./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/chl-array-int-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 01:03:07,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:03:07,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:03:07,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:03:07,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:03:07,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:03:07,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:03:07,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:03:07,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:03:07,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:03:07,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:03:07,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:03:07,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:03:07,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:03:07,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:03:07,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:03:07,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:03:07,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:03:07,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:03:07,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:03:07,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:03:07,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:03:07,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:03:07,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:03:07,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:03:07,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:03:07,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:03:07,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:03:07,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:03:07,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:03:07,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:03:07,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:03:07,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:03:07,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:03:07,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:03:07,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:03:07,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:03:07,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:03:07,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:03:07,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:03:07,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:03:07,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:03:07,404 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:03:07,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:03:07,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:03:07,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:03:07,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:03:07,407 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:03:07,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:03:07,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:03:07,408 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:03:07,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:03:07,412 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:03:07,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:03:07,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:03:07,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:03:07,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:03:07,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:03:07,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:03:07,413 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:03:07,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:03:07,414 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:03:07,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:03:07,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:03:07,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:03:07,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:03:07,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:03:07,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:03:07,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:03:07,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:03:07,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:03:07,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:03:07,415 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:03:07,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:03:07,416 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:03:07,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:03:07,416 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:03:07,416 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:03:07,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:03:07,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:03:07,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:03:07,704 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:03:07,705 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:03:07,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2023-08-31 01:03:08,849 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:03:09,069 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:03:09,070 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2023-08-31 01:03:09,081 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e1c6a34d/2323c770d8b64b44b7bd23e43fa824f8/FLAG23002c4b7 [2023-08-31 01:03:09,092 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e1c6a34d/2323c770d8b64b44b7bd23e43fa824f8 [2023-08-31 01:03:09,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:03:09,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:03:09,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:03:09,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:03:09,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:03:09,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:03:09" (1/1) ... [2023-08-31 01:03:09,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd14f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:09, skipping insertion in model container [2023-08-31 01:03:09,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:03:09" (1/1) ... [2023-08-31 01:03:09,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:03:09,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:03:09,247 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/chl-array-int-trans.wvr.c[2728,2741] [2023-08-31 01:03:09,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:03:09,271 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:03:09,291 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/chl-array-int-trans.wvr.c[2728,2741] [2023-08-31 01:03:09,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:03:09,307 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:03:09,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:09 WrapperNode [2023-08-31 01:03:09,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:03:09,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:03:09,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:03:09,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:03:09,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:09" (1/1) ... [2023-08-31 01:03:09,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:09" (1/1) ... [2023-08-31 01:03:09,394 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 283 [2023-08-31 01:03:09,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:03:09,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:03:09,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:03:09,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:03:09,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:09" (1/1) ... [2023-08-31 01:03:09,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:09" (1/1) ... [2023-08-31 01:03:09,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:09" (1/1) ... [2023-08-31 01:03:09,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:09" (1/1) ... [2023-08-31 01:03:09,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:09" (1/1) ... [2023-08-31 01:03:09,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:09" (1/1) ... [2023-08-31 01:03:09,423 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:09" (1/1) ... [2023-08-31 01:03:09,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:09" (1/1) ... [2023-08-31 01:03:09,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:03:09,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:03:09,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:03:09,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:03:09,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:09" (1/1) ... [2023-08-31 01:03:09,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:03:09,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:09,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 01:03:09,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 01:03:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:03:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:03:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:03:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:03:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:03:09,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:03:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:03:09,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:03:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 01:03:09,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 01:03:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:03:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 01:03:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:03:09,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:03:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:03:09,506 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 01:03:09,658 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:03:09,660 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:03:10,165 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:03:10,175 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:03:10,175 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-31 01:03:10,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:03:10 BoogieIcfgContainer [2023-08-31 01:03:10,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:03:10,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:03:10,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:03:10,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:03:10,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:03:09" (1/3) ... [2023-08-31 01:03:10,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495dd5d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:03:10, skipping insertion in model container [2023-08-31 01:03:10,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:03:09" (2/3) ... [2023-08-31 01:03:10,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495dd5d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:03:10, skipping insertion in model container [2023-08-31 01:03:10,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:03:10" (3/3) ... [2023-08-31 01:03:10,185 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2023-08-31 01:03:10,191 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:03:10,199 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:03:10,199 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:03:10,199 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:03:10,306 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 01:03:10,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 318 transitions, 660 flow [2023-08-31 01:03:10,480 INFO L130 PetriNetUnfolder]: 28/315 cut-off events. [2023-08-31 01:03:10,480 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:03:10,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 315 events. 28/315 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 504 event pairs, 0 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 245. Up to 3 conditions per place. [2023-08-31 01:03:10,489 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 318 transitions, 660 flow [2023-08-31 01:03:10,501 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 305 transitions, 628 flow [2023-08-31 01:03:10,523 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:03:10,544 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 305 transitions, 628 flow [2023-08-31 01:03:10,546 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 305 transitions, 628 flow [2023-08-31 01:03:10,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 305 transitions, 628 flow [2023-08-31 01:03:10,616 INFO L130 PetriNetUnfolder]: 28/305 cut-off events. [2023-08-31 01:03:10,617 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:03:10,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 305 events. 28/305 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 503 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 245. Up to 3 conditions per place. [2023-08-31 01:03:10,629 INFO L119 LiptonReduction]: Number of co-enabled transitions 14784 [2023-08-31 01:03:19,172 INFO L134 LiptonReduction]: Checked pairs total: 16298 [2023-08-31 01:03:19,172 INFO L136 LiptonReduction]: Total number of compositions: 336 [2023-08-31 01:03:19,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:03:19,189 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;@3dd03634, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:03:19,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 01:03:19,198 INFO L130 PetriNetUnfolder]: 8/35 cut-off events. [2023-08-31 01:03:19,203 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:03:19,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:19,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:19,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:03:19,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:19,210 INFO L85 PathProgramCache]: Analyzing trace with hash -917067574, now seen corresponding path program 1 times [2023-08-31 01:03:19,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:19,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027441114] [2023-08-31 01:03:19,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:19,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:19,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:03:19,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:19,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027441114] [2023-08-31 01:03:19,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027441114] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:19,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:03:19,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:03:19,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134413186] [2023-08-31 01:03:19,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:19,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:03:19,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:19,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:03:19,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:03:20,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 654 [2023-08-31 01:03:20,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 280.4) internal successors, (1402), 5 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:20,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:20,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 654 [2023-08-31 01:03:20,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:20,604 INFO L130 PetriNetUnfolder]: 1848/2604 cut-off events. [2023-08-31 01:03:20,605 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2023-08-31 01:03:20,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5448 conditions, 2604 events. 1848/2604 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10381 event pairs, 646 based on Foata normal form. 1/1980 useless extension candidates. Maximal degree in co-relation 2528. Up to 1171 conditions per place. [2023-08-31 01:03:20,617 INFO L137 encePairwiseOnDemand]: 647/654 looper letters, 92 selfloop transitions, 6 changer transitions 4/102 dead transitions. [2023-08-31 01:03:20,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 102 transitions, 462 flow [2023-08-31 01:03:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:03:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:03:20,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1759 transitions. [2023-08-31 01:03:20,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44826707441386343 [2023-08-31 01:03:20,640 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1759 transitions. [2023-08-31 01:03:20,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1759 transitions. [2023-08-31 01:03:20,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:20,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1759 transitions. [2023-08-31 01:03:20,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 293.1666666666667) internal successors, (1759), 6 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:20,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 654.0) internal successors, (4578), 7 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:20,667 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 654.0) internal successors, (4578), 7 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:20,669 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 90 flow. Second operand 6 states and 1759 transitions. [2023-08-31 01:03:20,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 102 transitions, 462 flow [2023-08-31 01:03:20,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 102 transitions, 426 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 01:03:20,677 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 117 flow [2023-08-31 01:03:20,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=117, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-08-31 01:03:20,682 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2023-08-31 01:03:20,683 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 117 flow [2023-08-31 01:03:20,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 280.4) internal successors, (1402), 5 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:20,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:20,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:20,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:03:20,685 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:03:20,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:20,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1395278390, now seen corresponding path program 1 times [2023-08-31 01:03:20,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:20,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838792182] [2023-08-31 01:03:20,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:20,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:21,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:03:21,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:21,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838792182] [2023-08-31 01:03:21,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838792182] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:21,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939881194] [2023-08-31 01:03:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:21,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:21,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:21,077 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:21,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 01:03:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:21,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-31 01:03:21,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:21,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:03:21,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:03:21,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:03:21,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939881194] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:21,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:03:21,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 13 [2023-08-31 01:03:21,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129250429] [2023-08-31 01:03:21,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:21,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:03:21,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:21,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:03:21,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-08-31 01:03:21,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 654 [2023-08-31 01:03:21,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 270.8333333333333) internal successors, (1625), 6 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:21,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:21,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 654 [2023-08-31 01:03:21,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:22,407 INFO L130 PetriNetUnfolder]: 3853/5458 cut-off events. [2023-08-31 01:03:22,407 INFO L131 PetriNetUnfolder]: For 392/392 co-relation queries the response was YES. [2023-08-31 01:03:22,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11824 conditions, 5458 events. 3853/5458 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 26177 event pairs, 744 based on Foata normal form. 1/4159 useless extension candidates. Maximal degree in co-relation 5912. Up to 2332 conditions per place. [2023-08-31 01:03:22,431 INFO L137 encePairwiseOnDemand]: 644/654 looper letters, 141 selfloop transitions, 11 changer transitions 8/160 dead transitions. [2023-08-31 01:03:22,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 160 transitions, 748 flow [2023-08-31 01:03:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:03:22,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:03:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2825 transitions. [2023-08-31 01:03:22,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4319571865443425 [2023-08-31 01:03:22,438 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2825 transitions. [2023-08-31 01:03:22,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2825 transitions. [2023-08-31 01:03:22,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:22,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2825 transitions. [2023-08-31 01:03:22,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 282.5) internal successors, (2825), 10 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:22,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 654.0) internal successors, (7194), 11 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:22,457 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 654.0) internal successors, (7194), 11 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:22,457 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 117 flow. Second operand 10 states and 2825 transitions. [2023-08-31 01:03:22,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 160 transitions, 748 flow [2023-08-31 01:03:22,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 160 transitions, 739 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-31 01:03:22,463 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 196 flow [2023-08-31 01:03:22,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-08-31 01:03:22,464 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-08-31 01:03:22,464 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 196 flow [2023-08-31 01:03:22,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 270.8333333333333) internal successors, (1625), 6 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:22,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:22,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:22,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 01:03:22,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:22,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:03:22,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:22,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1072286339, now seen corresponding path program 1 times [2023-08-31 01:03:22,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:22,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895138145] [2023-08-31 01:03:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:22,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:03:22,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:22,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895138145] [2023-08-31 01:03:22,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895138145] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:22,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474010016] [2023-08-31 01:03:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:22,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:22,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:22,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:22,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 01:03:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:23,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 01:03:23,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:03:23,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:03:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:03:23,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474010016] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:23,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:03:23,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2023-08-31 01:03:23,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151559022] [2023-08-31 01:03:23,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:23,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:03:23,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:23,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:03:23,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-08-31 01:03:23,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 654 [2023-08-31 01:03:23,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 269.42857142857144) internal successors, (1886), 7 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:23,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:23,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 654 [2023-08-31 01:03:23,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:24,667 INFO L130 PetriNetUnfolder]: 5619/8120 cut-off events. [2023-08-31 01:03:24,668 INFO L131 PetriNetUnfolder]: For 902/902 co-relation queries the response was YES. [2023-08-31 01:03:24,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18141 conditions, 8120 events. 5619/8120 cut-off events. For 902/902 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 42062 event pairs, 1656 based on Foata normal form. 0/6236 useless extension candidates. Maximal degree in co-relation 11716. Up to 2674 conditions per place. [2023-08-31 01:03:24,709 INFO L137 encePairwiseOnDemand]: 644/654 looper letters, 161 selfloop transitions, 17 changer transitions 2/180 dead transitions. [2023-08-31 01:03:24,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 180 transitions, 910 flow [2023-08-31 01:03:24,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:03:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:03:24,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2829 transitions. [2023-08-31 01:03:24,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325688073394495 [2023-08-31 01:03:24,718 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2829 transitions. [2023-08-31 01:03:24,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2829 transitions. [2023-08-31 01:03:24,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:24,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2829 transitions. [2023-08-31 01:03:24,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 282.9) internal successors, (2829), 10 states have internal predecessors, (2829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:24,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 654.0) internal successors, (7194), 11 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:24,737 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 654.0) internal successors, (7194), 11 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:24,737 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 196 flow. Second operand 10 states and 2829 transitions. [2023-08-31 01:03:24,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 180 transitions, 910 flow [2023-08-31 01:03:24,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 180 transitions, 909 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:03:24,745 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 266 flow [2023-08-31 01:03:24,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=266, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2023-08-31 01:03:24,746 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 23 predicate places. [2023-08-31 01:03:24,747 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 266 flow [2023-08-31 01:03:24,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 269.42857142857144) internal successors, (1886), 7 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:24,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:24,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:24,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 01:03:24,960 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,SelfDestructingSolverStorable2 [2023-08-31 01:03:24,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:03:24,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:24,961 INFO L85 PathProgramCache]: Analyzing trace with hash -885160629, now seen corresponding path program 1 times [2023-08-31 01:03:24,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:24,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098340017] [2023-08-31 01:03:24,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:24,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:25,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:03:25,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:25,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098340017] [2023-08-31 01:03:25,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098340017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:25,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:03:25,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:03:25,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606788868] [2023-08-31 01:03:25,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:25,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:03:25,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:25,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:03:25,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:03:25,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 654 [2023-08-31 01:03:25,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:25,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:25,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 654 [2023-08-31 01:03:25,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:25,818 INFO L130 PetriNetUnfolder]: 3495/5132 cut-off events. [2023-08-31 01:03:25,819 INFO L131 PetriNetUnfolder]: For 1807/1807 co-relation queries the response was YES. [2023-08-31 01:03:25,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12286 conditions, 5132 events. 3495/5132 cut-off events. For 1807/1807 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 24773 event pairs, 1802 based on Foata normal form. 0/4432 useless extension candidates. Maximal degree in co-relation 7166. Up to 3137 conditions per place. [2023-08-31 01:03:25,845 INFO L137 encePairwiseOnDemand]: 649/654 looper letters, 42 selfloop transitions, 4 changer transitions 51/97 dead transitions. [2023-08-31 01:03:25,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 97 transitions, 572 flow [2023-08-31 01:03:25,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:03:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:03:25,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1454 transitions. [2023-08-31 01:03:25,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44464831804281346 [2023-08-31 01:03:25,850 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1454 transitions. [2023-08-31 01:03:25,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1454 transitions. [2023-08-31 01:03:25,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:25,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1454 transitions. [2023-08-31 01:03:25,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.8) internal successors, (1454), 5 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:25,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 654.0) internal successors, (3924), 6 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:25,859 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 654.0) internal successors, (3924), 6 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:25,859 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 266 flow. Second operand 5 states and 1454 transitions. [2023-08-31 01:03:25,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 97 transitions, 572 flow [2023-08-31 01:03:25,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 97 transitions, 558 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-31 01:03:25,872 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 195 flow [2023-08-31 01:03:25,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2023-08-31 01:03:25,873 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-08-31 01:03:25,873 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 195 flow [2023-08-31 01:03:25,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:25,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:25,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:25,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 01:03:25,876 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:03:25,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:25,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1196564902, now seen corresponding path program 1 times [2023-08-31 01:03:25,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:25,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959941162] [2023-08-31 01:03:25,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:25,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:03:26,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:26,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959941162] [2023-08-31 01:03:26,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959941162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:26,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:03:26,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:03:26,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889591882] [2023-08-31 01:03:26,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:26,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:03:26,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:26,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:03:26,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:03:26,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 654 [2023-08-31 01:03:26,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 280.2) internal successors, (1401), 5 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:26,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:26,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 654 [2023-08-31 01:03:26,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:26,590 INFO L130 PetriNetUnfolder]: 1573/2264 cut-off events. [2023-08-31 01:03:26,591 INFO L131 PetriNetUnfolder]: For 998/998 co-relation queries the response was YES. [2023-08-31 01:03:26,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5468 conditions, 2264 events. 1573/2264 cut-off events. For 998/998 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8876 event pairs, 882 based on Foata normal form. 50/2032 useless extension candidates. Maximal degree in co-relation 5448. Up to 1658 conditions per place. [2023-08-31 01:03:26,602 INFO L137 encePairwiseOnDemand]: 649/654 looper letters, 37 selfloop transitions, 2 changer transitions 44/83 dead transitions. [2023-08-31 01:03:26,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 452 flow [2023-08-31 01:03:26,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:03:26,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:03:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1456 transitions. [2023-08-31 01:03:26,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452599388379205 [2023-08-31 01:03:26,608 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1456 transitions. [2023-08-31 01:03:26,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1456 transitions. [2023-08-31 01:03:26,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:26,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1456 transitions. [2023-08-31 01:03:26,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.2) internal successors, (1456), 5 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:26,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 654.0) internal successors, (3924), 6 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:26,617 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 654.0) internal successors, (3924), 6 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:26,618 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 195 flow. Second operand 5 states and 1456 transitions. [2023-08-31 01:03:26,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 452 flow [2023-08-31 01:03:26,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 83 transitions, 403 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-08-31 01:03:26,623 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 126 flow [2023-08-31 01:03:26,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-08-31 01:03:26,625 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2023-08-31 01:03:26,625 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 126 flow [2023-08-31 01:03:26,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 280.2) internal successors, (1401), 5 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:26,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:26,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:26,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 01:03:26,627 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:03:26,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:26,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1703835318, now seen corresponding path program 1 times [2023-08-31 01:03:26,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:26,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189821064] [2023-08-31 01:03:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:26,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:03:26,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:26,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189821064] [2023-08-31 01:03:26,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189821064] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:26,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264899157] [2023-08-31 01:03:26,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:26,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:26,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:26,983 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:26,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 01:03:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:27,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-31 01:03:27,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:03:27,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:03:27,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:03:27,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264899157] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:03:27,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:03:27,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 16 [2023-08-31 01:03:27,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431003464] [2023-08-31 01:03:27,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:03:27,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-31 01:03:27,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:27,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-31 01:03:27,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-08-31 01:03:28,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 654 [2023-08-31 01:03:28,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 126 flow. Second operand has 18 states, 18 states have (on average 263.3333333333333) internal successors, (4740), 18 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:28,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:28,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 654 [2023-08-31 01:03:28,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:30,247 INFO L130 PetriNetUnfolder]: 5562/8013 cut-off events. [2023-08-31 01:03:30,247 INFO L131 PetriNetUnfolder]: For 2569/2569 co-relation queries the response was YES. [2023-08-31 01:03:30,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18100 conditions, 8013 events. 5562/8013 cut-off events. For 2569/2569 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 40995 event pairs, 1689 based on Foata normal form. 6/6885 useless extension candidates. Maximal degree in co-relation 18083. Up to 1524 conditions per place. [2023-08-31 01:03:30,272 INFO L137 encePairwiseOnDemand]: 642/654 looper letters, 137 selfloop transitions, 16 changer transitions 163/316 dead transitions. [2023-08-31 01:03:30,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 316 transitions, 1483 flow [2023-08-31 01:03:30,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-31 01:03:30,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-31 01:03:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 6817 transitions. [2023-08-31 01:03:30,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41694189602446485 [2023-08-31 01:03:30,287 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 6817 transitions. [2023-08-31 01:03:30,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 6817 transitions. [2023-08-31 01:03:30,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:30,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 6817 transitions. [2023-08-31 01:03:30,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 272.68) internal successors, (6817), 25 states have internal predecessors, (6817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:30,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 654.0) internal successors, (17004), 26 states have internal predecessors, (17004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:30,334 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 654.0) internal successors, (17004), 26 states have internal predecessors, (17004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:30,335 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 126 flow. Second operand 25 states and 6817 transitions. [2023-08-31 01:03:30,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 316 transitions, 1483 flow [2023-08-31 01:03:30,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 316 transitions, 1444 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-31 01:03:30,340 INFO L231 Difference]: Finished difference. Result has 78 places, 52 transitions, 240 flow [2023-08-31 01:03:30,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=240, PETRI_PLACES=78, PETRI_TRANSITIONS=52} [2023-08-31 01:03:30,343 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 40 predicate places. [2023-08-31 01:03:30,343 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 52 transitions, 240 flow [2023-08-31 01:03:30,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 263.3333333333333) internal successors, (4740), 18 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:30,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:30,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:30,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-31 01:03:30,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:30,550 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:03:30,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:30,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1693095200, now seen corresponding path program 1 times [2023-08-31 01:03:30,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:30,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700863562] [2023-08-31 01:03:30,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:30,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:30,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:03:30,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:30,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700863562] [2023-08-31 01:03:30,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700863562] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:30,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477570246] [2023-08-31 01:03:30,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:30,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:30,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:30,753 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) [2023-08-31 01:03:30,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 01:03:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:30,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 01:03:30,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:03:30,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:03:31,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:03:31,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477570246] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:31,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:03:31,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 14 [2023-08-31 01:03:31,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903694124] [2023-08-31 01:03:31,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:31,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:03:31,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:31,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:03:31,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-08-31 01:03:31,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 654 [2023-08-31 01:03:31,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 52 transitions, 240 flow. Second operand has 7 states, 7 states have (on average 270.0) internal successors, (1890), 7 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:31,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:31,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 654 [2023-08-31 01:03:31,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:31,858 INFO L130 PetriNetUnfolder]: 4352/6331 cut-off events. [2023-08-31 01:03:31,858 INFO L131 PetriNetUnfolder]: For 13601/13601 co-relation queries the response was YES. [2023-08-31 01:03:31,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19251 conditions, 6331 events. 4352/6331 cut-off events. For 13601/13601 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 31465 event pairs, 1173 based on Foata normal form. 0/5874 useless extension candidates. Maximal degree in co-relation 16152. Up to 4090 conditions per place. [2023-08-31 01:03:31,903 INFO L137 encePairwiseOnDemand]: 646/654 looper letters, 65 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2023-08-31 01:03:31,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 505 flow [2023-08-31 01:03:31,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:03:31,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:03:31,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1921 transitions. [2023-08-31 01:03:31,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196155526430756 [2023-08-31 01:03:31,908 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1921 transitions. [2023-08-31 01:03:31,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1921 transitions. [2023-08-31 01:03:31,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:31,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1921 transitions. [2023-08-31 01:03:31,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 274.42857142857144) internal successors, (1921), 7 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:31,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 654.0) internal successors, (5232), 8 states have internal predecessors, (5232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:31,919 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 654.0) internal successors, (5232), 8 states have internal predecessors, (5232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:31,919 INFO L175 Difference]: Start difference. First operand has 78 places, 52 transitions, 240 flow. Second operand 7 states and 1921 transitions. [2023-08-31 01:03:31,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 505 flow [2023-08-31 01:03:31,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 76 transitions, 451 flow, removed 24 selfloop flow, removed 9 redundant places. [2023-08-31 01:03:31,997 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 240 flow [2023-08-31 01:03:31,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2023-08-31 01:03:31,998 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2023-08-31 01:03:31,998 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 240 flow [2023-08-31 01:03:31,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 270.0) internal successors, (1890), 7 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:31,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:31,999 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:32,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-31 01:03:32,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:32,206 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:03:32,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:32,207 INFO L85 PathProgramCache]: Analyzing trace with hash 975190112, now seen corresponding path program 1 times [2023-08-31 01:03:32,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:32,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090139219] [2023-08-31 01:03:32,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:32,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 01:03:32,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:32,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090139219] [2023-08-31 01:03:32,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090139219] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:32,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82796493] [2023-08-31 01:03:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:32,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:32,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:32,446 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) [2023-08-31 01:03:32,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 01:03:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:32,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-31 01:03:32,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 01:03:32,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:03:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 01:03:32,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82796493] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:03:32,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:03:32,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-31 01:03:32,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552516286] [2023-08-31 01:03:32,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:03:32,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 01:03:32,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:32,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 01:03:32,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-31 01:03:33,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 654 [2023-08-31 01:03:33,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 240 flow. Second operand has 14 states, 14 states have (on average 270.2857142857143) internal successors, (3784), 14 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:33,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:33,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 654 [2023-08-31 01:03:33,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:34,695 INFO L130 PetriNetUnfolder]: 10150/14755 cut-off events. [2023-08-31 01:03:34,695 INFO L131 PetriNetUnfolder]: For 13466/13466 co-relation queries the response was YES. [2023-08-31 01:03:34,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41872 conditions, 14755 events. 10150/14755 cut-off events. For 13466/13466 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 82381 event pairs, 4193 based on Foata normal form. 6/14759 useless extension candidates. Maximal degree in co-relation 29773. Up to 5684 conditions per place. [2023-08-31 01:03:34,768 INFO L137 encePairwiseOnDemand]: 645/654 looper letters, 167 selfloop transitions, 18 changer transitions 8/193 dead transitions. [2023-08-31 01:03:34,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 193 transitions, 1189 flow [2023-08-31 01:03:34,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 01:03:34,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 01:03:34,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3359 transitions. [2023-08-31 01:03:34,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42800713557594294 [2023-08-31 01:03:34,777 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3359 transitions. [2023-08-31 01:03:34,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3359 transitions. [2023-08-31 01:03:34,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:34,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3359 transitions. [2023-08-31 01:03:34,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 279.9166666666667) internal successors, (3359), 12 states have internal predecessors, (3359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:34,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 654.0) internal successors, (8502), 13 states have internal predecessors, (8502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:34,794 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 654.0) internal successors, (8502), 13 states have internal predecessors, (8502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:34,794 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 240 flow. Second operand 12 states and 3359 transitions. [2023-08-31 01:03:34,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 193 transitions, 1189 flow [2023-08-31 01:03:34,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 193 transitions, 1166 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 01:03:34,808 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 375 flow [2023-08-31 01:03:34,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=375, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2023-08-31 01:03:34,810 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 44 predicate places. [2023-08-31 01:03:34,810 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 375 flow [2023-08-31 01:03:34,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 270.2857142857143) internal successors, (3784), 14 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:34,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:34,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:34,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 01:03:35,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:35,018 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:03:35,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:35,018 INFO L85 PathProgramCache]: Analyzing trace with hash 241561077, now seen corresponding path program 1 times [2023-08-31 01:03:35,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:35,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573803156] [2023-08-31 01:03:35,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:35,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:03:36,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:36,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573803156] [2023-08-31 01:03:36,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573803156] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:36,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377819700] [2023-08-31 01:03:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:36,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:36,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:36,243 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) [2023-08-31 01:03:36,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 01:03:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:36,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 62 conjunts are in the unsatisfiable core [2023-08-31 01:03:36,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:36,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 01:03:36,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 01:03:36,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 01:03:36,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 01:03:37,379 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-08-31 01:03:37,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 40 [2023-08-31 01:03:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:03:37,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:03:38,568 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (* |c_thread1Thread1of1ForFork1_~i~0#1| 4))) (let ((.cse2 (+ .cse10 c_~a1~0.offset)) (.cse4 (+ .cse10 c_~a2~0.offset))) (let ((.cse0 (forall ((v_ArrVal_427 (Array Int Int)) (~a1~0.base Int) (~a2~0.base Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_427))) (let ((.cse9 (select .cse8 ~a2~0.base))) (or (< (select (select .cse8 ~a1~0.base) .cse2) (+ (select .cse9 .cse4) 1)) (< (select .cse9 c_~a2~0.offset) (+ (select (select .cse8 c_~a3~0.base) c_~a3~0.offset) 1)))))))) (and (or (< 0 c_~n1~0) .cse0) (or .cse0 (< 0 c_~n3~0)) (forall ((v_ArrVal_427 (Array Int Int)) (~a2~0.base Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_427))) (let ((.cse3 (select .cse7 ~a2~0.base)) (.cse6 (select (select .cse7 c_~a3~0.base) c_~a3~0.offset))) (or (forall ((~a1~0.base Int)) (let ((.cse1 (select .cse7 ~a1~0.base))) (let ((.cse5 (select .cse1 c_~a1~0.offset))) (or (< (select .cse1 .cse2) (+ (select .cse3 .cse4) 1)) (< (+ .cse5 2147483648) .cse6) (< .cse6 .cse5) (= .cse5 .cse6))))) (< (select .cse3 c_~a2~0.offset) (+ .cse6 1)))))))))) is different from false [2023-08-31 01:03:38,780 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (* |c_thread1Thread1of1ForFork1_~i~0#1| 4))) (let ((.cse3 (+ .cse10 c_~a1~0.offset)) (.cse5 (+ .cse10 c_~a2~0.offset))) (let ((.cse7 (forall ((v_ArrVal_427 (Array Int Int)) (v_ArrVal_426 (Array Int Int)) (~a1~0.base Int) (~a2~0.base Int)) (let ((.cse8 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_426) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_427))) (let ((.cse9 (select .cse8 ~a2~0.base))) (or (< (select (select .cse8 ~a1~0.base) .cse3) (+ (select .cse9 .cse5) 1)) (< (select .cse9 c_~a2~0.offset) (+ (select (select .cse8 c_~a3~0.base) c_~a3~0.offset) 1)))))))) (and (forall ((v_ArrVal_427 (Array Int Int)) (v_ArrVal_426 (Array Int Int)) (~a2~0.base Int)) (let ((.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_426) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_427))) (let ((.cse4 (select .cse6 ~a2~0.base)) (.cse0 (select (select .cse6 c_~a3~0.base) c_~a3~0.offset))) (or (forall ((~a1~0.base Int)) (let ((.cse2 (select .cse6 ~a1~0.base))) (let ((.cse1 (select .cse2 c_~a1~0.offset))) (or (< .cse0 .cse1) (< (+ .cse1 2147483648) .cse0) (< (select .cse2 .cse3) (+ (select .cse4 .cse5) 1)) (= .cse1 .cse0))))) (< (select .cse4 c_~a2~0.offset) (+ .cse0 1)))))) (or .cse7 (< 0 c_~n3~0)) (or .cse7 (< 0 c_~n1~0)))))) is different from false [2023-08-31 01:03:39,049 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:03:39,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 75 [2023-08-31 01:03:39,094 INFO L321 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2023-08-31 01:03:39,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4971 treesize of output 4736 [2023-08-31 01:03:39,346 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:03:39,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2347 treesize of output 2115 [2023-08-31 01:03:39,420 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:03:39,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2091 treesize of output 1987 [2023-08-31 01:03:39,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:03:39,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1963 treesize of output 1923 [2023-08-31 01:04:48,341 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:04:48,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 75 [2023-08-31 01:04:48,394 INFO L321 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2023-08-31 01:04:48,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29931 treesize of output 28416 [2023-08-31 01:04:48,724 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:04:48,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2347 treesize of output 2115 [2023-08-31 01:04:48,774 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:04:48,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2091 treesize of output 2051 [2023-08-31 01:04:48,825 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:04:48,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2027 treesize of output 1923 [2023-08-31 01:06:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:06:57,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377819700] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:06:57,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:06:57,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 41 [2023-08-31 01:06:57,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934970316] [2023-08-31 01:06:57,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:06:57,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-08-31 01:06:57,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:06:57,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-08-31 01:06:57,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1423, Unknown=13, NotChecked=158, Total=1806 [2023-08-31 01:06:57,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 654 [2023-08-31 01:06:57,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 375 flow. Second operand has 43 states, 43 states have (on average 183.06976744186048) internal successors, (7872), 43 states have internal predecessors, (7872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:06:57,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:06:57,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 654 [2023-08-31 01:06:57,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:07:03,955 INFO L130 PetriNetUnfolder]: 22407/33056 cut-off events. [2023-08-31 01:07:03,956 INFO L131 PetriNetUnfolder]: For 23840/23840 co-relation queries the response was YES. [2023-08-31 01:07:04,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91731 conditions, 33056 events. 22407/33056 cut-off events. For 23840/23840 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 215167 event pairs, 5202 based on Foata normal form. 14/33070 useless extension candidates. Maximal degree in co-relation 65222. Up to 13419 conditions per place. [2023-08-31 01:07:04,319 INFO L137 encePairwiseOnDemand]: 635/654 looper letters, 214 selfloop transitions, 64 changer transitions 28/306 dead transitions. [2023-08-31 01:07:04,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 306 transitions, 1830 flow [2023-08-31 01:07:04,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-31 01:07:04,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-31 01:07:04,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5130 transitions. [2023-08-31 01:07:04,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.290519877675841 [2023-08-31 01:07:04,334 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 5130 transitions. [2023-08-31 01:07:04,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 5130 transitions. [2023-08-31 01:07:04,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:07:04,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 5130 transitions. [2023-08-31 01:07:04,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 190.0) internal successors, (5130), 27 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:04,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 654.0) internal successors, (18312), 28 states have internal predecessors, (18312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:04,368 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 654.0) internal successors, (18312), 28 states have internal predecessors, (18312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:04,369 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 375 flow. Second operand 27 states and 5130 transitions. [2023-08-31 01:07:04,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 306 transitions, 1830 flow [2023-08-31 01:07:04,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 306 transitions, 1817 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-31 01:07:04,396 INFO L231 Difference]: Finished difference. Result has 122 places, 115 transitions, 845 flow [2023-08-31 01:07:04,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=845, PETRI_PLACES=122, PETRI_TRANSITIONS=115} [2023-08-31 01:07:04,398 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 84 predicate places. [2023-08-31 01:07:04,398 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 115 transitions, 845 flow [2023-08-31 01:07:04,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 183.06976744186048) internal successors, (7872), 43 states have internal predecessors, (7872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:04,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:07:04,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:07:04,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-31 01:07:04,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:07:04,605 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:07:04,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:07:04,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1846702689, now seen corresponding path program 2 times [2023-08-31 01:07:04,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:07:04,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399384012] [2023-08-31 01:07:04,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:07:04,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:07:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:07:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:07:05,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:07:05,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399384012] [2023-08-31 01:07:05,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399384012] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:07:05,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414423227] [2023-08-31 01:07:05,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:07:05,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:07:05,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:07:05,698 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) [2023-08-31 01:07:05,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 01:07:05,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 01:07:05,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:07:05,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-31 01:07:05,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:07:06,610 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-08-31 01:07:06,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 40 [2023-08-31 01:07:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 01:07:06,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:07:06,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414423227] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:07:06,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:07:06,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 28 [2023-08-31 01:07:06,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211339594] [2023-08-31 01:07:06,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:07:06,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-31 01:07:06,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:07:06,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-31 01:07:06,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2023-08-31 01:07:07,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 654 [2023-08-31 01:07:07,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 115 transitions, 845 flow. Second operand has 16 states, 16 states have (on average 249.9375) internal successors, (3999), 16 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:07,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:07:07,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 654 [2023-08-31 01:07:07,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:07:13,050 INFO L130 PetriNetUnfolder]: 27720/41392 cut-off events. [2023-08-31 01:07:13,050 INFO L131 PetriNetUnfolder]: For 150331/150331 co-relation queries the response was YES. [2023-08-31 01:07:13,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167274 conditions, 41392 events. 27720/41392 cut-off events. For 150331/150331 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 288638 event pairs, 7145 based on Foata normal form. 7/41399 useless extension candidates. Maximal degree in co-relation 166493. Up to 13495 conditions per place. [2023-08-31 01:07:13,525 INFO L137 encePairwiseOnDemand]: 637/654 looper letters, 227 selfloop transitions, 33 changer transitions 14/274 dead transitions. [2023-08-31 01:07:13,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 274 transitions, 2378 flow [2023-08-31 01:07:13,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 01:07:13,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 01:07:13,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3387 transitions. [2023-08-31 01:07:13,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39837685250529287 [2023-08-31 01:07:13,537 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3387 transitions. [2023-08-31 01:07:13,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3387 transitions. [2023-08-31 01:07:13,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:07:13,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3387 transitions. [2023-08-31 01:07:13,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 260.53846153846155) internal successors, (3387), 13 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:13,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 654.0) internal successors, (9156), 14 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:13,558 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 654.0) internal successors, (9156), 14 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:13,558 INFO L175 Difference]: Start difference. First operand has 122 places, 115 transitions, 845 flow. Second operand 13 states and 3387 transitions. [2023-08-31 01:07:13,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 274 transitions, 2378 flow [2023-08-31 01:07:14,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 274 transitions, 2222 flow, removed 68 selfloop flow, removed 9 redundant places. [2023-08-31 01:07:14,070 INFO L231 Difference]: Finished difference. Result has 130 places, 131 transitions, 1047 flow [2023-08-31 01:07:14,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1047, PETRI_PLACES=130, PETRI_TRANSITIONS=131} [2023-08-31 01:07:14,071 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 92 predicate places. [2023-08-31 01:07:14,071 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 131 transitions, 1047 flow [2023-08-31 01:07:14,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 249.9375) internal successors, (3999), 16 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:14,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:07:14,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:07:14,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-31 01:07:14,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:07:14,278 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:07:14,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:07:14,279 INFO L85 PathProgramCache]: Analyzing trace with hash 801462021, now seen corresponding path program 3 times [2023-08-31 01:07:14,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:07:14,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802770675] [2023-08-31 01:07:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:07:14,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:07:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:07:15,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:07:15,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:07:15,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802770675] [2023-08-31 01:07:15,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802770675] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:07:15,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808979833] [2023-08-31 01:07:15,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:07:15,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:07:15,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:07:15,543 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) [2023-08-31 01:07:15,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-31 01:07:15,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 01:07:15,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:07:15,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-31 01:07:15,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:07:16,450 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-08-31 01:07:16,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 40 [2023-08-31 01:07:16,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 01:07:16,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:07:16,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808979833] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:07:16,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:07:16,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 28 [2023-08-31 01:07:16,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049093573] [2023-08-31 01:07:16,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:07:16,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-31 01:07:16,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:07:16,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-31 01:07:16,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2023-08-31 01:07:17,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 654 [2023-08-31 01:07:17,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 131 transitions, 1047 flow. Second operand has 16 states, 16 states have (on average 249.9375) internal successors, (3999), 16 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:17,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:07:17,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 654 [2023-08-31 01:07:17,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:07:25,461 INFO L130 PetriNetUnfolder]: 37219/55811 cut-off events. [2023-08-31 01:07:25,462 INFO L131 PetriNetUnfolder]: For 288919/288919 co-relation queries the response was YES. [2023-08-31 01:07:25,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257529 conditions, 55811 events. 37219/55811 cut-off events. For 288919/288919 co-relation queries the response was YES. Maximal size of possible extension queue 2086. Compared 409290 event pairs, 10693 based on Foata normal form. 7/55818 useless extension candidates. Maximal degree in co-relation 256402. Up to 25171 conditions per place. [2023-08-31 01:07:26,107 INFO L137 encePairwiseOnDemand]: 639/654 looper letters, 266 selfloop transitions, 44 changer transitions 12/322 dead transitions. [2023-08-31 01:07:26,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 322 transitions, 3162 flow [2023-08-31 01:07:26,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 01:07:26,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 01:07:26,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3378 transitions. [2023-08-31 01:07:26,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39731827805222303 [2023-08-31 01:07:26,114 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3378 transitions. [2023-08-31 01:07:26,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3378 transitions. [2023-08-31 01:07:26,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:07:26,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3378 transitions. [2023-08-31 01:07:26,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 259.84615384615387) internal successors, (3378), 13 states have internal predecessors, (3378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:26,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 654.0) internal successors, (9156), 14 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:26,127 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 654.0) internal successors, (9156), 14 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:26,127 INFO L175 Difference]: Start difference. First operand has 130 places, 131 transitions, 1047 flow. Second operand 13 states and 3378 transitions. [2023-08-31 01:07:26,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 322 transitions, 3162 flow [2023-08-31 01:07:30,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 322 transitions, 3056 flow, removed 36 selfloop flow, removed 5 redundant places. [2023-08-31 01:07:30,101 INFO L231 Difference]: Finished difference. Result has 145 places, 157 transitions, 1429 flow [2023-08-31 01:07:30,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1429, PETRI_PLACES=145, PETRI_TRANSITIONS=157} [2023-08-31 01:07:30,101 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 107 predicate places. [2023-08-31 01:07:30,102 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 157 transitions, 1429 flow [2023-08-31 01:07:30,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 249.9375) internal successors, (3999), 16 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:07:30,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:07:30,102 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:07:30,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-31 01:07:30,303 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,SelfDestructingSolverStorable10 [2023-08-31 01:07:30,303 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:07:30,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:07:30,304 INFO L85 PathProgramCache]: Analyzing trace with hash 785158062, now seen corresponding path program 1 times [2023-08-31 01:07:30,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:07:30,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218280686] [2023-08-31 01:07:30,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:07:30,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:07:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:07:31,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 01:07:31,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:07:31,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218280686] [2023-08-31 01:07:31,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218280686] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:07:31,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012116335] [2023-08-31 01:07:31,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:07:31,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:07:31,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:07:31,249 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) [2023-08-31 01:07:31,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-31 01:07:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:07:31,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 68 conjunts are in the unsatisfiable core [2023-08-31 01:07:31,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:07:31,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 01:07:31,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 01:07:31,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 01:07:31,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 01:07:32,531 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-08-31 01:07:32,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 64 [2023-08-31 01:07:32,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 01:07:32,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:07:33,810 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:07:33,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 73 [2023-08-31 01:07:33,861 INFO L321 Elim1Store]: treesize reduction 8, result has 76.5 percent of original size [2023-08-31 01:07:33,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 9451 treesize of output 8964 [2023-08-31 01:07:34,179 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:07:34,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2219 treesize of output 2179 [2023-08-31 01:07:34,237 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:07:34,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2155 treesize of output 2051 [2023-08-31 01:07:34,302 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:07:34,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2027 treesize of output 1795 [2023-08-31 01:07:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 01:07:59,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012116335] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:07:59,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:07:59,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 46 [2023-08-31 01:07:59,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254292893] [2023-08-31 01:07:59,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:07:59,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-31 01:07:59,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:07:59,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-31 01:07:59,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1849, Unknown=8, NotChecked=0, Total=2256 [2023-08-31 01:08:03,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 654 [2023-08-31 01:08:03,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 157 transitions, 1429 flow. Second operand has 48 states, 48 states have (on average 182.875) internal successors, (8778), 48 states have internal predecessors, (8778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:08:03,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:08:03,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 654 [2023-08-31 01:08:03,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:08:25,445 INFO L130 PetriNetUnfolder]: 45607/69348 cut-off events. [2023-08-31 01:08:25,445 INFO L131 PetriNetUnfolder]: For 443693/443693 co-relation queries the response was YES. [2023-08-31 01:08:26,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343103 conditions, 69348 events. 45607/69348 cut-off events. For 443693/443693 co-relation queries the response was YES. Maximal size of possible extension queue 2389. Compared 525509 event pairs, 12600 based on Foata normal form. 40/69388 useless extension candidates. Maximal degree in co-relation 341485. Up to 15983 conditions per place. [2023-08-31 01:08:26,493 INFO L137 encePairwiseOnDemand]: 634/654 looper letters, 1085 selfloop transitions, 231 changer transitions 108/1424 dead transitions. [2023-08-31 01:08:26,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 1424 transitions, 13675 flow [2023-08-31 01:08:26,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-08-31 01:08:26,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2023-08-31 01:08:26,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 17488 transitions. [2023-08-31 01:08:26,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2938468259569177 [2023-08-31 01:08:26,518 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 17488 transitions. [2023-08-31 01:08:26,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 17488 transitions. [2023-08-31 01:08:26,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:08:26,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 17488 transitions. [2023-08-31 01:08:26,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 92 states, 91 states have (on average 192.17582417582418) internal successors, (17488), 91 states have internal predecessors, (17488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:08:26,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 92 states, 92 states have (on average 654.0) internal successors, (60168), 92 states have internal predecessors, (60168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:08:26,599 INFO L81 ComplementDD]: Finished complementDD. Result has 92 states, 92 states have (on average 654.0) internal successors, (60168), 92 states have internal predecessors, (60168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:08:26,600 INFO L175 Difference]: Start difference. First operand has 145 places, 157 transitions, 1429 flow. Second operand 91 states and 17488 transitions. [2023-08-31 01:08:26,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 1424 transitions, 13675 flow [2023-08-31 01:08:33,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 1424 transitions, 12765 flow, removed 433 selfloop flow, removed 5 redundant places. [2023-08-31 01:08:33,911 INFO L231 Difference]: Finished difference. Result has 287 places, 354 transitions, 4125 flow [2023-08-31 01:08:33,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=91, PETRI_FLOW=4125, PETRI_PLACES=287, PETRI_TRANSITIONS=354} [2023-08-31 01:08:33,911 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 249 predicate places. [2023-08-31 01:08:33,912 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 354 transitions, 4125 flow [2023-08-31 01:08:33,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 182.875) internal successors, (8778), 48 states have internal predecessors, (8778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:08:33,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:08:33,913 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:08:33,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-31 01:08:34,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:08:34,114 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:08:34,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:08:34,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1816406924, now seen corresponding path program 2 times [2023-08-31 01:08:34,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:08:34,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664538781] [2023-08-31 01:08:34,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:08:34,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:08:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:08:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 01:08:35,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:08:35,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664538781] [2023-08-31 01:08:35,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664538781] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:08:35,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003491628] [2023-08-31 01:08:35,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:08:35,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:08:35,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:08:35,086 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:08:35,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-31 01:08:35,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 01:08:35,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:08:35,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-31 01:08:35,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:08:35,746 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 01:08:35,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 45 [2023-08-31 01:08:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 01:08:35,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:08:37,324 INFO L321 Elim1Store]: treesize reduction 44, result has 93.0 percent of original size [2023-08-31 01:08:37,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 153 treesize of output 633 Killed by 15