./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-sre-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/chl-sre-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 672ab63d50f6d257836fb16bc257f69b3b166ee79333dc7cfe86a969c93c0f7f --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:42:25,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:42:25,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:42:25,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:42:25,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:42:25,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:42:25,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:42:25,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:42:25,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:42:25,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:42:25,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:42:25,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:42:25,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:42:25,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:42:25,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:42:25,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:42:25,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:42:25,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:42:25,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:42:25,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:42:25,364 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:42:25,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:42:25,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:42:25,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:42:25,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:42:25,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:42:25,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:42:25,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:42:25,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:42:25,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:42:25,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:42:25,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:42:25,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:42:25,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:42:25,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:42:25,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:42:25,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:42:25,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:42:25,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:42:25,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:42:25,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:42:25,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:42:25,387 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:42:25,415 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:42:25,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:42:25,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:42:25,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:42:25,417 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:42:25,418 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:42:25,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:42:25,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:42:25,419 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:42:25,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:42:25,420 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:42:25,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:42:25,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:42:25,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:42:25,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:42:25,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:42:25,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:42:25,421 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:42:25,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:42:25,421 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:42:25,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:42:25,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:42:25,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:42:25,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:42:25,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:42:25,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:42:25,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:42:25,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:42:25,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:42:25,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:42:25,423 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:42:25,424 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:42:25,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:42:25,424 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 672ab63d50f6d257836fb16bc257f69b3b166ee79333dc7cfe86a969c93c0f7f [2022-07-22 21:42:25,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:42:25,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:42:25,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:42:25,707 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:42:25,708 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:42:25,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-sre-trans.wvr.c [2022-07-22 21:42:25,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe44162d6/611ded1ad4ad46ec9a6a37c4bdf37522/FLAG5fb6c5b7b [2022-07-22 21:42:26,215 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:42:26,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-sre-trans.wvr.c [2022-07-22 21:42:26,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe44162d6/611ded1ad4ad46ec9a6a37c4bdf37522/FLAG5fb6c5b7b [2022-07-22 21:42:26,249 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe44162d6/611ded1ad4ad46ec9a6a37c4bdf37522 [2022-07-22 21:42:26,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:42:26,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:42:26,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:42:26,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:42:26,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:42:26,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:42:26" (1/1) ... [2022-07-22 21:42:26,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aadf3b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:26, skipping insertion in model container [2022-07-22 21:42:26,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:42:26" (1/1) ... [2022-07-22 21:42:26,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:42:26,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:42:26,509 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/chl-sre-trans.wvr.c[2272,2285] [2022-07-22 21:42:26,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:42:26,525 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:42:26,566 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/chl-sre-trans.wvr.c[2272,2285] [2022-07-22 21:42:26,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:42:26,580 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:42:26,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:26 WrapperNode [2022-07-22 21:42:26,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:42:26,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:42:26,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:42:26,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:42:26,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:26" (1/1) ... [2022-07-22 21:42:26,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:26" (1/1) ... [2022-07-22 21:42:26,626 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-07-22 21:42:26,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:42:26,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:42:26,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:42:26,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:42:26,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:26" (1/1) ... [2022-07-22 21:42:26,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:26" (1/1) ... [2022-07-22 21:42:26,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:26" (1/1) ... [2022-07-22 21:42:26,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:26" (1/1) ... [2022-07-22 21:42:26,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:26" (1/1) ... [2022-07-22 21:42:26,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:26" (1/1) ... [2022-07-22 21:42:26,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:26" (1/1) ... [2022-07-22 21:42:26,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:42:26,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:42:26,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:42:26,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:42:26,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:26" (1/1) ... [2022-07-22 21:42:26,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:42:26,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:42:26,709 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) [2022-07-22 21:42:26,731 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 [2022-07-22 21:42:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:42:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:42:26,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:42:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:42:26,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:42:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-22 21:42:26,753 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-22 21:42:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:42:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:42:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:42:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:42:26,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:42:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:42:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:42:26,755 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:42:26,822 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:42:26,824 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:42:27,012 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:42:27,043 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:42:27,044 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:42:27,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:42:27 BoogieIcfgContainer [2022-07-22 21:42:27,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:42:27,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:42:27,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:42:27,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:42:27,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:42:26" (1/3) ... [2022-07-22 21:42:27,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473900e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:42:27, skipping insertion in model container [2022-07-22 21:42:27,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:26" (2/3) ... [2022-07-22 21:42:27,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473900e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:42:27, skipping insertion in model container [2022-07-22 21:42:27,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:42:27" (3/3) ... [2022-07-22 21:42:27,053 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-trans.wvr.c [2022-07-22 21:42:27,072 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:42:27,080 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:42:27,080 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:42:27,095 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:42:27,150 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-22 21:42:27,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 116 transitions, 256 flow [2022-07-22 21:42:27,260 INFO L129 PetriNetUnfolder]: 7/113 cut-off events. [2022-07-22 21:42:27,261 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:42:27,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 113 events. 7/113 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-07-22 21:42:27,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 116 transitions, 256 flow [2022-07-22 21:42:27,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 102 transitions, 222 flow [2022-07-22 21:42:27,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:42:27,297 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@30f9cf48, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3cfa0494 [2022-07-22 21:42:27,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:42:27,336 INFO L129 PetriNetUnfolder]: 7/101 cut-off events. [2022-07-22 21:42:27,337 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:42:27,337 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:27,338 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] [2022-07-22 21:42:27,346 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:27,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:27,352 INFO L85 PathProgramCache]: Analyzing trace with hash -64104107, now seen corresponding path program 1 times [2022-07-22 21:42:27,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:27,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467462511] [2022-07-22 21:42:27,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:27,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:27,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:27,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467462511] [2022-07-22 21:42:27,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467462511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:27,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:27,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:42:27,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001323291] [2022-07-22 21:42:27,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:27,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:42:27,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:27,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:42:27,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:42:27,834 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 116 [2022-07-22 21:42:27,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:27,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:27,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 116 [2022-07-22 21:42:27,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:28,057 INFO L129 PetriNetUnfolder]: 83/396 cut-off events. [2022-07-22 21:42:28,057 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-07-22 21:42:28,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 396 events. 83/396 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1911 event pairs, 36 based on Foata normal form. 2/368 useless extension candidates. Maximal degree in co-relation 478. Up to 56 conditions per place. [2022-07-22 21:42:28,065 INFO L132 encePairwiseOnDemand]: 106/116 looper letters, 25 selfloop transitions, 5 changer transitions 6/117 dead transitions. [2022-07-22 21:42:28,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 117 transitions, 342 flow [2022-07-22 21:42:28,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:42:28,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:42:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 791 transitions. [2022-07-22 21:42:28,082 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8523706896551724 [2022-07-22 21:42:28,082 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 791 transitions. [2022-07-22 21:42:28,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 791 transitions. [2022-07-22 21:42:28,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:28,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 791 transitions. [2022-07-22 21:42:28,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 98.875) internal successors, (791), 8 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 116.0) internal successors, (1044), 9 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,100 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 116.0) internal successors, (1044), 9 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,101 INFO L186 Difference]: Start difference. First operand has 105 places, 102 transitions, 222 flow. Second operand 8 states and 791 transitions. [2022-07-22 21:42:28,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 117 transitions, 342 flow [2022-07-22 21:42:28,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 117 transitions, 318 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-22 21:42:28,109 INFO L242 Difference]: Finished difference. Result has 110 places, 102 transitions, 236 flow [2022-07-22 21:42:28,111 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=236, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2022-07-22 21:42:28,114 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, 5 predicate places. [2022-07-22 21:42:28,114 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 236 flow [2022-07-22 21:42:28,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,115 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:28,115 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] [2022-07-22 21:42:28,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:42:28,116 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:28,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:28,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1259756614, now seen corresponding path program 1 times [2022-07-22 21:42:28,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:28,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623223585] [2022-07-22 21:42:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:28,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:28,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:28,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623223585] [2022-07-22 21:42:28,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623223585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:28,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:28,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:42:28,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741342321] [2022-07-22 21:42:28,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:28,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:42:28,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:28,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:42:28,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:42:28,239 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 116 [2022-07-22 21:42:28,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:28,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 116 [2022-07-22 21:42:28,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:28,354 INFO L129 PetriNetUnfolder]: 27/294 cut-off events. [2022-07-22 21:42:28,355 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-07-22 21:42:28,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 294 events. 27/294 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1334 event pairs, 6 based on Foata normal form. 1/268 useless extension candidates. Maximal degree in co-relation 394. Up to 20 conditions per place. [2022-07-22 21:42:28,358 INFO L132 encePairwiseOnDemand]: 109/116 looper letters, 14 selfloop transitions, 3 changer transitions 10/114 dead transitions. [2022-07-22 21:42:28,358 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 114 transitions, 325 flow [2022-07-22 21:42:28,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:42:28,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:42:28,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 616 transitions. [2022-07-22 21:42:28,361 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8850574712643678 [2022-07-22 21:42:28,362 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 616 transitions. [2022-07-22 21:42:28,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 616 transitions. [2022-07-22 21:42:28,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:28,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 616 transitions. [2022-07-22 21:42:28,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,366 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,366 INFO L186 Difference]: Start difference. First operand has 110 places, 102 transitions, 236 flow. Second operand 6 states and 616 transitions. [2022-07-22 21:42:28,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 114 transitions, 325 flow [2022-07-22 21:42:28,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 114 transitions, 315 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-07-22 21:42:28,370 INFO L242 Difference]: Finished difference. Result has 111 places, 102 transitions, 246 flow [2022-07-22 21:42:28,370 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=111, PETRI_TRANSITIONS=102} [2022-07-22 21:42:28,371 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, 6 predicate places. [2022-07-22 21:42:28,371 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 102 transitions, 246 flow [2022-07-22 21:42:28,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,372 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:28,372 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] [2022-07-22 21:42:28,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:42:28,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:28,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:28,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1579643741, now seen corresponding path program 1 times [2022-07-22 21:42:28,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:28,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330778789] [2022-07-22 21:42:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:28,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:28,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:28,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330778789] [2022-07-22 21:42:28,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330778789] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:28,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:28,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:42:28,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621739803] [2022-07-22 21:42:28,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:28,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:42:28,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:28,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:42:28,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:42:28,487 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 116 [2022-07-22 21:42:28,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 102 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:28,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 116 [2022-07-22 21:42:28,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:28,629 INFO L129 PetriNetUnfolder]: 33/214 cut-off events. [2022-07-22 21:42:28,629 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-07-22 21:42:28,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 214 events. 33/214 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 846 event pairs, 18 based on Foata normal form. 1/197 useless extension candidates. Maximal degree in co-relation 355. Up to 59 conditions per place. [2022-07-22 21:42:28,632 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 30 selfloop transitions, 5 changer transitions 4/121 dead transitions. [2022-07-22 21:42:28,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 121 transitions, 384 flow [2022-07-22 21:42:28,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:42:28,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:42:28,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 893 transitions. [2022-07-22 21:42:28,635 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8553639846743295 [2022-07-22 21:42:28,635 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 893 transitions. [2022-07-22 21:42:28,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 893 transitions. [2022-07-22 21:42:28,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:28,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 893 transitions. [2022-07-22 21:42:28,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.22222222222223) internal successors, (893), 9 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,642 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,643 INFO L186 Difference]: Start difference. First operand has 111 places, 102 transitions, 246 flow. Second operand 9 states and 893 transitions. [2022-07-22 21:42:28,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 121 transitions, 384 flow [2022-07-22 21:42:28,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 121 transitions, 366 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-07-22 21:42:28,653 INFO L242 Difference]: Finished difference. Result has 119 places, 106 transitions, 277 flow [2022-07-22 21:42:28,653 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=277, PETRI_PLACES=119, PETRI_TRANSITIONS=106} [2022-07-22 21:42:28,656 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, 14 predicate places. [2022-07-22 21:42:28,656 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 106 transitions, 277 flow [2022-07-22 21:42:28,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,657 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:28,657 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] [2022-07-22 21:42:28,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:42:28,658 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:28,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:28,659 INFO L85 PathProgramCache]: Analyzing trace with hash -981991561, now seen corresponding path program 1 times [2022-07-22 21:42:28,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:28,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891562398] [2022-07-22 21:42:28,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:28,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:28,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:28,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891562398] [2022-07-22 21:42:28,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891562398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:28,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:28,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:28,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875541799] [2022-07-22 21:42:28,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:28,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:28,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:28,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:28,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:28,895 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 116 [2022-07-22 21:42:28,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 106 transitions, 277 flow. Second operand has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:28,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 116 [2022-07-22 21:42:28,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:29,260 INFO L129 PetriNetUnfolder]: 393/1811 cut-off events. [2022-07-22 21:42:29,261 INFO L130 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2022-07-22 21:42:29,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2897 conditions, 1811 events. 393/1811 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 15570 event pairs, 106 based on Foata normal form. 0/1490 useless extension candidates. Maximal degree in co-relation 2865. Up to 156 conditions per place. [2022-07-22 21:42:29,271 INFO L132 encePairwiseOnDemand]: 102/116 looper letters, 44 selfloop transitions, 14 changer transitions 40/174 dead transitions. [2022-07-22 21:42:29,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 174 transitions, 616 flow [2022-07-22 21:42:29,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:42:29,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:42:29,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 723 transitions. [2022-07-22 21:42:29,274 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8903940886699507 [2022-07-22 21:42:29,275 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 723 transitions. [2022-07-22 21:42:29,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 723 transitions. [2022-07-22 21:42:29,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:29,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 723 transitions. [2022-07-22 21:42:29,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.28571428571429) internal successors, (723), 7 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:29,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:29,284 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:29,284 INFO L186 Difference]: Start difference. First operand has 119 places, 106 transitions, 277 flow. Second operand 7 states and 723 transitions. [2022-07-22 21:42:29,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 174 transitions, 616 flow [2022-07-22 21:42:29,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 174 transitions, 609 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-07-22 21:42:29,297 INFO L242 Difference]: Finished difference. Result has 126 places, 109 transitions, 338 flow [2022-07-22 21:42:29,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=338, PETRI_PLACES=126, PETRI_TRANSITIONS=109} [2022-07-22 21:42:29,299 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, 21 predicate places. [2022-07-22 21:42:29,299 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 109 transitions, 338 flow [2022-07-22 21:42:29,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:29,305 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:29,306 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] [2022-07-22 21:42:29,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:42:29,306 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:29,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:29,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1354129589, now seen corresponding path program 2 times [2022-07-22 21:42:29,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:29,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53968454] [2022-07-22 21:42:29,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:29,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:29,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:29,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:29,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53968454] [2022-07-22 21:42:29,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53968454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:29,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:29,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:42:29,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322472197] [2022-07-22 21:42:29,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:29,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:42:29,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:29,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:42:29,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:42:29,431 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 116 [2022-07-22 21:42:29,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 109 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:29,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:29,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 116 [2022-07-22 21:42:29,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:29,692 INFO L129 PetriNetUnfolder]: 249/1432 cut-off events. [2022-07-22 21:42:29,692 INFO L130 PetriNetUnfolder]: For 639/639 co-relation queries the response was YES. [2022-07-22 21:42:29,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 1432 events. 249/1432 cut-off events. For 639/639 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 12002 event pairs, 48 based on Foata normal form. 20/1402 useless extension candidates. Maximal degree in co-relation 2603. Up to 218 conditions per place. [2022-07-22 21:42:29,702 INFO L132 encePairwiseOnDemand]: 107/116 looper letters, 58 selfloop transitions, 8 changer transitions 2/144 dead transitions. [2022-07-22 21:42:29,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 144 transitions, 635 flow [2022-07-22 21:42:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:42:29,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:42:29,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 508 transitions. [2022-07-22 21:42:29,705 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8758620689655172 [2022-07-22 21:42:29,705 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 508 transitions. [2022-07-22 21:42:29,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 508 transitions. [2022-07-22 21:42:29,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:29,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 508 transitions. [2022-07-22 21:42:29,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:29,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:29,710 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:29,710 INFO L186 Difference]: Start difference. First operand has 126 places, 109 transitions, 338 flow. Second operand 5 states and 508 transitions. [2022-07-22 21:42:29,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 144 transitions, 635 flow [2022-07-22 21:42:29,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 144 transitions, 609 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-07-22 21:42:29,719 INFO L242 Difference]: Finished difference. Result has 118 places, 114 transitions, 391 flow [2022-07-22 21:42:29,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=118, PETRI_TRANSITIONS=114} [2022-07-22 21:42:29,722 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, 13 predicate places. [2022-07-22 21:42:29,722 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 114 transitions, 391 flow [2022-07-22 21:42:29,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:29,723 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:29,723 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] [2022-07-22 21:42:29,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:42:29,724 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:29,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:29,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1206626787, now seen corresponding path program 3 times [2022-07-22 21:42:29,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:29,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797302645] [2022-07-22 21:42:29,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:29,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:29,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:29,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:29,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797302645] [2022-07-22 21:42:29,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797302645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:29,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:29,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:42:29,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29787396] [2022-07-22 21:42:29,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:29,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:42:29,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:29,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:42:29,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:42:29,864 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 116 [2022-07-22 21:42:29,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:29,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:29,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 116 [2022-07-22 21:42:29,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:30,077 INFO L129 PetriNetUnfolder]: 219/1595 cut-off events. [2022-07-22 21:42:30,078 INFO L130 PetriNetUnfolder]: For 1024/1024 co-relation queries the response was YES. [2022-07-22 21:42:30,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3048 conditions, 1595 events. 219/1595 cut-off events. For 1024/1024 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 14398 event pairs, 90 based on Foata normal form. 25/1563 useless extension candidates. Maximal degree in co-relation 2320. Up to 180 conditions per place. [2022-07-22 21:42:30,087 INFO L132 encePairwiseOnDemand]: 106/116 looper letters, 39 selfloop transitions, 6 changer transitions 39/159 dead transitions. [2022-07-22 21:42:30,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 159 transitions, 814 flow [2022-07-22 21:42:30,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:42:30,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:42:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 423 transitions. [2022-07-22 21:42:30,089 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9116379310344828 [2022-07-22 21:42:30,089 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 423 transitions. [2022-07-22 21:42:30,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 423 transitions. [2022-07-22 21:42:30,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:30,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 423 transitions. [2022-07-22 21:42:30,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,092 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,092 INFO L186 Difference]: Start difference. First operand has 118 places, 114 transitions, 391 flow. Second operand 4 states and 423 transitions. [2022-07-22 21:42:30,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 159 transitions, 814 flow [2022-07-22 21:42:30,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 159 transitions, 799 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:30,099 INFO L242 Difference]: Finished difference. Result has 122 places, 107 transitions, 388 flow [2022-07-22 21:42:30,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=388, PETRI_PLACES=122, PETRI_TRANSITIONS=107} [2022-07-22 21:42:30,102 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, 17 predicate places. [2022-07-22 21:42:30,102 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 107 transitions, 388 flow [2022-07-22 21:42:30,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,102 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:30,102 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] [2022-07-22 21:42:30,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:42:30,103 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:30,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:30,103 INFO L85 PathProgramCache]: Analyzing trace with hash -818535189, now seen corresponding path program 1 times [2022-07-22 21:42:30,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:30,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272585482] [2022-07-22 21:42:30,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:30,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:30,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:30,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:30,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272585482] [2022-07-22 21:42:30,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272585482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:30,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:30,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:42:30,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11741152] [2022-07-22 21:42:30,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:30,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:42:30,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:30,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:42:30,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:42:30,244 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 116 [2022-07-22 21:42:30,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 107 transitions, 388 flow. Second operand has 8 states, 8 states have (on average 93.5) internal successors, (748), 8 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:30,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 116 [2022-07-22 21:42:30,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:30,533 INFO L129 PetriNetUnfolder]: 453/1858 cut-off events. [2022-07-22 21:42:30,534 INFO L130 PetriNetUnfolder]: For 578/614 co-relation queries the response was YES. [2022-07-22 21:42:30,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3371 conditions, 1858 events. 453/1858 cut-off events. For 578/614 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 17053 event pairs, 264 based on Foata normal form. 3/1753 useless extension candidates. Maximal degree in co-relation 2902. Up to 573 conditions per place. [2022-07-22 21:42:30,545 INFO L132 encePairwiseOnDemand]: 106/116 looper letters, 29 selfloop transitions, 7 changer transitions 15/137 dead transitions. [2022-07-22 21:42:30,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 137 transitions, 575 flow [2022-07-22 21:42:30,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:42:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:42:30,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 962 transitions. [2022-07-22 21:42:30,548 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8293103448275863 [2022-07-22 21:42:30,548 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 962 transitions. [2022-07-22 21:42:30,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 962 transitions. [2022-07-22 21:42:30,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:30,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 962 transitions. [2022-07-22 21:42:30,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 96.2) internal successors, (962), 10 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 116.0) internal successors, (1276), 11 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,555 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 116.0) internal successors, (1276), 11 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,555 INFO L186 Difference]: Start difference. First operand has 122 places, 107 transitions, 388 flow. Second operand 10 states and 962 transitions. [2022-07-22 21:42:30,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 137 transitions, 575 flow [2022-07-22 21:42:30,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 137 transitions, 546 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-22 21:42:30,562 INFO L242 Difference]: Finished difference. Result has 129 places, 111 transitions, 416 flow [2022-07-22 21:42:30,562 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=416, PETRI_PLACES=129, PETRI_TRANSITIONS=111} [2022-07-22 21:42:30,563 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, 24 predicate places. [2022-07-22 21:42:30,563 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 111 transitions, 416 flow [2022-07-22 21:42:30,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 93.5) internal successors, (748), 8 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,564 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:30,564 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] [2022-07-22 21:42:30,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:42:30,564 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:30,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:30,565 INFO L85 PathProgramCache]: Analyzing trace with hash 916383589, now seen corresponding path program 4 times [2022-07-22 21:42:30,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:30,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5039635] [2022-07-22 21:42:30,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:30,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:30,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:30,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:30,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5039635] [2022-07-22 21:42:30,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5039635] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:30,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:30,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:30,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488143048] [2022-07-22 21:42:30,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:30,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:30,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:30,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:30,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:30,670 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 116 [2022-07-22 21:42:30,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 111 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:30,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 116 [2022-07-22 21:42:30,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:30,860 INFO L129 PetriNetUnfolder]: 172/1252 cut-off events. [2022-07-22 21:42:30,861 INFO L130 PetriNetUnfolder]: For 1192/1192 co-relation queries the response was YES. [2022-07-22 21:42:30,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2541 conditions, 1252 events. 172/1252 cut-off events. For 1192/1192 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10192 event pairs, 50 based on Foata normal form. 8/1219 useless extension candidates. Maximal degree in co-relation 2490. Up to 123 conditions per place. [2022-07-22 21:42:30,870 INFO L132 encePairwiseOnDemand]: 104/116 looper letters, 33 selfloop transitions, 14 changer transitions 29/148 dead transitions. [2022-07-22 21:42:30,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 148 transitions, 798 flow [2022-07-22 21:42:30,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:42:30,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:42:30,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2022-07-22 21:42:30,873 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8672413793103448 [2022-07-22 21:42:30,873 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 503 transitions. [2022-07-22 21:42:30,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 503 transitions. [2022-07-22 21:42:30,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:30,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 503 transitions. [2022-07-22 21:42:30,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,877 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,877 INFO L186 Difference]: Start difference. First operand has 129 places, 111 transitions, 416 flow. Second operand 5 states and 503 transitions. [2022-07-22 21:42:30,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 148 transitions, 798 flow [2022-07-22 21:42:30,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 148 transitions, 789 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-22 21:42:30,885 INFO L242 Difference]: Finished difference. Result has 131 places, 107 transitions, 476 flow [2022-07-22 21:42:30,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=131, PETRI_TRANSITIONS=107} [2022-07-22 21:42:30,887 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, 26 predicate places. [2022-07-22 21:42:30,887 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 107 transitions, 476 flow [2022-07-22 21:42:30,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,887 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:30,887 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] [2022-07-22 21:42:30,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:42:30,888 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:30,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:30,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1875815729, now seen corresponding path program 5 times [2022-07-22 21:42:30,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:30,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149873661] [2022-07-22 21:42:30,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:30,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:30,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:30,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149873661] [2022-07-22 21:42:30,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149873661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:30,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:30,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:30,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21416436] [2022-07-22 21:42:30,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:30,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:30,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:30,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:30,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:30,989 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 116 [2022-07-22 21:42:30,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 107 transitions, 476 flow. Second operand has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:30,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 116 [2022-07-22 21:42:30,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:31,168 INFO L129 PetriNetUnfolder]: 96/989 cut-off events. [2022-07-22 21:42:31,168 INFO L130 PetriNetUnfolder]: For 1439/1439 co-relation queries the response was YES. [2022-07-22 21:42:31,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2076 conditions, 989 events. 96/989 cut-off events. For 1439/1439 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7909 event pairs, 23 based on Foata normal form. 2/971 useless extension candidates. Maximal degree in co-relation 1993. Up to 125 conditions per place. [2022-07-22 21:42:31,176 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 44 selfloop transitions, 8 changer transitions 11/135 dead transitions. [2022-07-22 21:42:31,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 135 transitions, 831 flow [2022-07-22 21:42:31,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:42:31,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:42:31,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 674 transitions. [2022-07-22 21:42:31,179 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8300492610837439 [2022-07-22 21:42:31,179 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 674 transitions. [2022-07-22 21:42:31,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 674 transitions. [2022-07-22 21:42:31,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:31,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 674 transitions. [2022-07-22 21:42:31,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.28571428571429) internal successors, (674), 7 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,183 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,184 INFO L186 Difference]: Start difference. First operand has 131 places, 107 transitions, 476 flow. Second operand 7 states and 674 transitions. [2022-07-22 21:42:31,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 135 transitions, 831 flow [2022-07-22 21:42:31,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 135 transitions, 746 flow, removed 25 selfloop flow, removed 11 redundant places. [2022-07-22 21:42:31,193 INFO L242 Difference]: Finished difference. Result has 120 places, 108 transitions, 464 flow [2022-07-22 21:42:31,194 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=464, PETRI_PLACES=120, PETRI_TRANSITIONS=108} [2022-07-22 21:42:31,194 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, 15 predicate places. [2022-07-22 21:42:31,195 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 108 transitions, 464 flow [2022-07-22 21:42:31,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,195 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:31,195 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] [2022-07-22 21:42:31,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:42:31,196 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:31,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:31,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1224307535, now seen corresponding path program 6 times [2022-07-22 21:42:31,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:31,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398009219] [2022-07-22 21:42:31,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:31,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:31,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:31,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398009219] [2022-07-22 21:42:31,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398009219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:31,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:31,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:31,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941908494] [2022-07-22 21:42:31,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:31,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:31,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:31,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:31,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:31,314 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 116 [2022-07-22 21:42:31,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 108 transitions, 464 flow. Second operand has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:31,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 116 [2022-07-22 21:42:31,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:31,471 INFO L129 PetriNetUnfolder]: 118/1170 cut-off events. [2022-07-22 21:42:31,471 INFO L130 PetriNetUnfolder]: For 1854/1854 co-relation queries the response was YES. [2022-07-22 21:42:31,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2362 conditions, 1170 events. 118/1170 cut-off events. For 1854/1854 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 9841 event pairs, 14 based on Foata normal form. 8/1159 useless extension candidates. Maximal degree in co-relation 1853. Up to 144 conditions per place. [2022-07-22 21:42:31,479 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 44 selfloop transitions, 16 changer transitions 13/145 dead transitions. [2022-07-22 21:42:31,479 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 145 transitions, 922 flow [2022-07-22 21:42:31,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:42:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:42:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 496 transitions. [2022-07-22 21:42:31,481 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8551724137931035 [2022-07-22 21:42:31,482 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 496 transitions. [2022-07-22 21:42:31,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 496 transitions. [2022-07-22 21:42:31,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:31,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 496 transitions. [2022-07-22 21:42:31,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,485 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,485 INFO L186 Difference]: Start difference. First operand has 120 places, 108 transitions, 464 flow. Second operand 5 states and 496 transitions. [2022-07-22 21:42:31,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 145 transitions, 922 flow [2022-07-22 21:42:31,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 145 transitions, 880 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-07-22 21:42:31,491 INFO L242 Difference]: Finished difference. Result has 120 places, 117 transitions, 614 flow [2022-07-22 21:42:31,492 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=614, PETRI_PLACES=120, PETRI_TRANSITIONS=117} [2022-07-22 21:42:31,493 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, 15 predicate places. [2022-07-22 21:42:31,493 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 117 transitions, 614 flow [2022-07-22 21:42:31,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,494 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:31,494 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] [2022-07-22 21:42:31,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:42:31,494 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:31,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:31,495 INFO L85 PathProgramCache]: Analyzing trace with hash 913771647, now seen corresponding path program 7 times [2022-07-22 21:42:31,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:31,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771120137] [2022-07-22 21:42:31,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:31,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:31,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:31,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771120137] [2022-07-22 21:42:31,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771120137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:31,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:31,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:31,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740605331] [2022-07-22 21:42:31,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:31,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:31,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:31,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:31,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:31,565 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 116 [2022-07-22 21:42:31,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 117 transitions, 614 flow. Second operand has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:31,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 116 [2022-07-22 21:42:31,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:31,676 INFO L129 PetriNetUnfolder]: 75/710 cut-off events. [2022-07-22 21:42:31,676 INFO L130 PetriNetUnfolder]: For 1357/1357 co-relation queries the response was YES. [2022-07-22 21:42:31,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1589 conditions, 710 events. 75/710 cut-off events. For 1357/1357 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5082 event pairs, 10 based on Foata normal form. 16/707 useless extension candidates. Maximal degree in co-relation 941. Up to 94 conditions per place. [2022-07-22 21:42:31,681 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 26 selfloop transitions, 10 changer transitions 26/135 dead transitions. [2022-07-22 21:42:31,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 135 transitions, 893 flow [2022-07-22 21:42:31,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:42:31,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:42:31,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 404 transitions. [2022-07-22 21:42:31,683 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8706896551724138 [2022-07-22 21:42:31,683 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 404 transitions. [2022-07-22 21:42:31,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 404 transitions. [2022-07-22 21:42:31,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:31,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 404 transitions. [2022-07-22 21:42:31,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,687 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,687 INFO L186 Difference]: Start difference. First operand has 120 places, 117 transitions, 614 flow. Second operand 4 states and 404 transitions. [2022-07-22 21:42:31,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 135 transitions, 893 flow [2022-07-22 21:42:31,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 135 transitions, 872 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-07-22 21:42:31,693 INFO L242 Difference]: Finished difference. Result has 122 places, 102 transitions, 448 flow [2022-07-22 21:42:31,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=448, PETRI_PLACES=122, PETRI_TRANSITIONS=102} [2022-07-22 21:42:31,694 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, 17 predicate places. [2022-07-22 21:42:31,694 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 102 transitions, 448 flow [2022-07-22 21:42:31,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,694 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:31,695 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] [2022-07-22 21:42:31,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:42:31,695 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:31,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:31,696 INFO L85 PathProgramCache]: Analyzing trace with hash 827541705, now seen corresponding path program 8 times [2022-07-22 21:42:31,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:31,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877666549] [2022-07-22 21:42:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:31,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:31,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:31,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877666549] [2022-07-22 21:42:31,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877666549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:31,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:31,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:31,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252006749] [2022-07-22 21:42:31,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:31,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:31,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:31,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:31,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:31,794 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 116 [2022-07-22 21:42:31,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 102 transitions, 448 flow. Second operand has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:31,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 116 [2022-07-22 21:42:31,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:31,905 INFO L129 PetriNetUnfolder]: 20/395 cut-off events. [2022-07-22 21:42:31,905 INFO L130 PetriNetUnfolder]: For 1081/1081 co-relation queries the response was YES. [2022-07-22 21:42:31,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 395 events. 20/395 cut-off events. For 1081/1081 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2644 event pairs, 3 based on Foata normal form. 23/413 useless extension candidates. Maximal degree in co-relation 485. Up to 32 conditions per place. [2022-07-22 21:42:31,907 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 0 selfloop transitions, 0 changer transitions 105/105 dead transitions. [2022-07-22 21:42:31,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 105 transitions, 593 flow [2022-07-22 21:42:31,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:42:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:42:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 581 transitions. [2022-07-22 21:42:31,909 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8347701149425287 [2022-07-22 21:42:31,909 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 581 transitions. [2022-07-22 21:42:31,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 581 transitions. [2022-07-22 21:42:31,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:31,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 581 transitions. [2022-07-22 21:42:31,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.83333333333333) internal successors, (581), 6 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,913 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,913 INFO L186 Difference]: Start difference. First operand has 122 places, 102 transitions, 448 flow. Second operand 6 states and 581 transitions. [2022-07-22 21:42:31,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 105 transitions, 593 flow [2022-07-22 21:42:31,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 105 transitions, 540 flow, removed 16 selfloop flow, removed 4 redundant places. [2022-07-22 21:42:31,916 INFO L242 Difference]: Finished difference. Result has 106 places, 0 transitions, 0 flow [2022-07-22 21:42:31,916 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=106, PETRI_TRANSITIONS=0} [2022-07-22 21:42:31,917 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, 1 predicate places. [2022-07-22 21:42:31,917 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 0 transitions, 0 flow [2022-07-22 21:42:31,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:31,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-22 21:42:31,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-22 21:42:31,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-22 21:42:31,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-22 21:42:31,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:42:31,921 INFO L356 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1, 1] [2022-07-22 21:42:31,923 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-22 21:42:31,923 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:42:31,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:42:31 BasicIcfg [2022-07-22 21:42:31,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:42:31,928 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:42:31,928 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:42:31,928 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:42:31,928 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:42:27" (3/4) ... [2022-07-22 21:42:31,930 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 21:42:31,935 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-22 21:42:31,936 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-22 21:42:31,936 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-07-22 21:42:31,939 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-07-22 21:42:31,939 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-22 21:42:31,940 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 21:42:31,940 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 21:42:31,970 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 21:42:31,971 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:42:31,971 INFO L158 Benchmark]: Toolchain (without parser) took 5718.82ms. Allocated memory was 94.4MB in the beginning and 213.9MB in the end (delta: 119.5MB). Free memory was 62.9MB in the beginning and 128.6MB in the end (delta: -65.7MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB. [2022-07-22 21:42:31,972 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 77.6MB. Free memory was 47.4MB in the beginning and 47.4MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:42:31,972 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.33ms. Allocated memory is still 94.4MB. Free memory was 62.6MB in the beginning and 70.5MB in the end (delta: -7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 21:42:31,972 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.41ms. Allocated memory is still 94.4MB. Free memory was 70.5MB in the beginning and 68.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:42:31,972 INFO L158 Benchmark]: Boogie Preprocessor took 42.24ms. Allocated memory is still 94.4MB. Free memory was 68.9MB in the beginning and 67.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:42:31,973 INFO L158 Benchmark]: RCFGBuilder took 375.10ms. Allocated memory is still 94.4MB. Free memory was 67.4MB in the beginning and 54.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 21:42:31,973 INFO L158 Benchmark]: TraceAbstraction took 4880.02ms. Allocated memory was 94.4MB in the beginning and 213.9MB in the end (delta: 119.5MB). Free memory was 54.3MB in the beginning and 130.7MB in the end (delta: -76.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-07-22 21:42:31,973 INFO L158 Benchmark]: Witness Printer took 43.21ms. Allocated memory is still 213.9MB. Free memory was 130.7MB in the beginning and 128.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:42:31,975 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 77.6MB. Free memory was 47.4MB in the beginning and 47.4MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.33ms. Allocated memory is still 94.4MB. Free memory was 62.6MB in the beginning and 70.5MB in the end (delta: -7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.41ms. Allocated memory is still 94.4MB. Free memory was 70.5MB in the beginning and 68.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.24ms. Allocated memory is still 94.4MB. Free memory was 68.9MB in the beginning and 67.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 375.10ms. Allocated memory is still 94.4MB. Free memory was 67.4MB in the beginning and 54.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4880.02ms. Allocated memory was 94.4MB in the beginning and 213.9MB in the end (delta: 119.5MB). Free memory was 54.3MB in the beginning and 130.7MB in the end (delta: -76.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Witness Printer took 43.21ms. Allocated memory is still 213.9MB. Free memory was 130.7MB in the beginning and 128.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 76]: 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 7 procedures, 149 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.7s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 321 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 321 mSDsluCounter, 473 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 550 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 911 IncrementalHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 207 mSDtfsCounter, 911 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=614occurred in iteration=10, InterpolantAutomatonStates: 76, 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: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1026 NumberOfCodeBlocks, 1026 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1014 ConstructedInterpolants, 0 QuantifiedInterpolants, 3080 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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! [2022-07-22 21:42:32,021 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