./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/test-easy1.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 fc27937a34d27b10c960489127716dfcbd25a3140e1829dbc6f42b419387a4e7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 14:48:33,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 14:48:33,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 14:48:33,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 14:48:33,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 14:48:33,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 14:48:33,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 14:48:33,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 14:48:33,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 14:48:33,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 14:48:33,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 14:48:33,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 14:48:33,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 14:48:33,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 14:48:33,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 14:48:33,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 14:48:33,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 14:48:33,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 14:48:33,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 14:48:33,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 14:48:33,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 14:48:33,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 14:48:33,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 14:48:33,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 14:48:33,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 14:48:33,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 14:48:33,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 14:48:33,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 14:48:33,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 14:48:33,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 14:48:33,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 14:48:33,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 14:48:33,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 14:48:33,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 14:48:33,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 14:48:33,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 14:48:33,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 14:48:33,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 14:48:33,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 14:48:33,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 14:48:33,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 14:48:33,456 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 14:48:33,496 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 14:48:33,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 14:48:33,497 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 14:48:33,497 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 14:48:33,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 14:48:33,498 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 14:48:33,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 14:48:33,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 14:48:33,499 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 14:48:33,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 14:48:33,500 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 14:48:33,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 14:48:33,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 14:48:33,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 14:48:33,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 14:48:33,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 14:48:33,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 14:48:33,501 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 14:48:33,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 14:48:33,502 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 14:48:33,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 14:48:33,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 14:48:33,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 14:48:33,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 14:48:33,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 14:48:33,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 14:48:33,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 14:48:33,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 14:48:33,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 14:48:33,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 14:48:33,504 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 14:48:33,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 14:48:33,504 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 14:48:33,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 14:48:33,505 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 14:48:33,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc27937a34d27b10c960489127716dfcbd25a3140e1829dbc6f42b419387a4e7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 14:48:33,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 14:48:33,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 14:48:33,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 14:48:33,779 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 14:48:33,780 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 14:48:33,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-09-01 14:48:34,896 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 14:48:35,090 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 14:48:35,091 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-09-01 14:48:35,099 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65d59cdc8/c7759743ed2e4d13b513672df24621dc/FLAG9edf91399 [2023-09-01 14:48:35,116 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65d59cdc8/c7759743ed2e4d13b513672df24621dc [2023-09-01 14:48:35,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 14:48:35,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 14:48:35,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 14:48:35,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 14:48:35,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 14:48:35,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:48:35" (1/1) ... [2023-09-01 14:48:35,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e40e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:35, skipping insertion in model container [2023-09-01 14:48:35,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:48:35" (1/1) ... [2023-09-01 14:48:35,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 14:48:35,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 14:48:35,312 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/test-easy1.wvr.c[1876,1889] [2023-09-01 14:48:35,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 14:48:35,327 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 14:48:35,350 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/test-easy1.wvr.c[1876,1889] [2023-09-01 14:48:35,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 14:48:35,368 INFO L208 MainTranslator]: Completed translation [2023-09-01 14:48:35,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:35 WrapperNode [2023-09-01 14:48:35,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 14:48:35,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 14:48:35,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 14:48:35,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 14:48:35,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:35" (1/1) ... [2023-09-01 14:48:35,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:35" (1/1) ... [2023-09-01 14:48:35,405 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-09-01 14:48:35,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 14:48:35,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 14:48:35,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 14:48:35,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 14:48:35,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:35" (1/1) ... [2023-09-01 14:48:35,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:35" (1/1) ... [2023-09-01 14:48:35,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:35" (1/1) ... [2023-09-01 14:48:35,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:35" (1/1) ... [2023-09-01 14:48:35,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:35" (1/1) ... [2023-09-01 14:48:35,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:35" (1/1) ... [2023-09-01 14:48:35,443 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:35" (1/1) ... [2023-09-01 14:48:35,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:35" (1/1) ... [2023-09-01 14:48:35,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 14:48:35,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 14:48:35,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 14:48:35,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 14:48:35,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:35" (1/1) ... [2023-09-01 14:48:35,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 14:48:35,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:48:35,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 14:48:35,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 14:48:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 14:48:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 14:48:35,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 14:48:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 14:48:35,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 14:48:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 14:48:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 14:48:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 14:48:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 14:48:35,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 14:48:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 14:48:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 14:48:35,569 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 14:48:35,668 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 14:48:35,670 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 14:48:35,828 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 14:48:35,834 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 14:48:35,834 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 14:48:35,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:48:35 BoogieIcfgContainer [2023-09-01 14:48:35,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 14:48:35,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 14:48:35,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 14:48:35,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 14:48:35,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:48:35" (1/3) ... [2023-09-01 14:48:35,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131e8e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:48:35, skipping insertion in model container [2023-09-01 14:48:35,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:48:35" (2/3) ... [2023-09-01 14:48:35,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131e8e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:48:35, skipping insertion in model container [2023-09-01 14:48:35,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:48:35" (3/3) ... [2023-09-01 14:48:35,845 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2023-09-01 14:48:35,852 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 14:48:35,860 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 14:48:35,861 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 14:48:35,861 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 14:48:35,921 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 14:48:35,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 79 transitions, 174 flow [2023-09-01 14:48:35,997 INFO L130 PetriNetUnfolder]: 6/77 cut-off events. [2023-09-01 14:48:35,997 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 14:48:36,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 6/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-09-01 14:48:36,002 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 79 transitions, 174 flow [2023-09-01 14:48:36,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 69 transitions, 150 flow [2023-09-01 14:48:36,011 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 14:48:36,021 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 69 transitions, 150 flow [2023-09-01 14:48:36,029 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 69 transitions, 150 flow [2023-09-01 14:48:36,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 69 transitions, 150 flow [2023-09-01 14:48:36,053 INFO L130 PetriNetUnfolder]: 6/69 cut-off events. [2023-09-01 14:48:36,053 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 14:48:36,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 69 events. 6/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-09-01 14:48:36,055 INFO L119 LiptonReduction]: Number of co-enabled transitions 368 [2023-09-01 14:48:37,934 INFO L134 LiptonReduction]: Checked pairs total: 388 [2023-09-01 14:48:37,934 INFO L136 LiptonReduction]: Total number of compositions: 67 [2023-09-01 14:48:37,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 14:48:37,964 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;@6354a978, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 14:48:37,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 14:48:37,974 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2023-09-01 14:48:37,975 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 14:48:37,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:48:37,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:48:37,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 14:48:37,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:48:37,980 INFO L85 PathProgramCache]: Analyzing trace with hash 626447548, now seen corresponding path program 1 times [2023-09-01 14:48:37,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:48:37,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816120035] [2023-09-01 14:48:37,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:48:37,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:48:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:48:38,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:38,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:48:38,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816120035] [2023-09-01 14:48:38,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816120035] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:48:38,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:48:38,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 14:48:38,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492608772] [2023-09-01 14:48:38,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:48:38,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 14:48:38,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:48:38,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 14:48:38,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 14:48:38,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 146 [2023-09-01 14:48:38,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:38,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:48:38,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 146 [2023-09-01 14:48:38,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:48:38,578 INFO L130 PetriNetUnfolder]: 41/77 cut-off events. [2023-09-01 14:48:38,578 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-09-01 14:48:38,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 77 events. 41/77 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 165 event pairs, 9 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 120. Up to 51 conditions per place. [2023-09-01 14:48:38,581 INFO L137 encePairwiseOnDemand]: 142/146 looper letters, 19 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2023-09-01 14:48:38,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 23 transitions, 113 flow [2023-09-01 14:48:38,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 14:48:38,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 14:48:38,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2023-09-01 14:48:38,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931506849315068 [2023-09-01 14:48:38,598 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2023-09-01 14:48:38,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2023-09-01 14:48:38,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:48:38,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2023-09-01 14:48:38,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:38,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:38,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:38,615 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 216 transitions. [2023-09-01 14:48:38,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 23 transitions, 113 flow [2023-09-01 14:48:38,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 23 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 14:48:38,620 INFO L231 Difference]: Finished difference. Result has 17 places, 15 transitions, 49 flow [2023-09-01 14:48:38,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=17, PETRI_TRANSITIONS=15} [2023-09-01 14:48:38,628 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-09-01 14:48:38,628 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 15 transitions, 49 flow [2023-09-01 14:48:38,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:38,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:48:38,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:48:38,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 14:48:38,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 14:48:38,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:48:38,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2054649994, now seen corresponding path program 1 times [2023-09-01 14:48:38,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:48:38,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785506841] [2023-09-01 14:48:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:48:38,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:48:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:48:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:38,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:48:38,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785506841] [2023-09-01 14:48:38,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785506841] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:48:38,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:48:38,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 14:48:38,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94720923] [2023-09-01 14:48:38,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:48:38,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 14:48:38,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:48:38,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 14:48:38,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 14:48:38,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-09-01 14:48:38,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:38,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:48:38,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-09-01 14:48:38,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:48:38,844 INFO L130 PetriNetUnfolder]: 35/71 cut-off events. [2023-09-01 14:48:38,844 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 14:48:38,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 71 events. 35/71 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 158 event pairs, 6 based on Foata normal form. 6/77 useless extension candidates. Maximal degree in co-relation 55. Up to 45 conditions per place. [2023-09-01 14:48:38,846 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 15 selfloop transitions, 3 changer transitions 10/28 dead transitions. [2023-09-01 14:48:38,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 28 transitions, 135 flow [2023-09-01 14:48:38,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 14:48:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 14:48:38,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 270 transitions. [2023-09-01 14:48:38,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623287671232877 [2023-09-01 14:48:38,853 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 270 transitions. [2023-09-01 14:48:38,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 270 transitions. [2023-09-01 14:48:38,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:48:38,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 270 transitions. [2023-09-01 14:48:38,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:38,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:38,859 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:38,859 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 49 flow. Second operand 4 states and 270 transitions. [2023-09-01 14:48:38,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 28 transitions, 135 flow [2023-09-01 14:48:38,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 28 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 14:48:38,861 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 59 flow [2023-09-01 14:48:38,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=59, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2023-09-01 14:48:38,862 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2023-09-01 14:48:38,862 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 59 flow [2023-09-01 14:48:38,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:38,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:48:38,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:48:38,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 14:48:38,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 14:48:38,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:48:38,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1524373393, now seen corresponding path program 1 times [2023-09-01 14:48:38,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:48:38,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905306421] [2023-09-01 14:48:38,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:48:38,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:48:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:48:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:38,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:48:38,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905306421] [2023-09-01 14:48:38,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905306421] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:48:38,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619017041] [2023-09-01 14:48:38,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:48:38,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:48:38,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:48:38,981 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) [2023-09-01 14:48:39,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 14:48:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:48:39,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 14:48:39,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:48:39,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:39,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:48:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:39,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619017041] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 14:48:39,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 14:48:39,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-09-01 14:48:39,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300619771] [2023-09-01 14:48:39,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:48:39,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 14:48:39,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:48:39,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 14:48:39,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 14:48:39,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-09-01 14:48:39,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:39,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:48:39,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-09-01 14:48:39,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:48:39,299 INFO L130 PetriNetUnfolder]: 40/79 cut-off events. [2023-09-01 14:48:39,299 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 14:48:39,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 79 events. 40/79 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 168 event pairs, 2 based on Foata normal form. 6/85 useless extension candidates. Maximal degree in co-relation 53. Up to 39 conditions per place. [2023-09-01 14:48:39,300 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 24 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-09-01 14:48:39,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 30 transitions, 165 flow [2023-09-01 14:48:39,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 14:48:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 14:48:39,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 270 transitions. [2023-09-01 14:48:39,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623287671232877 [2023-09-01 14:48:39,302 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 270 transitions. [2023-09-01 14:48:39,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 270 transitions. [2023-09-01 14:48:39,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:48:39,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 270 transitions. [2023-09-01 14:48:39,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:39,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:39,305 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:39,305 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 59 flow. Second operand 4 states and 270 transitions. [2023-09-01 14:48:39,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 30 transitions, 165 flow [2023-09-01 14:48:39,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 30 transitions, 155 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 14:48:39,307 INFO L231 Difference]: Finished difference. Result has 22 places, 18 transitions, 88 flow [2023-09-01 14:48:39,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=22, PETRI_TRANSITIONS=18} [2023-09-01 14:48:39,308 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 4 predicate places. [2023-09-01 14:48:39,308 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 18 transitions, 88 flow [2023-09-01 14:48:39,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:39,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:48:39,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:48:39,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 14:48:39,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:48:39,514 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 14:48:39,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:48:39,514 INFO L85 PathProgramCache]: Analyzing trace with hash 664575342, now seen corresponding path program 2 times [2023-09-01 14:48:39,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:48:39,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093120071] [2023-09-01 14:48:39,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:48:39,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:48:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:48:39,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:39,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:48:39,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093120071] [2023-09-01 14:48:39,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093120071] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:48:39,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88607926] [2023-09-01 14:48:39,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 14:48:39,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:48:39,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:48:39,621 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) [2023-09-01 14:48:39,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 14:48:39,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 14:48:39,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:48:39,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 14:48:39,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:48:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:39,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:48:39,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:39,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88607926] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 14:48:39,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 14:48:39,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2023-09-01 14:48:39,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629069774] [2023-09-01 14:48:39,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:48:39,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 14:48:39,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:48:39,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 14:48:39,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-09-01 14:48:39,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 146 [2023-09-01 14:48:39,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 18 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 63.4) internal successors, (317), 5 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:39,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:48:39,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 146 [2023-09-01 14:48:39,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:48:39,972 INFO L130 PetriNetUnfolder]: 76/156 cut-off events. [2023-09-01 14:48:39,973 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2023-09-01 14:48:39,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 156 events. 76/156 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 490 event pairs, 4 based on Foata normal form. 1/157 useless extension candidates. Maximal degree in co-relation 132. Up to 64 conditions per place. [2023-09-01 14:48:39,976 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 35 selfloop transitions, 9 changer transitions 2/46 dead transitions. [2023-09-01 14:48:39,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 46 transitions, 285 flow [2023-09-01 14:48:39,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 14:48:39,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 14:48:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 347 transitions. [2023-09-01 14:48:39,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47534246575342465 [2023-09-01 14:48:39,979 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 347 transitions. [2023-09-01 14:48:39,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 347 transitions. [2023-09-01 14:48:39,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:48:39,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 347 transitions. [2023-09-01 14:48:39,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:39,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:39,982 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:39,982 INFO L175 Difference]: Start difference. First operand has 22 places, 18 transitions, 88 flow. Second operand 5 states and 347 transitions. [2023-09-01 14:48:39,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 46 transitions, 285 flow [2023-09-01 14:48:39,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 46 transitions, 285 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 14:48:39,987 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 172 flow [2023-09-01 14:48:39,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-09-01 14:48:39,989 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 12 predicate places. [2023-09-01 14:48:39,989 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 172 flow [2023-09-01 14:48:39,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.4) internal successors, (317), 5 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:39,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:48:39,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:48:39,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 14:48:40,195 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,SelfDestructingSolverStorable3 [2023-09-01 14:48:40,195 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 14:48:40,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:48:40,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1369565425, now seen corresponding path program 1 times [2023-09-01 14:48:40,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:48:40,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767035632] [2023-09-01 14:48:40,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:48:40,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:48:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:48:40,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:40,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:48:40,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767035632] [2023-09-01 14:48:40,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767035632] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:48:40,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400310824] [2023-09-01 14:48:40,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:48:40,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:48:40,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:48:40,303 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) [2023-09-01 14:48:40,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 14:48:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:48:40,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 14:48:40,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:48:40,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:40,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:48:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:40,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400310824] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:48:40,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:48:40,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 2] total 9 [2023-09-01 14:48:40,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630139729] [2023-09-01 14:48:40,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:48:40,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 14:48:40,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:48:40,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 14:48:40,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-09-01 14:48:40,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-09-01 14:48:40,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 172 flow. Second operand has 10 states, 10 states have (on average 63.7) internal successors, (637), 10 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:40,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:48:40,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-09-01 14:48:40,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:48:40,788 INFO L130 PetriNetUnfolder]: 124/248 cut-off events. [2023-09-01 14:48:40,789 INFO L131 PetriNetUnfolder]: For 724/724 co-relation queries the response was YES. [2023-09-01 14:48:40,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 248 events. 124/248 cut-off events. For 724/724 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 947 event pairs, 2 based on Foata normal form. 29/277 useless extension candidates. Maximal degree in co-relation 298. Up to 83 conditions per place. [2023-09-01 14:48:40,792 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 25 selfloop transitions, 13 changer transitions 38/76 dead transitions. [2023-09-01 14:48:40,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 76 transitions, 622 flow [2023-09-01 14:48:40,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 14:48:40,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 14:48:40,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 721 transitions. [2023-09-01 14:48:40,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489414694894147 [2023-09-01 14:48:40,795 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 721 transitions. [2023-09-01 14:48:40,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 721 transitions. [2023-09-01 14:48:40,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:48:40,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 721 transitions. [2023-09-01 14:48:40,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.54545454545455) internal successors, (721), 11 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:40,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:40,802 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:40,802 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 172 flow. Second operand 11 states and 721 transitions. [2023-09-01 14:48:40,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 76 transitions, 622 flow [2023-09-01 14:48:40,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 76 transitions, 614 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-09-01 14:48:40,809 INFO L231 Difference]: Finished difference. Result has 46 places, 27 transitions, 247 flow [2023-09-01 14:48:40,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=247, PETRI_PLACES=46, PETRI_TRANSITIONS=27} [2023-09-01 14:48:40,811 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 28 predicate places. [2023-09-01 14:48:40,811 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions, 247 flow [2023-09-01 14:48:40,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 63.7) internal successors, (637), 10 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:40,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:48:40,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:48:40,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 14:48:41,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:48:41,017 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 14:48:41,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:48:41,018 INFO L85 PathProgramCache]: Analyzing trace with hash -514417009, now seen corresponding path program 2 times [2023-09-01 14:48:41,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:48:41,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506368153] [2023-09-01 14:48:41,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:48:41,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:48:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:48:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:41,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:48:41,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506368153] [2023-09-01 14:48:41,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506368153] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:48:41,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648774830] [2023-09-01 14:48:41,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 14:48:41,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:48:41,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:48:41,125 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:48:41,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 14:48:41,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 14:48:41,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:48:41,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 14:48:41,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:48:41,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:41,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 14:48:41,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648774830] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:48:41,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 14:48:41,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-09-01 14:48:41,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458955981] [2023-09-01 14:48:41,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:48:41,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 14:48:41,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:48:41,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 14:48:41,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 14:48:41,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-09-01 14:48:41,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:41,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:48:41,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-09-01 14:48:41,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:48:41,332 INFO L130 PetriNetUnfolder]: 48/94 cut-off events. [2023-09-01 14:48:41,332 INFO L131 PetriNetUnfolder]: For 534/534 co-relation queries the response was YES. [2023-09-01 14:48:41,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 94 events. 48/94 cut-off events. For 534/534 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 208 event pairs, 6 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 402. Up to 41 conditions per place. [2023-09-01 14:48:41,334 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 27 selfloop transitions, 4 changer transitions 10/41 dead transitions. [2023-09-01 14:48:41,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 404 flow [2023-09-01 14:48:41,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 14:48:41,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 14:48:41,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 389 transitions. [2023-09-01 14:48:41,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440639269406393 [2023-09-01 14:48:41,336 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 389 transitions. [2023-09-01 14:48:41,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 389 transitions. [2023-09-01 14:48:41,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:48:41,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 389 transitions. [2023-09-01 14:48:41,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 64.83333333333333) internal successors, (389), 6 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:41,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:41,340 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:41,341 INFO L175 Difference]: Start difference. First operand has 46 places, 27 transitions, 247 flow. Second operand 6 states and 389 transitions. [2023-09-01 14:48:41,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 404 flow [2023-09-01 14:48:41,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 335 flow, removed 23 selfloop flow, removed 9 redundant places. [2023-09-01 14:48:41,343 INFO L231 Difference]: Finished difference. Result has 42 places, 25 transitions, 183 flow [2023-09-01 14:48:41,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=183, PETRI_PLACES=42, PETRI_TRANSITIONS=25} [2023-09-01 14:48:41,344 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 24 predicate places. [2023-09-01 14:48:41,344 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 25 transitions, 183 flow [2023-09-01 14:48:41,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:41,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:48:41,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:48:41,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 14:48:41,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:48:41,545 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 14:48:41,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:48:41,545 INFO L85 PathProgramCache]: Analyzing trace with hash -587854281, now seen corresponding path program 3 times [2023-09-01 14:48:41,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:48:41,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615167616] [2023-09-01 14:48:41,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:48:41,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:48:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:48:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:41,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:48:41,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615167616] [2023-09-01 14:48:41,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615167616] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:48:41,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876026182] [2023-09-01 14:48:41,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 14:48:41,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:48:41,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:48:41,675 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:48:41,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 14:48:41,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-09-01 14:48:41,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:48:41,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 14:48:41,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:48:41,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:41,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:48:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:48:41,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876026182] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:48:41,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:48:41,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 2] total 9 [2023-09-01 14:48:41,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140734878] [2023-09-01 14:48:41,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:48:41,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 14:48:41,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:48:41,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 14:48:41,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-09-01 14:48:41,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-09-01 14:48:41,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 25 transitions, 183 flow. Second operand has 10 states, 10 states have (on average 63.7) internal successors, (637), 10 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:41,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:48:41,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-09-01 14:48:41,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:48:42,051 INFO L130 PetriNetUnfolder]: 65/123 cut-off events. [2023-09-01 14:48:42,052 INFO L131 PetriNetUnfolder]: For 790/790 co-relation queries the response was YES. [2023-09-01 14:48:42,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 123 events. 65/123 cut-off events. For 790/790 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 317 event pairs, 4 based on Foata normal form. 5/128 useless extension candidates. Maximal degree in co-relation 616. Up to 43 conditions per place. [2023-09-01 14:48:42,053 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 26 selfloop transitions, 12 changer transitions 8/46 dead transitions. [2023-09-01 14:48:42,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 433 flow [2023-09-01 14:48:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 14:48:42,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 14:48:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 457 transitions. [2023-09-01 14:48:42,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4471624266144814 [2023-09-01 14:48:42,055 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 457 transitions. [2023-09-01 14:48:42,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 457 transitions. [2023-09-01 14:48:42,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:48:42,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 457 transitions. [2023-09-01 14:48:42,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.28571428571429) internal successors, (457), 7 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:42,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:42,059 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:42,059 INFO L175 Difference]: Start difference. First operand has 42 places, 25 transitions, 183 flow. Second operand 7 states and 457 transitions. [2023-09-01 14:48:42,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 433 flow [2023-09-01 14:48:42,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 387 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-09-01 14:48:42,063 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 255 flow [2023-09-01 14:48:42,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2023-09-01 14:48:42,064 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 24 predicate places. [2023-09-01 14:48:42,065 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 255 flow [2023-09-01 14:48:42,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 63.7) internal successors, (637), 10 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:42,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:48:42,067 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:48:42,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 14:48:42,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:48:42,276 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 14:48:42,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:48:42,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1141489714, now seen corresponding path program 4 times [2023-09-01 14:48:42,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:48:42,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777209879] [2023-09-01 14:48:42,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:48:42,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:48:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:48:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:42,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:48:42,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777209879] [2023-09-01 14:48:42,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777209879] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:48:42,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891894645] [2023-09-01 14:48:42,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 14:48:42,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:48:42,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:48:42,353 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:48:42,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 14:48:42,410 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 14:48:42,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:48:42,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 14:48:42,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:48:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:42,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:48:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:42,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891894645] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:48:42,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:48:42,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-09-01 14:48:42,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813261925] [2023-09-01 14:48:42,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:48:42,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 14:48:42,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:48:42,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 14:48:42,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-09-01 14:48:42,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-09-01 14:48:42,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 255 flow. Second operand has 10 states, 10 states have (on average 62.4) internal successors, (624), 10 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:42,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:48:42,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-09-01 14:48:42,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:48:42,709 INFO L130 PetriNetUnfolder]: 75/144 cut-off events. [2023-09-01 14:48:42,709 INFO L131 PetriNetUnfolder]: For 596/596 co-relation queries the response was YES. [2023-09-01 14:48:42,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 144 events. 75/144 cut-off events. For 596/596 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 407 event pairs, 0 based on Foata normal form. 8/152 useless extension candidates. Maximal degree in co-relation 394. Up to 67 conditions per place. [2023-09-01 14:48:42,711 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 39 selfloop transitions, 18 changer transitions 10/67 dead transitions. [2023-09-01 14:48:42,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 67 transitions, 607 flow [2023-09-01 14:48:42,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 14:48:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 14:48:42,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 838 transitions. [2023-09-01 14:48:42,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44151738672286617 [2023-09-01 14:48:42,714 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 838 transitions. [2023-09-01 14:48:42,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 838 transitions. [2023-09-01 14:48:42,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:48:42,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 838 transitions. [2023-09-01 14:48:42,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.46153846153847) internal successors, (838), 13 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:42,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:42,721 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:42,721 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 255 flow. Second operand 13 states and 838 transitions. [2023-09-01 14:48:42,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 67 transitions, 607 flow [2023-09-01 14:48:42,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 67 transitions, 583 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-09-01 14:48:42,725 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 395 flow [2023-09-01 14:48:42,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=395, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-09-01 14:48:42,725 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 40 predicate places. [2023-09-01 14:48:42,725 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 395 flow [2023-09-01 14:48:42,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 62.4) internal successors, (624), 10 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:42,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:48:42,726 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:48:42,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 14:48:42,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:48:42,932 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 14:48:42,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:48:42,933 INFO L85 PathProgramCache]: Analyzing trace with hash -189341905, now seen corresponding path program 5 times [2023-09-01 14:48:42,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:48:42,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042187156] [2023-09-01 14:48:42,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:48:42,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:48:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:48:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:43,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:48:43,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042187156] [2023-09-01 14:48:43,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042187156] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:48:43,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965542133] [2023-09-01 14:48:43,029 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 14:48:43,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:48:43,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:48:43,030 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:48:43,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 14:48:43,091 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 14:48:43,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:48:43,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 14:48:43,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:48:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:43,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:48:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:43,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965542133] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:48:43,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:48:43,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-09-01 14:48:43,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761969148] [2023-09-01 14:48:43,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:48:43,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 14:48:43,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:48:43,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 14:48:43,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-09-01 14:48:43,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-09-01 14:48:43,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 395 flow. Second operand has 10 states, 10 states have (on average 62.4) internal successors, (624), 10 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:43,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:48:43,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-09-01 14:48:43,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:48:43,382 INFO L130 PetriNetUnfolder]: 100/179 cut-off events. [2023-09-01 14:48:43,382 INFO L131 PetriNetUnfolder]: For 1852/1852 co-relation queries the response was YES. [2023-09-01 14:48:43,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 179 events. 100/179 cut-off events. For 1852/1852 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 522 event pairs, 0 based on Foata normal form. 12/191 useless extension candidates. Maximal degree in co-relation 914. Up to 113 conditions per place. [2023-09-01 14:48:43,384 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 50 selfloop transitions, 17 changer transitions 11/78 dead transitions. [2023-09-01 14:48:43,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 909 flow [2023-09-01 14:48:43,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 14:48:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 14:48:43,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 839 transitions. [2023-09-01 14:48:43,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44204425711275025 [2023-09-01 14:48:43,387 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 839 transitions. [2023-09-01 14:48:43,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 839 transitions. [2023-09-01 14:48:43,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:48:43,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 839 transitions. [2023-09-01 14:48:43,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.53846153846153) internal successors, (839), 13 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:43,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:43,393 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:43,393 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 395 flow. Second operand 13 states and 839 transitions. [2023-09-01 14:48:43,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 909 flow [2023-09-01 14:48:43,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 78 transitions, 835 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-09-01 14:48:43,400 INFO L231 Difference]: Finished difference. Result has 74 places, 53 transitions, 546 flow [2023-09-01 14:48:43,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=546, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2023-09-01 14:48:43,401 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 56 predicate places. [2023-09-01 14:48:43,401 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 546 flow [2023-09-01 14:48:43,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 62.4) internal successors, (624), 10 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:43,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:48:43,401 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:48:43,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 14:48:43,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:48:43,607 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 14:48:43,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:48:43,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1556551870, now seen corresponding path program 6 times [2023-09-01 14:48:43,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:48:43,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800425628] [2023-09-01 14:48:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:48:43,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:48:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:48:43,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 14:48:43,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:48:43,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800425628] [2023-09-01 14:48:43,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800425628] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:48:43,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615677212] [2023-09-01 14:48:43,714 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 14:48:43,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:48:43,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:48:43,716 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:48:43,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 14:48:43,771 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-09-01 14:48:43,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:48:43,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 14:48:43,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:48:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 14:48:43,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 14:48:43,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615677212] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:48:43,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 14:48:43,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-09-01 14:48:43,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708675724] [2023-09-01 14:48:43,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:48:43,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 14:48:43,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:48:43,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 14:48:43,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-09-01 14:48:43,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-09-01 14:48:43,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:43,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:48:43,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-09-01 14:48:43,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:48:43,919 INFO L130 PetriNetUnfolder]: 99/189 cut-off events. [2023-09-01 14:48:43,919 INFO L131 PetriNetUnfolder]: For 2064/2064 co-relation queries the response was YES. [2023-09-01 14:48:43,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 189 events. 99/189 cut-off events. For 2064/2064 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 591 event pairs, 2 based on Foata normal form. 1/190 useless extension candidates. Maximal degree in co-relation 1086. Up to 112 conditions per place. [2023-09-01 14:48:43,921 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 17 selfloop transitions, 1 changer transitions 53/71 dead transitions. [2023-09-01 14:48:43,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 71 transitions, 851 flow [2023-09-01 14:48:43,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 14:48:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 14:48:43,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 392 transitions. [2023-09-01 14:48:43,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474885844748858 [2023-09-01 14:48:43,923 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 392 transitions. [2023-09-01 14:48:43,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 392 transitions. [2023-09-01 14:48:43,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:48:43,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 392 transitions. [2023-09-01 14:48:43,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:43,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:43,926 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:43,926 INFO L175 Difference]: Start difference. First operand has 74 places, 53 transitions, 546 flow. Second operand 6 states and 392 transitions. [2023-09-01 14:48:43,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 71 transitions, 851 flow [2023-09-01 14:48:43,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 728 flow, removed 60 selfloop flow, removed 3 redundant places. [2023-09-01 14:48:43,936 INFO L231 Difference]: Finished difference. Result has 78 places, 17 transitions, 155 flow [2023-09-01 14:48:43,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=155, PETRI_PLACES=78, PETRI_TRANSITIONS=17} [2023-09-01 14:48:43,937 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 60 predicate places. [2023-09-01 14:48:43,937 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 17 transitions, 155 flow [2023-09-01 14:48:43,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:43,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:48:43,938 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:48:43,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-09-01 14:48:44,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 14:48:44,145 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 14:48:44,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:48:44,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1217237182, now seen corresponding path program 7 times [2023-09-01 14:48:44,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:48:44,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809538953] [2023-09-01 14:48:44,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:48:44,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:48:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:48:44,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 14:48:44,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:48:44,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809538953] [2023-09-01 14:48:44,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809538953] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:48:44,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463293455] [2023-09-01 14:48:44,247 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 14:48:44,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:48:44,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:48:44,249 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:48:44,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 14:48:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:48:44,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 14:48:44,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:48:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:48:44,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:48:44,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:48:44,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463293455] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:48:44,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:48:44,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 3] total 12 [2023-09-01 14:48:44,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837343867] [2023-09-01 14:48:44,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:48:44,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 14:48:44,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:48:44,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 14:48:44,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-09-01 14:48:44,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-09-01 14:48:44,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 17 transitions, 155 flow. Second operand has 13 states, 13 states have (on average 63.15384615384615) internal successors, (821), 13 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:44,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:48:44,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-09-01 14:48:44,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:48:44,663 INFO L130 PetriNetUnfolder]: 20/56 cut-off events. [2023-09-01 14:48:44,663 INFO L131 PetriNetUnfolder]: For 1161/1161 co-relation queries the response was YES. [2023-09-01 14:48:44,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 56 events. 20/56 cut-off events. For 1161/1161 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 108 event pairs, 0 based on Foata normal form. 1/57 useless extension candidates. Maximal degree in co-relation 353. Up to 19 conditions per place. [2023-09-01 14:48:44,664 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2023-09-01 14:48:44,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 31 transitions, 359 flow [2023-09-01 14:48:44,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 14:48:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 14:48:44,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 571 transitions. [2023-09-01 14:48:44,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4345509893455099 [2023-09-01 14:48:44,666 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 571 transitions. [2023-09-01 14:48:44,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 571 transitions. [2023-09-01 14:48:44,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:48:44,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 571 transitions. [2023-09-01 14:48:44,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.44444444444444) internal successors, (571), 9 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:44,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 146.0) internal successors, (1460), 10 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:44,670 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 146.0) internal successors, (1460), 10 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:44,670 INFO L175 Difference]: Start difference. First operand has 78 places, 17 transitions, 155 flow. Second operand 9 states and 571 transitions. [2023-09-01 14:48:44,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 31 transitions, 359 flow [2023-09-01 14:48:44,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 31 transitions, 219 flow, removed 52 selfloop flow, removed 24 redundant places. [2023-09-01 14:48:44,673 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-09-01 14:48:44,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-09-01 14:48:44,674 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 25 predicate places. [2023-09-01 14:48:44,674 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-09-01 14:48:44,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 63.15384615384615) internal successors, (821), 13 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:48:44,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-09-01 14:48:44,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 14:48:44,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 14:48:44,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 14:48:44,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:48:44,883 INFO L445 BasicCegarLoop]: Path program histogram: [7, 2, 1, 1] [2023-09-01 14:48:44,885 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 14:48:44,885 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 14:48:44,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 02:48:44 BasicIcfg [2023-09-01 14:48:44,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 14:48:44,888 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 14:48:44,888 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 14:48:44,888 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 14:48:44,888 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:48:35" (3/4) ... [2023-09-01 14:48:44,890 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 14:48:44,895 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 14:48:44,896 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 14:48:44,899 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-09-01 14:48:44,899 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 14:48:44,900 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 14:48:44,900 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 14:48:44,933 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 14:48:44,934 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 14:48:44,934 INFO L158 Benchmark]: Toolchain (without parser) took 9814.83ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 46.4MB in the beginning and 33.5MB in the end (delta: 12.9MB). Peak memory consumption was 67.2MB. Max. memory is 16.1GB. [2023-09-01 14:48:44,934 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory was 30.6MB in the beginning and 30.6MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 14:48:44,935 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.36ms. Allocated memory is still 69.2MB. Free memory was 46.2MB in the beginning and 35.3MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 14:48:44,935 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.36ms. Allocated memory is still 69.2MB. Free memory was 35.3MB in the beginning and 33.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 14:48:44,935 INFO L158 Benchmark]: Boogie Preprocessor took 43.86ms. Allocated memory is still 69.2MB. Free memory was 33.7MB in the beginning and 32.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 14:48:44,935 INFO L158 Benchmark]: RCFGBuilder took 387.72ms. Allocated memory is still 69.2MB. Free memory was 32.5MB in the beginning and 38.9MB in the end (delta: -6.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 14:48:44,936 INFO L158 Benchmark]: TraceAbstraction took 9047.44ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 38.2MB in the beginning and 35.6MB in the end (delta: 2.5MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2023-09-01 14:48:44,936 INFO L158 Benchmark]: Witness Printer took 45.89ms. Allocated memory is still 121.6MB. Free memory was 35.6MB in the beginning and 33.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 14:48:44,938 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory was 30.6MB in the beginning and 30.6MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.36ms. Allocated memory is still 69.2MB. Free memory was 46.2MB in the beginning and 35.3MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.36ms. Allocated memory is still 69.2MB. Free memory was 35.3MB in the beginning and 33.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.86ms. Allocated memory is still 69.2MB. Free memory was 33.7MB in the beginning and 32.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 387.72ms. Allocated memory is still 69.2MB. Free memory was 32.5MB in the beginning and 38.9MB in the end (delta: -6.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 9047.44ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 38.2MB in the beginning and 35.6MB in the end (delta: 2.5MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. * Witness Printer took 45.89ms. Allocated memory is still 121.6MB. Free memory was 35.6MB in the beginning and 33.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 70 PlacesBefore, 18 PlacesAfterwards, 69 TransitionsBefore, 13 TransitionsAfterwards, 368 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 67 TotalNumberOfCompositions, 388 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 388, independent: 388, independent conditional: 0, independent unconditional: 388, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 207, independent: 207, independent conditional: 0, independent unconditional: 207, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 388, independent: 181, independent conditional: 0, independent unconditional: 181, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 207, unknown conditional: 0, unknown unconditional: 207] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 70]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 90 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.9s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 673 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 523 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1771 IncrementalHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 16 mSDtfsCounter, 1771 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 285 GetRequests, 180 SyntacticMatches, 8 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=546occurred in iteration=9, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 265 NumberOfCodeBlocks, 265 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 331 ConstructedInterpolants, 0 QuantifiedInterpolants, 1932 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1002 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 27 InterpolantComputations, 6 PerfectInterpolantSequences, 34/77 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 14:48:44,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE