./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --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/weaver/parallel-ticket-4.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:30:20,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:30:20,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:30:20,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:30:20,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:30:20,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:30:20,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:30:20,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:30:20,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:30:20,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:30:20,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:30:20,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:30:20,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:30:20,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:30:20,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:30:20,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:30:20,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:30:20,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:30:20,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:30:20,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:30:20,155 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:30:20,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:30:20,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:30:20,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:30:20,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:30:20,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:30:20,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:30:20,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:30:20,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:30:20,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:30:20,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:30:20,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:30:20,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:30:20,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:30:20,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:30:20,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:30:20,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:30:20,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:30:20,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:30:20,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:30:20,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:30:20,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:30:20,176 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:30:20,200 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:30:20,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:30:20,207 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:30:20,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:30:20,208 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:30:20,208 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:30:20,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:30:20,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:30:20,210 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:30:20,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:30:20,211 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:30:20,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:30:20,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:30:20,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:30:20,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:30:20,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:30:20,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:30:20,212 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:30:20,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:30:20,213 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:30:20,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:30:20,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:30:20,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:30:20,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:30:20,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:30:20,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:30:20,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:30:20,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:30:20,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:30:20,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:30:20,215 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:30:20,215 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:30:20,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:30:20,216 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d [2022-07-19 21:30:20,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:30:20,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:30:20,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:30:20,485 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:30:20,485 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:30:20,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2022-07-19 21:30:20,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3697dc4d9/c0f2979e69814eb68abd5a2dd6c5d390/FLAG3ab4a4dd2 [2022-07-19 21:30:20,942 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:30:20,944 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2022-07-19 21:30:20,952 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3697dc4d9/c0f2979e69814eb68abd5a2dd6c5d390/FLAG3ab4a4dd2 [2022-07-19 21:30:21,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3697dc4d9/c0f2979e69814eb68abd5a2dd6c5d390 [2022-07-19 21:30:21,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:30:21,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:30:21,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:30:21,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:30:21,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:30:21,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:30:21" (1/1) ... [2022-07-19 21:30:21,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b017af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:21, skipping insertion in model container [2022-07-19 21:30:21,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:30:21" (1/1) ... [2022-07-19 21:30:21,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:30:21,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:30:21,588 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-07-19 21:30:21,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:30:21,606 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:30:21,647 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-07-19 21:30:21,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:30:21,667 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:30:21,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:21 WrapperNode [2022-07-19 21:30:21,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:30:21,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:30:21,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:30:21,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:30:21,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:21" (1/1) ... [2022-07-19 21:30:21,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:21" (1/1) ... [2022-07-19 21:30:21,729 INFO L137 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2022-07-19 21:30:21,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:30:21,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:30:21,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:30:21,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:30:21,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:21" (1/1) ... [2022-07-19 21:30:21,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:21" (1/1) ... [2022-07-19 21:30:21,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:21" (1/1) ... [2022-07-19 21:30:21,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:21" (1/1) ... [2022-07-19 21:30:21,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:21" (1/1) ... [2022-07-19 21:30:21,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:21" (1/1) ... [2022-07-19 21:30:21,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:21" (1/1) ... [2022-07-19 21:30:21,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:30:21,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:30:21,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:30:21,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:30:21,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:21" (1/1) ... [2022-07-19 21:30:21,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:30:21,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:30:21,785 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 21:30:21,786 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 21:30:21,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:30:21,820 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:30:21,820 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:30:21,820 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:30:21,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:30:21,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:30:21,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:30:21,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-19 21:30:21,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-19 21:30:21,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:30:21,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:30:21,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:30:21,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:30:21,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:30:21,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:30:21,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:30:21,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:30:21,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:30:21,823 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 21:30:21,900 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:30:21,902 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:30:22,162 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:30:22,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:30:22,227 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:30:22,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:22 BoogieIcfgContainer [2022-07-19 21:30:22,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:30:22,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:30:22,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:30:22,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:30:22,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:30:21" (1/3) ... [2022-07-19 21:30:22,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ab3026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:30:22, skipping insertion in model container [2022-07-19 21:30:22,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:21" (2/3) ... [2022-07-19 21:30:22,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ab3026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:30:22, skipping insertion in model container [2022-07-19 21:30:22,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:22" (3/3) ... [2022-07-19 21:30:22,241 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2022-07-19 21:30:22,246 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:30:22,255 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:30:22,255 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:30:22,256 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:30:22,309 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-19 21:30:22,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 153 places, 142 transitions, 316 flow [2022-07-19 21:30:22,399 INFO L129 PetriNetUnfolder]: 2/138 cut-off events. [2022-07-19 21:30:22,402 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-19 21:30:22,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 138 events. 2/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-07-19 21:30:22,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 142 transitions, 316 flow [2022-07-19 21:30:22,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 125 transitions, 274 flow [2022-07-19 21:30:22,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:30:22,430 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@1047a791, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@22852ebf [2022-07-19 21:30:22,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-19 21:30:22,483 INFO L129 PetriNetUnfolder]: 2/124 cut-off events. [2022-07-19 21:30:22,486 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-19 21:30:22,486 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:22,487 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:22,487 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:30:22,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:22,493 INFO L85 PathProgramCache]: Analyzing trace with hash 371553834, now seen corresponding path program 1 times [2022-07-19 21:30:22,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:22,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180156829] [2022-07-19 21:30:22,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:22,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:23,322 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 21:30:23,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:23,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180156829] [2022-07-19 21:30:23,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180156829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:23,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:23,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:30:23,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056373588] [2022-07-19 21:30:23,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:23,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:30:23,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:23,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:30:23,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:30:23,367 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 142 [2022-07-19 21:30:23,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 125 transitions, 274 flow. Second operand has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 0 states have call successors, (0), 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 21:30:23,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:23,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 142 [2022-07-19 21:30:23,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:24,466 INFO L129 PetriNetUnfolder]: 3366/5967 cut-off events. [2022-07-19 21:30:24,467 INFO L130 PetriNetUnfolder]: For 1096/1114 co-relation queries the response was YES. [2022-07-19 21:30:24,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11693 conditions, 5967 events. 3366/5967 cut-off events. For 1096/1114 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 39941 event pairs, 2346 based on Foata normal form. 3/5771 useless extension candidates. Maximal degree in co-relation 9336. Up to 2258 conditions per place. [2022-07-19 21:30:24,515 INFO L132 encePairwiseOnDemand]: 125/142 looper letters, 67 selfloop transitions, 13 changer transitions 12/176 dead transitions. [2022-07-19 21:30:24,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 176 transitions, 593 flow [2022-07-19 21:30:24,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:30:24,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:30:24,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1196 transitions. [2022-07-19 21:30:24,540 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.765685019206146 [2022-07-19 21:30:24,541 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1196 transitions. [2022-07-19 21:30:24,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1196 transitions. [2022-07-19 21:30:24,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:24,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1196 transitions. [2022-07-19 21:30:24,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 108.72727272727273) internal successors, (1196), 11 states have internal predecessors, (1196), 0 states have call successors, (0), 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 21:30:24,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 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 21:30:24,565 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 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 21:30:24,567 INFO L186 Difference]: Start difference. First operand has 136 places, 125 transitions, 274 flow. Second operand 11 states and 1196 transitions. [2022-07-19 21:30:24,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 176 transitions, 593 flow [2022-07-19 21:30:24,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 176 transitions, 555 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-19 21:30:24,579 INFO L242 Difference]: Finished difference. Result has 143 places, 128 transitions, 325 flow [2022-07-19 21:30:24,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=325, PETRI_PLACES=143, PETRI_TRANSITIONS=128} [2022-07-19 21:30:24,584 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 7 predicate places. [2022-07-19 21:30:24,584 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 128 transitions, 325 flow [2022-07-19 21:30:24,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 0 states have call successors, (0), 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 21:30:24,586 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:24,586 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:24,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:30:24,587 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:30:24,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:24,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2033235304, now seen corresponding path program 2 times [2022-07-19 21:30:24,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:24,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279480865] [2022-07-19 21:30:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:24,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:24,883 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 21:30:24,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:24,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279480865] [2022-07-19 21:30:24,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279480865] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:24,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:24,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:30:24,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758069641] [2022-07-19 21:30:24,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:24,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:30:24,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:24,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:30:24,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:30:24,898 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 142 [2022-07-19 21:30:24,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 128 transitions, 325 flow. Second operand has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 0 states have call successors, (0), 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 21:30:24,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:24,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 142 [2022-07-19 21:30:24,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:25,834 INFO L129 PetriNetUnfolder]: 3250/6205 cut-off events. [2022-07-19 21:30:25,834 INFO L130 PetriNetUnfolder]: For 2143/2143 co-relation queries the response was YES. [2022-07-19 21:30:25,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13401 conditions, 6205 events. 3250/6205 cut-off events. For 2143/2143 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 45512 event pairs, 1474 based on Foata normal form. 1/6038 useless extension candidates. Maximal degree in co-relation 13388. Up to 2935 conditions per place. [2022-07-19 21:30:25,876 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 46 selfloop transitions, 11 changer transitions 37/178 dead transitions. [2022-07-19 21:30:25,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 178 transitions, 667 flow [2022-07-19 21:30:25,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:30:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:30:25,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1089 transitions. [2022-07-19 21:30:25,880 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7669014084507042 [2022-07-19 21:30:25,880 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1089 transitions. [2022-07-19 21:30:25,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1089 transitions. [2022-07-19 21:30:25,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:25,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1089 transitions. [2022-07-19 21:30:25,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 108.9) internal successors, (1089), 10 states have internal predecessors, (1089), 0 states have call successors, (0), 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 21:30:25,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 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 21:30:25,888 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 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 21:30:25,888 INFO L186 Difference]: Start difference. First operand has 143 places, 128 transitions, 325 flow. Second operand 10 states and 1089 transitions. [2022-07-19 21:30:25,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 178 transitions, 667 flow [2022-07-19 21:30:25,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 178 transitions, 642 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-07-19 21:30:25,898 INFO L242 Difference]: Finished difference. Result has 145 places, 131 transitions, 371 flow [2022-07-19 21:30:25,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=371, PETRI_PLACES=145, PETRI_TRANSITIONS=131} [2022-07-19 21:30:25,899 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 9 predicate places. [2022-07-19 21:30:25,899 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 131 transitions, 371 flow [2022-07-19 21:30:25,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 0 states have call successors, (0), 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 21:30:25,901 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:25,901 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:25,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:30:25,902 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:30:25,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:25,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1894093600, now seen corresponding path program 3 times [2022-07-19 21:30:25,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:25,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799270370] [2022-07-19 21:30:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:25,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:26,056 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 21:30:26,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:26,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799270370] [2022-07-19 21:30:26,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799270370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:26,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:26,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:30:26,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608512261] [2022-07-19 21:30:26,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:26,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:30:26,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:26,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:30:26,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:30:26,061 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-19 21:30:26,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 131 transitions, 371 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 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 21:30:26,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:26,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-19 21:30:26,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:26,683 INFO L129 PetriNetUnfolder]: 1951/4749 cut-off events. [2022-07-19 21:30:26,683 INFO L130 PetriNetUnfolder]: For 2248/2590 co-relation queries the response was YES. [2022-07-19 21:30:26,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9657 conditions, 4749 events. 1951/4749 cut-off events. For 2248/2590 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 41160 event pairs, 497 based on Foata normal form. 82/4628 useless extension candidates. Maximal degree in co-relation 9642. Up to 986 conditions per place. [2022-07-19 21:30:26,723 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 61 selfloop transitions, 19 changer transitions 0/177 dead transitions. [2022-07-19 21:30:26,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 177 transitions, 636 flow [2022-07-19 21:30:26,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:30:26,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:30:26,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 802 transitions. [2022-07-19 21:30:26,726 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.806841046277666 [2022-07-19 21:30:26,726 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 802 transitions. [2022-07-19 21:30:26,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 802 transitions. [2022-07-19 21:30:26,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:26,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 802 transitions. [2022-07-19 21:30:26,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.57142857142857) internal successors, (802), 7 states have internal predecessors, (802), 0 states have call successors, (0), 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 21:30:26,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 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 21:30:26,731 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 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 21:30:26,731 INFO L186 Difference]: Start difference. First operand has 145 places, 131 transitions, 371 flow. Second operand 7 states and 802 transitions. [2022-07-19 21:30:26,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 177 transitions, 636 flow [2022-07-19 21:30:26,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 177 transitions, 597 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-07-19 21:30:26,742 INFO L242 Difference]: Finished difference. Result has 141 places, 147 transitions, 440 flow [2022-07-19 21:30:26,743 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=440, PETRI_PLACES=141, PETRI_TRANSITIONS=147} [2022-07-19 21:30:26,744 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 5 predicate places. [2022-07-19 21:30:26,744 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 147 transitions, 440 flow [2022-07-19 21:30:26,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 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 21:30:26,744 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:26,745 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:26,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:30:26,745 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:30:26,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:26,746 INFO L85 PathProgramCache]: Analyzing trace with hash 513937608, now seen corresponding path program 4 times [2022-07-19 21:30:26,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:26,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959939932] [2022-07-19 21:30:26,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:26,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:26,897 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 21:30:26,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:26,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959939932] [2022-07-19 21:30:26,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959939932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:26,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:26,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:30:26,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065291917] [2022-07-19 21:30:26,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:26,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:30:26,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:26,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:30:26,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:30:26,906 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-19 21:30:26,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 147 transitions, 440 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 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 21:30:26,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:26,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-19 21:30:26,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:27,517 INFO L129 PetriNetUnfolder]: 1900/4565 cut-off events. [2022-07-19 21:30:27,517 INFO L130 PetriNetUnfolder]: For 2940/3263 co-relation queries the response was YES. [2022-07-19 21:30:27,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11300 conditions, 4565 events. 1900/4565 cut-off events. For 2940/3263 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 38797 event pairs, 505 based on Foata normal form. 153/4512 useless extension candidates. Maximal degree in co-relation 3466. Up to 949 conditions per place. [2022-07-19 21:30:27,557 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 59 selfloop transitions, 24 changer transitions 0/180 dead transitions. [2022-07-19 21:30:27,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 180 transitions, 719 flow [2022-07-19 21:30:27,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:30:27,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:30:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 800 transitions. [2022-07-19 21:30:27,560 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8048289738430584 [2022-07-19 21:30:27,560 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 800 transitions. [2022-07-19 21:30:27,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 800 transitions. [2022-07-19 21:30:27,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:27,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 800 transitions. [2022-07-19 21:30:27,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:30:27,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 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 21:30:27,628 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 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 21:30:27,628 INFO L186 Difference]: Start difference. First operand has 141 places, 147 transitions, 440 flow. Second operand 7 states and 800 transitions. [2022-07-19 21:30:27,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 180 transitions, 719 flow [2022-07-19 21:30:27,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 180 transitions, 715 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:30:27,641 INFO L242 Difference]: Finished difference. Result has 147 places, 153 transitions, 537 flow [2022-07-19 21:30:27,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=537, PETRI_PLACES=147, PETRI_TRANSITIONS=153} [2022-07-19 21:30:27,643 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 11 predicate places. [2022-07-19 21:30:27,643 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 153 transitions, 537 flow [2022-07-19 21:30:27,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 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 21:30:27,644 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:27,644 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:27,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:30:27,644 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:30:27,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:27,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2001922216, now seen corresponding path program 5 times [2022-07-19 21:30:27,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:27,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91560647] [2022-07-19 21:30:27,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:27,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:27,786 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 21:30:27,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:27,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91560647] [2022-07-19 21:30:27,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91560647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:27,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:27,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:30:27,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753816936] [2022-07-19 21:30:27,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:27,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:30:27,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:27,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:30:27,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:30:27,789 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-19 21:30:27,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 153 transitions, 537 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 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 21:30:27,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:27,791 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-19 21:30:27,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:28,374 INFO L129 PetriNetUnfolder]: 1718/4162 cut-off events. [2022-07-19 21:30:28,375 INFO L130 PetriNetUnfolder]: For 5042/5315 co-relation queries the response was YES. [2022-07-19 21:30:28,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12144 conditions, 4162 events. 1718/4162 cut-off events. For 5042/5315 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 35119 event pairs, 403 based on Foata normal form. 117/4084 useless extension candidates. Maximal degree in co-relation 6325. Up to 867 conditions per place. [2022-07-19 21:30:28,420 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 59 selfloop transitions, 31 changer transitions 1/188 dead transitions. [2022-07-19 21:30:28,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 188 transitions, 872 flow [2022-07-19 21:30:28,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:30:28,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:30:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 801 transitions. [2022-07-19 21:30:28,423 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8058350100603622 [2022-07-19 21:30:28,423 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 801 transitions. [2022-07-19 21:30:28,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 801 transitions. [2022-07-19 21:30:28,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:28,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 801 transitions. [2022-07-19 21:30:28,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 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 21:30:28,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 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 21:30:28,428 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 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 21:30:28,428 INFO L186 Difference]: Start difference. First operand has 147 places, 153 transitions, 537 flow. Second operand 7 states and 801 transitions. [2022-07-19 21:30:28,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 188 transitions, 872 flow [2022-07-19 21:30:28,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 188 transitions, 835 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:30:28,440 INFO L242 Difference]: Finished difference. Result has 151 places, 161 transitions, 653 flow [2022-07-19 21:30:28,440 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=653, PETRI_PLACES=151, PETRI_TRANSITIONS=161} [2022-07-19 21:30:28,442 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 15 predicate places. [2022-07-19 21:30:28,443 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 161 transitions, 653 flow [2022-07-19 21:30:28,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 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 21:30:28,443 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:28,444 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:28,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:30:28,444 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:30:28,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:28,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1871223698, now seen corresponding path program 6 times [2022-07-19 21:30:28,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:28,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7083659] [2022-07-19 21:30:28,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:28,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:28,592 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 21:30:28,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:28,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7083659] [2022-07-19 21:30:28,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7083659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:28,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:28,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:30:28,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865840996] [2022-07-19 21:30:28,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:28,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:30:28,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:28,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:30:28,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:30:28,596 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-19 21:30:28,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 161 transitions, 653 flow. Second operand has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 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 21:30:28,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:28,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-19 21:30:28,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:29,105 INFO L129 PetriNetUnfolder]: 1119/3106 cut-off events. [2022-07-19 21:30:29,105 INFO L130 PetriNetUnfolder]: For 5132/5371 co-relation queries the response was YES. [2022-07-19 21:30:29,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9347 conditions, 3106 events. 1119/3106 cut-off events. For 5132/5371 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 25542 event pairs, 175 based on Foata normal form. 157/3138 useless extension candidates. Maximal degree in co-relation 3632. Up to 682 conditions per place. [2022-07-19 21:30:29,139 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 69 selfloop transitions, 69 changer transitions 9/240 dead transitions. [2022-07-19 21:30:29,140 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 240 transitions, 1348 flow [2022-07-19 21:30:29,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:30:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:30:29,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 925 transitions. [2022-07-19 21:30:29,143 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8142605633802817 [2022-07-19 21:30:29,143 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 925 transitions. [2022-07-19 21:30:29,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 925 transitions. [2022-07-19 21:30:29,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:29,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 925 transitions. [2022-07-19 21:30:29,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.625) internal successors, (925), 8 states have internal predecessors, (925), 0 states have call successors, (0), 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 21:30:29,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 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 21:30:29,150 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 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 21:30:29,150 INFO L186 Difference]: Start difference. First operand has 151 places, 161 transitions, 653 flow. Second operand 8 states and 925 transitions. [2022-07-19 21:30:29,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 240 transitions, 1348 flow [2022-07-19 21:30:29,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 240 transitions, 1286 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-19 21:30:29,160 INFO L242 Difference]: Finished difference. Result has 154 places, 195 transitions, 1068 flow [2022-07-19 21:30:29,161 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1068, PETRI_PLACES=154, PETRI_TRANSITIONS=195} [2022-07-19 21:30:29,163 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 18 predicate places. [2022-07-19 21:30:29,163 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 195 transitions, 1068 flow [2022-07-19 21:30:29,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 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 21:30:29,164 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:29,165 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:29,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:30:29,165 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:30:29,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:29,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1095916598, now seen corresponding path program 7 times [2022-07-19 21:30:29,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:29,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036560586] [2022-07-19 21:30:29,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:29,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:29,348 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 21:30:29,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:29,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036560586] [2022-07-19 21:30:29,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036560586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:29,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:29,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:30:29,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425558510] [2022-07-19 21:30:29,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:29,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:30:29,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:29,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:30:29,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:30:29,355 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-19 21:30:29,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 195 transitions, 1068 flow. Second operand has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 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 21:30:29,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:29,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-19 21:30:29,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:29,761 INFO L129 PetriNetUnfolder]: 992/2779 cut-off events. [2022-07-19 21:30:29,762 INFO L130 PetriNetUnfolder]: For 8114/8729 co-relation queries the response was YES. [2022-07-19 21:30:29,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9467 conditions, 2779 events. 992/2779 cut-off events. For 8114/8729 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 22468 event pairs, 150 based on Foata normal form. 300/2967 useless extension candidates. Maximal degree in co-relation 3571. Up to 597 conditions per place. [2022-07-19 21:30:29,788 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 69 selfloop transitions, 72 changer transitions 2/236 dead transitions. [2022-07-19 21:30:29,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 236 transitions, 1546 flow [2022-07-19 21:30:29,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:30:29,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:30:29,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 922 transitions. [2022-07-19 21:30:29,791 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8116197183098591 [2022-07-19 21:30:29,791 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 922 transitions. [2022-07-19 21:30:29,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 922 transitions. [2022-07-19 21:30:29,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:29,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 922 transitions. [2022-07-19 21:30:29,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.25) internal successors, (922), 8 states have internal predecessors, (922), 0 states have call successors, (0), 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 21:30:29,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 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 21:30:29,796 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 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 21:30:29,796 INFO L186 Difference]: Start difference. First operand has 154 places, 195 transitions, 1068 flow. Second operand 8 states and 922 transitions. [2022-07-19 21:30:29,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 236 transitions, 1546 flow [2022-07-19 21:30:29,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 236 transitions, 1516 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-07-19 21:30:29,808 INFO L242 Difference]: Finished difference. Result has 159 places, 198 transitions, 1247 flow [2022-07-19 21:30:29,808 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1247, PETRI_PLACES=159, PETRI_TRANSITIONS=198} [2022-07-19 21:30:29,809 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 23 predicate places. [2022-07-19 21:30:29,809 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 198 transitions, 1247 flow [2022-07-19 21:30:29,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 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 21:30:29,810 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:29,810 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:29,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:30:29,810 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:30:29,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:29,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1036232522, now seen corresponding path program 8 times [2022-07-19 21:30:29,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:29,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529273581] [2022-07-19 21:30:29,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:29,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:29,919 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 21:30:29,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:29,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529273581] [2022-07-19 21:30:29,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529273581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:29,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:29,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:30:29,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167853050] [2022-07-19 21:30:29,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:29,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:30:29,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:29,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:30:29,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:30:29,923 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-19 21:30:29,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 198 transitions, 1247 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 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 21:30:29,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:29,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-19 21:30:29,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:30,452 INFO L129 PetriNetUnfolder]: 1024/2863 cut-off events. [2022-07-19 21:30:30,453 INFO L130 PetriNetUnfolder]: For 11624/12263 co-relation queries the response was YES. [2022-07-19 21:30:30,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10919 conditions, 2863 events. 1024/2863 cut-off events. For 11624/12263 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 23435 event pairs, 130 based on Foata normal form. 302/3048 useless extension candidates. Maximal degree in co-relation 8228. Up to 599 conditions per place. [2022-07-19 21:30:30,493 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 80 selfloop transitions, 91 changer transitions 1/265 dead transitions. [2022-07-19 21:30:30,494 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 265 transitions, 2059 flow [2022-07-19 21:30:30,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:30:30,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:30:30,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1149 transitions. [2022-07-19 21:30:30,498 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8091549295774648 [2022-07-19 21:30:30,498 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1149 transitions. [2022-07-19 21:30:30,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1149 transitions. [2022-07-19 21:30:30,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:30,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1149 transitions. [2022-07-19 21:30:30,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 114.9) internal successors, (1149), 10 states have internal predecessors, (1149), 0 states have call successors, (0), 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 21:30:30,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 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 21:30:30,506 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 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 21:30:30,506 INFO L186 Difference]: Start difference. First operand has 159 places, 198 transitions, 1247 flow. Second operand 10 states and 1149 transitions. [2022-07-19 21:30:30,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 265 transitions, 2059 flow [2022-07-19 21:30:30,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 265 transitions, 1870 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-07-19 21:30:30,524 INFO L242 Difference]: Finished difference. Result has 163 places, 217 transitions, 1559 flow [2022-07-19 21:30:30,525 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1559, PETRI_PLACES=163, PETRI_TRANSITIONS=217} [2022-07-19 21:30:30,526 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 27 predicate places. [2022-07-19 21:30:30,527 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 217 transitions, 1559 flow [2022-07-19 21:30:30,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 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 21:30:30,528 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:30,528 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:30,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:30:30,528 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:30:30,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash 112718612, now seen corresponding path program 9 times [2022-07-19 21:30:30,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:30,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518990379] [2022-07-19 21:30:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:30,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:30,660 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 21:30:30,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:30,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518990379] [2022-07-19 21:30:30,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518990379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:30,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:30,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:30:30,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717247624] [2022-07-19 21:30:30,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:30,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:30:30,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:30,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:30:30,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:30:30,664 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-19 21:30:30,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 217 transitions, 1559 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 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 21:30:30,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:30,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-19 21:30:30,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:31,165 INFO L129 PetriNetUnfolder]: 891/2672 cut-off events. [2022-07-19 21:30:31,165 INFO L130 PetriNetUnfolder]: For 11093/11622 co-relation queries the response was YES. [2022-07-19 21:30:31,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10126 conditions, 2672 events. 891/2672 cut-off events. For 11093/11622 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 21976 event pairs, 123 based on Foata normal form. 295/2870 useless extension candidates. Maximal degree in co-relation 3782. Up to 533 conditions per place. [2022-07-19 21:30:31,194 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 77 selfloop transitions, 98 changer transitions 11/279 dead transitions. [2022-07-19 21:30:31,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 279 transitions, 2338 flow [2022-07-19 21:30:31,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:30:31,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:30:31,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1150 transitions. [2022-07-19 21:30:31,198 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8098591549295775 [2022-07-19 21:30:31,198 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1150 transitions. [2022-07-19 21:30:31,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1150 transitions. [2022-07-19 21:30:31,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:31,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1150 transitions. [2022-07-19 21:30:31,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:30:31,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 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 21:30:31,204 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 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 21:30:31,205 INFO L186 Difference]: Start difference. First operand has 163 places, 217 transitions, 1559 flow. Second operand 10 states and 1150 transitions. [2022-07-19 21:30:31,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 279 transitions, 2338 flow [2022-07-19 21:30:31,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 279 transitions, 2204 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-19 21:30:31,220 INFO L242 Difference]: Finished difference. Result has 169 places, 224 transitions, 1750 flow [2022-07-19 21:30:31,221 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1750, PETRI_PLACES=169, PETRI_TRANSITIONS=224} [2022-07-19 21:30:31,221 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 33 predicate places. [2022-07-19 21:30:31,222 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 224 transitions, 1750 flow [2022-07-19 21:30:31,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 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 21:30:31,222 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:31,223 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:31,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:30:31,223 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:30:31,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:31,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2137251206, now seen corresponding path program 10 times [2022-07-19 21:30:31,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:31,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450938788] [2022-07-19 21:30:31,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:31,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:31,330 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 21:30:31,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:31,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450938788] [2022-07-19 21:30:31,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450938788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:31,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:31,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:30:31,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942270283] [2022-07-19 21:30:31,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:31,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:30:31,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:31,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:30:31,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:30:31,334 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-19 21:30:31,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 224 transitions, 1750 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 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 21:30:31,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:31,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-19 21:30:31,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:31,748 INFO L129 PetriNetUnfolder]: 646/2148 cut-off events. [2022-07-19 21:30:31,749 INFO L130 PetriNetUnfolder]: For 11286/11833 co-relation queries the response was YES. [2022-07-19 21:30:31,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8725 conditions, 2148 events. 646/2148 cut-off events. For 11286/11833 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 17374 event pairs, 79 based on Foata normal form. 286/2368 useless extension candidates. Maximal degree in co-relation 3898. Up to 440 conditions per place. [2022-07-19 21:30:31,766 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 76 selfloop transitions, 108 changer transitions 18/295 dead transitions. [2022-07-19 21:30:31,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 295 transitions, 2784 flow [2022-07-19 21:30:31,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:30:31,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:30:31,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1146 transitions. [2022-07-19 21:30:31,770 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8070422535211268 [2022-07-19 21:30:31,770 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1146 transitions. [2022-07-19 21:30:31,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1146 transitions. [2022-07-19 21:30:31,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:31,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1146 transitions. [2022-07-19 21:30:31,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 114.6) internal successors, (1146), 10 states have internal predecessors, (1146), 0 states have call successors, (0), 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 21:30:31,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 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 21:30:31,776 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 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 21:30:31,776 INFO L186 Difference]: Start difference. First operand has 169 places, 224 transitions, 1750 flow. Second operand 10 states and 1146 transitions. [2022-07-19 21:30:31,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 295 transitions, 2784 flow [2022-07-19 21:30:31,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 295 transitions, 2667 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-19 21:30:31,792 INFO L242 Difference]: Finished difference. Result has 175 places, 233 transitions, 2043 flow [2022-07-19 21:30:31,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2043, PETRI_PLACES=175, PETRI_TRANSITIONS=233} [2022-07-19 21:30:31,793 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 39 predicate places. [2022-07-19 21:30:31,794 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 233 transitions, 2043 flow [2022-07-19 21:30:31,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 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 21:30:31,794 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:31,795 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:31,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:30:31,795 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:30:31,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1769139122, now seen corresponding path program 11 times [2022-07-19 21:30:31,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:31,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279275694] [2022-07-19 21:30:31,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:31,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:31,926 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 21:30:31,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:31,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279275694] [2022-07-19 21:30:31,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279275694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:31,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:31,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:30:31,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082976563] [2022-07-19 21:30:31,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:31,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:30:31,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:31,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:30:31,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:30:31,930 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-19 21:30:31,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 233 transitions, 2043 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 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 21:30:31,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:31,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-19 21:30:31,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:32,330 INFO L129 PetriNetUnfolder]: 551/1977 cut-off events. [2022-07-19 21:30:32,330 INFO L130 PetriNetUnfolder]: For 10812/11136 co-relation queries the response was YES. [2022-07-19 21:30:32,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8026 conditions, 1977 events. 551/1977 cut-off events. For 10812/11136 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 15648 event pairs, 53 based on Foata normal form. 142/2052 useless extension candidates. Maximal degree in co-relation 4403. Up to 371 conditions per place. [2022-07-19 21:30:32,347 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 58 selfloop transitions, 140 changer transitions 11/302 dead transitions. [2022-07-19 21:30:32,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 302 transitions, 3041 flow [2022-07-19 21:30:32,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:30:32,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:30:32,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1133 transitions. [2022-07-19 21:30:32,351 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.797887323943662 [2022-07-19 21:30:32,351 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1133 transitions. [2022-07-19 21:30:32,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1133 transitions. [2022-07-19 21:30:32,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:32,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1133 transitions. [2022-07-19 21:30:32,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.3) internal successors, (1133), 10 states have internal predecessors, (1133), 0 states have call successors, (0), 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 21:30:32,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 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 21:30:32,358 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 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 21:30:32,358 INFO L186 Difference]: Start difference. First operand has 175 places, 233 transitions, 2043 flow. Second operand 10 states and 1133 transitions. [2022-07-19 21:30:32,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 302 transitions, 3041 flow [2022-07-19 21:30:32,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 302 transitions, 2982 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:30:32,382 INFO L242 Difference]: Finished difference. Result has 181 places, 259 transitions, 2604 flow [2022-07-19 21:30:32,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2604, PETRI_PLACES=181, PETRI_TRANSITIONS=259} [2022-07-19 21:30:32,383 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 45 predicate places. [2022-07-19 21:30:32,383 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 259 transitions, 2604 flow [2022-07-19 21:30:32,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 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 21:30:32,384 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:32,384 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:32,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:30:32,385 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:30:32,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:32,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2091271614, now seen corresponding path program 12 times [2022-07-19 21:30:32,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:32,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390708599] [2022-07-19 21:30:32,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:32,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:32,506 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 21:30:32,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:32,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390708599] [2022-07-19 21:30:32,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390708599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:32,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:32,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:30:32,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120724508] [2022-07-19 21:30:32,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:32,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:30:32,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:32,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:30:32,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:30:32,510 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-19 21:30:32,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 259 transitions, 2604 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 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 21:30:32,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:32,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-19 21:30:32,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:32,915 INFO L129 PetriNetUnfolder]: 513/1876 cut-off events. [2022-07-19 21:30:32,915 INFO L130 PetriNetUnfolder]: For 11935/12186 co-relation queries the response was YES. [2022-07-19 21:30:32,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8064 conditions, 1876 events. 513/1876 cut-off events. For 11935/12186 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14871 event pairs, 64 based on Foata normal form. 127/1936 useless extension candidates. Maximal degree in co-relation 3646. Up to 347 conditions per place. [2022-07-19 21:30:32,932 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 61 selfloop transitions, 144 changer transitions 3/301 dead transitions. [2022-07-19 21:30:32,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 301 transitions, 3277 flow [2022-07-19 21:30:32,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:30:32,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:30:32,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1136 transitions. [2022-07-19 21:30:32,936 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-07-19 21:30:32,936 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1136 transitions. [2022-07-19 21:30:32,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1136 transitions. [2022-07-19 21:30:32,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:32,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1136 transitions. [2022-07-19 21:30:32,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.6) internal successors, (1136), 10 states have internal predecessors, (1136), 0 states have call successors, (0), 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 21:30:32,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 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 21:30:32,955 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 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 21:30:32,956 INFO L186 Difference]: Start difference. First operand has 181 places, 259 transitions, 2604 flow. Second operand 10 states and 1136 transitions. [2022-07-19 21:30:32,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 301 transitions, 3277 flow [2022-07-19 21:30:32,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 301 transitions, 3132 flow, removed 21 selfloop flow, removed 6 redundant places. [2022-07-19 21:30:32,982 INFO L242 Difference]: Finished difference. Result has 185 places, 263 transitions, 2824 flow [2022-07-19 21:30:32,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2824, PETRI_PLACES=185, PETRI_TRANSITIONS=263} [2022-07-19 21:30:32,983 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 49 predicate places. [2022-07-19 21:30:32,983 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 263 transitions, 2824 flow [2022-07-19 21:30:32,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 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 21:30:32,984 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:32,985 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:32,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:30:32,985 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:30:32,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:32,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1642231146, now seen corresponding path program 13 times [2022-07-19 21:30:32,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:32,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529159751] [2022-07-19 21:30:32,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:32,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:33,113 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 21:30:33,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:33,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529159751] [2022-07-19 21:30:33,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529159751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:33,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:33,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:30:33,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366130705] [2022-07-19 21:30:33,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:33,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:30:33,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:33,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:30:33,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:30:33,117 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-19 21:30:33,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 263 transitions, 2824 flow. Second operand has 10 states, 10 states have (on average 106.4) internal successors, (1064), 10 states have internal predecessors, (1064), 0 states have call successors, (0), 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 21:30:33,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:33,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-19 21:30:33,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:33,513 INFO L129 PetriNetUnfolder]: 513/1886 cut-off events. [2022-07-19 21:30:33,514 INFO L130 PetriNetUnfolder]: For 13517/13789 co-relation queries the response was YES. [2022-07-19 21:30:33,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8409 conditions, 1886 events. 513/1886 cut-off events. For 13517/13789 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14996 event pairs, 64 based on Foata normal form. 122/1941 useless extension candidates. Maximal degree in co-relation 3700. Up to 334 conditions per place. [2022-07-19 21:30:33,529 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 67 selfloop transitions, 141 changer transitions 8/309 dead transitions. [2022-07-19 21:30:33,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 309 transitions, 3526 flow [2022-07-19 21:30:33,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:30:33,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:30:33,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1248 transitions. [2022-07-19 21:30:33,532 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7989756722151088 [2022-07-19 21:30:33,532 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1248 transitions. [2022-07-19 21:30:33,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1248 transitions. [2022-07-19 21:30:33,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:33,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1248 transitions. [2022-07-19 21:30:33,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.45454545454545) internal successors, (1248), 11 states have internal predecessors, (1248), 0 states have call successors, (0), 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 21:30:33,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 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 21:30:33,537 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 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 21:30:33,537 INFO L186 Difference]: Start difference. First operand has 185 places, 263 transitions, 2824 flow. Second operand 11 states and 1248 transitions. [2022-07-19 21:30:33,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 309 transitions, 3526 flow [2022-07-19 21:30:33,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 309 transitions, 3357 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-07-19 21:30:33,572 INFO L242 Difference]: Finished difference. Result has 190 places, 260 transitions, 2886 flow [2022-07-19 21:30:33,572 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2657, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2886, PETRI_PLACES=190, PETRI_TRANSITIONS=260} [2022-07-19 21:30:33,573 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 54 predicate places. [2022-07-19 21:30:33,573 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 260 transitions, 2886 flow [2022-07-19 21:30:33,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 106.4) internal successors, (1064), 10 states have internal predecessors, (1064), 0 states have call successors, (0), 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 21:30:33,573 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:33,574 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:33,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:30:33,574 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:30:33,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:33,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1967407136, now seen corresponding path program 14 times [2022-07-19 21:30:33,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:33,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340884353] [2022-07-19 21:30:33,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:33,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:33,691 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 21:30:33,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:33,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340884353] [2022-07-19 21:30:33,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340884353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:33,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:33,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:30:33,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834633942] [2022-07-19 21:30:33,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:33,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:30:33,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:30:33,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:30:33,695 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-19 21:30:33,696 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 260 transitions, 2886 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 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 21:30:33,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:33,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-19 21:30:33,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:34,160 INFO L129 PetriNetUnfolder]: 506/1852 cut-off events. [2022-07-19 21:30:34,160 INFO L130 PetriNetUnfolder]: For 14825/15110 co-relation queries the response was YES. [2022-07-19 21:30:34,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8619 conditions, 1852 events. 506/1852 cut-off events. For 14825/15110 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14741 event pairs, 60 based on Foata normal form. 137/1916 useless extension candidates. Maximal degree in co-relation 6672. Up to 329 conditions per place. [2022-07-19 21:30:34,175 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 71 selfloop transitions, 146 changer transitions 10/320 dead transitions. [2022-07-19 21:30:34,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 320 transitions, 3803 flow [2022-07-19 21:30:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:30:34,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:30:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1571 transitions. [2022-07-19 21:30:34,179 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.790241448692153 [2022-07-19 21:30:34,179 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1571 transitions. [2022-07-19 21:30:34,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1571 transitions. [2022-07-19 21:30:34,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:34,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1571 transitions. [2022-07-19 21:30:34,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.21428571428571) internal successors, (1571), 14 states have internal predecessors, (1571), 0 states have call successors, (0), 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 21:30:34,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 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 21:30:34,186 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 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 21:30:34,186 INFO L186 Difference]: Start difference. First operand has 190 places, 260 transitions, 2886 flow. Second operand 14 states and 1571 transitions. [2022-07-19 21:30:34,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 320 transitions, 3803 flow [2022-07-19 21:30:34,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 320 transitions, 3639 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-07-19 21:30:34,214 INFO L242 Difference]: Finished difference. Result has 197 places, 265 transitions, 3119 flow [2022-07-19 21:30:34,215 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2749, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3119, PETRI_PLACES=197, PETRI_TRANSITIONS=265} [2022-07-19 21:30:34,215 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 61 predicate places. [2022-07-19 21:30:34,215 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 265 transitions, 3119 flow [2022-07-19 21:30:34,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 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 21:30:34,216 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:34,216 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:34,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:30:34,217 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:30:34,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:34,217 INFO L85 PathProgramCache]: Analyzing trace with hash -316378714, now seen corresponding path program 15 times [2022-07-19 21:30:34,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:34,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476238483] [2022-07-19 21:30:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:34,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:34,321 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 21:30:34,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:34,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476238483] [2022-07-19 21:30:34,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476238483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:34,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:34,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:30:34,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815251874] [2022-07-19 21:30:34,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:34,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:30:34,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:34,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:30:34,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:30:34,324 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-19 21:30:34,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 265 transitions, 3119 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 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 21:30:34,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:34,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-19 21:30:34,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:34,802 INFO L129 PetriNetUnfolder]: 509/1979 cut-off events. [2022-07-19 21:30:34,802 INFO L130 PetriNetUnfolder]: For 18004/18284 co-relation queries the response was YES. [2022-07-19 21:30:34,809 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9157 conditions, 1979 events. 509/1979 cut-off events. For 18004/18284 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16379 event pairs, 73 based on Foata normal form. 129/2040 useless extension candidates. Maximal degree in co-relation 4206. Up to 333 conditions per place. [2022-07-19 21:30:34,813 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 62 selfloop transitions, 122 changer transitions 54/331 dead transitions. [2022-07-19 21:30:34,813 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 331 transitions, 4174 flow [2022-07-19 21:30:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:30:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:30:34,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1574 transitions. [2022-07-19 21:30:34,824 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7917505030181087 [2022-07-19 21:30:34,824 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1574 transitions. [2022-07-19 21:30:34,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1574 transitions. [2022-07-19 21:30:34,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:34,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1574 transitions. [2022-07-19 21:30:34,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.42857142857143) internal successors, (1574), 14 states have internal predecessors, (1574), 0 states have call successors, (0), 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 21:30:34,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 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 21:30:34,834 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 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 21:30:34,834 INFO L186 Difference]: Start difference. First operand has 197 places, 265 transitions, 3119 flow. Second operand 14 states and 1574 transitions. [2022-07-19 21:30:34,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 331 transitions, 4174 flow [2022-07-19 21:30:34,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 331 transitions, 3846 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-07-19 21:30:34,865 INFO L242 Difference]: Finished difference. Result has 202 places, 241 transitions, 2586 flow [2022-07-19 21:30:34,866 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2823, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2586, PETRI_PLACES=202, PETRI_TRANSITIONS=241} [2022-07-19 21:30:34,866 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 66 predicate places. [2022-07-19 21:30:34,866 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 241 transitions, 2586 flow [2022-07-19 21:30:34,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 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 21:30:34,867 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:34,867 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:34,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:30:34,868 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:30:34,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:34,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1973674890, now seen corresponding path program 16 times [2022-07-19 21:30:34,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:34,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128182183] [2022-07-19 21:30:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:34,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:34,985 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 21:30:34,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:34,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128182183] [2022-07-19 21:30:34,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128182183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:34,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:34,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:30:34,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044413258] [2022-07-19 21:30:34,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:34,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:30:34,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:34,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:30:34,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:30:34,990 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-19 21:30:34,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 241 transitions, 2586 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 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 21:30:34,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:34,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-19 21:30:34,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:35,441 INFO L129 PetriNetUnfolder]: 433/1728 cut-off events. [2022-07-19 21:30:35,442 INFO L130 PetriNetUnfolder]: For 15922/16236 co-relation queries the response was YES. [2022-07-19 21:30:35,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8050 conditions, 1728 events. 433/1728 cut-off events. For 15922/16236 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 13808 event pairs, 69 based on Foata normal form. 148/1811 useless extension candidates. Maximal degree in co-relation 4142. Up to 305 conditions per place. [2022-07-19 21:30:35,455 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 66 selfloop transitions, 122 changer transitions 25/305 dead transitions. [2022-07-19 21:30:35,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 305 transitions, 3551 flow [2022-07-19 21:30:35,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:30:35,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:30:35,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1572 transitions. [2022-07-19 21:30:35,459 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7907444668008048 [2022-07-19 21:30:35,459 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1572 transitions. [2022-07-19 21:30:35,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1572 transitions. [2022-07-19 21:30:35,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:35,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1572 transitions. [2022-07-19 21:30:35,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.28571428571429) internal successors, (1572), 14 states have internal predecessors, (1572), 0 states have call successors, (0), 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 21:30:35,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 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 21:30:35,466 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 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 21:30:35,466 INFO L186 Difference]: Start difference. First operand has 202 places, 241 transitions, 2586 flow. Second operand 14 states and 1572 transitions. [2022-07-19 21:30:35,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 305 transitions, 3551 flow [2022-07-19 21:30:35,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 305 transitions, 3235 flow, removed 18 selfloop flow, removed 11 redundant places. [2022-07-19 21:30:35,497 INFO L242 Difference]: Finished difference. Result has 203 places, 239 transitions, 2525 flow [2022-07-19 21:30:35,497 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2525, PETRI_PLACES=203, PETRI_TRANSITIONS=239} [2022-07-19 21:30:35,497 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 67 predicate places. [2022-07-19 21:30:35,498 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 239 transitions, 2525 flow [2022-07-19 21:30:35,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 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 21:30:35,498 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:35,498 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:35,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:30:35,499 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:30:35,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:35,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1976414672, now seen corresponding path program 17 times [2022-07-19 21:30:35,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:35,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142766682] [2022-07-19 21:30:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:35,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:35,602 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 21:30:35,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:35,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142766682] [2022-07-19 21:30:35,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142766682] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:35,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:35,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:30:35,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319419389] [2022-07-19 21:30:35,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:35,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:30:35,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:35,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:30:35,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:30:35,607 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-19 21:30:35,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 239 transitions, 2525 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 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 21:30:35,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:35,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-19 21:30:35,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:35,835 INFO L129 PetriNetUnfolder]: 65/372 cut-off events. [2022-07-19 21:30:35,836 INFO L130 PetriNetUnfolder]: For 3252/3312 co-relation queries the response was YES. [2022-07-19 21:30:35,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2063 conditions, 372 events. 65/372 cut-off events. For 3252/3312 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2075 event pairs, 1 based on Foata normal form. 77/445 useless extension candidates. Maximal degree in co-relation 1663. Up to 65 conditions per place. [2022-07-19 21:30:35,838 INFO L132 encePairwiseOnDemand]: 132/142 looper letters, 0 selfloop transitions, 0 changer transitions 165/165 dead transitions. [2022-07-19 21:30:35,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 165 transitions, 1702 flow [2022-07-19 21:30:35,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:30:35,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:30:35,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1514 transitions. [2022-07-19 21:30:35,840 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.761569416498994 [2022-07-19 21:30:35,841 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1514 transitions. [2022-07-19 21:30:35,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1514 transitions. [2022-07-19 21:30:35,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:35,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1514 transitions. [2022-07-19 21:30:35,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.14285714285714) internal successors, (1514), 14 states have internal predecessors, (1514), 0 states have call successors, (0), 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 21:30:35,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 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 21:30:35,846 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 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 21:30:35,846 INFO L186 Difference]: Start difference. First operand has 203 places, 239 transitions, 2525 flow. Second operand 14 states and 1514 transitions. [2022-07-19 21:30:35,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 165 transitions, 1702 flow [2022-07-19 21:30:35,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 165 transitions, 1540 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-07-19 21:30:35,858 INFO L242 Difference]: Finished difference. Result has 172 places, 0 transitions, 0 flow [2022-07-19 21:30:35,858 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=172, PETRI_TRANSITIONS=0} [2022-07-19 21:30:35,858 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 36 predicate places. [2022-07-19 21:30:35,859 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 0 transitions, 0 flow [2022-07-19 21:30:35,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 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 21:30:35,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-19 21:30:35,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-07-19 21:30:35,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-19 21:30:35,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-07-19 21:30:35,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-07-19 21:30:35,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:30:35,863 INFO L356 BasicCegarLoop]: Path program histogram: [17] [2022-07-19 21:30:35,867 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:30:35,868 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:30:35,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:30:35 BasicIcfg [2022-07-19 21:30:35,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:30:35,874 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:30:35,874 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:30:35,874 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:30:35,875 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:22" (3/4) ... [2022-07-19 21:30:35,877 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:30:35,882 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-19 21:30:35,882 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-19 21:30:35,883 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-07-19 21:30:35,883 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2022-07-19 21:30:35,888 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-07-19 21:30:35,889 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:30:35,889 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:30:35,889 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:30:35,925 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:30:35,926 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:30:35,927 INFO L158 Benchmark]: Toolchain (without parser) took 14571.31ms. Allocated memory was 100.7MB in the beginning and 998.2MB in the end (delta: 897.6MB). Free memory was 65.0MB in the beginning and 285.9MB in the end (delta: -221.0MB). Peak memory consumption was 676.7MB. Max. memory is 16.1GB. [2022-07-19 21:30:35,927 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:30:35,927 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.16ms. Allocated memory is still 100.7MB. Free memory was 64.8MB in the beginning and 76.2MB in the end (delta: -11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 21:30:35,927 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.91ms. Allocated memory is still 100.7MB. Free memory was 76.2MB in the beginning and 74.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:30:35,928 INFO L158 Benchmark]: Boogie Preprocessor took 20.77ms. Allocated memory is still 100.7MB. Free memory was 74.2MB in the beginning and 72.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:30:35,928 INFO L158 Benchmark]: RCFGBuilder took 479.37ms. Allocated memory is still 100.7MB. Free memory was 72.6MB in the beginning and 53.2MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-19 21:30:35,928 INFO L158 Benchmark]: TraceAbstraction took 13641.30ms. Allocated memory was 100.7MB in the beginning and 998.2MB in the end (delta: 897.6MB). Free memory was 52.7MB in the beginning and 289.1MB in the end (delta: -236.4MB). Peak memory consumption was 662.7MB. Max. memory is 16.1GB. [2022-07-19 21:30:35,929 INFO L158 Benchmark]: Witness Printer took 51.73ms. Allocated memory is still 998.2MB. Free memory was 289.1MB in the beginning and 285.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 21:30:35,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.16ms. Allocated memory is still 100.7MB. Free memory was 64.8MB in the beginning and 76.2MB in the end (delta: -11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.91ms. Allocated memory is still 100.7MB. Free memory was 76.2MB in the beginning and 74.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.77ms. Allocated memory is still 100.7MB. Free memory was 74.2MB in the beginning and 72.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 479.37ms. Allocated memory is still 100.7MB. Free memory was 72.6MB in the beginning and 53.2MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 13641.30ms. Allocated memory was 100.7MB in the beginning and 998.2MB in the end (delta: 897.6MB). Free memory was 52.7MB in the beginning and 289.1MB in the end (delta: -236.4MB). Peak memory consumption was 662.7MB. Max. memory is 16.1GB. * Witness Printer took 51.73ms. Allocated memory is still 998.2MB. Free memory was 289.1MB in the beginning and 285.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 146]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 174 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.5s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1217 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1217 mSDsluCounter, 761 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1580 mSDsCounter, 591 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4115 IncrementalHoareTripleChecker+Invalid, 4706 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 591 mSolverCounterUnsat, 234 mSDtfsCounter, 4115 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 246 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3119occurred in iteration=14, InterpolantAutomatonStates: 175, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 2057 NumberOfCodeBlocks, 2057 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2040 ConstructedInterpolants, 0 QuantifiedInterpolants, 5408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-19 21:30:35,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE