./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/unroll-cond-5.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 b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 22:03:28,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 22:03:28,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 22:03:28,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 22:03:28,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 22:03:28,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 22:03:28,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 22:03:28,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 22:03:28,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 22:03:28,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 22:03:28,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 22:03:28,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 22:03:28,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 22:03:28,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 22:03:28,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 22:03:28,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 22:03:28,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 22:03:28,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 22:03:28,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 22:03:28,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 22:03:28,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 22:03:28,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 22:03:28,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 22:03:28,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 22:03:28,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 22:03:28,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 22:03:28,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 22:03:28,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 22:03:28,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 22:03:28,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 22:03:28,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 22:03:28,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 22:03:28,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 22:03:28,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 22:03:28,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 22:03:28,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 22:03:28,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 22:03:28,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 22:03:28,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 22:03:28,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 22:03:28,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 22:03:28,393 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 22:03:28,426 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 22:03:28,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 22:03:28,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 22:03:28,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 22:03:28,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 22:03:28,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 22:03:28,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 22:03:28,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 22:03:28,430 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 22:03:28,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 22:03:28,431 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 22:03:28,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 22:03:28,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 22:03:28,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 22:03:28,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 22:03:28,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 22:03:28,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 22:03:28,432 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 22:03:28,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 22:03:28,433 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 22:03:28,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 22:03:28,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 22:03:28,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 22:03:28,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 22:03:28,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:03:28,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 22:03:28,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 22:03:28,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 22:03:28,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 22:03:28,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 22:03:28,435 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 22:03:28,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 22:03:28,436 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 22:03:28,436 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 22:03:28,436 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 22:03:28,437 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 22:03:28,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 22:03:28,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 22:03:28,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 22:03:28,788 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 22:03:28,789 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 22:03:28,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2023-08-30 22:03:29,940 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 22:03:30,161 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 22:03:30,161 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2023-08-30 22:03:30,176 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b98e6994/01674547bee44782b1f1470eedcd077a/FLAGc95527395 [2023-08-30 22:03:30,198 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b98e6994/01674547bee44782b1f1470eedcd077a [2023-08-30 22:03:30,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 22:03:30,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 22:03:30,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 22:03:30,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 22:03:30,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 22:03:30,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:03:30" (1/1) ... [2023-08-30 22:03:30,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb90084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:03:30, skipping insertion in model container [2023-08-30 22:03:30,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:03:30" (1/1) ... [2023-08-30 22:03:30,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 22:03:30,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 22:03:30,409 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c[2975,2988] [2023-08-30 22:03:30,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:03:30,425 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 22:03:30,448 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c[2975,2988] [2023-08-30 22:03:30,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:03:30,472 INFO L208 MainTranslator]: Completed translation [2023-08-30 22:03:30,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:03:30 WrapperNode [2023-08-30 22:03:30,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 22:03:30,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 22:03:30,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 22:03:30,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 22:03:30,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:03:30" (1/1) ... [2023-08-30 22:03:30,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:03:30" (1/1) ... [2023-08-30 22:03:30,509 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 207 [2023-08-30 22:03:30,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 22:03:30,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 22:03:30,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 22:03:30,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 22:03:30,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:03:30" (1/1) ... [2023-08-30 22:03:30,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:03:30" (1/1) ... [2023-08-30 22:03:30,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:03:30" (1/1) ... [2023-08-30 22:03:30,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:03:30" (1/1) ... [2023-08-30 22:03:30,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:03:30" (1/1) ... [2023-08-30 22:03:30,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:03:30" (1/1) ... [2023-08-30 22:03:30,550 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:03:30" (1/1) ... [2023-08-30 22:03:30,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:03:30" (1/1) ... [2023-08-30 22:03:30,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 22:03:30,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 22:03:30,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 22:03:30,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 22:03:30,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:03:30" (1/1) ... [2023-08-30 22:03:30,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:03:30,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:03:30,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 22:03:30,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 22:03:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 22:03:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 22:03:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 22:03:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 22:03:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 22:03:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 22:03:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 22:03:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 22:03:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 22:03:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 22:03:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 22:03:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 22:03:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 22:03:30,635 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 22:03:30,742 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 22:03:30,744 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 22:03:31,180 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 22:03:31,189 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 22:03:31,189 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 22:03:31,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:03:31 BoogieIcfgContainer [2023-08-30 22:03:31,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 22:03:31,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 22:03:31,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 22:03:31,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 22:03:31,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:03:30" (1/3) ... [2023-08-30 22:03:31,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116b6ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:03:31, skipping insertion in model container [2023-08-30 22:03:31,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:03:30" (2/3) ... [2023-08-30 22:03:31,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116b6ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:03:31, skipping insertion in model container [2023-08-30 22:03:31,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:03:31" (3/3) ... [2023-08-30 22:03:31,199 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2023-08-30 22:03:31,206 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 22:03:31,214 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 22:03:31,214 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 22:03:31,215 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 22:03:31,300 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 22:03:31,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 250 transitions, 516 flow [2023-08-30 22:03:31,482 INFO L130 PetriNetUnfolder]: 24/248 cut-off events. [2023-08-30 22:03:31,483 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 22:03:31,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 248 events. 24/248 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 480 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2023-08-30 22:03:31,491 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 250 transitions, 516 flow [2023-08-30 22:03:31,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 240 transitions, 492 flow [2023-08-30 22:03:31,503 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 22:03:31,518 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 240 transitions, 492 flow [2023-08-30 22:03:31,524 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 240 transitions, 492 flow [2023-08-30 22:03:31,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 240 transitions, 492 flow [2023-08-30 22:03:31,579 INFO L130 PetriNetUnfolder]: 24/240 cut-off events. [2023-08-30 22:03:31,580 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 22:03:31,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 240 events. 24/240 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 460 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2023-08-30 22:03:31,590 INFO L119 LiptonReduction]: Number of co-enabled transitions 6892 [2023-08-30 22:03:54,059 WARN L222 SmtUtils]: Spent 11.20s on a formula simplification. DAG size of input: 203 DAG size of output: 201 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 22:03:59,556 WARN L222 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 22:03:59,559 INFO L134 LiptonReduction]: Checked pairs total: 6654 [2023-08-30 22:03:59,559 INFO L136 LiptonReduction]: Total number of compositions: 300 [2023-08-30 22:03:59,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 22:03:59,576 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2cf1d5c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 22:03:59,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-30 22:03:59,583 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-08-30 22:03:59,584 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 22:03:59,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:03:59,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:03:59,585 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:03:59,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:03:59,590 INFO L85 PathProgramCache]: Analyzing trace with hash 678661713, now seen corresponding path program 1 times [2023-08-30 22:03:59,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:03:59,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52364766] [2023-08-30 22:03:59,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:03:59,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:03:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:04:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:04:00,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:04:00,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52364766] [2023-08-30 22:04:00,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52364766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:04:00,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:04:00,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 22:04:00,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468133126] [2023-08-30 22:04:00,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:04:00,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 22:04:00,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:04:00,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 22:04:00,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 22:04:00,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 550 [2023-08-30 22:04:00,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:00,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:04:00,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 550 [2023-08-30 22:04:00,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:04:00,168 INFO L130 PetriNetUnfolder]: 45/80 cut-off events. [2023-08-30 22:04:00,168 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 22:04:00,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 80 events. 45/80 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 189 event pairs, 18 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 120. Up to 76 conditions per place. [2023-08-30 22:04:00,170 INFO L137 encePairwiseOnDemand]: 547/550 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-08-30 22:04:00,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2023-08-30 22:04:00,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 22:04:00,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 22:04:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2023-08-30 22:04:00,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41393939393939394 [2023-08-30 22:04:00,186 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2023-08-30 22:04:00,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2023-08-30 22:04:00,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:04:00,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2023-08-30 22:04:00,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:00,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:00,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:00,205 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 683 transitions. [2023-08-30 22:04:00,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 80 flow [2023-08-30 22:04:00,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 22:04:00,209 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2023-08-30 22:04:00,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-08-30 22:04:00,214 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-08-30 22:04:00,214 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2023-08-30 22:04:00,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:00,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:04:00,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:04:00,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 22:04:00,216 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:04:00,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:04:00,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1026241164, now seen corresponding path program 1 times [2023-08-30 22:04:00,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:04:00,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212737300] [2023-08-30 22:04:00,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:04:00,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:04:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:04:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:04:00,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:04:00,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212737300] [2023-08-30 22:04:00,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212737300] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:04:00,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:04:00,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 22:04:00,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014695717] [2023-08-30 22:04:00,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:04:00,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 22:04:00,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:04:00,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 22:04:00,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 22:04:00,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 550 [2023-08-30 22:04:00,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:00,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:04:00,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 550 [2023-08-30 22:04:00,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:04:01,024 INFO L130 PetriNetUnfolder]: 72/135 cut-off events. [2023-08-30 22:04:01,026 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 22:04:01,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 135 events. 72/135 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 368 event pairs, 24 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 274. Up to 77 conditions per place. [2023-08-30 22:04:01,027 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 35 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-30 22:04:01,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 40 transitions, 179 flow [2023-08-30 22:04:01,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 22:04:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 22:04:01,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1085 transitions. [2023-08-30 22:04:01,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39454545454545453 [2023-08-30 22:04:01,033 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1085 transitions. [2023-08-30 22:04:01,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1085 transitions. [2023-08-30 22:04:01,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:04:01,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1085 transitions. [2023-08-30 22:04:01,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:01,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:01,044 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:01,044 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 5 states and 1085 transitions. [2023-08-30 22:04:01,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 40 transitions, 179 flow [2023-08-30 22:04:01,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 40 transitions, 175 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 22:04:01,046 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 82 flow [2023-08-30 22:04:01,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-08-30 22:04:01,047 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2023-08-30 22:04:01,047 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 82 flow [2023-08-30 22:04:01,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:01,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:04:01,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:04:01,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 22:04:01,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:04:01,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:04:01,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1210956036, now seen corresponding path program 2 times [2023-08-30 22:04:01,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:04:01,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378730777] [2023-08-30 22:04:01,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:04:01,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:04:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:04:01,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:04:01,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:04:01,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378730777] [2023-08-30 22:04:01,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378730777] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:04:01,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:04:01,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 22:04:01,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861427463] [2023-08-30 22:04:01,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:04:01,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 22:04:01,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:04:01,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 22:04:01,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 22:04:01,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 550 [2023-08-30 22:04:01,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:01,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:04:01,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 550 [2023-08-30 22:04:01,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:04:01,539 INFO L130 PetriNetUnfolder]: 111/208 cut-off events. [2023-08-30 22:04:01,539 INFO L131 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2023-08-30 22:04:01,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 208 events. 111/208 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 647 event pairs, 42 based on Foata normal form. 2/169 useless extension candidates. Maximal degree in co-relation 584. Up to 133 conditions per place. [2023-08-30 22:04:01,541 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 37 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2023-08-30 22:04:01,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 44 transitions, 252 flow [2023-08-30 22:04:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 22:04:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 22:04:01,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1096 transitions. [2023-08-30 22:04:01,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39854545454545454 [2023-08-30 22:04:01,545 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1096 transitions. [2023-08-30 22:04:01,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1096 transitions. [2023-08-30 22:04:01,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:04:01,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1096 transitions. [2023-08-30 22:04:01,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 219.2) internal successors, (1096), 5 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:01,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:01,554 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:01,554 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 82 flow. Second operand 5 states and 1096 transitions. [2023-08-30 22:04:01,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 44 transitions, 252 flow [2023-08-30 22:04:01,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 235 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-30 22:04:01,557 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 124 flow [2023-08-30 22:04:01,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-30 22:04:01,558 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 11 predicate places. [2023-08-30 22:04:01,558 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 124 flow [2023-08-30 22:04:01,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:01,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:04:01,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:04:01,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 22:04:01,560 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:04:01,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:04:01,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1449066184, now seen corresponding path program 3 times [2023-08-30 22:04:01,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:04:01,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385711527] [2023-08-30 22:04:01,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:04:01,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:04:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:04:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:04:01,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:04:01,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385711527] [2023-08-30 22:04:01,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385711527] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:04:01,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:04:01,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 22:04:01,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048562118] [2023-08-30 22:04:01,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:04:01,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 22:04:01,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:04:01,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 22:04:01,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 22:04:01,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 550 [2023-08-30 22:04:01,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:01,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:04:01,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 550 [2023-08-30 22:04:01,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:04:02,062 INFO L130 PetriNetUnfolder]: 121/224 cut-off events. [2023-08-30 22:04:02,062 INFO L131 PetriNetUnfolder]: For 303/303 co-relation queries the response was YES. [2023-08-30 22:04:02,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 224 events. 121/224 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 734 event pairs, 44 based on Foata normal form. 4/201 useless extension candidates. Maximal degree in co-relation 764. Up to 121 conditions per place. [2023-08-30 22:04:02,064 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 37 selfloop transitions, 12 changer transitions 0/49 dead transitions. [2023-08-30 22:04:02,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 321 flow [2023-08-30 22:04:02,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 22:04:02,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 22:04:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1081 transitions. [2023-08-30 22:04:02,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3930909090909091 [2023-08-30 22:04:02,068 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1081 transitions. [2023-08-30 22:04:02,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1081 transitions. [2023-08-30 22:04:02,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:04:02,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1081 transitions. [2023-08-30 22:04:02,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 216.2) internal successors, (1081), 5 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:02,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:02,076 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:02,077 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 124 flow. Second operand 5 states and 1081 transitions. [2023-08-30 22:04:02,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 321 flow [2023-08-30 22:04:02,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 49 transitions, 297 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-30 22:04:02,097 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 203 flow [2023-08-30 22:04:02,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-08-30 22:04:02,098 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 17 predicate places. [2023-08-30 22:04:02,098 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 203 flow [2023-08-30 22:04:02,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:02,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:04:02,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:04:02,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 22:04:02,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:04:02,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:04:02,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2041421108, now seen corresponding path program 4 times [2023-08-30 22:04:02,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:04:02,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365108141] [2023-08-30 22:04:02,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:04:02,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:04:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:04:02,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:04:02,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:04:02,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365108141] [2023-08-30 22:04:02,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365108141] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:04:02,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:04:02,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 22:04:02,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324707303] [2023-08-30 22:04:02,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:04:02,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 22:04:02,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:04:02,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 22:04:02,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 22:04:02,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 550 [2023-08-30 22:04:02,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:02,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:04:02,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 550 [2023-08-30 22:04:02,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:04:02,529 INFO L130 PetriNetUnfolder]: 117/220 cut-off events. [2023-08-30 22:04:02,529 INFO L131 PetriNetUnfolder]: For 545/545 co-relation queries the response was YES. [2023-08-30 22:04:02,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 220 events. 117/220 cut-off events. For 545/545 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 704 event pairs, 50 based on Foata normal form. 4/197 useless extension candidates. Maximal degree in co-relation 824. Up to 177 conditions per place. [2023-08-30 22:04:02,531 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 32 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2023-08-30 22:04:02,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 375 flow [2023-08-30 22:04:02,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 22:04:02,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 22:04:02,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1075 transitions. [2023-08-30 22:04:02,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2023-08-30 22:04:02,535 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1075 transitions. [2023-08-30 22:04:02,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1075 transitions. [2023-08-30 22:04:02,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:04:02,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1075 transitions. [2023-08-30 22:04:02,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:02,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:02,542 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:02,542 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 203 flow. Second operand 5 states and 1075 transitions. [2023-08-30 22:04:02,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 375 flow [2023-08-30 22:04:02,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 362 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 22:04:02,546 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 296 flow [2023-08-30 22:04:02,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-08-30 22:04:02,546 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 22 predicate places. [2023-08-30 22:04:02,547 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 296 flow [2023-08-30 22:04:02,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:02,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:04:02,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:04:02,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 22:04:02,548 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:04:02,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:04:02,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1949255900, now seen corresponding path program 5 times [2023-08-30 22:04:02,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:04:02,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742889697] [2023-08-30 22:04:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:04:02,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:04:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:04:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:04:02,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:04:02,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742889697] [2023-08-30 22:04:02,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742889697] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:04:02,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:04:02,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 22:04:02,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812302695] [2023-08-30 22:04:02,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:04:02,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 22:04:02,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:04:02,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 22:04:02,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 22:04:02,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 550 [2023-08-30 22:04:02,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:02,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:04:02,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 550 [2023-08-30 22:04:02,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:04:02,929 INFO L130 PetriNetUnfolder]: 118/223 cut-off events. [2023-08-30 22:04:02,929 INFO L131 PetriNetUnfolder]: For 638/638 co-relation queries the response was YES. [2023-08-30 22:04:02,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 223 events. 118/223 cut-off events. For 638/638 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 737 event pairs, 38 based on Foata normal form. 2/198 useless extension candidates. Maximal degree in co-relation 934. Up to 123 conditions per place. [2023-08-30 22:04:02,931 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 38 selfloop transitions, 14 changer transitions 0/52 dead transitions. [2023-08-30 22:04:02,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 442 flow [2023-08-30 22:04:02,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 22:04:02,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 22:04:02,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1094 transitions. [2023-08-30 22:04:02,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978181818181818 [2023-08-30 22:04:02,934 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1094 transitions. [2023-08-30 22:04:02,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1094 transitions. [2023-08-30 22:04:02,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:04:02,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1094 transitions. [2023-08-30 22:04:02,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.8) internal successors, (1094), 5 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:02,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:02,941 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:02,942 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 296 flow. Second operand 5 states and 1094 transitions. [2023-08-30 22:04:02,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 442 flow [2023-08-30 22:04:02,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 388 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-08-30 22:04:02,945 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 282 flow [2023-08-30 22:04:02,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-08-30 22:04:02,946 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2023-08-30 22:04:02,946 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 282 flow [2023-08-30 22:04:02,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:02,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:04:02,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:04:02,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 22:04:02,947 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:04:02,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:04:02,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1265068822, now seen corresponding path program 6 times [2023-08-30 22:04:02,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:04:02,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933340592] [2023-08-30 22:04:02,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:04:02,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:04:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:04:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:04:03,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:04:03,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933340592] [2023-08-30 22:04:03,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933340592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:04:03,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:04:03,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 22:04:03,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7969302] [2023-08-30 22:04:03,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:04:03,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 22:04:03,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:04:03,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 22:04:03,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 22:04:03,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 550 [2023-08-30 22:04:03,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:03,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:04:03,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 550 [2023-08-30 22:04:03,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:04:03,372 INFO L130 PetriNetUnfolder]: 117/216 cut-off events. [2023-08-30 22:04:03,372 INFO L131 PetriNetUnfolder]: For 674/674 co-relation queries the response was YES. [2023-08-30 22:04:03,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 216 events. 117/216 cut-off events. For 674/674 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 677 event pairs, 49 based on Foata normal form. 2/191 useless extension candidates. Maximal degree in co-relation 870. Up to 170 conditions per place. [2023-08-30 22:04:03,374 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 34 selfloop transitions, 15 changer transitions 0/49 dead transitions. [2023-08-30 22:04:03,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 414 flow [2023-08-30 22:04:03,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 22:04:03,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 22:04:03,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1090 transitions. [2023-08-30 22:04:03,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39636363636363636 [2023-08-30 22:04:03,378 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1090 transitions. [2023-08-30 22:04:03,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1090 transitions. [2023-08-30 22:04:03,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:04:03,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1090 transitions. [2023-08-30 22:04:03,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:03,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:03,386 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:03,386 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 282 flow. Second operand 5 states and 1090 transitions. [2023-08-30 22:04:03,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 414 flow [2023-08-30 22:04:03,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 380 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 22:04:03,389 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 294 flow [2023-08-30 22:04:03,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-08-30 22:04:03,390 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 27 predicate places. [2023-08-30 22:04:03,390 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 294 flow [2023-08-30 22:04:03,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:03,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:04:03,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:04:03,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 22:04:03,391 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:04:03,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:04:03,392 INFO L85 PathProgramCache]: Analyzing trace with hash -29277619, now seen corresponding path program 1 times [2023-08-30 22:04:03,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:04:03,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497599638] [2023-08-30 22:04:03,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:04:03,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:04:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:04:03,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:04:03,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:04:03,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497599638] [2023-08-30 22:04:03,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497599638] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:04:03,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937953818] [2023-08-30 22:04:03,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:04:03,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:04:03,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:04:03,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:04:03,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 22:04:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:04:03,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-30 22:04:03,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:04:05,246 INFO L321 Elim1Store]: treesize reduction 294, result has 7.8 percent of original size [2023-08-30 22:04:05,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 537 treesize of output 386 [2023-08-30 22:04:12,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:04:12,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:04:30,581 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 22:04:30,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 329 treesize of output 213 [2023-08-30 22:04:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:04:31,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937953818] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:04:31,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:04:31,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-08-30 22:04:31,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650765665] [2023-08-30 22:04:31,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:04:31,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 22:04:31,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:04:31,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 22:04:31,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-08-30 22:04:33,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 550 [2023-08-30 22:04:33,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 294 flow. Second operand has 16 states, 16 states have (on average 167.0) internal successors, (2672), 16 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:33,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:04:33,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 550 [2023-08-30 22:04:33,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:04:35,512 INFO L130 PetriNetUnfolder]: 297/530 cut-off events. [2023-08-30 22:04:35,512 INFO L131 PetriNetUnfolder]: For 1701/1701 co-relation queries the response was YES. [2023-08-30 22:04:35,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 530 events. 297/530 cut-off events. For 1701/1701 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2219 event pairs, 24 based on Foata normal form. 4/450 useless extension candidates. Maximal degree in co-relation 1447. Up to 189 conditions per place. [2023-08-30 22:04:35,516 INFO L137 encePairwiseOnDemand]: 540/550 looper letters, 63 selfloop transitions, 37 changer transitions 58/158 dead transitions. [2023-08-30 22:04:35,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 158 transitions, 1339 flow [2023-08-30 22:04:35,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 22:04:35,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 22:04:35,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3404 transitions. [2023-08-30 22:04:35,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3094545454545455 [2023-08-30 22:04:35,526 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3404 transitions. [2023-08-30 22:04:35,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3404 transitions. [2023-08-30 22:04:35,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:04:35,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3404 transitions. [2023-08-30 22:04:35,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 170.2) internal successors, (3404), 20 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:35,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 550.0) internal successors, (11550), 21 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:35,552 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 550.0) internal successors, (11550), 21 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:35,552 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 294 flow. Second operand 20 states and 3404 transitions. [2023-08-30 22:04:35,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 158 transitions, 1339 flow [2023-08-30 22:04:35,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 158 transitions, 1269 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 22:04:35,560 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 565 flow [2023-08-30 22:04:35,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=565, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-08-30 22:04:35,562 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 52 predicate places. [2023-08-30 22:04:35,563 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 565 flow [2023-08-30 22:04:35,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 167.0) internal successors, (2672), 16 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:04:35,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:04:35,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:04:35,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 22:04:35,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:04:35,774 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:04:35,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:04:35,774 INFO L85 PathProgramCache]: Analyzing trace with hash -418800640, now seen corresponding path program 1 times [2023-08-30 22:04:35,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:04:35,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506589009] [2023-08-30 22:04:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:04:35,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:04:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:04:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:04:36,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:04:36,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506589009] [2023-08-30 22:04:36,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506589009] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:04:36,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700973741] [2023-08-30 22:04:36,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:04:36,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:04:36,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:04:36,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:04:36,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 22:04:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:04:36,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-30 22:04:36,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:04:36,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 22:04:36,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 22:04:36,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 22:04:36,977 INFO L321 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2023-08-30 22:04:36,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 343 treesize of output 320 [2023-08-30 22:04:37,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:04:37,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:04:51,468 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 22:04:51,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 464 treesize of output 272 [2023-08-30 22:04:51,522 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 22:04:51,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 1536 treesize of output 1392 [2023-08-30 22:04:51,645 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 22:04:51,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 250 treesize of output 276 [2023-08-30 22:04:56,609 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 22:04:56,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 345 treesize of output 269 [2023-08-30 22:04:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:04:57,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700973741] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:04:57,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:04:57,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 22 [2023-08-30 22:04:57,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612693219] [2023-08-30 22:04:57,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:04:57,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 22:04:57,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:04:57,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 22:04:57,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=370, Unknown=3, NotChecked=0, Total=462 [2023-08-30 22:05:00,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 22:05:08,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 550 [2023-08-30 22:05:08,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 565 flow. Second operand has 22 states, 22 states have (on average 129.1818181818182) internal successors, (2842), 22 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:05:08,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:05:08,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 550 [2023-08-30 22:05:08,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:05:11,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 22:05:17,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 22:05:17,492 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse9 (select |c_#memory_int| c_~f~0.base)) (.cse15 (+ (* c_~x2~0 4) c_~f~0.offset))) (let ((.cse17 (select .cse9 .cse15))) (let ((.cse18 (select .cse9 (+ (* .cse17 4) c_~f~0.offset)))) (let ((.cse16 (select .cse9 (+ c_~f~0.offset (* 4 .cse18))))) (let ((.cse0 (< .cse17 0)) (.cse2 (< .cse16 0)) (.cse3 (< .cse18 0)) (.cse6 (<= c_~size~0 .cse18)) (.cse7 (<= c_~size~0 .cse16)) (.cse8 (<= c_~size~0 .cse17)) (.cse5 (select .cse9 (+ c_~f~0.offset (* .cse16 4)))) (.cse10 (+ (* c_~x1~0 4) c_~f~0.offset)) (.cse1 (<= c_~size~0 c_~x2~0)) (.cse4 (< c_~x2~0 0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 (= c_~x1~0 .cse5) .cse6 .cse7 .cse8 (< 0 (mod (+ 4294967292 c_~n~0) 4294967296))) (<= c_~x2~0 0) (<= c_~x1~0 0) (or .cse0 .cse1 (< 3 (mod |c_thread1Thread1of1ForFork1_~i~0#1| 4294967296)) .cse2 .cse3 .cse4 .cse6 .cse7 .cse8 (= (select .cse9 .cse10) .cse5)) (<= 0 c_~x1~0) (<= 0 c_~x2~0) (or .cse1 (forall ((v_ArrVal_167 (Array Int Int))) (let ((.cse14 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_167) c_~f~0.base))) (let ((.cse12 (select .cse14 .cse15))) (let ((.cse11 (select .cse14 (+ c_~f~0.offset (* .cse12 4))))) (let ((.cse13 (select .cse14 (+ (* .cse11 4) c_~f~0.offset)))) (or (< .cse11 0) (< .cse12 0) (< .cse13 0) (<= c_~size~0 .cse11) (<= c_~size~0 .cse13) (= (select .cse14 (+ (* .cse13 4) c_~f~0.offset)) (select .cse14 .cse10)) (<= c_~size~0 .cse12))))))) .cse4) (or (< (+ |c_ULTIMATE.start_create_fresh_int_array_~i~2#1| 1) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse1 .cse4 (and (< c_~size~0 (+ c_~x1~0 2)) (< c_~x1~0 1))))))))) is different from false [2023-08-30 22:05:26,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 22:05:39,008 WARN L222 SmtUtils]: Spent 12.28s on a formula simplification. DAG size of input: 82 DAG size of output: 79 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 22:05:44,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 22:05:56,902 WARN L222 SmtUtils]: Spent 12.21s on a formula simplification. DAG size of input: 79 DAG size of output: 74 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 22:05:59,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 22:06:02,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 22:06:04,206 INFO L130 PetriNetUnfolder]: 530/946 cut-off events. [2023-08-30 22:06:04,207 INFO L131 PetriNetUnfolder]: For 3386/3386 co-relation queries the response was YES. [2023-08-30 22:06:04,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4046 conditions, 946 events. 530/946 cut-off events. For 3386/3386 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4639 event pairs, 29 based on Foata normal form. 18/787 useless extension candidates. Maximal degree in co-relation 3984. Up to 329 conditions per place. [2023-08-30 22:06:04,213 INFO L137 encePairwiseOnDemand]: 538/550 looper letters, 130 selfloop transitions, 95 changer transitions 65/290 dead transitions. [2023-08-30 22:06:04,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 290 transitions, 2371 flow [2023-08-30 22:06:04,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-30 22:06:04,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-30 22:06:04,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 5070 transitions. [2023-08-30 22:06:04,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24258373205741626 [2023-08-30 22:06:04,228 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 5070 transitions. [2023-08-30 22:06:04,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 5070 transitions. [2023-08-30 22:06:04,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:06:04,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 5070 transitions. [2023-08-30 22:06:04,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 133.42105263157896) internal successors, (5070), 38 states have internal predecessors, (5070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:06:04,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 550.0) internal successors, (21450), 39 states have internal predecessors, (21450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:06:04,262 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 550.0) internal successors, (21450), 39 states have internal predecessors, (21450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:06:04,262 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 565 flow. Second operand 38 states and 5070 transitions. [2023-08-30 22:06:04,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 290 transitions, 2371 flow [2023-08-30 22:06:04,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 290 transitions, 2002 flow, removed 156 selfloop flow, removed 7 redundant places. [2023-08-30 22:06:04,278 INFO L231 Difference]: Finished difference. Result has 113 places, 129 transitions, 1265 flow [2023-08-30 22:06:04,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1265, PETRI_PLACES=113, PETRI_TRANSITIONS=129} [2023-08-30 22:06:04,279 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 92 predicate places. [2023-08-30 22:06:04,279 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 129 transitions, 1265 flow [2023-08-30 22:06:04,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 129.1818181818182) internal successors, (2842), 22 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:06:04,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:06:04,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:06:04,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 22:06:04,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-08-30 22:06:04,486 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:06:04,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:06:04,487 INFO L85 PathProgramCache]: Analyzing trace with hash -384436778, now seen corresponding path program 2 times [2023-08-30 22:06:04,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:06:04,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221631036] [2023-08-30 22:06:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:06:04,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:06:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:06:04,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:06:04,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:06:04,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221631036] [2023-08-30 22:06:04,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221631036] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:06:04,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648637085] [2023-08-30 22:06:04,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 22:06:04,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:06:04,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:06:04,684 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:06:04,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 22:06:04,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 22:06:04,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:06:04,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 22:06:04,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:06:05,305 INFO L321 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2023-08-30 22:06:05,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 343 treesize of output 320 [2023-08-30 22:06:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:06:05,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:15:04,575 WARN L222 SmtUtils]: Spent 8.76m on a formula simplification. DAG size of input: 5617 DAG size of output: 4993 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15