./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-lit/fkp2013-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-lit/fkp2013-1.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 ac100ce7c66b3266dc643fb77471441d693f59fe8c56e13ccaa684a73cdda8b0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:12:25,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:12:25,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:12:25,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:12:25,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:12:25,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:12:25,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:12:25,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:12:25,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:12:25,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:12:25,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:12:25,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:12:25,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:12:25,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:12:25,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:12:25,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:12:25,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:12:25,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:12:25,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:12:25,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:12:25,323 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:12:25,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:12:25,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:12:25,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:12:25,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:12:25,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:12:25,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:12:25,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:12:25,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:12:25,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:12:25,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:12:25,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:12:25,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:12:25,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:12:25,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:12:25,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:12:25,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:12:25,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:12:25,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:12:25,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:12:25,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:12:25,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:12:25,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:12:25,366 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:12:25,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:12:25,367 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:12:25,367 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:12:25,368 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:12:25,368 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:12:25,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:12:25,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:12:25,369 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:12:25,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:12:25,370 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:12:25,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:12:25,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:12:25,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:12:25,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:12:25,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:12:25,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:12:25,371 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:12:25,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:12:25,372 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:12:25,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:12:25,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:12:25,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:12:25,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:12:25,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:12:25,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:12:25,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:12:25,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:12:25,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:12:25,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:12:25,374 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:12:25,374 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:12:25,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:12:25,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac100ce7c66b3266dc643fb77471441d693f59fe8c56e13ccaa684a73cdda8b0 [2022-07-19 21:12:25,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:12:25,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:12:25,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:12:25,549 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:12:25,550 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:12:25,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/fkp2013-1.i [2022-07-19 21:12:25,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/289c3a51f/0bdb5f661f834443b06596f0d4736e6e/FLAG0a8eb473e [2022-07-19 21:12:26,098 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:12:26,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/fkp2013-1.i [2022-07-19 21:12:26,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/289c3a51f/0bdb5f661f834443b06596f0d4736e6e/FLAG0a8eb473e [2022-07-19 21:12:26,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/289c3a51f/0bdb5f661f834443b06596f0d4736e6e [2022-07-19 21:12:26,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:12:26,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:12:26,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:12:26,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:12:26,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:12:26,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:12:26" (1/1) ... [2022-07-19 21:12:26,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@444b39bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:26, skipping insertion in model container [2022-07-19 21:12:26,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:12:26" (1/1) ... [2022-07-19 21:12:26,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:12:26,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:12:26,902 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/fkp2013-1.i[30003,30016] [2022-07-19 21:12:26,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:12:26,950 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:12:27,001 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/fkp2013-1.i[30003,30016] [2022-07-19 21:12:27,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:12:27,048 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:12:27,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:27 WrapperNode [2022-07-19 21:12:27,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:12:27,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:12:27,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:12:27,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:12:27,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:27" (1/1) ... [2022-07-19 21:12:27,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:27" (1/1) ... [2022-07-19 21:12:27,093 INFO L137 Inliner]: procedures = 172, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2022-07-19 21:12:27,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:12:27,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:12:27,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:12:27,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:12:27,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:27" (1/1) ... [2022-07-19 21:12:27,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:27" (1/1) ... [2022-07-19 21:12:27,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:27" (1/1) ... [2022-07-19 21:12:27,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:27" (1/1) ... [2022-07-19 21:12:27,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:27" (1/1) ... [2022-07-19 21:12:27,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:27" (1/1) ... [2022-07-19 21:12:27,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:27" (1/1) ... [2022-07-19 21:12:27,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:12:27,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:12:27,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:12:27,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:12:27,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:27" (1/1) ... [2022-07-19 21:12:27,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:12:27,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:12:27,191 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:12:27,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:12:27,229 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-07-19 21:12:27,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-07-19 21:12:27,229 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-19 21:12:27,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-19 21:12:27,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:12:27,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:12:27,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:12:27,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:12:27,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:12:27,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:12:27,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:12:27,231 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:12:27,309 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:12:27,310 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:12:27,434 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:12:27,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:12:27,439 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 21:12:27,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:12:27 BoogieIcfgContainer [2022-07-19 21:12:27,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:12:27,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:12:27,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:12:27,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:12:27,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:12:26" (1/3) ... [2022-07-19 21:12:27,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d36c16c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:12:27, skipping insertion in model container [2022-07-19 21:12:27,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:27" (2/3) ... [2022-07-19 21:12:27,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d36c16c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:12:27, skipping insertion in model container [2022-07-19 21:12:27,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:12:27" (3/3) ... [2022-07-19 21:12:27,446 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013-1.i [2022-07-19 21:12:27,450 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:12:27,456 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:12:27,457 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:12:27,457 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:12:27,492 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:12:27,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 68 transitions, 146 flow [2022-07-19 21:12:27,551 INFO L129 PetriNetUnfolder]: 3/81 cut-off events. [2022-07-19 21:12:27,552 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:12:27,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 81 events. 3/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2022-07-19 21:12:27,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 68 transitions, 146 flow [2022-07-19 21:12:27,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 67 transitions, 142 flow [2022-07-19 21:12:27,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:12:27,571 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1e14341c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@61b1aa8 [2022-07-19 21:12:27,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:12:27,583 INFO L129 PetriNetUnfolder]: 1/42 cut-off events. [2022-07-19 21:12:27,583 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:12:27,583 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:27,584 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:27,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:12:27,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:27,588 INFO L85 PathProgramCache]: Analyzing trace with hash 702214347, now seen corresponding path program 1 times [2022-07-19 21:12:27,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:27,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900316014] [2022-07-19 21:12:27,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:27,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:27,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:27,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900316014] [2022-07-19 21:12:27,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900316014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:27,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:27,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:12:27,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101070481] [2022-07-19 21:12:27,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:27,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:12:27,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:27,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:12:27,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:12:27,924 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 68 [2022-07-19 21:12:27,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 55.4) internal successors, (277), 5 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:27,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:27,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 68 [2022-07-19 21:12:27,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:28,016 INFO L129 PetriNetUnfolder]: 11/142 cut-off events. [2022-07-19 21:12:28,017 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-19 21:12:28,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 142 events. 11/142 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 466 event pairs, 2 based on Foata normal form. 20/155 useless extension candidates. Maximal degree in co-relation 165. Up to 10 conditions per place. [2022-07-19 21:12:28,022 INFO L132 encePairwiseOnDemand]: 60/68 looper letters, 16 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2022-07-19 21:12:28,023 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 77 transitions, 216 flow [2022-07-19 21:12:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:12:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:12:28,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2022-07-19 21:12:28,033 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8566176470588235 [2022-07-19 21:12:28,034 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2022-07-19 21:12:28,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2022-07-19 21:12:28,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:28,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2022-07-19 21:12:28,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,047 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,048 INFO L186 Difference]: Start difference. First operand has 71 places, 67 transitions, 142 flow. Second operand 8 states and 466 transitions. [2022-07-19 21:12:28,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 77 transitions, 216 flow [2022-07-19 21:12:28,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 77 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:12:28,056 INFO L242 Difference]: Finished difference. Result has 80 places, 70 transitions, 183 flow [2022-07-19 21:12:28,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=183, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2022-07-19 21:12:28,060 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 9 predicate places. [2022-07-19 21:12:28,060 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 183 flow [2022-07-19 21:12:28,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.4) internal successors, (277), 5 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,060 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:28,061 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:28,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:12:28,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:12:28,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:28,062 INFO L85 PathProgramCache]: Analyzing trace with hash 30111252, now seen corresponding path program 1 times [2022-07-19 21:12:28,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:28,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219238977] [2022-07-19 21:12:28,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:28,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:12:28,082 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:12:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:12:28,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:12:28,112 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:12:28,113 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-19 21:12:28,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-19 21:12:28,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-19 21:12:28,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-19 21:12:28,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:12:28,116 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 21:12:28,117 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:12:28,118 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-19 21:12:28,131 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:12:28,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 89 transitions, 202 flow [2022-07-19 21:12:28,143 INFO L129 PetriNetUnfolder]: 4/107 cut-off events. [2022-07-19 21:12:28,143 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:12:28,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 107 events. 4/107 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 143 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 116. Up to 6 conditions per place. [2022-07-19 21:12:28,144 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 89 transitions, 202 flow [2022-07-19 21:12:28,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 74 transitions, 163 flow [2022-07-19 21:12:28,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:12:28,147 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1e14341c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@61b1aa8 [2022-07-19 21:12:28,147 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-19 21:12:28,151 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2022-07-19 21:12:28,151 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:12:28,151 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:28,151 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:28,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:12:28,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:28,152 INFO L85 PathProgramCache]: Analyzing trace with hash -980089482, now seen corresponding path program 1 times [2022-07-19 21:12:28,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:28,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461361660] [2022-07-19 21:12:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:28,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:28,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:28,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461361660] [2022-07-19 21:12:28,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461361660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:28,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:28,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:12:28,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551183258] [2022-07-19 21:12:28,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:28,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:12:28,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:28,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:12:28,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:12:28,212 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-07-19 21:12:28,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:28,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-07-19 21:12:28,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:28,300 INFO L129 PetriNetUnfolder]: 97/386 cut-off events. [2022-07-19 21:12:28,300 INFO L130 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-07-19 21:12:28,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 386 events. 97/386 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2105 event pairs, 6 based on Foata normal form. 95/459 useless extension candidates. Maximal degree in co-relation 625. Up to 55 conditions per place. [2022-07-19 21:12:28,304 INFO L132 encePairwiseOnDemand]: 80/89 looper letters, 42 selfloop transitions, 11 changer transitions 0/110 dead transitions. [2022-07-19 21:12:28,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 110 transitions, 377 flow [2022-07-19 21:12:28,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:12:28,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:12:28,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 607 transitions. [2022-07-19 21:12:28,307 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8525280898876404 [2022-07-19 21:12:28,307 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 607 transitions. [2022-07-19 21:12:28,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 607 transitions. [2022-07-19 21:12:28,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:28,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 607 transitions. [2022-07-19 21:12:28,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.875) internal successors, (607), 8 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,311 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,311 INFO L186 Difference]: Start difference. First operand has 80 places, 74 transitions, 163 flow. Second operand 8 states and 607 transitions. [2022-07-19 21:12:28,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 110 transitions, 377 flow [2022-07-19 21:12:28,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 110 transitions, 374 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-19 21:12:28,313 INFO L242 Difference]: Finished difference. Result has 90 places, 81 transitions, 236 flow [2022-07-19 21:12:28,314 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=236, PETRI_PLACES=90, PETRI_TRANSITIONS=81} [2022-07-19 21:12:28,314 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 10 predicate places. [2022-07-19 21:12:28,314 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 236 flow [2022-07-19 21:12:28,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,315 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:28,315 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:28,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:12:28,315 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:12:28,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:28,316 INFO L85 PathProgramCache]: Analyzing trace with hash 692131209, now seen corresponding path program 1 times [2022-07-19 21:12:28,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:28,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103886913] [2022-07-19 21:12:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:28,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:28,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:28,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103886913] [2022-07-19 21:12:28,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103886913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:28,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:28,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:12:28,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466334253] [2022-07-19 21:12:28,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:28,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:12:28,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:28,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:12:28,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:12:28,420 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 89 [2022-07-19 21:12:28,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:28,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 89 [2022-07-19 21:12:28,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:28,680 INFO L129 PetriNetUnfolder]: 131/767 cut-off events. [2022-07-19 21:12:28,681 INFO L130 PetriNetUnfolder]: For 342/342 co-relation queries the response was YES. [2022-07-19 21:12:28,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1439 conditions, 767 events. 131/767 cut-off events. For 342/342 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5643 event pairs, 20 based on Foata normal form. 5/739 useless extension candidates. Maximal degree in co-relation 1399. Up to 56 conditions per place. [2022-07-19 21:12:28,685 INFO L132 encePairwiseOnDemand]: 81/89 looper letters, 61 selfloop transitions, 33 changer transitions 0/150 dead transitions. [2022-07-19 21:12:28,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 150 transitions, 727 flow [2022-07-19 21:12:28,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:12:28,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:12:28,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1365 transitions. [2022-07-19 21:12:28,688 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8072146658781786 [2022-07-19 21:12:28,689 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1365 transitions. [2022-07-19 21:12:28,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1365 transitions. [2022-07-19 21:12:28,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:28,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1365 transitions. [2022-07-19 21:12:28,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 71.84210526315789) internal successors, (1365), 19 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 89.0) internal successors, (1780), 20 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,695 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 89.0) internal successors, (1780), 20 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,695 INFO L186 Difference]: Start difference. First operand has 90 places, 81 transitions, 236 flow. Second operand 19 states and 1365 transitions. [2022-07-19 21:12:28,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 150 transitions, 727 flow [2022-07-19 21:12:28,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 150 transitions, 727 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:12:28,699 INFO L242 Difference]: Finished difference. Result has 118 places, 104 transitions, 498 flow [2022-07-19 21:12:28,700 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=498, PETRI_PLACES=118, PETRI_TRANSITIONS=104} [2022-07-19 21:12:28,700 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 38 predicate places. [2022-07-19 21:12:28,701 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 104 transitions, 498 flow [2022-07-19 21:12:28,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,701 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:28,701 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:28,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:12:28,702 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:12:28,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:28,702 INFO L85 PathProgramCache]: Analyzing trace with hash -196327125, now seen corresponding path program 1 times [2022-07-19 21:12:28,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:28,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098132519] [2022-07-19 21:12:28,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:28,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:12:28,718 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:12:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:12:28,733 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:12:28,734 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:12:28,734 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-19 21:12:28,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-19 21:12:28,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-19 21:12:28,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-19 21:12:28,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-19 21:12:28,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:12:28,735 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-19 21:12:28,736 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:12:28,736 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-19 21:12:28,751 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:12:28,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 120 places, 110 transitions, 262 flow [2022-07-19 21:12:28,761 INFO L129 PetriNetUnfolder]: 5/133 cut-off events. [2022-07-19 21:12:28,761 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-19 21:12:28,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 133 events. 5/133 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 186 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 147. Up to 8 conditions per place. [2022-07-19 21:12:28,762 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 110 transitions, 262 flow [2022-07-19 21:12:28,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 81 transitions, 186 flow [2022-07-19 21:12:28,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:12:28,764 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1e14341c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@61b1aa8 [2022-07-19 21:12:28,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-19 21:12:28,766 INFO L129 PetriNetUnfolder]: 1/41 cut-off events. [2022-07-19 21:12:28,766 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:12:28,766 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:28,766 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:28,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:28,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:28,767 INFO L85 PathProgramCache]: Analyzing trace with hash 980719107, now seen corresponding path program 1 times [2022-07-19 21:12:28,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:28,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797173017] [2022-07-19 21:12:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:28,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:28,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:28,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797173017] [2022-07-19 21:12:28,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797173017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:28,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:28,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:12:28,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914916301] [2022-07-19 21:12:28,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:28,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:12:28,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:28,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:12:28,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:12:28,801 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 110 [2022-07-19 21:12:28,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:28,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 110 [2022-07-19 21:12:28,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:29,005 INFO L129 PetriNetUnfolder]: 541/1578 cut-off events. [2022-07-19 21:12:29,006 INFO L130 PetriNetUnfolder]: For 504/504 co-relation queries the response was YES. [2022-07-19 21:12:29,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2822 conditions, 1578 events. 541/1578 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11849 event pairs, 184 based on Foata normal form. 274/1742 useless extension candidates. Maximal degree in co-relation 2787. Up to 318 conditions per place. [2022-07-19 21:12:29,019 INFO L132 encePairwiseOnDemand]: 100/110 looper letters, 60 selfloop transitions, 14 changer transitions 0/135 dead transitions. [2022-07-19 21:12:29,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 135 transitions, 520 flow [2022-07-19 21:12:29,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:12:29,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:12:29,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 740 transitions. [2022-07-19 21:12:29,021 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8409090909090909 [2022-07-19 21:12:29,021 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 740 transitions. [2022-07-19 21:12:29,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 740 transitions. [2022-07-19 21:12:29,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:29,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 740 transitions. [2022-07-19 21:12:29,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.5) internal successors, (740), 8 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:29,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 110.0) internal successors, (990), 9 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:29,025 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 110.0) internal successors, (990), 9 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:29,025 INFO L186 Difference]: Start difference. First operand has 89 places, 81 transitions, 186 flow. Second operand 8 states and 740 transitions. [2022-07-19 21:12:29,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 135 transitions, 520 flow [2022-07-19 21:12:29,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 135 transitions, 501 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-07-19 21:12:29,028 INFO L242 Difference]: Finished difference. Result has 99 places, 91 transitions, 278 flow [2022-07-19 21:12:29,028 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=278, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2022-07-19 21:12:29,029 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 10 predicate places. [2022-07-19 21:12:29,029 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 278 flow [2022-07-19 21:12:29,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:29,029 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:29,029 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:29,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:12:29,030 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:29,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:29,031 INFO L85 PathProgramCache]: Analyzing trace with hash 941136163, now seen corresponding path program 1 times [2022-07-19 21:12:29,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:29,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309577179] [2022-07-19 21:12:29,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:29,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:29,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:29,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:29,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309577179] [2022-07-19 21:12:29,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309577179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:29,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:29,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:12:29,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359965289] [2022-07-19 21:12:29,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:29,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:12:29,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:29,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:12:29,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:12:29,110 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 110 [2022-07-19 21:12:29,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 82.57142857142857) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:29,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:29,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 110 [2022-07-19 21:12:29,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:29,651 INFO L129 PetriNetUnfolder]: 921/3317 cut-off events. [2022-07-19 21:12:29,651 INFO L130 PetriNetUnfolder]: For 2190/2190 co-relation queries the response was YES. [2022-07-19 21:12:29,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7098 conditions, 3317 events. 921/3317 cut-off events. For 2190/2190 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 32178 event pairs, 206 based on Foata normal form. 19/3198 useless extension candidates. Maximal degree in co-relation 7057. Up to 415 conditions per place. [2022-07-19 21:12:29,679 INFO L132 encePairwiseOnDemand]: 101/110 looper letters, 122 selfloop transitions, 44 changer transitions 0/226 dead transitions. [2022-07-19 21:12:29,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 226 transitions, 1261 flow [2022-07-19 21:12:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:12:29,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:12:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1703 transitions. [2022-07-19 21:12:29,683 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8148325358851675 [2022-07-19 21:12:29,683 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1703 transitions. [2022-07-19 21:12:29,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1703 transitions. [2022-07-19 21:12:29,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:29,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1703 transitions. [2022-07-19 21:12:29,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 89.63157894736842) internal successors, (1703), 19 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:29,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 110.0) internal successors, (2200), 20 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:29,692 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 110.0) internal successors, (2200), 20 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:29,692 INFO L186 Difference]: Start difference. First operand has 99 places, 91 transitions, 278 flow. Second operand 19 states and 1703 transitions. [2022-07-19 21:12:29,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 226 transitions, 1261 flow [2022-07-19 21:12:29,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 226 transitions, 1261 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:12:29,703 INFO L242 Difference]: Finished difference. Result has 128 places, 123 transitions, 661 flow [2022-07-19 21:12:29,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=661, PETRI_PLACES=128, PETRI_TRANSITIONS=123} [2022-07-19 21:12:29,705 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 39 predicate places. [2022-07-19 21:12:29,705 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 123 transitions, 661 flow [2022-07-19 21:12:29,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.57142857142857) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:29,706 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:29,706 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:29,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:12:29,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:29,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:29,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2121700525, now seen corresponding path program 1 times [2022-07-19 21:12:29,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:29,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083709320] [2022-07-19 21:12:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:29,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:29,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 21:12:29,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:29,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083709320] [2022-07-19 21:12:29,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083709320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:29,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:29,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:12:29,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527741716] [2022-07-19 21:12:29,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:29,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:12:29,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:29,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:12:29,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:12:29,796 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 110 [2022-07-19 21:12:29,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 123 transitions, 661 flow. Second operand has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:29,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:29,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 110 [2022-07-19 21:12:29,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:30,519 INFO L129 PetriNetUnfolder]: 1144/3944 cut-off events. [2022-07-19 21:12:30,519 INFO L130 PetriNetUnfolder]: For 10849/10855 co-relation queries the response was YES. [2022-07-19 21:12:30,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12044 conditions, 3944 events. 1144/3944 cut-off events. For 10849/10855 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 40792 event pairs, 281 based on Foata normal form. 33/3859 useless extension candidates. Maximal degree in co-relation 11990. Up to 636 conditions per place. [2022-07-19 21:12:30,563 INFO L132 encePairwiseOnDemand]: 101/110 looper letters, 163 selfloop transitions, 86 changer transitions 0/309 dead transitions. [2022-07-19 21:12:30,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 309 transitions, 2759 flow [2022-07-19 21:12:30,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:12:30,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:12:30,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1701 transitions. [2022-07-19 21:12:30,567 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8138755980861244 [2022-07-19 21:12:30,567 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1701 transitions. [2022-07-19 21:12:30,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1701 transitions. [2022-07-19 21:12:30,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:30,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1701 transitions. [2022-07-19 21:12:30,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 89.52631578947368) internal successors, (1701), 19 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:30,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 110.0) internal successors, (2200), 20 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:30,574 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 110.0) internal successors, (2200), 20 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:30,574 INFO L186 Difference]: Start difference. First operand has 128 places, 123 transitions, 661 flow. Second operand 19 states and 1701 transitions. [2022-07-19 21:12:30,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 309 transitions, 2759 flow [2022-07-19 21:12:30,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 309 transitions, 2552 flow, removed 83 selfloop flow, removed 3 redundant places. [2022-07-19 21:12:30,629 INFO L242 Difference]: Finished difference. Result has 154 places, 186 transitions, 1550 flow [2022-07-19 21:12:30,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1550, PETRI_PLACES=154, PETRI_TRANSITIONS=186} [2022-07-19 21:12:30,630 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 65 predicate places. [2022-07-19 21:12:30,631 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 186 transitions, 1550 flow [2022-07-19 21:12:30,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:30,633 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:30,633 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:30,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:12:30,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:30,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:30,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1557261265, now seen corresponding path program 1 times [2022-07-19 21:12:30,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:30,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286359868] [2022-07-19 21:12:30,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:30,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:30,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:30,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286359868] [2022-07-19 21:12:30,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286359868] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:12:30,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832071013] [2022-07-19 21:12:30,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:30,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:12:30,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:12:30,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:12:30,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:12:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:30,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:12:30,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:12:30,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:30,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:12:31,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:31,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832071013] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:12:31,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:12:31,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-07-19 21:12:31,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033972329] [2022-07-19 21:12:31,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:12:31,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:12:31,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:31,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:12:31,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:12:31,101 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 110 [2022-07-19 21:12:31,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 186 transitions, 1550 flow. Second operand has 18 states, 18 states have (on average 82.0) internal successors, (1476), 18 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:31,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:31,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 110 [2022-07-19 21:12:31,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:33,279 INFO L129 PetriNetUnfolder]: 1451/5580 cut-off events. [2022-07-19 21:12:33,295 INFO L130 PetriNetUnfolder]: For 24278/24278 co-relation queries the response was YES. [2022-07-19 21:12:33,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17928 conditions, 5580 events. 1451/5580 cut-off events. For 24278/24278 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 63147 event pairs, 209 based on Foata normal form. 10/5396 useless extension candidates. Maximal degree in co-relation 17862. Up to 597 conditions per place. [2022-07-19 21:12:33,362 INFO L132 encePairwiseOnDemand]: 100/110 looper letters, 230 selfloop transitions, 192 changer transitions 0/481 dead transitions. [2022-07-19 21:12:33,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 481 transitions, 5027 flow [2022-07-19 21:12:33,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-07-19 21:12:33,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2022-07-19 21:12:33,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 4913 transitions. [2022-07-19 21:12:33,370 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7835725677830941 [2022-07-19 21:12:33,370 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 4913 transitions. [2022-07-19 21:12:33,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 4913 transitions. [2022-07-19 21:12:33,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:33,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 4913 transitions. [2022-07-19 21:12:33,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 86.19298245614036) internal successors, (4913), 57 states have internal predecessors, (4913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 110.0) internal successors, (6380), 58 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,391 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 110.0) internal successors, (6380), 58 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,391 INFO L186 Difference]: Start difference. First operand has 154 places, 186 transitions, 1550 flow. Second operand 57 states and 4913 transitions. [2022-07-19 21:12:33,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 481 transitions, 5027 flow [2022-07-19 21:12:33,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 481 transitions, 4763 flow, removed 132 selfloop flow, removed 0 redundant places. [2022-07-19 21:12:33,508 INFO L242 Difference]: Finished difference. Result has 232 places, 282 transitions, 3258 flow [2022-07-19 21:12:33,508 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=3258, PETRI_PLACES=232, PETRI_TRANSITIONS=282} [2022-07-19 21:12:33,509 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 143 predicate places. [2022-07-19 21:12:33,509 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 282 transitions, 3258 flow [2022-07-19 21:12:33,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 82.0) internal successors, (1476), 18 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,509 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:33,509 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:33,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 21:12:33,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:12:33,727 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:33,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:33,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1737120457, now seen corresponding path program 1 times [2022-07-19 21:12:33,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:33,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323274206] [2022-07-19 21:12:33,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:33,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:12:33,740 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:12:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:12:33,753 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:12:33,754 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:12:33,754 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-07-19 21:12:33,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-19 21:12:33,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-07-19 21:12:33,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-07-19 21:12:33,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-19 21:12:33,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-19 21:12:33,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:12:33,754 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-19 21:12:33,755 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:12:33,755 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-19 21:12:33,771 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:12:33,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 131 transitions, 326 flow [2022-07-19 21:12:33,780 INFO L129 PetriNetUnfolder]: 6/159 cut-off events. [2022-07-19 21:12:33,780 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-19 21:12:33,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 159 events. 6/159 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 226 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 179. Up to 10 conditions per place. [2022-07-19 21:12:33,780 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 131 transitions, 326 flow [2022-07-19 21:12:33,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 88 transitions, 211 flow [2022-07-19 21:12:33,782 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:12:33,782 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1e14341c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@61b1aa8 [2022-07-19 21:12:33,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-19 21:12:33,784 INFO L129 PetriNetUnfolder]: 1/41 cut-off events. [2022-07-19 21:12:33,784 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:12:33,784 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:33,784 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:33,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:33,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:33,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2005294478, now seen corresponding path program 1 times [2022-07-19 21:12:33,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:33,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650170883] [2022-07-19 21:12:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:33,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:33,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:33,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650170883] [2022-07-19 21:12:33,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650170883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:33,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:33,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:12:33,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821561918] [2022-07-19 21:12:33,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:33,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:12:33,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:33,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:12:33,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:12:33,812 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 131 [2022-07-19 21:12:33,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:33,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 131 [2022-07-19 21:12:33,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:34,341 INFO L129 PetriNetUnfolder]: 2465/5719 cut-off events. [2022-07-19 21:12:34,341 INFO L130 PetriNetUnfolder]: For 2918/2918 co-relation queries the response was YES. [2022-07-19 21:12:34,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10838 conditions, 5719 events. 2465/5719 cut-off events. For 2918/2918 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 50370 event pairs, 734 based on Foata normal form. 1002/6427 useless extension candidates. Maximal degree in co-relation 10802. Up to 1465 conditions per place. [2022-07-19 21:12:34,399 INFO L132 encePairwiseOnDemand]: 120/131 looper letters, 78 selfloop transitions, 17 changer transitions 0/160 dead transitions. [2022-07-19 21:12:34,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 160 transitions, 677 flow [2022-07-19 21:12:34,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:12:34,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:12:34,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 873 transitions. [2022-07-19 21:12:34,401 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8330152671755725 [2022-07-19 21:12:34,401 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 873 transitions. [2022-07-19 21:12:34,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 873 transitions. [2022-07-19 21:12:34,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:34,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 873 transitions. [2022-07-19 21:12:34,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 109.125) internal successors, (873), 8 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,404 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,404 INFO L186 Difference]: Start difference. First operand has 98 places, 88 transitions, 211 flow. Second operand 8 states and 873 transitions. [2022-07-19 21:12:34,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 160 transitions, 677 flow [2022-07-19 21:12:34,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 160 transitions, 628 flow, removed 24 selfloop flow, removed 1 redundant places. [2022-07-19 21:12:34,407 INFO L242 Difference]: Finished difference. Result has 108 places, 101 transitions, 320 flow [2022-07-19 21:12:34,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=320, PETRI_PLACES=108, PETRI_TRANSITIONS=101} [2022-07-19 21:12:34,408 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 10 predicate places. [2022-07-19 21:12:34,408 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 101 transitions, 320 flow [2022-07-19 21:12:34,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,408 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:34,408 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:34,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:12:34,409 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:34,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:34,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1225581279, now seen corresponding path program 1 times [2022-07-19 21:12:34,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:34,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224641340] [2022-07-19 21:12:34,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:34,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:34,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:34,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224641340] [2022-07-19 21:12:34,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224641340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:34,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:34,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:12:34,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065668178] [2022-07-19 21:12:34,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:34,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:12:34,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:34,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:12:34,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:12:34,468 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 131 [2022-07-19 21:12:34,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 101 transitions, 320 flow. Second operand has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:34,469 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 131 [2022-07-19 21:12:34,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:35,759 INFO L129 PetriNetUnfolder]: 4859/11815 cut-off events. [2022-07-19 21:12:35,760 INFO L130 PetriNetUnfolder]: For 9938/9938 co-relation queries the response was YES. [2022-07-19 21:12:35,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29439 conditions, 11815 events. 4859/11815 cut-off events. For 9938/9938 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 123251 event pairs, 1050 based on Foata normal form. 65/11505 useless extension candidates. Maximal degree in co-relation 29397. Up to 2287 conditions per place. [2022-07-19 21:12:35,978 INFO L132 encePairwiseOnDemand]: 121/131 looper letters, 166 selfloop transitions, 54 changer transitions 0/284 dead transitions. [2022-07-19 21:12:35,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 284 transitions, 1669 flow [2022-07-19 21:12:35,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:12:35,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:12:35,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2023 transitions. [2022-07-19 21:12:35,981 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8127762153475291 [2022-07-19 21:12:35,981 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2023 transitions. [2022-07-19 21:12:35,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2023 transitions. [2022-07-19 21:12:35,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:35,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2023 transitions. [2022-07-19 21:12:35,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 106.47368421052632) internal successors, (2023), 19 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:35,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:35,989 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:36,003 INFO L186 Difference]: Start difference. First operand has 108 places, 101 transitions, 320 flow. Second operand 19 states and 2023 transitions. [2022-07-19 21:12:36,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 284 transitions, 1669 flow [2022-07-19 21:12:36,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 284 transitions, 1669 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:12:36,046 INFO L242 Difference]: Finished difference. Result has 137 places, 140 transitions, 794 flow [2022-07-19 21:12:36,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=794, PETRI_PLACES=137, PETRI_TRANSITIONS=140} [2022-07-19 21:12:36,047 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 39 predicate places. [2022-07-19 21:12:36,047 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 140 transitions, 794 flow [2022-07-19 21:12:36,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:36,049 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:36,049 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:36,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:12:36,050 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:36,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:36,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1933405436, now seen corresponding path program 1 times [2022-07-19 21:12:36,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:36,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442347926] [2022-07-19 21:12:36,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:36,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 21:12:36,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:36,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442347926] [2022-07-19 21:12:36,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442347926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:36,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:36,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:12:36,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717046301] [2022-07-19 21:12:36,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:36,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:12:36,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:36,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:12:36,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:12:36,117 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 131 [2022-07-19 21:12:36,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 140 transitions, 794 flow. Second operand has 7 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:36,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:36,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 131 [2022-07-19 21:12:36,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:38,769 INFO L129 PetriNetUnfolder]: 7508/19212 cut-off events. [2022-07-19 21:12:38,770 INFO L130 PetriNetUnfolder]: For 62206/62206 co-relation queries the response was YES. [2022-07-19 21:12:38,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65870 conditions, 19212 events. 7508/19212 cut-off events. For 62206/62206 co-relation queries the response was YES. Maximal size of possible extension queue 1446. Compared 228346 event pairs, 1832 based on Foata normal form. 108/18764 useless extension candidates. Maximal degree in co-relation 65815. Up to 4037 conditions per place. [2022-07-19 21:12:39,192 INFO L132 encePairwiseOnDemand]: 121/131 looper letters, 226 selfloop transitions, 102 changer transitions 0/392 dead transitions. [2022-07-19 21:12:39,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 392 transitions, 3611 flow [2022-07-19 21:12:39,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:12:39,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:12:39,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2021 transitions. [2022-07-19 21:12:39,209 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8119726797910808 [2022-07-19 21:12:39,209 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2021 transitions. [2022-07-19 21:12:39,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2021 transitions. [2022-07-19 21:12:39,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:39,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2021 transitions. [2022-07-19 21:12:39,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 106.36842105263158) internal successors, (2021), 19 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:39,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:39,227 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:39,227 INFO L186 Difference]: Start difference. First operand has 137 places, 140 transitions, 794 flow. Second operand 19 states and 2021 transitions. [2022-07-19 21:12:39,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 392 transitions, 3611 flow [2022-07-19 21:12:39,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 392 transitions, 3286 flow, removed 136 selfloop flow, removed 3 redundant places. [2022-07-19 21:12:39,602 INFO L242 Difference]: Finished difference. Result has 163 places, 213 transitions, 1825 flow [2022-07-19 21:12:39,603 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1825, PETRI_PLACES=163, PETRI_TRANSITIONS=213} [2022-07-19 21:12:39,609 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 65 predicate places. [2022-07-19 21:12:39,611 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 213 transitions, 1825 flow [2022-07-19 21:12:39,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:39,615 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:39,615 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:39,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:12:39,615 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:39,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:39,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1164470650, now seen corresponding path program 1 times [2022-07-19 21:12:39,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:39,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307384411] [2022-07-19 21:12:39,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:39,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 21:12:39,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:39,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307384411] [2022-07-19 21:12:39,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307384411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:39,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:39,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:12:39,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949385108] [2022-07-19 21:12:39,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:39,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:12:39,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:39,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:12:39,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:12:39,725 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 131 [2022-07-19 21:12:39,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 213 transitions, 1825 flow. Second operand has 9 states, 9 states have (on average 95.66666666666667) internal successors, (861), 9 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:39,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:39,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 131 [2022-07-19 21:12:39,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:44,189 INFO L129 PetriNetUnfolder]: 9460/26062 cut-off events. [2022-07-19 21:12:44,189 INFO L130 PetriNetUnfolder]: For 155821/155821 co-relation queries the response was YES. [2022-07-19 21:12:44,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97483 conditions, 26062 events. 9460/26062 cut-off events. For 155821/155821 co-relation queries the response was YES. Maximal size of possible extension queue 1834. Compared 329171 event pairs, 1908 based on Foata normal form. 19/25137 useless extension candidates. Maximal degree in co-relation 97416. Up to 4102 conditions per place. [2022-07-19 21:12:44,728 INFO L132 encePairwiseOnDemand]: 120/131 looper letters, 345 selfloop transitions, 204 changer transitions 0/612 dead transitions. [2022-07-19 21:12:44,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 612 transitions, 6450 flow [2022-07-19 21:12:44,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-19 21:12:44,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-07-19 21:12:44,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4707 transitions. [2022-07-19 21:12:44,732 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7984732824427481 [2022-07-19 21:12:44,733 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4707 transitions. [2022-07-19 21:12:44,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4707 transitions. [2022-07-19 21:12:44,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:44,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4707 transitions. [2022-07-19 21:12:44,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 104.6) internal successors, (4707), 45 states have internal predecessors, (4707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:44,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:44,745 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:44,745 INFO L186 Difference]: Start difference. First operand has 163 places, 213 transitions, 1825 flow. Second operand 45 states and 4707 transitions. [2022-07-19 21:12:44,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 612 transitions, 6450 flow [2022-07-19 21:12:45,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 612 transitions, 6104 flow, removed 173 selfloop flow, removed 0 redundant places. [2022-07-19 21:12:45,909 INFO L242 Difference]: Finished difference. Result has 219 places, 300 transitions, 3326 flow [2022-07-19 21:12:45,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=3326, PETRI_PLACES=219, PETRI_TRANSITIONS=300} [2022-07-19 21:12:45,909 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 121 predicate places. [2022-07-19 21:12:45,910 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 300 transitions, 3326 flow [2022-07-19 21:12:45,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 95.66666666666667) internal successors, (861), 9 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:45,911 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:45,911 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:45,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:12:45,911 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:45,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:45,912 INFO L85 PathProgramCache]: Analyzing trace with hash 797242042, now seen corresponding path program 2 times [2022-07-19 21:12:45,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:45,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879715473] [2022-07-19 21:12:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:45,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 21:12:45,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:45,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879715473] [2022-07-19 21:12:45,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879715473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:45,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:45,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:12:45,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097650590] [2022-07-19 21:12:45,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:45,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:12:45,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:45,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:12:45,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:12:45,960 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 131 [2022-07-19 21:12:45,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 300 transitions, 3326 flow. Second operand has 9 states, 9 states have (on average 95.66666666666667) internal successors, (861), 9 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:45,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:45,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 131 [2022-07-19 21:12:45,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:50,588 INFO L129 PetriNetUnfolder]: 9851/26613 cut-off events. [2022-07-19 21:12:50,588 INFO L130 PetriNetUnfolder]: For 244938/244938 co-relation queries the response was YES. [2022-07-19 21:12:50,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113823 conditions, 26613 events. 9851/26613 cut-off events. For 244938/244938 co-relation queries the response was YES. Maximal size of possible extension queue 1966. Compared 337914 event pairs, 1512 based on Foata normal form. 19/25889 useless extension candidates. Maximal degree in co-relation 113742. Up to 3803 conditions per place. [2022-07-19 21:12:51,093 INFO L132 encePairwiseOnDemand]: 120/131 looper letters, 366 selfloop transitions, 240 changer transitions 0/669 dead transitions. [2022-07-19 21:12:51,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 669 transitions, 8225 flow [2022-07-19 21:12:51,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-19 21:12:51,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-07-19 21:12:51,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4707 transitions. [2022-07-19 21:12:51,097 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7984732824427481 [2022-07-19 21:12:51,097 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4707 transitions. [2022-07-19 21:12:51,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4707 transitions. [2022-07-19 21:12:51,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:51,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4707 transitions. [2022-07-19 21:12:51,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 104.6) internal successors, (4707), 45 states have internal predecessors, (4707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:51,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:51,108 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:51,108 INFO L186 Difference]: Start difference. First operand has 219 places, 300 transitions, 3326 flow. Second operand 45 states and 4707 transitions. [2022-07-19 21:12:51,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 669 transitions, 8225 flow [2022-07-19 21:12:53,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 669 transitions, 7737 flow, removed 179 selfloop flow, removed 12 redundant places. [2022-07-19 21:12:53,579 INFO L242 Difference]: Finished difference. Result has 263 places, 355 transitions, 4479 flow [2022-07-19 21:12:53,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4479, PETRI_PLACES=263, PETRI_TRANSITIONS=355} [2022-07-19 21:12:53,580 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 165 predicate places. [2022-07-19 21:12:53,580 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 355 transitions, 4479 flow [2022-07-19 21:12:53,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 95.66666666666667) internal successors, (861), 9 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:53,580 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:53,581 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:53,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:12:53,581 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:12:53,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:53,581 INFO L85 PathProgramCache]: Analyzing trace with hash -701023176, now seen corresponding path program 1 times [2022-07-19 21:12:53,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:53,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985126502] [2022-07-19 21:12:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:53,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 21:12:53,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:53,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985126502] [2022-07-19 21:12:53,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985126502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:53,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:53,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:12:53,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963530017] [2022-07-19 21:12:53,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:53,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:12:53,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:12:53,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:12:53,619 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 131 [2022-07-19 21:12:53,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 355 transitions, 4479 flow. Second operand has 7 states, 7 states have (on average 96.85714285714286) internal successors, (678), 7 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:53,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:53,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 131 [2022-07-19 21:12:53,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:13:00,444 INFO L129 PetriNetUnfolder]: 12295/32704 cut-off events. [2022-07-19 21:13:00,445 INFO L130 PetriNetUnfolder]: For 523354/523354 co-relation queries the response was YES. [2022-07-19 21:13:00,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178847 conditions, 32704 events. 12295/32704 cut-off events. For 523354/523354 co-relation queries the response was YES. Maximal size of possible extension queue 2728. Compared 436437 event pairs, 2567 based on Foata normal form. 201/32542 useless extension candidates. Maximal degree in co-relation 178754. Up to 5567 conditions per place. [2022-07-19 21:13:01,068 INFO L132 encePairwiseOnDemand]: 121/131 looper letters, 673 selfloop transitions, 317 changer transitions 0/1054 dead transitions. [2022-07-19 21:13:01,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 1054 transitions, 17846 flow [2022-07-19 21:13:01,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:13:01,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:13:01,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2010 transitions. [2022-07-19 21:13:01,072 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8075532342306148 [2022-07-19 21:13:01,072 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2010 transitions. [2022-07-19 21:13:01,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2010 transitions. [2022-07-19 21:13:01,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:13:01,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2010 transitions. [2022-07-19 21:13:01,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 105.78947368421052) internal successors, (2010), 19 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:01,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:01,077 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:01,077 INFO L186 Difference]: Start difference. First operand has 263 places, 355 transitions, 4479 flow. Second operand 19 states and 2010 transitions. [2022-07-19 21:13:01,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 1054 transitions, 17846 flow [2022-07-19 21:13:09,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 1054 transitions, 16524 flow, removed 489 selfloop flow, removed 18 redundant places. [2022-07-19 21:13:09,104 INFO L242 Difference]: Finished difference. Result has 274 places, 605 transitions, 9755 flow [2022-07-19 21:13:09,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=4089, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9755, PETRI_PLACES=274, PETRI_TRANSITIONS=605} [2022-07-19 21:13:09,105 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 176 predicate places. [2022-07-19 21:13:09,106 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 605 transitions, 9755 flow [2022-07-19 21:13:09,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.85714285714286) internal successors, (678), 7 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:09,106 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:13:09,106 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:13:09,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:13:09,107 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:13:09,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:13:09,107 INFO L85 PathProgramCache]: Analyzing trace with hash -930440522, now seen corresponding path program 1 times [2022-07-19 21:13:09,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:13:09,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007080954] [2022-07-19 21:13:09,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:13:09,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:13:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:13:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 21:13:09,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:13:09,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007080954] [2022-07-19 21:13:09,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007080954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:13:09,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:13:09,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:13:09,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040005784] [2022-07-19 21:13:09,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:13:09,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:13:09,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:13:09,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:13:09,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:13:09,155 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 131 [2022-07-19 21:13:09,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 605 transitions, 9755 flow. Second operand has 9 states, 9 states have (on average 95.77777777777777) internal successors, (862), 9 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:09,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:13:09,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 131 [2022-07-19 21:13:09,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:13:19,629 INFO L129 PetriNetUnfolder]: 15039/41514 cut-off events. [2022-07-19 21:13:19,629 INFO L130 PetriNetUnfolder]: For 815768/815768 co-relation queries the response was YES. [2022-07-19 21:13:20,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 233588 conditions, 41514 events. 15039/41514 cut-off events. For 815768/815768 co-relation queries the response was YES. Maximal size of possible extension queue 3275. Compared 577933 event pairs, 2201 based on Foata normal form. 43/40883 useless extension candidates. Maximal degree in co-relation 233484. Up to 6142 conditions per place. [2022-07-19 21:13:20,585 INFO L132 encePairwiseOnDemand]: 120/131 looper letters, 637 selfloop transitions, 604 changer transitions 0/1304 dead transitions. [2022-07-19 21:13:20,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 1304 transitions, 23635 flow [2022-07-19 21:13:20,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-19 21:13:20,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-07-19 21:13:20,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4697 transitions. [2022-07-19 21:13:20,589 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.796776929601357 [2022-07-19 21:13:20,589 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4697 transitions. [2022-07-19 21:13:20,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4697 transitions. [2022-07-19 21:13:20,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:13:20,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4697 transitions. [2022-07-19 21:13:20,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 104.37777777777778) internal successors, (4697), 45 states have internal predecessors, (4697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:20,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:20,599 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:20,599 INFO L186 Difference]: Start difference. First operand has 274 places, 605 transitions, 9755 flow. Second operand 45 states and 4697 transitions. [2022-07-19 21:13:20,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 1304 transitions, 23635 flow [2022-07-19 21:13:36,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 1304 transitions, 22357 flow, removed 639 selfloop flow, removed 0 redundant places. [2022-07-19 21:13:36,651 INFO L242 Difference]: Finished difference. Result has 330 places, 832 transitions, 15141 flow [2022-07-19 21:13:36,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=8827, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=385, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=15141, PETRI_PLACES=330, PETRI_TRANSITIONS=832} [2022-07-19 21:13:36,652 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 232 predicate places. [2022-07-19 21:13:36,652 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 832 transitions, 15141 flow [2022-07-19 21:13:36,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 95.77777777777777) internal successors, (862), 9 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:36,652 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:13:36,653 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:13:36,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:13:36,653 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:13:36,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:13:36,653 INFO L85 PathProgramCache]: Analyzing trace with hash 740571830, now seen corresponding path program 2 times [2022-07-19 21:13:36,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:13:36,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483224023] [2022-07-19 21:13:36,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:13:36,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:13:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:13:36,699 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 21:13:36,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:13:36,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483224023] [2022-07-19 21:13:36,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483224023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:13:36,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:13:36,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:13:36,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509129401] [2022-07-19 21:13:36,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:13:36,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:13:36,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:13:36,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:13:36,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:13:36,701 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 131 [2022-07-19 21:13:36,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 832 transitions, 15141 flow. Second operand has 9 states, 9 states have (on average 95.77777777777777) internal successors, (862), 9 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:36,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:13:36,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 131 [2022-07-19 21:13:36,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand