitions, 1065 flow [2023-09-01 08:49:02,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 08:49:02,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 08:49:02,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1946 transitions. [2023-09-01 08:49:02,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45712943387361993 [2023-09-01 08:49:02,247 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1946 transitions. [2023-09-01 08:49:02,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1946 transitions. [2023-09-01 08:49:02,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:49:02,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1946 transitions. [2023-09-01 08:49:02,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 216.22222222222223) internal successors, (1946), 9 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:02,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:02,257 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:02,258 INFO L175 Difference]: Start difference. First operand has 119 places, 98 transitions, 682 flow. Second operand 9 states and 1946 transitions. [2023-09-01 08:49:02,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 146 transitions, 1065 flow [2023-09-01 08:49:02,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 146 transitions, 1024 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-09-01 08:49:02,269 INFO L231 Difference]: Finished difference. Result has 119 places, 96 transitions, 703 flow [2023-09-01 08:49:02,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=703, PETRI_PLACES=119, PETRI_TRANSITIONS=96} [2023-09-01 08:49:02,270 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 56 predicate places. [2023-09-01 08:49:02,270 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 96 transitions, 703 flow [2023-09-01 08:49:02,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 205.4) internal successors, (2054), 10 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:02,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:49:02,271 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, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:49:02,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 08:49:02,271 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:49:02,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:49:02,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1942684503, now seen corresponding path program 1 times [2023-09-01 08:49:02,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:49:02,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578756188] [2023-09-01 08:49:02,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:49:02,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:49:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:49:02,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:49:02,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:49:02,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578756188] [2023-09-01 08:49:02,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578756188] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:49:02,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:49:02,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:49:02,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812824486] [2023-09-01 08:49:02,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:49:02,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:49:02,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:49:02,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:49:02,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:49:02,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 473 [2023-09-01 08:49:02,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 96 transitions, 703 flow. Second operand has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:02,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:49:02,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 473 [2023-09-01 08:49:02,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:49:02,628 INFO L130 PetriNetUnfolder]: 1298/2415 cut-off events. [2023-09-01 08:49:02,628 INFO L131 PetriNetUnfolder]: For 1569/1574 co-relation queries the response was YES. [2023-09-01 08:49:02,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6303 conditions, 2415 events. 1298/2415 cut-off events. For 1569/1574 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11433 event pairs, 373 based on Foata normal form. 7/2229 useless extension candidates. Maximal degree in co-relation 6273. Up to 1719 conditions per place. [2023-09-01 08:49:02,640 INFO L137 encePairwiseOnDemand]: 467/473 looper letters, 86 selfloop transitions, 6 changer transitions 1/108 dead transitions. [2023-09-01 08:49:02,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 108 transitions, 931 flow [2023-09-01 08:49:02,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:49:02,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:49:02,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 775 transitions. [2023-09-01 08:49:02,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461592670894997 [2023-09-01 08:49:02,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 775 transitions. [2023-09-01 08:49:02,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 775 transitions. [2023-09-01 08:49:02,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:49:02,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 775 transitions. [2023-09-01 08:49:02,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:02,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:02,649 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:02,649 INFO L175 Difference]: Start difference. First operand has 119 places, 96 transitions, 703 flow. Second operand 3 states and 775 transitions. [2023-09-01 08:49:02,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 108 transitions, 931 flow [2023-09-01 08:49:02,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 108 transitions, 859 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-09-01 08:49:02,659 INFO L231 Difference]: Finished difference. Result has 113 places, 96 transitions, 643 flow [2023-09-01 08:49:02,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=643, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2023-09-01 08:49:02,660 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 50 predicate places. [2023-09-01 08:49:02,660 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 643 flow [2023-09-01 08:49:02,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:02,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:49:02,661 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:49:02,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 08:49:02,661 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:49:02,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:49:02,662 INFO L85 PathProgramCache]: Analyzing trace with hash 272642884, now seen corresponding path program 1 times [2023-09-01 08:49:02,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:49:02,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382416089] [2023-09-01 08:49:02,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:49:02,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:49:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:49:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:49:03,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:49:03,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382416089] [2023-09-01 08:49:03,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382416089] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:49:03,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:49:03,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 08:49:03,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908811721] [2023-09-01 08:49:03,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:49:03,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:49:03,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:49:03,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:49:03,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:49:04,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 473 [2023-09-01 08:49:04,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 643 flow. Second operand has 13 states, 13 states have (on average 211.69230769230768) internal successors, (2752), 13 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:04,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:49:04,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 473 [2023-09-01 08:49:04,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:49:05,172 INFO L130 PetriNetUnfolder]: 1301/2438 cut-off events. [2023-09-01 08:49:05,172 INFO L131 PetriNetUnfolder]: For 1316/1318 co-relation queries the response was YES. [2023-09-01 08:49:05,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6350 conditions, 2438 events. 1301/2438 cut-off events. For 1316/1318 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11549 event pairs, 556 based on Foata normal form. 0/2345 useless extension candidates. Maximal degree in co-relation 6320. Up to 1304 conditions per place. [2023-09-01 08:49:05,190 INFO L137 encePairwiseOnDemand]: 461/473 looper letters, 111 selfloop transitions, 31 changer transitions 11/161 dead transitions. [2023-09-01 08:49:05,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 161 transitions, 1130 flow [2023-09-01 08:49:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 08:49:05,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 08:49:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2425 transitions. [2023-09-01 08:49:05,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46607726311743225 [2023-09-01 08:49:05,197 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2425 transitions. [2023-09-01 08:49:05,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2425 transitions. [2023-09-01 08:49:05,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:49:05,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2425 transitions. [2023-09-01 08:49:05,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 220.45454545454547) internal successors, (2425), 11 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:05,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 473.0) internal successors, (5676), 12 states have internal predecessors, (5676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:05,211 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 473.0) internal successors, (5676), 12 states have internal predecessors, (5676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:05,211 INFO L175 Difference]: Start difference. First operand has 113 places, 96 transitions, 643 flow. Second operand 11 states and 2425 transitions. [2023-09-01 08:49:05,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 161 transitions, 1130 flow [2023-09-01 08:49:05,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 161 transitions, 1120 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:49:05,222 INFO L231 Difference]: Finished difference. Result has 125 places, 103 transitions, 760 flow [2023-09-01 08:49:05,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=760, PETRI_PLACES=125, PETRI_TRANSITIONS=103} [2023-09-01 08:49:05,223 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 62 predicate places. [2023-09-01 08:49:05,223 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 103 transitions, 760 flow [2023-09-01 08:49:05,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 211.69230769230768) internal successors, (2752), 13 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:05,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:49:05,224 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:49:05,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 08:49:05,225 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:49:05,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:49:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1362103832, now seen corresponding path program 2 times [2023-09-01 08:49:05,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:49:05,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276769086] [2023-09-01 08:49:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:49:05,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:49:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:49:14,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:49:14,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:49:14,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276769086] [2023-09-01 08:49:14,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276769086] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:49:14,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:49:14,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-09-01 08:49:14,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334869479] [2023-09-01 08:49:14,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:49:14,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 08:49:14,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:49:14,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 08:49:14,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-09-01 08:49:35,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 473 [2023-09-01 08:49:35,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 103 transitions, 760 flow. Second operand has 18 states, 18 states have (on average 208.94444444444446) internal successors, (3761), 18 states have internal predecessors, (3761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:35,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:49:35,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 473 [2023-09-01 08:49:35,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:49:52,020 INFO L130 PetriNetUnfolder]: 1854/3507 cut-off events. [2023-09-01 08:49:52,020 INFO L131 PetriNetUnfolder]: For 1581/1581 co-relation queries the response was YES. [2023-09-01 08:49:52,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8847 conditions, 3507 events. 1854/3507 cut-off events. For 1581/1581 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 18189 event pairs, 484 based on Foata normal form. 0/3415 useless extension candidates. Maximal degree in co-relation 8813. Up to 879 conditions per place. [2023-09-01 08:49:52,037 INFO L137 encePairwiseOnDemand]: 456/473 looper letters, 170 selfloop transitions, 48 changer transitions 14/240 dead transitions. [2023-09-01 08:49:52,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 240 transitions, 1572 flow [2023-09-01 08:49:52,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 08:49:52,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 08:49:52,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3927 transitions. [2023-09-01 08:49:52,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2023-09-01 08:49:52,044 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3927 transitions. [2023-09-01 08:49:52,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3927 transitions. [2023-09-01 08:49:52,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:49:52,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3927 transitions. [2023-09-01 08:49:52,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 218.16666666666666) internal successors, (3927), 18 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:52,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 473.0) internal successors, (8987), 19 states have internal predecessors, (8987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:52,062 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 473.0) internal successors, (8987), 19 states have internal predecessors, (8987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:52,062 INFO L175 Difference]: Start difference. First operand has 125 places, 103 transitions, 760 flow. Second operand 18 states and 3927 transitions. [2023-09-01 08:49:52,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 240 transitions, 1572 flow [2023-09-01 08:49:52,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 240 transitions, 1533 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-09-01 08:49:52,074 INFO L231 Difference]: Finished difference. Result has 143 places, 114 transitions, 907 flow [2023-09-01 08:49:52,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=907, PETRI_PLACES=143, PETRI_TRANSITIONS=114} [2023-09-01 08:49:52,075 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 80 predicate places. [2023-09-01 08:49:52,075 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 114 transitions, 907 flow [2023-09-01 08:49:52,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 208.94444444444446) internal successors, (3761), 18 states have internal predecessors, (3761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:52,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:49:52,076 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:49:52,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 08:49:52,077 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:49:52,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:49:52,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1629082922, now seen corresponding path program 3 times [2023-09-01 08:49:52,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:49:52,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176227534] [2023-09-01 08:49:52,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:49:52,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:49:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:49:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:49:54,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:49:54,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176227534] [2023-09-01 08:49:54,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176227534] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:49:54,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:49:54,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-09-01 08:49:54,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252146256] [2023-09-01 08:49:54,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:49:54,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 08:49:54,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:49:54,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 08:49:54,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-09-01 08:49:55,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 473 [2023-09-01 08:49:55,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 114 transitions, 907 flow. Second operand has 17 states, 17 states have (on average 209.05882352941177) internal successors, (3554), 17 states have internal predecessors, (3554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:55,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:49:55,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 473 [2023-09-01 08:49:55,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:49:56,706 INFO L130 PetriNetUnfolder]: 2209/4184 cut-off events. [2023-09-01 08:49:56,706 INFO L131 PetriNetUnfolder]: For 2368/2368 co-relation queries the response was YES. [2023-09-01 08:49:56,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10953 conditions, 4184 events. 2209/4184 cut-off events. For 2368/2368 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 22081 event pairs, 331 based on Foata normal form. 8/4089 useless extension candidates. Maximal degree in co-relation 10912. Up to 1638 conditions per place. [2023-09-01 08:49:56,732 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 152 selfloop transitions, 46 changer transitions 14/220 dead transitions. [2023-09-01 08:49:56,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 220 transitions, 1630 flow [2023-09-01 08:49:56,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 08:49:56,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 08:49:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3270 transitions. [2023-09-01 08:49:56,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608879492600423 [2023-09-01 08:49:56,778 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3270 transitions. [2023-09-01 08:49:56,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3270 transitions. [2023-09-01 08:49:56,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:49:56,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3270 transitions. [2023-09-01 08:49:56,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 218.0) internal successors, (3270), 15 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:56,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 473.0) internal successors, (7568), 16 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:56,790 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 473.0) internal successors, (7568), 16 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:56,790 INFO L175 Difference]: Start difference. First operand has 143 places, 114 transitions, 907 flow. Second operand 15 states and 3270 transitions. [2023-09-01 08:49:56,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 220 transitions, 1630 flow [2023-09-01 08:49:56,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 220 transitions, 1526 flow, removed 8 selfloop flow, removed 11 redundant places. [2023-09-01 08:49:56,806 INFO L231 Difference]: Finished difference. Result has 150 places, 124 transitions, 1000 flow [2023-09-01 08:49:56,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1000, PETRI_PLACES=150, PETRI_TRANSITIONS=124} [2023-09-01 08:49:56,807 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 87 predicate places. [2023-09-01 08:49:56,807 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 124 transitions, 1000 flow [2023-09-01 08:49:56,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 209.05882352941177) internal successors, (3554), 17 states have internal predecessors, (3554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:56,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:49:56,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:49:56,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 08:49:56,808 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:49:56,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:49:56,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1056373008, now seen corresponding path program 1 times [2023-09-01 08:49:56,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:49:56,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998316851] [2023-09-01 08:49:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:49:56,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:49:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:49:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:49:57,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:49:57,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998316851] [2023-09-01 08:49:57,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998316851] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:49:57,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:49:57,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 08:49:57,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228173418] [2023-09-01 08:49:57,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:49:57,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:49:57,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:49:57,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:49:57,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:49:58,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 473 [2023-09-01 08:49:58,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 124 transitions, 1000 flow. Second operand has 13 states, 13 states have (on average 211.76923076923077) internal successors, (2753), 13 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:58,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:49:58,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 473 [2023-09-01 08:49:58,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:49:59,287 INFO L130 PetriNetUnfolder]: 2479/4685 cut-off events. [2023-09-01 08:49:59,288 INFO L131 PetriNetUnfolder]: For 3306/3308 co-relation queries the response was YES. [2023-09-01 08:49:59,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12502 conditions, 4685 events. 2479/4685 cut-off events. For 3306/3308 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 25588 event pairs, 473 based on Foata normal form. 18/4587 useless extension candidates. Maximal degree in co-relation 12458. Up to 2385 conditions per place. [2023-09-01 08:49:59,313 INFO L137 encePairwiseOnDemand]: 458/473 looper letters, 145 selfloop transitions, 41 changer transitions 10/204 dead transitions. [2023-09-01 08:49:59,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 204 transitions, 1642 flow [2023-09-01 08:49:59,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:49:59,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:49:59,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2649 transitions. [2023-09-01 08:49:59,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4667019027484144 [2023-09-01 08:49:59,317 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2649 transitions. [2023-09-01 08:49:59,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2649 transitions. [2023-09-01 08:49:59,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:49:59,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2649 transitions. [2023-09-01 08:49:59,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 220.75) internal successors, (2649), 12 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:59,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 473.0) internal successors, (6149), 13 states have internal predecessors, (6149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:59,325 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 473.0) internal successors, (6149), 13 states have internal predecessors, (6149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:59,325 INFO L175 Difference]: Start difference. First operand has 150 places, 124 transitions, 1000 flow. Second operand 12 states and 2649 transitions. [2023-09-01 08:49:59,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 204 transitions, 1642 flow [2023-09-01 08:49:59,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 204 transitions, 1559 flow, removed 5 selfloop flow, removed 10 redundant places. [2023-09-01 08:49:59,347 INFO L231 Difference]: Finished difference. Result has 154 places, 133 transitions, 1113 flow [2023-09-01 08:49:59,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1113, PETRI_PLACES=154, PETRI_TRANSITIONS=133} [2023-09-01 08:49:59,348 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 91 predicate places. [2023-09-01 08:49:59,348 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 133 transitions, 1113 flow [2023-09-01 08:49:59,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 211.76923076923077) internal successors, (2753), 13 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:49:59,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:49:59,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:49:59,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 08:49:59,349 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:49:59,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:49:59,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1241534900, now seen corresponding path program 2 times [2023-09-01 08:49:59,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:49:59,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232232661] [2023-09-01 08:49:59,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:49:59,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:49:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:50:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:50:00,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:50:00,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232232661] [2023-09-01 08:50:00,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232232661] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:50:00,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:50:00,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 08:50:00,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102743359] [2023-09-01 08:50:00,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:50:00,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:50:00,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:50:00,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:50:00,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:50:01,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 473 [2023-09-01 08:50:01,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 133 transitions, 1113 flow. Second operand has 13 states, 13 states have (on average 211.76923076923077) internal successors, (2753), 13 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:50:01,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:50:01,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 473 [2023-09-01 08:50:01,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:50:01,672 INFO L130 PetriNetUnfolder]: 1622/3067 cut-off events. [2023-09-01 08:50:01,672 INFO L131 PetriNetUnfolder]: For 3514/3514 co-relation queries the response was YES. [2023-09-01 08:50:01,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8824 conditions, 3067 events. 1622/3067 cut-off events. For 3514/3514 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 15072 event pairs, 345 based on Foata normal form. 21/3013 useless extension candidates. Maximal degree in co-relation 8777. Up to 1151 conditions per place. [2023-09-01 08:50:01,687 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 120 selfloop transitions, 34 changer transitions 11/173 dead transitions. [2023-09-01 08:50:01,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 173 transitions, 1444 flow [2023-09-01 08:50:01,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 08:50:01,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 08:50:01,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2421 transitions. [2023-09-01 08:50:01,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653084758793004 [2023-09-01 08:50:01,689 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2421 transitions. [2023-09-01 08:50:01,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2421 transitions. [2023-09-01 08:50:01,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:50:01,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2421 transitions. [2023-09-01 08:50:01,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 220.0909090909091) internal successors, (2421), 11 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:50:01,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 473.0) internal successors, (5676), 12 states have internal predecessors, (5676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:50:01,694 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 473.0) internal successors, (5676), 12 states have internal predecessors, (5676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:50:01,694 INFO L175 Difference]: Start difference. First operand has 154 places, 133 transitions, 1113 flow. Second operand 11 states and 2421 transitions. [2023-09-01 08:50:01,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 173 transitions, 1444 flow [2023-09-01 08:50:01,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 173 transitions, 1344 flow, removed 14 selfloop flow, removed 14 redundant places. [2023-09-01 08:50:01,713 INFO L231 Difference]: Finished difference. Result has 145 places, 116 transitions, 944 flow [2023-09-01 08:50:01,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=944, PETRI_PLACES=145, PETRI_TRANSITIONS=116} [2023-09-01 08:50:01,713 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 82 predicate places. [2023-09-01 08:50:01,713 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 116 transitions, 944 flow [2023-09-01 08:50:01,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 211.76923076923077) internal successors, (2753), 13 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:50:01,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:50:01,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:50:01,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 08:50:01,714 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:50:01,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:50:01,715 INFO L85 PathProgramCache]: Analyzing trace with hash -540729123, now seen corresponding path program 1 times [2023-09-01 08:50:01,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:50:01,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237264407] [2023-09-01 08:50:01,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:50:01,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:50:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:50:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:50:03,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:50:03,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237264407] [2023-09-01 08:50:03,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237264407] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:50:03,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:50:03,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-09-01 08:50:03,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311541967] [2023-09-01 08:50:03,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:50:03,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 08:50:03,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:50:03,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 08:50:03,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-09-01 08:50:04,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 473 [2023-09-01 08:50:04,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 116 transitions, 944 flow. Second operand has 16 states, 16 states have (on average 209.25) internal successors, (3348), 16 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:50:04,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:50:04,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 473 [2023-09-01 08:50:04,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:50:04,930 INFO L130 PetriNetUnfolder]: 1788/3388 cut-off events. [2023-09-01 08:50:04,930 INFO L131 PetriNetUnfolder]: For 3077/3077 co-relation queries the response was YES. [2023-09-01 08:50:04,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9340 conditions, 3388 events. 1788/3388 cut-off events. For 3077/3077 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 16770 event pairs, 215 based on Foata normal form. 8/3312 useless extension candidates. Maximal degree in co-relation 9299. Up to 816 conditions per place. [2023-09-01 08:50:04,947 INFO L137 encePairwiseOnDemand]: 460/473 looper letters, 140 selfloop transitions, 42 changer transitions 12/202 dead transitions. [2023-09-01 08:50:04,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 202 transitions, 1544 flow [2023-09-01 08:50:04,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 08:50:04,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 08:50:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2843 transitions. [2023-09-01 08:50:04,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623516018864856 [2023-09-01 08:50:04,950 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2843 transitions. [2023-09-01 08:50:04,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2843 transitions. [2023-09-01 08:50:04,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:50:04,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2843 transitions. [2023-09-01 08:50:04,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 218.69230769230768) internal successors, (2843), 13 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:50:04,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:50:04,959 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:50:04,959 INFO L175 Difference]: Start difference. First operand has 145 places, 116 transitions, 944 flow. Second operand 13 states and 2843 transitions. [2023-09-01 08:50:04,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 202 transitions, 1544 flow [2023-09-01 08:50:04,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 202 transitions, 1476 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-09-01 08:50:04,977 INFO L231 Difference]: Finished difference. Result has 149 places, 119 transitions, 994 flow [2023-09-01 08:50:04,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=994, PETRI_PLACES=149, PETRI_TRANSITIONS=119} [2023-09-01 08:50:04,978 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 86 predicate places. [2023-09-01 08:50:04,978 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 119 transitions, 994 flow [2023-09-01 08:50:04,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 209.25) internal successors, (3348), 16 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:50:04,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:50:04,979 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:50:04,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 08:50:04,979 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 08:50:04,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:50:04,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1142379959, now seen corresponding path program 1 times [2023-09-01 08:50:04,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:50:04,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447737865] [2023-09-01 08:50:04,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:50:04,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:50:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15