./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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/goblint-regression/28-race_reach_70-funloop_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 10:15:20,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:15:20,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:15:20,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:15:20,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:15:20,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:15:20,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:15:20,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:15:20,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:15:20,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:15:20,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:15:20,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:15:20,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:15:20,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:15:20,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:15:20,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:15:20,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:15:20,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:15:20,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:15:20,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:15:20,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:15:20,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:15:20,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:15:20,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:15:20,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:15:20,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:15:20,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:15:20,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:15:20,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:15:20,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:15:20,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:15:20,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:15:20,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:15:20,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:15:20,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:15:20,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:15:20,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:15:20,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:15:20,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:15:20,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:15:20,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:15:20,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:15:20,403 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:15:20,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:15:20,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:15:20,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:15:20,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:15:20,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:15:20,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:15:20,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:15:20,405 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:15:20,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:15:20,406 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:15:20,406 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:15:20,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:15:20,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:15:20,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:15:20,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:15:20,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:15:20,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:15:20,407 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:15:20,408 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:15:20,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:15:20,408 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:15:20,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:15:20,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:15:20,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:15:20,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:15:20,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:15:20,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:15:20,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:15:20,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:15:20,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:15:20,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:15:20,410 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:15:20,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:15:20,410 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:15:20,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:15:20,410 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:15:20,410 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:15:20,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:15:20,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:15:20,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:15:20,668 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:15:20,669 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:15:20,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-08-30 10:15:21,937 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:15:22,191 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:15:22,192 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-08-30 10:15:22,220 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f59a34d1f/2296777c22a34a57963c930b38c47811/FLAG532740ebd [2023-08-30 10:15:22,232 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f59a34d1f/2296777c22a34a57963c930b38c47811 [2023-08-30 10:15:22,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:15:22,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:15:22,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:15:22,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:15:22,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:15:22,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:15:22" (1/1) ... [2023-08-30 10:15:22,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30bc2792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:22, skipping insertion in model container [2023-08-30 10:15:22,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:15:22" (1/1) ... [2023-08-30 10:15:22,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:15:22,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:15:22,527 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i[41323,41336] [2023-08-30 10:15:22,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:15:22,579 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:15:22,632 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i[41323,41336] [2023-08-30 10:15:22,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:15:22,683 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:15:22,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:22 WrapperNode [2023-08-30 10:15:22,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:15:22,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:15:22,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:15:22,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:15:22,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:22" (1/1) ... [2023-08-30 10:15:22,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:22" (1/1) ... [2023-08-30 10:15:22,739 INFO L138 Inliner]: procedures = 271, calls = 31, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 213 [2023-08-30 10:15:22,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:15:22,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:15:22,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:15:22,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:15:22,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:22" (1/1) ... [2023-08-30 10:15:22,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:22" (1/1) ... [2023-08-30 10:15:22,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:22" (1/1) ... [2023-08-30 10:15:22,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:22" (1/1) ... [2023-08-30 10:15:22,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:22" (1/1) ... [2023-08-30 10:15:22,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:22" (1/1) ... [2023-08-30 10:15:22,769 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:22" (1/1) ... [2023-08-30 10:15:22,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:22" (1/1) ... [2023-08-30 10:15:22,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:15:22,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:15:22,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:15:22,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:15:22,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:22" (1/1) ... [2023-08-30 10:15:22,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:15:22,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:15:22,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 10:15:22,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 10:15:22,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:15:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:15:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:15:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:15:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:15:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:15:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:15:22,839 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:15:22,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:15:22,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:15:22,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:15:22,841 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 10:15:22,976 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:15:22,978 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:15:23,202 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:15:23,208 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:15:23,209 INFO L302 CfgBuilder]: Removed 25 assume(true) statements. [2023-08-30 10:15:23,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:15:23 BoogieIcfgContainer [2023-08-30 10:15:23,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:15:23,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:15:23,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:15:23,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:15:23,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:15:22" (1/3) ... [2023-08-30 10:15:23,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f9f8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:15:23, skipping insertion in model container [2023-08-30 10:15:23,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:22" (2/3) ... [2023-08-30 10:15:23,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f9f8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:15:23, skipping insertion in model container [2023-08-30 10:15:23,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:15:23" (3/3) ... [2023-08-30 10:15:23,216 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2023-08-30 10:15:23,229 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:15:23,236 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:15:23,236 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-30 10:15:23,236 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:15:23,286 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 10:15:23,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 226 transitions, 460 flow [2023-08-30 10:15:23,417 INFO L130 PetriNetUnfolder]: 49/318 cut-off events. [2023-08-30 10:15:23,417 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:15:23,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 318 events. 49/318 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1228 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 181. Up to 8 conditions per place. [2023-08-30 10:15:23,424 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 226 transitions, 460 flow [2023-08-30 10:15:23,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 223 transitions, 454 flow [2023-08-30 10:15:23,441 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:15:23,452 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 223 transitions, 454 flow [2023-08-30 10:15:23,454 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 223 transitions, 454 flow [2023-08-30 10:15:23,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 223 transitions, 454 flow [2023-08-30 10:15:23,479 INFO L130 PetriNetUnfolder]: 48/315 cut-off events. [2023-08-30 10:15:23,480 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:15:23,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 315 events. 48/315 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1213 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 181. Up to 8 conditions per place. [2023-08-30 10:15:23,486 INFO L119 LiptonReduction]: Number of co-enabled transitions 16320 [2023-08-30 10:15:26,232 INFO L134 LiptonReduction]: Checked pairs total: 26760 [2023-08-30 10:15:26,232 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-08-30 10:15:26,242 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:15:26,246 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;@76519a57, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:15:26,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-30 10:15:26,248 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 10:15:26,248 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:15:26,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:26,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:15:26,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:26,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:26,251 INFO L85 PathProgramCache]: Analyzing trace with hash 28676, now seen corresponding path program 1 times [2023-08-30 10:15:26,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:26,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814604753] [2023-08-30 10:15:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:26,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:26,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:26,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814604753] [2023-08-30 10:15:26,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814604753] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:26,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:15:26,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:15:26,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944558545] [2023-08-30 10:15:26,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:26,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:15:26,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:26,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:15:26,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:15:26,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 425 [2023-08-30 10:15:26,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 88 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:26,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:26,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 425 [2023-08-30 10:15:26,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:26,623 INFO L130 PetriNetUnfolder]: 598/1258 cut-off events. [2023-08-30 10:15:26,623 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:15:26,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2396 conditions, 1258 events. 598/1258 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7375 event pairs, 504 based on Foata normal form. 165/1009 useless extension candidates. Maximal degree in co-relation 2321. Up to 1131 conditions per place. [2023-08-30 10:15:26,629 INFO L137 encePairwiseOnDemand]: 398/425 looper letters, 54 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-30 10:15:26,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 66 transitions, 252 flow [2023-08-30 10:15:26,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:15:26,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:15:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2023-08-30 10:15:26,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137254901960784 [2023-08-30 10:15:26,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 655 transitions. [2023-08-30 10:15:26,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 655 transitions. [2023-08-30 10:15:26,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:26,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 655 transitions. [2023-08-30 10:15:26,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:26,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:26,650 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:26,651 INFO L175 Difference]: Start difference. First operand has 65 places, 88 transitions, 184 flow. Second operand 3 states and 655 transitions. [2023-08-30 10:15:26,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 66 transitions, 252 flow [2023-08-30 10:15:26,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:15:26,654 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 152 flow [2023-08-30 10:15:26,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-08-30 10:15:26,658 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 1 predicate places. [2023-08-30 10:15:26,658 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 152 flow [2023-08-30 10:15:26,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:26,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:26,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:15:26,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:15:26,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:26,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:26,660 INFO L85 PathProgramCache]: Analyzing trace with hash 891375, now seen corresponding path program 1 times [2023-08-30 10:15:26,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:26,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004798435] [2023-08-30 10:15:26,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:26,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:26,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:26,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004798435] [2023-08-30 10:15:26,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004798435] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:15:26,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099743543] [2023-08-30 10:15:26,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:26,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:15:26,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:15:26,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:15:26,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 10:15:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:26,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:15:26,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:15:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:26,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:15:26,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099743543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:26,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:15:26,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 10:15:26,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220570960] [2023-08-30 10:15:26,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:26,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:15:26,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:26,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:15:26,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:15:26,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 425 [2023-08-30 10:15:26,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:26,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:26,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 425 [2023-08-30 10:15:26,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:27,037 INFO L130 PetriNetUnfolder]: 598/1257 cut-off events. [2023-08-30 10:15:27,038 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:15:27,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2401 conditions, 1257 events. 598/1257 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7356 event pairs, 504 based on Foata normal form. 0/844 useless extension candidates. Maximal degree in co-relation 2389. Up to 1129 conditions per place. [2023-08-30 10:15:27,043 INFO L137 encePairwiseOnDemand]: 422/425 looper letters, 53 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-30 10:15:27,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 65 transitions, 258 flow [2023-08-30 10:15:27,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:15:27,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:15:27,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 820 transitions. [2023-08-30 10:15:27,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2023-08-30 10:15:27,056 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 820 transitions. [2023-08-30 10:15:27,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 820 transitions. [2023-08-30 10:15:27,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:27,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 820 transitions. [2023-08-30 10:15:27,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:27,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:27,065 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:27,065 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 152 flow. Second operand 4 states and 820 transitions. [2023-08-30 10:15:27,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 65 transitions, 258 flow [2023-08-30 10:15:27,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 254 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:15:27,068 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 148 flow [2023-08-30 10:15:27,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-08-30 10:15:27,069 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2023-08-30 10:15:27,069 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 148 flow [2023-08-30 10:15:27,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:27,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:27,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 10:15:27,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 10:15:27,273 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 [2023-08-30 10:15:27,273 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:27,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:27,274 INFO L85 PathProgramCache]: Analyzing trace with hash 786466763, now seen corresponding path program 1 times [2023-08-30 10:15:27,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:27,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858358212] [2023-08-30 10:15:27,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:27,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:27,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:27,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858358212] [2023-08-30 10:15:27,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858358212] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:15:27,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541335432] [2023-08-30 10:15:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:27,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:15:27,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:15:27,306 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:15:27,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 10:15:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:27,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:15:27,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:15:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:27,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:15:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:27,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541335432] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:15:27,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:15:27,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:15:27,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083907553] [2023-08-30 10:15:27,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:15:27,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:15:27,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:27,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:15:27,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:15:27,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 425 [2023-08-30 10:15:27,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 191.57142857142858) internal successors, (1341), 7 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:27,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:27,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 425 [2023-08-30 10:15:27,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:27,522 INFO L130 PetriNetUnfolder]: 598/1260 cut-off events. [2023-08-30 10:15:27,522 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:15:27,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2410 conditions, 1260 events. 598/1260 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7391 event pairs, 504 based on Foata normal form. 0/847 useless extension candidates. Maximal degree in co-relation 2398. Up to 1130 conditions per place. [2023-08-30 10:15:27,526 INFO L137 encePairwiseOnDemand]: 422/425 looper letters, 53 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2023-08-30 10:15:27,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 276 flow [2023-08-30 10:15:27,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:15:27,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:15:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1201 transitions. [2023-08-30 10:15:27,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47098039215686277 [2023-08-30 10:15:27,529 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1201 transitions. [2023-08-30 10:15:27,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1201 transitions. [2023-08-30 10:15:27,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:27,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1201 transitions. [2023-08-30 10:15:27,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 200.16666666666666) internal successors, (1201), 6 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:27,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:27,535 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:27,536 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 148 flow. Second operand 6 states and 1201 transitions. [2023-08-30 10:15:27,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 276 flow [2023-08-30 10:15:27,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 273 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:15:27,538 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 181 flow [2023-08-30 10:15:27,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2023-08-30 10:15:27,540 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2023-08-30 10:15:27,540 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 181 flow [2023-08-30 10:15:27,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 191.57142857142858) internal successors, (1341), 7 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:27,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:27,541 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 10:15:27,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 10:15:27,745 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 [2023-08-30 10:15:27,748 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:27,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:27,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1475681578, now seen corresponding path program 2 times [2023-08-30 10:15:27,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:27,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915404233] [2023-08-30 10:15:27,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:27,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:15:27,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:27,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915404233] [2023-08-30 10:15:27,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915404233] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:27,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:15:27,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:15:27,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073466169] [2023-08-30 10:15:27,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:27,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:15:27,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:27,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:15:27,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:15:27,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 425 [2023-08-30 10:15:27,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:27,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:27,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 425 [2023-08-30 10:15:27,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:27,919 INFO L130 PetriNetUnfolder]: 552/1169 cut-off events. [2023-08-30 10:15:27,919 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:15:27,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2238 conditions, 1169 events. 552/1169 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6988 event pairs, 210 based on Foata normal form. 0/827 useless extension candidates. Maximal degree in co-relation 2222. Up to 1000 conditions per place. [2023-08-30 10:15:27,924 INFO L137 encePairwiseOnDemand]: 420/425 looper letters, 77 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2023-08-30 10:15:27,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 89 transitions, 381 flow [2023-08-30 10:15:27,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:15:27,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:15:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 651 transitions. [2023-08-30 10:15:27,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105882352941177 [2023-08-30 10:15:27,926 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 651 transitions. [2023-08-30 10:15:27,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 651 transitions. [2023-08-30 10:15:27,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:27,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 651 transitions. [2023-08-30 10:15:27,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:27,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:27,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:27,930 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 181 flow. Second operand 3 states and 651 transitions. [2023-08-30 10:15:27,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 89 transitions, 381 flow [2023-08-30 10:15:27,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 89 transitions, 367 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:15:27,935 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 171 flow [2023-08-30 10:15:27,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2023-08-30 10:15:27,936 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2023-08-30 10:15:27,936 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 171 flow [2023-08-30 10:15:27,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:27,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:27,937 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:27,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 10:15:27,937 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:27,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:27,938 INFO L85 PathProgramCache]: Analyzing trace with hash 262318559, now seen corresponding path program 1 times [2023-08-30 10:15:27,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:27,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363155201] [2023-08-30 10:15:27,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:27,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:28,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:28,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363155201] [2023-08-30 10:15:28,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363155201] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:15:28,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269693531] [2023-08-30 10:15:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:28,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:15:28,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:15:28,060 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:15:28,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 10:15:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:28,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:15:28,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:15:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:28,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:15:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:28,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269693531] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:15:28,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:15:28,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:15:28,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429307544] [2023-08-30 10:15:28,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:15:28,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:15:28,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:28,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:15:28,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:15:28,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 425 [2023-08-30 10:15:28,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 171 flow. Second operand has 13 states, 13 states have (on average 191.53846153846155) internal successors, (2490), 13 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:28,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:28,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 425 [2023-08-30 10:15:28,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:28,423 INFO L130 PetriNetUnfolder]: 552/1157 cut-off events. [2023-08-30 10:15:28,424 INFO L131 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2023-08-30 10:15:28,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2292 conditions, 1157 events. 552/1157 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6527 event pairs, 462 based on Foata normal form. 6/840 useless extension candidates. Maximal degree in co-relation 2275. Up to 1021 conditions per place. [2023-08-30 10:15:28,428 INFO L137 encePairwiseOnDemand]: 422/425 looper letters, 51 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2023-08-30 10:15:28,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 72 transitions, 331 flow [2023-08-30 10:15:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:15:28,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:15:28,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2348 transitions. [2023-08-30 10:15:28,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603921568627451 [2023-08-30 10:15:28,432 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2348 transitions. [2023-08-30 10:15:28,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2348 transitions. [2023-08-30 10:15:28,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:28,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2348 transitions. [2023-08-30 10:15:28,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 195.66666666666666) internal successors, (2348), 12 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:28,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 425.0) internal successors, (5525), 13 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:28,442 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 425.0) internal successors, (5525), 13 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:28,442 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 171 flow. Second operand 12 states and 2348 transitions. [2023-08-30 10:15:28,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 72 transitions, 331 flow [2023-08-30 10:15:28,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 72 transitions, 327 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:15:28,445 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 251 flow [2023-08-30 10:15:28,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=251, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2023-08-30 10:15:28,445 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 23 predicate places. [2023-08-30 10:15:28,445 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 251 flow [2023-08-30 10:15:28,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 191.53846153846155) internal successors, (2490), 13 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:28,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:28,446 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:28,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 10:15:28,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:15:28,652 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:28,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:28,652 INFO L85 PathProgramCache]: Analyzing trace with hash -197940712, now seen corresponding path program 1 times [2023-08-30 10:15:28,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:28,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62187181] [2023-08-30 10:15:28,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:28,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:28,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:28,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62187181] [2023-08-30 10:15:28,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62187181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:28,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:15:28,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:15:28,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988665181] [2023-08-30 10:15:28,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:28,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:15:28,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:28,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:15:28,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:15:28,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 425 [2023-08-30 10:15:28,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 183.5) internal successors, (1101), 6 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:28,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:28,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 425 [2023-08-30 10:15:28,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:29,283 INFO L130 PetriNetUnfolder]: 957/2030 cut-off events. [2023-08-30 10:15:29,284 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-08-30 10:15:29,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4052 conditions, 2030 events. 957/2030 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 12826 event pairs, 100 based on Foata normal form. 0/1441 useless extension candidates. Maximal degree in co-relation 4027. Up to 1036 conditions per place. [2023-08-30 10:15:29,290 INFO L137 encePairwiseOnDemand]: 415/425 looper letters, 150 selfloop transitions, 14 changer transitions 0/174 dead transitions. [2023-08-30 10:15:29,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 174 transitions, 801 flow [2023-08-30 10:15:29,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:15:29,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:15:29,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1248 transitions. [2023-08-30 10:15:29,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894117647058824 [2023-08-30 10:15:29,293 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1248 transitions. [2023-08-30 10:15:29,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1248 transitions. [2023-08-30 10:15:29,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:29,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1248 transitions. [2023-08-30 10:15:29,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:29,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:29,298 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:29,298 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 251 flow. Second operand 6 states and 1248 transitions. [2023-08-30 10:15:29,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 174 transitions, 801 flow [2023-08-30 10:15:29,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 174 transitions, 753 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 10:15:29,301 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 291 flow [2023-08-30 10:15:29,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2023-08-30 10:15:29,302 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 26 predicate places. [2023-08-30 10:15:29,302 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 291 flow [2023-08-30 10:15:29,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.5) internal successors, (1101), 6 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:29,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:29,303 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:29,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:15:29,303 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:29,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:29,303 INFO L85 PathProgramCache]: Analyzing trace with hash 988706490, now seen corresponding path program 1 times [2023-08-30 10:15:29,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:29,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174998645] [2023-08-30 10:15:29,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:29,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:29,365 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:29,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:29,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174998645] [2023-08-30 10:15:29,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174998645] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:15:29,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767946432] [2023-08-30 10:15:29,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:29,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:15:29,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:15:29,379 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) [2023-08-30 10:15:29,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 10:15:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:29,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-30 10:15:29,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:15:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:29,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:15:29,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767946432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:29,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:15:29,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-30 10:15:29,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379781620] [2023-08-30 10:15:29,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:29,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:15:29,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:29,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:15:29,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:15:29,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 425 [2023-08-30 10:15:29,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:29,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:29,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 425 [2023-08-30 10:15:29,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:29,785 INFO L130 PetriNetUnfolder]: 1609/3361 cut-off events. [2023-08-30 10:15:29,785 INFO L131 PetriNetUnfolder]: For 651/653 co-relation queries the response was YES. [2023-08-30 10:15:29,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7310 conditions, 3361 events. 1609/3361 cut-off events. For 651/653 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 23731 event pairs, 836 based on Foata normal form. 35/2582 useless extension candidates. Maximal degree in co-relation 7283. Up to 1685 conditions per place. [2023-08-30 10:15:29,799 INFO L137 encePairwiseOnDemand]: 420/425 looper letters, 124 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2023-08-30 10:15:29,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 137 transitions, 710 flow [2023-08-30 10:15:29,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:15:29,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:15:29,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions. [2023-08-30 10:15:29,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5247058823529411 [2023-08-30 10:15:29,801 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions. [2023-08-30 10:15:29,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions. [2023-08-30 10:15:29,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:29,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions. [2023-08-30 10:15:29,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:29,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:29,805 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:29,805 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 291 flow. Second operand 3 states and 669 transitions. [2023-08-30 10:15:29,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 137 transitions, 710 flow [2023-08-30 10:15:29,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 137 transitions, 708 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:15:29,808 INFO L231 Difference]: Finished difference. Result has 94 places, 86 transitions, 313 flow [2023-08-30 10:15:29,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=94, PETRI_TRANSITIONS=86} [2023-08-30 10:15:29,809 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 29 predicate places. [2023-08-30 10:15:29,809 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 86 transitions, 313 flow [2023-08-30 10:15:29,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:29,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:29,809 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:29,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 10:15:30,014 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 [2023-08-30 10:15:30,014 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:30,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:30,015 INFO L85 PathProgramCache]: Analyzing trace with hash -187582058, now seen corresponding path program 1 times [2023-08-30 10:15:30,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:30,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452050705] [2023-08-30 10:15:30,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:30,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:30,060 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:30,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:30,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452050705] [2023-08-30 10:15:30,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452050705] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:15:30,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726439646] [2023-08-30 10:15:30,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:30,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:15:30,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:15:30,062 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) [2023-08-30 10:15:30,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 10:15:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:30,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:15:30,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:15:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:30,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:15:30,165 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:30,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726439646] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:15:30,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:15:30,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 10:15:30,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260295761] [2023-08-30 10:15:30,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:15:30,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:15:30,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:30,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:15:30,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:15:30,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 425 [2023-08-30 10:15:30,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 86 transitions, 313 flow. Second operand has 7 states, 7 states have (on average 192.71428571428572) internal successors, (1349), 7 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:30,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:30,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 425 [2023-08-30 10:15:30,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:30,258 INFO L130 PetriNetUnfolder]: 132/391 cut-off events. [2023-08-30 10:15:30,258 INFO L131 PetriNetUnfolder]: For 254/261 co-relation queries the response was YES. [2023-08-30 10:15:30,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 391 events. 132/391 cut-off events. For 254/261 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1756 event pairs, 24 based on Foata normal form. 58/413 useless extension candidates. Maximal degree in co-relation 1095. Up to 262 conditions per place. [2023-08-30 10:15:30,260 INFO L137 encePairwiseOnDemand]: 422/425 looper letters, 73 selfloop transitions, 2 changer transitions 2/82 dead transitions. [2023-08-30 10:15:30,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 487 flow [2023-08-30 10:15:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:15:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:15:30,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 812 transitions. [2023-08-30 10:15:30,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4776470588235294 [2023-08-30 10:15:30,262 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 812 transitions. [2023-08-30 10:15:30,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 812 transitions. [2023-08-30 10:15:30,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:30,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 812 transitions. [2023-08-30 10:15:30,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:30,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:30,266 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:30,266 INFO L175 Difference]: Start difference. First operand has 94 places, 86 transitions, 313 flow. Second operand 4 states and 812 transitions. [2023-08-30 10:15:30,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 487 flow [2023-08-30 10:15:30,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 82 transitions, 473 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:15:30,268 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 218 flow [2023-08-30 10:15:30,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2023-08-30 10:15:30,269 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2023-08-30 10:15:30,269 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 218 flow [2023-08-30 10:15:30,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 192.71428571428572) internal successors, (1349), 7 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:30,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:30,270 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:30,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 10:15:30,474 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 [2023-08-30 10:15:30,474 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:30,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:30,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1005792063, now seen corresponding path program 1 times [2023-08-30 10:15:30,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:30,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943114379] [2023-08-30 10:15:30,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:30,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:30,619 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:30,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:30,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943114379] [2023-08-30 10:15:30,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943114379] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:15:30,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255840257] [2023-08-30 10:15:30,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:30,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:15:30,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:15:30,621 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) [2023-08-30 10:15:30,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 10:15:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:30,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 10:15:30,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:15:30,716 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 7 treesize of output 6 [2023-08-30 10:15:30,764 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:15:30,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-30 10:15:30,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:15:30,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:15:30,825 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:30,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:15:30,948 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:30,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255840257] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:15:30,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:15:30,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-30 10:15:30,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789035244] [2023-08-30 10:15:30,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:15:30,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:15:30,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:30,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:15:30,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=116, Unknown=4, NotChecked=0, Total=156 [2023-08-30 10:15:31,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 425 [2023-08-30 10:15:31,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 218 flow. Second operand has 13 states, 13 states have (on average 169.3846153846154) internal successors, (2202), 13 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:31,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:31,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 425 [2023-08-30 10:15:31,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:31,491 INFO L130 PetriNetUnfolder]: 126/361 cut-off events. [2023-08-30 10:15:31,492 INFO L131 PetriNetUnfolder]: For 267/269 co-relation queries the response was YES. [2023-08-30 10:15:31,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 361 events. 126/361 cut-off events. For 267/269 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1387 event pairs, 17 based on Foata normal form. 2/314 useless extension candidates. Maximal degree in co-relation 985. Up to 152 conditions per place. [2023-08-30 10:15:31,493 INFO L137 encePairwiseOnDemand]: 417/425 looper letters, 61 selfloop transitions, 8 changer transitions 0/74 dead transitions. [2023-08-30 10:15:31,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 74 transitions, 434 flow [2023-08-30 10:15:31,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:15:31,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:15:31,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1056 transitions. [2023-08-30 10:15:31,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41411764705882353 [2023-08-30 10:15:31,496 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1056 transitions. [2023-08-30 10:15:31,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1056 transitions. [2023-08-30 10:15:31,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:31,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1056 transitions. [2023-08-30 10:15:31,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:31,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:31,501 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:31,501 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 218 flow. Second operand 6 states and 1056 transitions. [2023-08-30 10:15:31,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 74 transitions, 434 flow [2023-08-30 10:15:31,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 74 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:15:31,517 INFO L231 Difference]: Finished difference. Result has 71 places, 53 transitions, 248 flow [2023-08-30 10:15:31,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=71, PETRI_TRANSITIONS=53} [2023-08-30 10:15:31,518 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 6 predicate places. [2023-08-30 10:15:31,518 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 53 transitions, 248 flow [2023-08-30 10:15:31,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 169.3846153846154) internal successors, (2202), 13 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:31,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:31,519 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:31,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 10:15:31,723 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 [2023-08-30 10:15:31,723 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:31,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:31,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1122667219, now seen corresponding path program 1 times [2023-08-30 10:15:31,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:31,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082031834] [2023-08-30 10:15:31,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:31,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:31,773 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:31,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:31,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082031834] [2023-08-30 10:15:31,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082031834] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:31,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:15:31,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:15:31,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897369639] [2023-08-30 10:15:31,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:31,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:15:31,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:31,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:15:31,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:15:31,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 425 [2023-08-30 10:15:31,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 53 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:31,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:31,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 425 [2023-08-30 10:15:31,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:31,839 INFO L130 PetriNetUnfolder]: 119/354 cut-off events. [2023-08-30 10:15:31,840 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-30 10:15:31,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 354 events. 119/354 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1377 event pairs, 67 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 1003. Up to 219 conditions per place. [2023-08-30 10:15:31,841 INFO L137 encePairwiseOnDemand]: 422/425 looper letters, 64 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-30 10:15:31,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 71 transitions, 441 flow [2023-08-30 10:15:31,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:15:31,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:15:31,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-30 10:15:31,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48549019607843136 [2023-08-30 10:15:31,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-30 10:15:31,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-30 10:15:31,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:31,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-30 10:15:31,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:31,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:31,857 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:31,858 INFO L175 Difference]: Start difference. First operand has 71 places, 53 transitions, 248 flow. Second operand 3 states and 619 transitions. [2023-08-30 10:15:31,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 71 transitions, 441 flow [2023-08-30 10:15:31,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 428 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:15:31,860 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 237 flow [2023-08-30 10:15:31,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-08-30 10:15:31,862 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 5 predicate places. [2023-08-30 10:15:31,862 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 237 flow [2023-08-30 10:15:31,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:31,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:31,862 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:31,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 10:15:31,863 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:31,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:31,863 INFO L85 PathProgramCache]: Analyzing trace with hash 16850444, now seen corresponding path program 1 times [2023-08-30 10:15:31,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:31,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008659229] [2023-08-30 10:15:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:31,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:31,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:31,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008659229] [2023-08-30 10:15:31,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008659229] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:31,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:15:31,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:15:31,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018312832] [2023-08-30 10:15:31,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:31,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:15:31,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:31,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:15:31,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:15:31,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 425 [2023-08-30 10:15:31,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 186.25) internal successors, (745), 4 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:31,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:31,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 425 [2023-08-30 10:15:31,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:32,051 INFO L130 PetriNetUnfolder]: 114/393 cut-off events. [2023-08-30 10:15:32,051 INFO L131 PetriNetUnfolder]: For 259/259 co-relation queries the response was YES. [2023-08-30 10:15:32,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 393 events. 114/393 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1772 event pairs, 26 based on Foata normal form. 0/353 useless extension candidates. Maximal degree in co-relation 1081. Up to 153 conditions per place. [2023-08-30 10:15:32,053 INFO L137 encePairwiseOnDemand]: 415/425 looper letters, 49 selfloop transitions, 18 changer transitions 0/72 dead transitions. [2023-08-30 10:15:32,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 450 flow [2023-08-30 10:15:32,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:15:32,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:15:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 959 transitions. [2023-08-30 10:15:32,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45129411764705885 [2023-08-30 10:15:32,056 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 959 transitions. [2023-08-30 10:15:32,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 959 transitions. [2023-08-30 10:15:32,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:32,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 959 transitions. [2023-08-30 10:15:32,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 191.8) internal successors, (959), 5 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:32,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 425.0) internal successors, (2550), 6 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:32,060 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 425.0) internal successors, (2550), 6 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:32,060 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 237 flow. Second operand 5 states and 959 transitions. [2023-08-30 10:15:32,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 450 flow [2023-08-30 10:15:32,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 72 transitions, 442 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:15:32,062 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 360 flow [2023-08-30 10:15:32,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2023-08-30 10:15:32,063 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 10 predicate places. [2023-08-30 10:15:32,063 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 360 flow [2023-08-30 10:15:32,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.25) internal successors, (745), 4 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:32,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:32,063 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:32,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 10:15:32,064 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:32,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:32,064 INFO L85 PathProgramCache]: Analyzing trace with hash 16850406, now seen corresponding path program 1 times [2023-08-30 10:15:32,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:32,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394357901] [2023-08-30 10:15:32,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:32,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:32,233 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:32,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:32,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394357901] [2023-08-30 10:15:32,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394357901] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:32,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:15:32,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:15:32,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428337461] [2023-08-30 10:15:32,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:32,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:15:32,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:32,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:15:32,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:15:32,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 425 [2023-08-30 10:15:32,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 360 flow. Second operand has 8 states, 8 states have (on average 179.625) internal successors, (1437), 8 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:32,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:32,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 425 [2023-08-30 10:15:32,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:32,596 INFO L130 PetriNetUnfolder]: 118/413 cut-off events. [2023-08-30 10:15:32,596 INFO L131 PetriNetUnfolder]: For 613/621 co-relation queries the response was YES. [2023-08-30 10:15:32,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337 conditions, 413 events. 118/413 cut-off events. For 613/621 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1885 event pairs, 9 based on Foata normal form. 10/388 useless extension candidates. Maximal degree in co-relation 1306. Up to 143 conditions per place. [2023-08-30 10:15:32,598 INFO L137 encePairwiseOnDemand]: 413/425 looper letters, 74 selfloop transitions, 23 changer transitions 0/102 dead transitions. [2023-08-30 10:15:32,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 102 transitions, 709 flow [2023-08-30 10:15:32,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 10:15:32,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 10:15:32,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2033 transitions. [2023-08-30 10:15:32,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348663101604278 [2023-08-30 10:15:32,602 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2033 transitions. [2023-08-30 10:15:32,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2033 transitions. [2023-08-30 10:15:32,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:32,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2033 transitions. [2023-08-30 10:15:32,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 184.8181818181818) internal successors, (2033), 11 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:32,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 425.0) internal successors, (5100), 12 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:32,610 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 425.0) internal successors, (5100), 12 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:32,611 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 360 flow. Second operand 11 states and 2033 transitions. [2023-08-30 10:15:32,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 102 transitions, 709 flow [2023-08-30 10:15:32,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 102 transitions, 701 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 10:15:32,615 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 481 flow [2023-08-30 10:15:32,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=481, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2023-08-30 10:15:32,616 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 24 predicate places. [2023-08-30 10:15:32,616 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 481 flow [2023-08-30 10:15:32,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 179.625) internal successors, (1437), 8 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:32,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:32,616 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:32,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 10:15:32,617 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:32,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:32,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1004799729, now seen corresponding path program 1 times [2023-08-30 10:15:32,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:32,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294206004] [2023-08-30 10:15:32,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:32,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:32,813 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:32,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:32,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294206004] [2023-08-30 10:15:32,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294206004] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:15:32,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454549631] [2023-08-30 10:15:32,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:32,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:15:32,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:15:32,830 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) [2023-08-30 10:15:32,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 10:15:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:32,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 10:15:32,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:15:32,920 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 7 treesize of output 6 [2023-08-30 10:15:32,966 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:15:32,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-30 10:15:32,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:15:33,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2023-08-30 10:15:33,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:15:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:33,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:15:33,156 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_458 (Array Int Int)) (v_ArrVal_457 Int)) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (select |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_457)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_458) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)) (< v_ArrVal_457 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_#t~post35#1| 1)))) is different from false [2023-08-30 10:15:33,169 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_458 (Array Int Int)) (|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_457 Int)) (let ((.cse0 (select |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (or (< v_ArrVal_457 (+ (select .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_457)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_458) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))))) is different from false [2023-08-30 10:15:33,195 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_458 (Array Int Int)) (|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_457 Int)) (let ((.cse0 (select |c_#memory_int| |c_~#cache~0.base|))) (or (< v_ArrVal_457 (+ (select .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#cache~0.base| (store .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_457)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_458) |c_~#cache~0.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))))) is different from false [2023-08-30 10:15:33,234 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_458 (Array Int Int)) (|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_455 (Array Int Int)) (v_ArrVal_457 Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_455))) (let ((.cse0 (select .cse1 |c_~#cache~0.base|))) (or (< v_ArrVal_457 (+ (select .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store .cse1 |c_~#cache~0.base| (store .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_457)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_458) |c_~#cache~0.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)))))) is different from false [2023-08-30 10:15:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:15:33,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454549631] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:15:33,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:15:33,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 18 [2023-08-30 10:15:33,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22489705] [2023-08-30 10:15:33,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:15:33,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 10:15:33,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:33,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 10:15:33,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=187, Unknown=7, NotChecked=124, Total=380 [2023-08-30 10:15:33,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 425 [2023-08-30 10:15:33,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 481 flow. Second operand has 20 states, 20 states have (on average 154.15) internal successors, (3083), 20 states have internal predecessors, (3083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:33,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:33,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 425 [2023-08-30 10:15:33,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:33,724 INFO L130 PetriNetUnfolder]: 126/430 cut-off events. [2023-08-30 10:15:33,724 INFO L131 PetriNetUnfolder]: For 986/996 co-relation queries the response was YES. [2023-08-30 10:15:33,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 430 events. 126/430 cut-off events. For 986/996 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1949 event pairs, 22 based on Foata normal form. 6/400 useless extension candidates. Maximal degree in co-relation 1541. Up to 138 conditions per place. [2023-08-30 10:15:33,726 INFO L137 encePairwiseOnDemand]: 412/425 looper letters, 78 selfloop transitions, 23 changer transitions 0/105 dead transitions. [2023-08-30 10:15:33,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 105 transitions, 826 flow [2023-08-30 10:15:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 10:15:33,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 10:15:33,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1747 transitions. [2023-08-30 10:15:33,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37368983957219254 [2023-08-30 10:15:33,729 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1747 transitions. [2023-08-30 10:15:33,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1747 transitions. [2023-08-30 10:15:33,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:33,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1747 transitions. [2023-08-30 10:15:33,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 158.8181818181818) internal successors, (1747), 11 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:33,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 425.0) internal successors, (5100), 12 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:33,757 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 425.0) internal successors, (5100), 12 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:33,757 INFO L175 Difference]: Start difference. First operand has 89 places, 69 transitions, 481 flow. Second operand 11 states and 1747 transitions. [2023-08-30 10:15:33,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 105 transitions, 826 flow [2023-08-30 10:15:33,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 105 transitions, 799 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-30 10:15:33,762 INFO L231 Difference]: Finished difference. Result has 101 places, 77 transitions, 598 flow [2023-08-30 10:15:33,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=598, PETRI_PLACES=101, PETRI_TRANSITIONS=77} [2023-08-30 10:15:33,762 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 36 predicate places. [2023-08-30 10:15:33,762 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 77 transitions, 598 flow [2023-08-30 10:15:33,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 154.15) internal successors, (3083), 20 states have internal predecessors, (3083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:33,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:33,763 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:33,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 10:15:33,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:15:33,969 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:33,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:33,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1004799691, now seen corresponding path program 1 times [2023-08-30 10:15:33,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:33,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003118140] [2023-08-30 10:15:33,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:33,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:34,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:34,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003118140] [2023-08-30 10:15:34,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003118140] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:15:34,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373089950] [2023-08-30 10:15:34,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:34,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:15:34,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:15:34,184 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) [2023-08-30 10:15:34,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 10:15:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:34,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:15:34,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:15:34,341 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:15:34,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-30 10:15:34,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:15:34,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:15:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:34,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:15:34,463 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_535 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_535) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483649)) is different from false [2023-08-30 10:15:34,472 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:15:34,472 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 18 treesize of output 19 [2023-08-30 10:15:34,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2023-08-30 10:15:34,555 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:15:34,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373089950] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:15:34,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:15:34,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-30 10:15:34,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155487272] [2023-08-30 10:15:34,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:15:34,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 10:15:34,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:34,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 10:15:34,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=279, Unknown=1, NotChecked=34, Total=380 [2023-08-30 10:15:34,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 425 [2023-08-30 10:15:34,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 77 transitions, 598 flow. Second operand has 20 states, 20 states have (on average 154.25) internal successors, (3085), 20 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:34,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:34,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 425 [2023-08-30 10:15:34,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:34,985 INFO L130 PetriNetUnfolder]: 126/426 cut-off events. [2023-08-30 10:15:34,985 INFO L131 PetriNetUnfolder]: For 1319/1337 co-relation queries the response was YES. [2023-08-30 10:15:34,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1718 conditions, 426 events. 126/426 cut-off events. For 1319/1337 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1894 event pairs, 33 based on Foata normal form. 5/405 useless extension candidates. Maximal degree in co-relation 1675. Up to 109 conditions per place. [2023-08-30 10:15:34,988 INFO L137 encePairwiseOnDemand]: 414/425 looper letters, 74 selfloop transitions, 26 changer transitions 0/104 dead transitions. [2023-08-30 10:15:34,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 104 transitions, 917 flow [2023-08-30 10:15:34,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:15:34,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:15:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1891 transitions. [2023-08-30 10:15:34,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707843137254902 [2023-08-30 10:15:34,992 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1891 transitions. [2023-08-30 10:15:34,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1891 transitions. [2023-08-30 10:15:34,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:34,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1891 transitions. [2023-08-30 10:15:34,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 157.58333333333334) internal successors, (1891), 12 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:34,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 425.0) internal successors, (5525), 13 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:35,000 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 425.0) internal successors, (5525), 13 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:35,000 INFO L175 Difference]: Start difference. First operand has 101 places, 77 transitions, 598 flow. Second operand 12 states and 1891 transitions. [2023-08-30 10:15:35,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 104 transitions, 917 flow [2023-08-30 10:15:35,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 104 transitions, 879 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-30 10:15:35,006 INFO L231 Difference]: Finished difference. Result has 106 places, 78 transitions, 627 flow [2023-08-30 10:15:35,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=627, PETRI_PLACES=106, PETRI_TRANSITIONS=78} [2023-08-30 10:15:35,007 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 41 predicate places. [2023-08-30 10:15:35,007 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 78 transitions, 627 flow [2023-08-30 10:15:35,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 154.25) internal successors, (3085), 20 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:35,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:35,007 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:35,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 10:15:35,212 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,SelfDestructingSolverStorable13 [2023-08-30 10:15:35,213 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:35,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:35,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1600264608, now seen corresponding path program 1 times [2023-08-30 10:15:35,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:35,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291109246] [2023-08-30 10:15:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:35,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:35,282 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:35,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:35,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291109246] [2023-08-30 10:15:35,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291109246] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:15:35,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271256640] [2023-08-30 10:15:35,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:35,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:15:35,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:15:35,300 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) [2023-08-30 10:15:35,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 10:15:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:35,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:15:35,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:15:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:35,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:15:35,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271256640] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:35,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:15:35,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 10:15:35,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058945209] [2023-08-30 10:15:35,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:35,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:15:35,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:35,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:15:35,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:15:35,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 425 [2023-08-30 10:15:35,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 78 transitions, 627 flow. Second operand has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:35,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:35,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 425 [2023-08-30 10:15:35,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:35,491 INFO L130 PetriNetUnfolder]: 114/401 cut-off events. [2023-08-30 10:15:35,491 INFO L131 PetriNetUnfolder]: For 1309/1328 co-relation queries the response was YES. [2023-08-30 10:15:35,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 401 events. 114/401 cut-off events. For 1309/1328 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1769 event pairs, 23 based on Foata normal form. 4/392 useless extension candidates. Maximal degree in co-relation 1600. Up to 217 conditions per place. [2023-08-30 10:15:35,493 INFO L137 encePairwiseOnDemand]: 422/425 looper letters, 100 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-30 10:15:35,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 107 transitions, 1093 flow [2023-08-30 10:15:35,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:15:35,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:15:35,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 808 transitions. [2023-08-30 10:15:35,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4752941176470588 [2023-08-30 10:15:35,495 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 808 transitions. [2023-08-30 10:15:35,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 808 transitions. [2023-08-30 10:15:35,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:35,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 808 transitions. [2023-08-30 10:15:35,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:35,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:35,511 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:35,511 INFO L175 Difference]: Start difference. First operand has 106 places, 78 transitions, 627 flow. Second operand 4 states and 808 transitions. [2023-08-30 10:15:35,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 107 transitions, 1093 flow [2023-08-30 10:15:35,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 107 transitions, 1034 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-08-30 10:15:35,516 INFO L231 Difference]: Finished difference. Result has 100 places, 77 transitions, 586 flow [2023-08-30 10:15:35,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=586, PETRI_PLACES=100, PETRI_TRANSITIONS=77} [2023-08-30 10:15:35,517 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 35 predicate places. [2023-08-30 10:15:35,517 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 77 transitions, 586 flow [2023-08-30 10:15:35,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:35,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:35,517 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:35,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 10:15:35,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 10:15:35,722 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:35,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:35,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1600264682, now seen corresponding path program 1 times [2023-08-30 10:15:35,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:35,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669904256] [2023-08-30 10:15:35,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:35,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:15:35,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:35,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669904256] [2023-08-30 10:15:35,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669904256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:35,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:15:35,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:15:35,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147442422] [2023-08-30 10:15:35,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:35,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:15:35,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:35,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:15:35,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:15:35,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 425 [2023-08-30 10:15:35,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 77 transitions, 586 flow. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:35,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:35,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 425 [2023-08-30 10:15:35,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:35,822 INFO L130 PetriNetUnfolder]: 108/383 cut-off events. [2023-08-30 10:15:35,823 INFO L131 PetriNetUnfolder]: For 1100/1127 co-relation queries the response was YES. [2023-08-30 10:15:35,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1542 conditions, 383 events. 108/383 cut-off events. For 1100/1127 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1661 event pairs, 22 based on Foata normal form. 7/388 useless extension candidates. Maximal degree in co-relation 1503. Up to 270 conditions per place. [2023-08-30 10:15:35,829 INFO L137 encePairwiseOnDemand]: 421/425 looper letters, 67 selfloop transitions, 9 changer transitions 0/81 dead transitions. [2023-08-30 10:15:35,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 81 transitions, 782 flow [2023-08-30 10:15:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:15:35,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:15:35,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2023-08-30 10:15:35,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46901960784313723 [2023-08-30 10:15:35,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2023-08-30 10:15:35,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2023-08-30 10:15:35,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:35,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2023-08-30 10:15:35,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:35,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:35,834 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:35,835 INFO L175 Difference]: Start difference. First operand has 100 places, 77 transitions, 586 flow. Second operand 3 states and 598 transitions. [2023-08-30 10:15:35,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 81 transitions, 782 flow [2023-08-30 10:15:35,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 81 transitions, 779 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:15:35,839 INFO L231 Difference]: Finished difference. Result has 99 places, 76 transitions, 597 flow [2023-08-30 10:15:35,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=597, PETRI_PLACES=99, PETRI_TRANSITIONS=76} [2023-08-30 10:15:35,841 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 34 predicate places. [2023-08-30 10:15:35,841 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 76 transitions, 597 flow [2023-08-30 10:15:35,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:35,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:35,841 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:35,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 10:15:35,841 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:35,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:35,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2007746634, now seen corresponding path program 1 times [2023-08-30 10:15:35,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:35,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644478693] [2023-08-30 10:15:35,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:35,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:36,234 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:36,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:36,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644478693] [2023-08-30 10:15:36,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644478693] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:15:36,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788493975] [2023-08-30 10:15:36,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:36,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:15:36,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:15:36,249 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) [2023-08-30 10:15:36,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 10:15:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:36,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-30 10:15:36,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:15:36,367 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 7 treesize of output 6 [2023-08-30 10:15:36,410 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:15:36,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-30 10:15:36,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:15:36,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 17 [2023-08-30 10:15:36,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-08-30 10:15:36,582 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:15:36,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:15:36,761 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_750 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_750) |c_~#cache~0.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483650))) is different from false [2023-08-30 10:15:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:15:36,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788493975] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:15:36,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:15:36,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 24 [2023-08-30 10:15:36,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111038330] [2023-08-30 10:15:36,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:15:36,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-30 10:15:36,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:36,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-30 10:15:36,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=458, Unknown=1, NotChecked=46, Total=650 [2023-08-30 10:15:36,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 425 [2023-08-30 10:15:36,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 76 transitions, 597 flow. Second operand has 26 states, 26 states have (on average 152.23076923076923) internal successors, (3958), 26 states have internal predecessors, (3958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:36,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:36,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 425 [2023-08-30 10:15:36,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:37,472 INFO L130 PetriNetUnfolder]: 112/405 cut-off events. [2023-08-30 10:15:37,473 INFO L131 PetriNetUnfolder]: For 1144/1155 co-relation queries the response was YES. [2023-08-30 10:15:37,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 405 events. 112/405 cut-off events. For 1144/1155 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1823 event pairs, 13 based on Foata normal form. 10/415 useless extension candidates. Maximal degree in co-relation 1599. Up to 97 conditions per place. [2023-08-30 10:15:37,478 INFO L137 encePairwiseOnDemand]: 411/425 looper letters, 73 selfloop transitions, 28 changer transitions 11/116 dead transitions. [2023-08-30 10:15:37,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 116 transitions, 1058 flow [2023-08-30 10:15:37,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:15:37,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:15:37,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2024 transitions. [2023-08-30 10:15:37,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663348416289593 [2023-08-30 10:15:37,490 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2024 transitions. [2023-08-30 10:15:37,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2024 transitions. [2023-08-30 10:15:37,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:37,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2024 transitions. [2023-08-30 10:15:37,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 155.69230769230768) internal successors, (2024), 13 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:37,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 425.0) internal successors, (5950), 14 states have internal predecessors, (5950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:37,506 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 425.0) internal successors, (5950), 14 states have internal predecessors, (5950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:37,506 INFO L175 Difference]: Start difference. First operand has 99 places, 76 transitions, 597 flow. Second operand 13 states and 2024 transitions. [2023-08-30 10:15:37,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 116 transitions, 1058 flow [2023-08-30 10:15:37,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 116 transitions, 1042 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:15:37,513 INFO L231 Difference]: Finished difference. Result has 118 places, 78 transitions, 720 flow [2023-08-30 10:15:37,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=720, PETRI_PLACES=118, PETRI_TRANSITIONS=78} [2023-08-30 10:15:37,514 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 53 predicate places. [2023-08-30 10:15:37,514 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 78 transitions, 720 flow [2023-08-30 10:15:37,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 152.23076923076923) internal successors, (3958), 26 states have internal predecessors, (3958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:37,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:37,515 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:37,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 10:15:37,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 10:15:37,720 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:37,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:37,721 INFO L85 PathProgramCache]: Analyzing trace with hash -63538733, now seen corresponding path program 1 times [2023-08-30 10:15:37,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:37,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900259276] [2023-08-30 10:15:37,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:37,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:38,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:38,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900259276] [2023-08-30 10:15:38,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900259276] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:15:38,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267758526] [2023-08-30 10:15:38,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:38,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:15:38,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:15:38,109 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:15:38,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 10:15:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:38,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-30 10:15:38,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:15:38,218 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 7 treesize of output 6 [2023-08-30 10:15:38,253 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:15:38,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-30 10:15:38,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:15:38,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 17 [2023-08-30 10:15:38,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2023-08-30 10:15:38,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-08-30 10:15:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:15:38,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:15:41,125 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_853 (Array Int Int)) (|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (|v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_80| Int)) (< 0 (+ (select (select (let ((.cse0 (store (store |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (let ((.cse2 (select |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (store .cse2 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ (select .cse2 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_853))) (store .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (let ((.cse1 (select .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (store .cse1 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ (- 1) (select .cse1 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|)))))) |c_~#cache~0.base|) |v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_80|) 2147483650))) is different from false [2023-08-30 10:15:42,191 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 55 trivial. 4 not checked. [2023-08-30 10:15:42,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267758526] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:15:42,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:15:42,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 25 [2023-08-30 10:15:42,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016034557] [2023-08-30 10:15:42,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:15:42,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-30 10:15:42,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:42,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-30 10:15:42,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=510, Unknown=10, NotChecked=48, Total=702 [2023-08-30 10:15:42,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 425 [2023-08-30 10:15:42,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 78 transitions, 720 flow. Second operand has 27 states, 27 states have (on average 146.37037037037038) internal successors, (3952), 27 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:42,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:42,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 425 [2023-08-30 10:15:42,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:50,223 INFO L130 PetriNetUnfolder]: 120/457 cut-off events. [2023-08-30 10:15:50,223 INFO L131 PetriNetUnfolder]: For 1849/1851 co-relation queries the response was YES. [2023-08-30 10:15:50,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1998 conditions, 457 events. 120/457 cut-off events. For 1849/1851 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1945 event pairs, 12 based on Foata normal form. 6/463 useless extension candidates. Maximal degree in co-relation 1949. Up to 79 conditions per place. [2023-08-30 10:15:50,225 INFO L137 encePairwiseOnDemand]: 410/425 looper letters, 0 selfloop transitions, 0 changer transitions 133/133 dead transitions. [2023-08-30 10:15:50,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 133 transitions, 1365 flow [2023-08-30 10:15:50,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 10:15:50,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 10:15:50,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3398 transitions. [2023-08-30 10:15:50,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3476214833759591 [2023-08-30 10:15:50,250 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3398 transitions. [2023-08-30 10:15:50,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3398 transitions. [2023-08-30 10:15:50,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:50,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3398 transitions. [2023-08-30 10:15:50,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 147.7391304347826) internal successors, (3398), 23 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:50,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 425.0) internal successors, (10200), 24 states have internal predecessors, (10200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:50,265 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 425.0) internal successors, (10200), 24 states have internal predecessors, (10200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:50,265 INFO L175 Difference]: Start difference. First operand has 118 places, 78 transitions, 720 flow. Second operand 23 states and 3398 transitions. [2023-08-30 10:15:50,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 133 transitions, 1365 flow [2023-08-30 10:15:50,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 133 transitions, 1246 flow, removed 35 selfloop flow, removed 13 redundant places. [2023-08-30 10:15:50,273 INFO L231 Difference]: Finished difference. Result has 122 places, 0 transitions, 0 flow [2023-08-30 10:15:50,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=122, PETRI_TRANSITIONS=0} [2023-08-30 10:15:50,273 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 57 predicate places. [2023-08-30 10:15:50,273 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 0 transitions, 0 flow [2023-08-30 10:15:50,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 146.37037037037038) internal successors, (3952), 27 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:50,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2023-08-30 10:15:50,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2023-08-30 10:15:50,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2023-08-30 10:15:50,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2023-08-30 10:15:50,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2023-08-30 10:15:50,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2023-08-30 10:15:50,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2023-08-30 10:15:50,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2023-08-30 10:15:50,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2023-08-30 10:15:50,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2023-08-30 10:15:50,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2023-08-30 10:15:50,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2023-08-30 10:15:50,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2023-08-30 10:15:50,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2023-08-30 10:15:50,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2023-08-30 10:15:50,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2023-08-30 10:15:50,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2023-08-30 10:15:50,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2023-08-30 10:15:50,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2023-08-30 10:15:50,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2023-08-30 10:15:50,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2023-08-30 10:15:50,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2023-08-30 10:15:50,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2023-08-30 10:15:50,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2023-08-30 10:15:50,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 10:15:50,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 10:15:50,480 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:50,481 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:15:50,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 226 transitions, 460 flow [2023-08-30 10:15:50,500 INFO L130 PetriNetUnfolder]: 49/318 cut-off events. [2023-08-30 10:15:50,501 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:15:50,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 318 events. 49/318 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1228 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 181. Up to 8 conditions per place. [2023-08-30 10:15:50,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 226 transitions, 460 flow [2023-08-30 10:15:50,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 215 transitions, 435 flow [2023-08-30 10:15:50,503 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:15:50,503 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 215 transitions, 435 flow [2023-08-30 10:15:50,503 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 215 transitions, 435 flow [2023-08-30 10:15:50,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 215 transitions, 435 flow [2023-08-30 10:15:50,514 INFO L130 PetriNetUnfolder]: 48/307 cut-off events. [2023-08-30 10:15:50,514 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:15:50,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 307 events. 48/307 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1139 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 181. Up to 8 conditions per place. [2023-08-30 10:15:50,519 INFO L119 LiptonReduction]: Number of co-enabled transitions 16320 [2023-08-30 10:16:13,595 INFO L134 LiptonReduction]: Checked pairs total: 25885 [2023-08-30 10:16:13,596 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-08-30 10:16:13,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:16:13,597 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;@76519a57, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:16:13,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:16:13,600 INFO L130 PetriNetUnfolder]: 9/42 cut-off events. [2023-08-30 10:16:13,600 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:16:13,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:13,601 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-30 10:16:13,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:16:13,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:13,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1685156417, now seen corresponding path program 1 times [2023-08-30 10:16:13,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:13,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584258957] [2023-08-30 10:16:13,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:13,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:16:13,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:13,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584258957] [2023-08-30 10:16:13,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584258957] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:16:13,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:16:13,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:16:13,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41709351] [2023-08-30 10:16:13,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:16:13,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:16:13,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:13,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:16:13,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:16:13,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 414 [2023-08-30 10:16:13,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 82 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:13,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:13,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 414 [2023-08-30 10:16:13,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:14,170 INFO L130 PetriNetUnfolder]: 598/1254 cut-off events. [2023-08-30 10:16:14,170 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:16:14,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2387 conditions, 1254 events. 598/1254 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7351 event pairs, 504 based on Foata normal form. 165/1007 useless extension candidates. Maximal degree in co-relation 2321. Up to 1127 conditions per place. [2023-08-30 10:16:14,171 INFO L137 encePairwiseOnDemand]: 390/414 looper letters, 30 selfloop transitions, 2 changer transitions 25/62 dead transitions. [2023-08-30 10:16:14,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 233 flow [2023-08-30 10:16:14,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:16:14,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:16:14,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2023-08-30 10:16:14,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209339774557166 [2023-08-30 10:16:14,173 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2023-08-30 10:16:14,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2023-08-30 10:16:14,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:14,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2023-08-30 10:16:14,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:14,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:14,175 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:14,175 INFO L175 Difference]: Start difference. First operand has 60 places, 82 transitions, 169 flow. Second operand 3 states and 647 transitions. [2023-08-30 10:16:14,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 233 flow [2023-08-30 10:16:14,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 233 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:16:14,176 INFO L231 Difference]: Finished difference. Result has 62 places, 37 transitions, 89 flow [2023-08-30 10:16:14,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=62, PETRI_TRANSITIONS=37} [2023-08-30 10:16:14,177 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2023-08-30 10:16:14,177 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 37 transitions, 89 flow [2023-08-30 10:16:14,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:14,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:14,177 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:16:14,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 10:16:14,177 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:16:14,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:14,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1966209725, now seen corresponding path program 1 times [2023-08-30 10:16:14,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:14,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641279461] [2023-08-30 10:16:14,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:14,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:14,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:16:14,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:14,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641279461] [2023-08-30 10:16:14,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641279461] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:16:14,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397236618] [2023-08-30 10:16:14,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:14,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:14,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:16:14,247 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:16:14,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 10:16:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:14,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:16:14,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:16:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:16:14,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:16:14,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:16:14,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397236618] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:16:14,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:16:14,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:16:14,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789092019] [2023-08-30 10:16:14,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:16:14,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:16:14,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:14,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:16:14,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:16:14,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 414 [2023-08-30 10:16:14,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 37 transitions, 89 flow. Second operand has 7 states, 7 states have (on average 191.57142857142858) internal successors, (1341), 7 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:14,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:14,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 414 [2023-08-30 10:16:14,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:15,015 INFO L130 PetriNetUnfolder]: 118/277 cut-off events. [2023-08-30 10:16:15,015 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:16:15,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 277 events. 118/277 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1049 event pairs, 105 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 533. Up to 249 conditions per place. [2023-08-30 10:16:15,015 INFO L137 encePairwiseOnDemand]: 411/414 looper letters, 30 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-30 10:16:15,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 171 flow [2023-08-30 10:16:15,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:16:15,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:16:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1178 transitions. [2023-08-30 10:16:15,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742351046698873 [2023-08-30 10:16:15,026 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1178 transitions. [2023-08-30 10:16:15,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1178 transitions. [2023-08-30 10:16:15,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:15,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1178 transitions. [2023-08-30 10:16:15,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.33333333333334) internal successors, (1178), 6 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:15,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:15,029 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:15,029 INFO L175 Difference]: Start difference. First operand has 62 places, 37 transitions, 89 flow. Second operand 6 states and 1178 transitions. [2023-08-30 10:16:15,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 171 flow [2023-08-30 10:16:15,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 167 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:16:15,030 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 121 flow [2023-08-30 10:16:15,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=121, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-08-30 10:16:15,030 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -14 predicate places. [2023-08-30 10:16:15,030 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 121 flow [2023-08-30 10:16:15,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 191.57142857142858) internal successors, (1341), 7 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:15,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:15,031 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-30 10:16:15,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-30 10:16:15,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:15,236 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:16:15,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:15,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1618944705, now seen corresponding path program 2 times [2023-08-30 10:16:15,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:15,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402492523] [2023-08-30 10:16:15,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:15,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:15,452 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:16:15,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:15,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402492523] [2023-08-30 10:16:15,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402492523] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:16:15,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974561496] [2023-08-30 10:16:15,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:16:15,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:15,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:16:15,454 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:16:15,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 10:16:15,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:16:15,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:16:15,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:16:15,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:16:15,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:16:15,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:16:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:16:15,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974561496] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:16:15,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:16:15,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:16:15,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955757111] [2023-08-30 10:16:15,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:16:15,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:16:15,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:15,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:16:15,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:16:16,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 414 [2023-08-30 10:16:16,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 121 flow. Second operand has 13 states, 13 states have (on average 191.30769230769232) internal successors, (2487), 13 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:16,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:16,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 414 [2023-08-30 10:16:16,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:16,816 INFO L130 PetriNetUnfolder]: 118/283 cut-off events. [2023-08-30 10:16:16,816 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 10:16:16,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 283 events. 118/283 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1049 event pairs, 105 based on Foata normal form. 6/180 useless extension candidates. Maximal degree in co-relation 524. Up to 249 conditions per place. [2023-08-30 10:16:16,817 INFO L137 encePairwiseOnDemand]: 411/414 looper letters, 30 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2023-08-30 10:16:16,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 46 transitions, 239 flow [2023-08-30 10:16:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:16:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:16:16,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2327 transitions. [2023-08-30 10:16:16,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46839774557165864 [2023-08-30 10:16:16,819 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2327 transitions. [2023-08-30 10:16:16,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2327 transitions. [2023-08-30 10:16:16,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:16,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2327 transitions. [2023-08-30 10:16:16,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 193.91666666666666) internal successors, (2327), 12 states have internal predecessors, (2327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:16,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 414.0) internal successors, (5382), 13 states have internal predecessors, (5382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:16,824 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 414.0) internal successors, (5382), 13 states have internal predecessors, (5382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:16,824 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 121 flow. Second operand 12 states and 2327 transitions. [2023-08-30 10:16:16,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 46 transitions, 239 flow [2023-08-30 10:16:16,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 46 transitions, 225 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:16:16,825 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 191 flow [2023-08-30 10:16:16,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=191, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-08-30 10:16:16,825 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2023-08-30 10:16:16,825 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 191 flow [2023-08-30 10:16:16,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 191.30769230769232) internal successors, (2487), 13 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:16,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:16,826 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-30 10:16:16,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-30 10:16:17,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-30 10:16:17,030 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:16:17,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:17,031 INFO L85 PathProgramCache]: Analyzing trace with hash -428782465, now seen corresponding path program 3 times [2023-08-30 10:16:17,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:17,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302643292] [2023-08-30 10:16:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:17,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:16:17,047 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:16:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:16:17,082 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:16:17,082 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:16:17,082 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:16:17,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 10:16:17,083 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-30 10:16:17,087 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:16:17,088 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:16:17,088 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:16:17,121 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 10:16:17,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 308 transitions, 634 flow [2023-08-30 10:16:17,162 INFO L130 PetriNetUnfolder]: 82/528 cut-off events. [2023-08-30 10:16:17,162 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:16:17,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 528 events. 82/528 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2488 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 320. Up to 12 conditions per place. [2023-08-30 10:16:17,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 308 transitions, 634 flow [2023-08-30 10:16:17,169 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 308 transitions, 634 flow [2023-08-30 10:16:17,170 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:16:17,170 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 308 transitions, 634 flow [2023-08-30 10:16:17,170 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 308 transitions, 634 flow [2023-08-30 10:16:17,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 308 transitions, 634 flow [2023-08-30 10:16:17,209 INFO L130 PetriNetUnfolder]: 82/528 cut-off events. [2023-08-30 10:16:17,209 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:16:17,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 528 events. 82/528 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2488 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 320. Up to 12 conditions per place. [2023-08-30 10:16:17,230 INFO L119 LiptonReduction]: Number of co-enabled transitions 48480 [2023-08-30 10:16:47,475 INFO L134 LiptonReduction]: Checked pairs total: 82899 [2023-08-30 10:16:47,476 INFO L136 LiptonReduction]: Total number of compositions: 253 [2023-08-30 10:16:47,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:16:47,477 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;@76519a57, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:16:47,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-30 10:16:47,478 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 10:16:47,478 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:16:47,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:47,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:16:47,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:16:47,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:47,478 INFO L85 PathProgramCache]: Analyzing trace with hash 55237, now seen corresponding path program 1 times [2023-08-30 10:16:47,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:47,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706909346] [2023-08-30 10:16:47,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:47,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:47,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:16:47,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:47,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706909346] [2023-08-30 10:16:47,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706909346] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:16:47,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:16:47,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:16:47,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316425937] [2023-08-30 10:16:47,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:16:47,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:16:47,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:47,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:16:47,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:16:47,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 561 [2023-08-30 10:16:47,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 130 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:47,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:47,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 561 [2023-08-30 10:16:47,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:51,562 INFO L130 PetriNetUnfolder]: 32149/48768 cut-off events. [2023-08-30 10:16:51,562 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2023-08-30 10:16:51,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95420 conditions, 48768 events. 32149/48768 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1655. Compared 359419 event pairs, 28810 based on Foata normal form. 5570/37278 useless extension candidates. Maximal degree in co-relation 44782. Up to 46511 conditions per place. [2023-08-30 10:16:51,866 INFO L137 encePairwiseOnDemand]: 525/561 looper letters, 84 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-30 10:16:51,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 99 transitions, 388 flow [2023-08-30 10:16:51,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:16:51,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:16:51,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 895 transitions. [2023-08-30 10:16:51,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5317884729649436 [2023-08-30 10:16:51,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 895 transitions. [2023-08-30 10:16:51,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 895 transitions. [2023-08-30 10:16:51,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:51,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 895 transitions. [2023-08-30 10:16:51,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:51,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:51,872 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:51,872 INFO L175 Difference]: Start difference. First operand has 95 places, 130 transitions, 278 flow. Second operand 3 states and 895 transitions. [2023-08-30 10:16:51,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 99 transitions, 388 flow [2023-08-30 10:16:51,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 99 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:16:51,874 INFO L231 Difference]: Finished difference. Result has 97 places, 99 transitions, 228 flow [2023-08-30 10:16:51,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=97, PETRI_TRANSITIONS=99} [2023-08-30 10:16:51,875 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 2 predicate places. [2023-08-30 10:16:51,875 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 99 transitions, 228 flow [2023-08-30 10:16:51,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:51,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:51,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:16:51,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 10:16:51,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:16:51,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:51,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1715659, now seen corresponding path program 1 times [2023-08-30 10:16:51,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:51,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733018681] [2023-08-30 10:16:51,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:51,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:16:51,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:51,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733018681] [2023-08-30 10:16:51,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733018681] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:16:51,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:16:51,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:16:51,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865761892] [2023-08-30 10:16:51,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:16:51,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:16:51,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:51,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:16:51,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:16:52,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 561 [2023-08-30 10:16:52,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 99 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:52,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:52,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 561 [2023-08-30 10:16:52,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:54,760 INFO L130 PetriNetUnfolder]: 32149/48767 cut-off events. [2023-08-30 10:16:54,761 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2023-08-30 10:16:54,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95425 conditions, 48767 events. 32149/48767 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1655. Compared 359946 event pairs, 28810 based on Foata normal form. 0/31708 useless extension candidates. Maximal degree in co-relation 95412. Up to 46510 conditions per place. [2023-08-30 10:16:55,072 INFO L137 encePairwiseOnDemand]: 559/561 looper letters, 84 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2023-08-30 10:16:55,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 98 transitions, 394 flow [2023-08-30 10:16:55,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:16:55,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:16:55,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 859 transitions. [2023-08-30 10:16:55,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5103980986333928 [2023-08-30 10:16:55,074 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 859 transitions. [2023-08-30 10:16:55,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 859 transitions. [2023-08-30 10:16:55,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:55,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 859 transitions. [2023-08-30 10:16:55,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:55,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:55,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:55,077 INFO L175 Difference]: Start difference. First operand has 97 places, 99 transitions, 228 flow. Second operand 3 states and 859 transitions. [2023-08-30 10:16:55,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 98 transitions, 394 flow [2023-08-30 10:16:55,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 98 transitions, 390 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:16:55,079 INFO L231 Difference]: Finished difference. Result has 97 places, 98 transitions, 222 flow [2023-08-30 10:16:55,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=97, PETRI_TRANSITIONS=98} [2023-08-30 10:16:55,080 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 2 predicate places. [2023-08-30 10:16:55,080 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 98 transitions, 222 flow [2023-08-30 10:16:55,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:55,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:55,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:16:55,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 10:16:55,081 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:16:55,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:55,081 INFO L85 PathProgramCache]: Analyzing trace with hash -334930526, now seen corresponding path program 1 times [2023-08-30 10:16:55,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:55,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897036929] [2023-08-30 10:16:55,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:55,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:55,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:16:55,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:55,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897036929] [2023-08-30 10:16:55,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897036929] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:16:55,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497159674] [2023-08-30 10:16:55,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:55,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:55,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:16:55,152 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:16:55,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 10:16:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:55,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:16:55,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:16:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:16:55,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:16:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:16:55,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497159674] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:16:55,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:16:55,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:16:55,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239686212] [2023-08-30 10:16:55,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:16:55,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:16:55,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:55,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:16:55,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:16:55,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 561 [2023-08-30 10:16:55,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 98 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 258.57142857142856) internal successors, (1810), 7 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:55,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:55,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 561 [2023-08-30 10:16:55,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:59,050 INFO L130 PetriNetUnfolder]: 32149/48770 cut-off events. [2023-08-30 10:16:59,051 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2023-08-30 10:16:59,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95433 conditions, 48770 events. 32149/48770 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1652. Compared 360014 event pairs, 28810 based on Foata normal form. 0/31711 useless extension candidates. Maximal degree in co-relation 95423. Up to 46510 conditions per place. [2023-08-30 10:16:59,234 INFO L137 encePairwiseOnDemand]: 558/561 looper letters, 83 selfloop transitions, 5 changer transitions 0/101 dead transitions. [2023-08-30 10:16:59,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 101 transitions, 410 flow [2023-08-30 10:16:59,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:16:59,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:16:59,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1633 transitions. [2023-08-30 10:16:59,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851455733808675 [2023-08-30 10:16:59,237 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1633 transitions. [2023-08-30 10:16:59,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1633 transitions. [2023-08-30 10:16:59,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:59,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1633 transitions. [2023-08-30 10:16:59,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:59,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 561.0) internal successors, (3927), 7 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:59,241 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 561.0) internal successors, (3927), 7 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:59,241 INFO L175 Difference]: Start difference. First operand has 97 places, 98 transitions, 222 flow. Second operand 6 states and 1633 transitions. [2023-08-30 10:16:59,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 101 transitions, 410 flow [2023-08-30 10:16:59,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 101 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:16:59,243 INFO L231 Difference]: Finished difference. Result has 104 places, 101 transitions, 257 flow [2023-08-30 10:16:59,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=104, PETRI_TRANSITIONS=101} [2023-08-30 10:16:59,244 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 9 predicate places. [2023-08-30 10:16:59,244 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 101 transitions, 257 flow [2023-08-30 10:16:59,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.57142857142856) internal successors, (1810), 7 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:59,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:59,244 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 10:16:59,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 10:16:59,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:16:59,449 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:16:59,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:59,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1285944292, now seen corresponding path program 2 times [2023-08-30 10:16:59,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:59,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049837731] [2023-08-30 10:16:59,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:59,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:16:59,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:59,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049837731] [2023-08-30 10:16:59,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049837731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:16:59,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:16:59,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:16:59,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289306504] [2023-08-30 10:16:59,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:16:59,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:16:59,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:59,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:16:59,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:16:59,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 561 [2023-08-30 10:16:59,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:59,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:59,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 561 [2023-08-30 10:16:59,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:02,764 INFO L130 PetriNetUnfolder]: 31852/49102 cut-off events. [2023-08-30 10:17:02,764 INFO L131 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2023-08-30 10:17:02,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95697 conditions, 49102 events. 31852/49102 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 1578. Compared 370232 event pairs, 13860 based on Foata normal form. 0/32075 useless extension candidates. Maximal degree in co-relation 95683. Up to 46370 conditions per place. [2023-08-30 10:17:02,975 INFO L137 encePairwiseOnDemand]: 556/561 looper letters, 112 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2023-08-30 10:17:02,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 127 transitions, 537 flow [2023-08-30 10:17:02,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:17:02,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:17:02,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 887 transitions. [2023-08-30 10:17:02,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270350564468211 [2023-08-30 10:17:02,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 887 transitions. [2023-08-30 10:17:02,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 887 transitions. [2023-08-30 10:17:02,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:02,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 887 transitions. [2023-08-30 10:17:02,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:02,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:02,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:02,979 INFO L175 Difference]: Start difference. First operand has 104 places, 101 transitions, 257 flow. Second operand 3 states and 887 transitions. [2023-08-30 10:17:02,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 127 transitions, 537 flow [2023-08-30 10:17:02,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 127 transitions, 523 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:17:02,981 INFO L231 Difference]: Finished difference. Result has 106 places, 102 transitions, 259 flow [2023-08-30 10:17:02,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=106, PETRI_TRANSITIONS=102} [2023-08-30 10:17:02,982 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 11 predicate places. [2023-08-30 10:17:02,982 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 102 transitions, 259 flow [2023-08-30 10:17:02,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:02,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:02,982 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:02,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 10:17:02,983 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:17:02,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:02,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1830814040, now seen corresponding path program 1 times [2023-08-30 10:17:02,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:02,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2896633] [2023-08-30 10:17:02,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:02,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:03,177 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:17:03,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:03,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2896633] [2023-08-30 10:17:03,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2896633] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:03,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777327541] [2023-08-30 10:17:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:03,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:03,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:03,179 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:17:03,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 10:17:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:03,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:17:03,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:03,341 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:17:03,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:03,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:17:03,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777327541] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:03,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:03,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:17:03,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588336032] [2023-08-30 10:17:03,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:03,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:17:03,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:03,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:17:03,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:17:03,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 561 [2023-08-30 10:17:03,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 102 transitions, 259 flow. Second operand has 13 states, 13 states have (on average 258.61538461538464) internal successors, (3362), 13 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:03,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:04,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 561 [2023-08-30 10:17:04,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:08,000 INFO L130 PetriNetUnfolder]: 32302/49012 cut-off events. [2023-08-30 10:17:08,000 INFO L131 PetriNetUnfolder]: For 1418/1418 co-relation queries the response was YES. [2023-08-30 10:17:08,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97867 conditions, 49012 events. 32302/49012 cut-off events. For 1418/1418 co-relation queries the response was YES. Maximal size of possible extension queue 1595. Compared 359103 event pairs, 28764 based on Foata normal form. 6/32550 useless extension candidates. Maximal degree in co-relation 97852. Up to 46393 conditions per place. [2023-08-30 10:17:08,250 INFO L137 encePairwiseOnDemand]: 558/561 looper letters, 84 selfloop transitions, 11 changer transitions 0/108 dead transitions. [2023-08-30 10:17:08,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 108 transitions, 485 flow [2023-08-30 10:17:08,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:17:08,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:17:08,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3184 transitions. [2023-08-30 10:17:08,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47296494355317886 [2023-08-30 10:17:08,254 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3184 transitions. [2023-08-30 10:17:08,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3184 transitions. [2023-08-30 10:17:08,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:08,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3184 transitions. [2023-08-30 10:17:08,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 265.3333333333333) internal successors, (3184), 12 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:08,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 561.0) internal successors, (7293), 13 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:08,261 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 561.0) internal successors, (7293), 13 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:08,261 INFO L175 Difference]: Start difference. First operand has 106 places, 102 transitions, 259 flow. Second operand 12 states and 3184 transitions. [2023-08-30 10:17:08,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 108 transitions, 485 flow [2023-08-30 10:17:08,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 108 transitions, 483 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:17:08,265 INFO L231 Difference]: Finished difference. Result has 122 places, 108 transitions, 341 flow [2023-08-30 10:17:08,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=341, PETRI_PLACES=122, PETRI_TRANSITIONS=108} [2023-08-30 10:17:08,265 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 27 predicate places. [2023-08-30 10:17:08,265 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 108 transitions, 341 flow [2023-08-30 10:17:08,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 258.61538461538464) internal successors, (3362), 13 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:08,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:08,266 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:08,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-30 10:17:08,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 10:17:08,471 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:17:08,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:08,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1535509503, now seen corresponding path program 1 times [2023-08-30 10:17:08,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:08,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299077505] [2023-08-30 10:17:08,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:08,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:08,559 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:08,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:08,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299077505] [2023-08-30 10:17:08,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299077505] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:08,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522138504] [2023-08-30 10:17:08,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:08,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:08,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:08,561 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:17:08,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 10:17:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:08,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:17:08,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:09,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:17:09,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522138504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:09,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:17:09,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 10:17:09,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082004362] [2023-08-30 10:17:09,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:09,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:17:09,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:09,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:17:09,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:17:09,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 561 [2023-08-30 10:17:09,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 108 transitions, 341 flow. Second operand has 4 states, 4 states have (on average 260.25) internal successors, (1041), 4 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:09,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:09,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 561 [2023-08-30 10:17:09,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:12,270 INFO L130 PetriNetUnfolder]: 30652/47212 cut-off events. [2023-08-30 10:17:12,270 INFO L131 PetriNetUnfolder]: For 1284/1284 co-relation queries the response was YES. [2023-08-30 10:17:12,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93899 conditions, 47212 events. 30652/47212 cut-off events. For 1284/1284 co-relation queries the response was YES. Maximal size of possible extension queue 1548. Compared 354277 event pairs, 13332 based on Foata normal form. 0/31665 useless extension candidates. Maximal degree in co-relation 93877. Up to 44707 conditions per place. [2023-08-30 10:17:12,557 INFO L137 encePairwiseOnDemand]: 558/561 looper letters, 117 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2023-08-30 10:17:12,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 132 transitions, 625 flow [2023-08-30 10:17:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:17:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:17:12,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1142 transitions. [2023-08-30 10:17:12,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089126559714795 [2023-08-30 10:17:12,559 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1142 transitions. [2023-08-30 10:17:12,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1142 transitions. [2023-08-30 10:17:12,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:12,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1142 transitions. [2023-08-30 10:17:12,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.5) internal successors, (1142), 4 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:12,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 561.0) internal successors, (2805), 5 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:12,562 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 561.0) internal successors, (2805), 5 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:12,562 INFO L175 Difference]: Start difference. First operand has 122 places, 108 transitions, 341 flow. Second operand 4 states and 1142 transitions. [2023-08-30 10:17:12,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 132 transitions, 625 flow [2023-08-30 10:17:12,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 132 transitions, 577 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 10:17:12,565 INFO L231 Difference]: Finished difference. Result has 119 places, 107 transitions, 293 flow [2023-08-30 10:17:12,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=293, PETRI_PLACES=119, PETRI_TRANSITIONS=107} [2023-08-30 10:17:12,566 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 24 predicate places. [2023-08-30 10:17:12,566 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 107 transitions, 293 flow [2023-08-30 10:17:12,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 260.25) internal successors, (1041), 4 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:12,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:12,567 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:12,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 10:17:12,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-30 10:17:12,772 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:17:12,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:12,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1553247336, now seen corresponding path program 2 times [2023-08-30 10:17:12,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:12,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858945378] [2023-08-30 10:17:12,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:12,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:13,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:13,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858945378] [2023-08-30 10:17:13,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858945378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:13,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:13,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:17:13,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647573087] [2023-08-30 10:17:13,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:13,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:17:13,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:13,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:17:13,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:17:14,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 561 [2023-08-30 10:17:14,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 107 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 248.66666666666666) internal successors, (1492), 6 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:14,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:14,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 561 [2023-08-30 10:17:14,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:24,063 INFO L130 PetriNetUnfolder]: 57664/88000 cut-off events. [2023-08-30 10:17:24,063 INFO L131 PetriNetUnfolder]: For 2906/2906 co-relation queries the response was YES. [2023-08-30 10:17:24,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176841 conditions, 88000 events. 57664/88000 cut-off events. For 2906/2906 co-relation queries the response was YES. Maximal size of possible extension queue 2575. Compared 710413 event pairs, 9558 based on Foata normal form. 0/58377 useless extension candidates. Maximal degree in co-relation 176820. Up to 46274 conditions per place. [2023-08-30 10:17:24,590 INFO L137 encePairwiseOnDemand]: 548/561 looper letters, 311 selfloop transitions, 26 changer transitions 0/350 dead transitions. [2023-08-30 10:17:24,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 350 transitions, 1516 flow [2023-08-30 10:17:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:17:24,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:17:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2056 transitions. [2023-08-30 10:17:24,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235548764960529 [2023-08-30 10:17:24,602 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2056 transitions. [2023-08-30 10:17:24,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2056 transitions. [2023-08-30 10:17:24,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:24,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2056 transitions. [2023-08-30 10:17:24,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 293.7142857142857) internal successors, (2056), 7 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:24,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 561.0) internal successors, (4488), 8 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:24,607 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 561.0) internal successors, (4488), 8 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:24,608 INFO L175 Difference]: Start difference. First operand has 119 places, 107 transitions, 293 flow. Second operand 7 states and 2056 transitions. [2023-08-30 10:17:24,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 350 transitions, 1516 flow [2023-08-30 10:17:24,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 350 transitions, 1510 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:17:24,618 INFO L231 Difference]: Finished difference. Result has 128 places, 132 transitions, 462 flow [2023-08-30 10:17:24,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=462, PETRI_PLACES=128, PETRI_TRANSITIONS=132} [2023-08-30 10:17:24,618 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 33 predicate places. [2023-08-30 10:17:24,619 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 132 transitions, 462 flow [2023-08-30 10:17:24,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.66666666666666) internal successors, (1492), 6 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:24,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:24,619 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:24,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 10:17:24,619 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:17:24,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:24,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1535509504, now seen corresponding path program 1 times [2023-08-30 10:17:24,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:24,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212195635] [2023-08-30 10:17:24,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:24,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:17:24,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:24,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212195635] [2023-08-30 10:17:24,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212195635] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:24,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:24,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:17:24,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888447307] [2023-08-30 10:17:24,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:24,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:17:24,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:24,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:17:24,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:17:24,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 561 [2023-08-30 10:17:24,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 132 transitions, 462 flow. Second operand has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:24,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:24,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 561 [2023-08-30 10:17:24,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:32,455 INFO L130 PetriNetUnfolder]: 55904/87549 cut-off events. [2023-08-30 10:17:32,455 INFO L131 PetriNetUnfolder]: For 18589/18589 co-relation queries the response was YES. [2023-08-30 10:17:32,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194535 conditions, 87549 events. 55904/87549 cut-off events. For 18589/18589 co-relation queries the response was YES. Maximal size of possible extension queue 2264. Compared 729592 event pairs, 5902 based on Foata normal form. 0/63580 useless extension candidates. Maximal degree in co-relation 194508. Up to 76471 conditions per place. [2023-08-30 10:17:33,016 INFO L137 encePairwiseOnDemand]: 557/561 looper letters, 170 selfloop transitions, 6 changer transitions 0/189 dead transitions. [2023-08-30 10:17:33,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 189 transitions, 984 flow [2023-08-30 10:17:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:17:33,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:17:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 902 transitions. [2023-08-30 10:17:33,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2023-08-30 10:17:33,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 902 transitions. [2023-08-30 10:17:33,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 902 transitions. [2023-08-30 10:17:33,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:33,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 902 transitions. [2023-08-30 10:17:33,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:33,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:33,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:33,020 INFO L175 Difference]: Start difference. First operand has 128 places, 132 transitions, 462 flow. Second operand 3 states and 902 transitions. [2023-08-30 10:17:33,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 189 transitions, 984 flow [2023-08-30 10:17:33,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 189 transitions, 984 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:17:33,063 INFO L231 Difference]: Finished difference. Result has 130 places, 132 transitions, 484 flow [2023-08-30 10:17:33,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=130, PETRI_TRANSITIONS=132} [2023-08-30 10:17:33,064 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 35 predicate places. [2023-08-30 10:17:33,064 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 132 transitions, 484 flow [2023-08-30 10:17:33,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:33,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:33,065 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:33,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 10:17:33,065 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:17:33,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:33,065 INFO L85 PathProgramCache]: Analyzing trace with hash -2048318906, now seen corresponding path program 1 times [2023-08-30 10:17:33,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:33,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047216658] [2023-08-30 10:17:33,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:33,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:33,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:33,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047216658] [2023-08-30 10:17:33,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047216658] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:33,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:33,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:17:33,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549828] [2023-08-30 10:17:33,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:33,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:17:33,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:33,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:17:33,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:17:33,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 561 [2023-08-30 10:17:33,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 132 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:33,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:33,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 561 [2023-08-30 10:17:33,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:45,135 INFO L130 PetriNetUnfolder]: 96021/146222 cut-off events. [2023-08-30 10:17:45,135 INFO L131 PetriNetUnfolder]: For 53461/53461 co-relation queries the response was YES. [2023-08-30 10:17:45,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335689 conditions, 146222 events. 96021/146222 cut-off events. For 53461/53461 co-relation queries the response was YES. Maximal size of possible extension queue 4179. Compared 1237904 event pairs, 59173 based on Foata normal form. 888/107591 useless extension candidates. Maximal degree in co-relation 335661. Up to 82754 conditions per place. [2023-08-30 10:17:46,268 INFO L137 encePairwiseOnDemand]: 556/561 looper letters, 215 selfloop transitions, 2 changer transitions 0/230 dead transitions. [2023-08-30 10:17:46,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 230 transitions, 1256 flow [2023-08-30 10:17:46,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:17:46,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:17:46,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 932 transitions. [2023-08-30 10:17:46,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5537730243612596 [2023-08-30 10:17:46,270 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 932 transitions. [2023-08-30 10:17:46,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 932 transitions. [2023-08-30 10:17:46,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:46,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 932 transitions. [2023-08-30 10:17:46,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:46,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:46,273 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:46,273 INFO L175 Difference]: Start difference. First operand has 130 places, 132 transitions, 484 flow. Second operand 3 states and 932 transitions. [2023-08-30 10:17:46,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 230 transitions, 1256 flow [2023-08-30 10:17:47,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 230 transitions, 1245 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:17:47,230 INFO L231 Difference]: Finished difference. Result has 132 places, 133 transitions, 494 flow [2023-08-30 10:17:47,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=494, PETRI_PLACES=132, PETRI_TRANSITIONS=133} [2023-08-30 10:17:47,231 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 37 predicate places. [2023-08-30 10:17:47,231 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 133 transitions, 494 flow [2023-08-30 10:17:47,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:47,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:47,235 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:47,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 10:17:47,236 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:17:47,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:47,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1461006573, now seen corresponding path program 1 times [2023-08-30 10:17:47,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:47,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265111421] [2023-08-30 10:17:47,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:47,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:47,328 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:47,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:47,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265111421] [2023-08-30 10:17:47,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265111421] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:47,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702464163] [2023-08-30 10:17:47,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:47,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:47,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:47,337 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:17:47,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 10:17:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:47,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:17:47,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:47,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:47,640 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:47,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702464163] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:47,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:47,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 10:17:47,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372030412] [2023-08-30 10:17:47,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:47,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:17:47,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:47,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:17:47,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:17:47,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 561 [2023-08-30 10:17:47,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 133 transitions, 494 flow. Second operand has 7 states, 7 states have (on average 259.7142857142857) internal successors, (1818), 7 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:47,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:47,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 561 [2023-08-30 10:17:47,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:49,700 INFO L130 PetriNetUnfolder]: 10625/18442 cut-off events. [2023-08-30 10:17:49,701 INFO L131 PetriNetUnfolder]: For 13257/13257 co-relation queries the response was YES. [2023-08-30 10:17:49,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53470 conditions, 18442 events. 10625/18442 cut-off events. For 13257/13257 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 141935 event pairs, 697 based on Foata normal form. 2038/16958 useless extension candidates. Maximal degree in co-relation 53440. Up to 12189 conditions per place. [2023-08-30 10:17:49,949 INFO L137 encePairwiseOnDemand]: 558/561 looper letters, 166 selfloop transitions, 3 changer transitions 0/176 dead transitions. [2023-08-30 10:17:49,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 176 transitions, 990 flow [2023-08-30 10:17:49,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:17:49,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:17:49,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1415 transitions. [2023-08-30 10:17:49,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044563279857398 [2023-08-30 10:17:49,974 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1415 transitions. [2023-08-30 10:17:49,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1415 transitions. [2023-08-30 10:17:49,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:49,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1415 transitions. [2023-08-30 10:17:49,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:49,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 561.0) internal successors, (3366), 6 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:49,978 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 561.0) internal successors, (3366), 6 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:49,979 INFO L175 Difference]: Start difference. First operand has 132 places, 133 transitions, 494 flow. Second operand 5 states and 1415 transitions. [2023-08-30 10:17:49,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 176 transitions, 990 flow [2023-08-30 10:17:50,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 176 transitions, 960 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-30 10:17:50,017 INFO L231 Difference]: Finished difference. Result has 101 places, 86 transitions, 334 flow [2023-08-30 10:17:50,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=101, PETRI_TRANSITIONS=86} [2023-08-30 10:17:50,017 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 6 predicate places. [2023-08-30 10:17:50,017 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 86 transitions, 334 flow [2023-08-30 10:17:50,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 259.7142857142857) internal successors, (1818), 7 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:50,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:50,018 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:50,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-08-30 10:17:50,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:50,219 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:17:50,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:50,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1174391139, now seen corresponding path program 1 times [2023-08-30 10:17:50,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:50,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176017486] [2023-08-30 10:17:50,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:50,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:50,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:50,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176017486] [2023-08-30 10:17:50,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176017486] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:50,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815687429] [2023-08-30 10:17:50,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:50,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:50,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:50,744 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:17:50,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 10:17:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:50,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 10:17:50,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:50,879 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 7 treesize of output 6 [2023-08-30 10:17:51,247 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:17:51,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-30 10:17:51,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:17:51,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:17:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:51,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:52,018 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1272 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1272) |c_~#cache~0.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483647)) is different from false [2023-08-30 10:17:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:17:52,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815687429] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:52,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:52,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-30 10:17:52,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86092031] [2023-08-30 10:17:52,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:52,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:17:52,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:52,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:17:52,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=100, Unknown=3, NotChecked=20, Total=156 [2023-08-30 10:17:53,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 561 [2023-08-30 10:17:53,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 86 transitions, 334 flow. Second operand has 13 states, 13 states have (on average 221.6153846153846) internal successors, (2881), 13 states have internal predecessors, (2881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:53,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:53,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 561 [2023-08-30 10:17:53,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:57,790 INFO L130 PetriNetUnfolder]: 10178/16577 cut-off events. [2023-08-30 10:17:57,790 INFO L131 PetriNetUnfolder]: For 24228/24228 co-relation queries the response was YES. [2023-08-30 10:17:57,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48434 conditions, 16577 events. 10178/16577 cut-off events. For 24228/24228 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 117195 event pairs, 3000 based on Foata normal form. 92/13349 useless extension candidates. Maximal degree in co-relation 48407. Up to 8577 conditions per place. [2023-08-30 10:17:57,866 INFO L137 encePairwiseOnDemand]: 550/561 looper letters, 151 selfloop transitions, 15 changer transitions 0/173 dead transitions. [2023-08-30 10:17:57,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 173 transitions, 945 flow [2023-08-30 10:17:57,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:17:57,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:17:57,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1680 transitions. [2023-08-30 10:17:57,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42780748663101603 [2023-08-30 10:17:57,868 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1680 transitions. [2023-08-30 10:17:57,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1680 transitions. [2023-08-30 10:17:57,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:57,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1680 transitions. [2023-08-30 10:17:57,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 240.0) internal successors, (1680), 7 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:57,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 561.0) internal successors, (4488), 8 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:57,872 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 561.0) internal successors, (4488), 8 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:57,873 INFO L175 Difference]: Start difference. First operand has 101 places, 86 transitions, 334 flow. Second operand 7 states and 1680 transitions. [2023-08-30 10:17:57,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 173 transitions, 945 flow [2023-08-30 10:17:57,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 173 transitions, 926 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 10:17:57,883 INFO L231 Difference]: Finished difference. Result has 106 places, 90 transitions, 398 flow [2023-08-30 10:17:57,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=106, PETRI_TRANSITIONS=90} [2023-08-30 10:17:57,883 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 11 predicate places. [2023-08-30 10:17:57,883 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 90 transitions, 398 flow [2023-08-30 10:17:57,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 221.6153846153846) internal successors, (2881), 13 states have internal predecessors, (2881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:57,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:57,884 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:57,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-30 10:17:58,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:58,088 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:17:58,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:58,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1831636409, now seen corresponding path program 1 times [2023-08-30 10:17:58,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:58,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842399958] [2023-08-30 10:17:58,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:58,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:58,163 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:58,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:58,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842399958] [2023-08-30 10:17:58,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842399958] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:58,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:58,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:17:58,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406764658] [2023-08-30 10:17:58,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:58,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:17:58,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:58,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:17:58,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:17:58,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 561 [2023-08-30 10:17:58,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 90 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:58,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:58,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 561 [2023-08-30 10:17:58,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:00,374 INFO L130 PetriNetUnfolder]: 11763/19273 cut-off events. [2023-08-30 10:18:00,375 INFO L131 PetriNetUnfolder]: For 23713/23713 co-relation queries the response was YES. [2023-08-30 10:18:00,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55321 conditions, 19273 events. 11763/19273 cut-off events. For 23713/23713 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 141632 event pairs, 5586 based on Foata normal form. 0/15427 useless extension candidates. Maximal degree in co-relation 55292. Up to 12956 conditions per place. [2023-08-30 10:18:00,494 INFO L137 encePairwiseOnDemand]: 552/561 looper letters, 109 selfloop transitions, 16 changer transitions 0/132 dead transitions. [2023-08-30 10:18:00,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 132 transitions, 784 flow [2023-08-30 10:18:00,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:18:00,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:18:00,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 852 transitions. [2023-08-30 10:18:00,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062388591800356 [2023-08-30 10:18:00,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 852 transitions. [2023-08-30 10:18:00,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 852 transitions. [2023-08-30 10:18:00,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:00,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 852 transitions. [2023-08-30 10:18:00,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:00,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:00,516 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:00,516 INFO L175 Difference]: Start difference. First operand has 106 places, 90 transitions, 398 flow. Second operand 3 states and 852 transitions. [2023-08-30 10:18:00,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 132 transitions, 784 flow [2023-08-30 10:18:00,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 132 transitions, 765 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:18:00,553 INFO L231 Difference]: Finished difference. Result has 107 places, 96 transitions, 488 flow [2023-08-30 10:18:00,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=107, PETRI_TRANSITIONS=96} [2023-08-30 10:18:00,554 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 12 predicate places. [2023-08-30 10:18:00,554 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 96 transitions, 488 flow [2023-08-30 10:18:00,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:00,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:00,555 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:00,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 10:18:00,555 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:18:00,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:00,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1831636408, now seen corresponding path program 1 times [2023-08-30 10:18:00,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:00,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939126117] [2023-08-30 10:18:00,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:00,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:01,061 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:18:01,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:01,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939126117] [2023-08-30 10:18:01,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939126117] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:18:01,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:18:01,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:18:01,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624120350] [2023-08-30 10:18:01,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:18:01,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:18:01,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:01,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:18:01,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:18:03,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 561 [2023-08-30 10:18:03,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 96 transitions, 488 flow. Second operand has 8 states, 8 states have (on average 244.75) internal successors, (1958), 8 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:03,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:03,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 561 [2023-08-30 10:18:03,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:10,715 INFO L130 PetriNetUnfolder]: 13258/22025 cut-off events. [2023-08-30 10:18:10,715 INFO L131 PetriNetUnfolder]: For 45749/45749 co-relation queries the response was YES. [2023-08-30 10:18:10,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69737 conditions, 22025 events. 13258/22025 cut-off events. For 45749/45749 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 167878 event pairs, 1782 based on Foata normal form. 144/18519 useless extension candidates. Maximal degree in co-relation 69708. Up to 10946 conditions per place. [2023-08-30 10:18:10,870 INFO L137 encePairwiseOnDemand]: 548/561 looper letters, 274 selfloop transitions, 35 changer transitions 0/316 dead transitions. [2023-08-30 10:18:10,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 316 transitions, 1804 flow [2023-08-30 10:18:10,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 10:18:10,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 10:18:10,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2950 transitions. [2023-08-30 10:18:10,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47804245665208234 [2023-08-30 10:18:10,873 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2950 transitions. [2023-08-30 10:18:10,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2950 transitions. [2023-08-30 10:18:10,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:10,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2950 transitions. [2023-08-30 10:18:10,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 268.1818181818182) internal successors, (2950), 11 states have internal predecessors, (2950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:10,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 561.0) internal successors, (6732), 12 states have internal predecessors, (6732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:10,879 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 561.0) internal successors, (6732), 12 states have internal predecessors, (6732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:10,879 INFO L175 Difference]: Start difference. First operand has 107 places, 96 transitions, 488 flow. Second operand 11 states and 2950 transitions. [2023-08-30 10:18:10,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 316 transitions, 1804 flow [2023-08-30 10:18:10,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 316 transitions, 1756 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 10:18:10,934 INFO L231 Difference]: Finished difference. Result has 119 places, 111 transitions, 677 flow [2023-08-30 10:18:10,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=677, PETRI_PLACES=119, PETRI_TRANSITIONS=111} [2023-08-30 10:18:10,934 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 24 predicate places. [2023-08-30 10:18:10,935 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 111 transitions, 677 flow [2023-08-30 10:18:10,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 244.75) internal successors, (1958), 8 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:10,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:10,935 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:10,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 10:18:10,935 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:18:10,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:10,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1035956069, now seen corresponding path program 1 times [2023-08-30 10:18:10,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:10,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771746024] [2023-08-30 10:18:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:10,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:11,598 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:18:11,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:11,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771746024] [2023-08-30 10:18:11,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771746024] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:18:11,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824941998] [2023-08-30 10:18:11,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:11,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:18:11,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:18:11,600 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:18:11,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 10:18:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:11,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 10:18:11,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:18:11,776 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 7 treesize of output 6 [2023-08-30 10:18:12,319 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:18:12,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-30 10:18:12,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:18:12,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:18:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:18:12,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:18:14,035 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:18:14,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824941998] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:18:14,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:18:14,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-30 10:18:14,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624841939] [2023-08-30 10:18:14,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:18:14,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 10:18:14,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:14,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 10:18:14,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=133, Unknown=1, NotChecked=0, Total=182 [2023-08-30 10:18:19,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 561 [2023-08-30 10:18:19,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 111 transitions, 677 flow. Second operand has 14 states, 14 states have (on average 246.78571428571428) internal successors, (3455), 14 states have internal predecessors, (3455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:19,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:19,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 561 [2023-08-30 10:18:19,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:26,012 INFO L130 PetriNetUnfolder]: 15796/26236 cut-off events. [2023-08-30 10:18:26,013 INFO L131 PetriNetUnfolder]: For 81928/81928 co-relation queries the response was YES. [2023-08-30 10:18:26,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88909 conditions, 26236 events. 15796/26236 cut-off events. For 81928/81928 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 202075 event pairs, 2539 based on Foata normal form. 0/21877 useless extension candidates. Maximal degree in co-relation 88875. Up to 15712 conditions per place. [2023-08-30 10:18:26,213 INFO L137 encePairwiseOnDemand]: 551/561 looper letters, 181 selfloop transitions, 27 changer transitions 0/215 dead transitions. [2023-08-30 10:18:26,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 215 transitions, 1629 flow [2023-08-30 10:18:26,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:18:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:18:26,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1604 transitions. [2023-08-30 10:18:26,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47653000594177064 [2023-08-30 10:18:26,216 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1604 transitions. [2023-08-30 10:18:26,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1604 transitions. [2023-08-30 10:18:26,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:26,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1604 transitions. [2023-08-30 10:18:26,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.3333333333333) internal successors, (1604), 6 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:26,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 561.0) internal successors, (3927), 7 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:26,220 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 561.0) internal successors, (3927), 7 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:26,220 INFO L175 Difference]: Start difference. First operand has 119 places, 111 transitions, 677 flow. Second operand 6 states and 1604 transitions. [2023-08-30 10:18:26,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 215 transitions, 1629 flow [2023-08-30 10:18:26,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 215 transitions, 1554 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-08-30 10:18:26,300 INFO L231 Difference]: Finished difference. Result has 125 places, 128 transitions, 903 flow [2023-08-30 10:18:26,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=903, PETRI_PLACES=125, PETRI_TRANSITIONS=128} [2023-08-30 10:18:26,301 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 30 predicate places. [2023-08-30 10:18:26,301 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 128 transitions, 903 flow [2023-08-30 10:18:26,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 246.78571428571428) internal successors, (3455), 14 states have internal predecessors, (3455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:26,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:26,302 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:26,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 10:18:26,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:18:26,507 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:18:26,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:26,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1941591311, now seen corresponding path program 1 times [2023-08-30 10:18:26,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:26,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886777634] [2023-08-30 10:18:26,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:26,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:18:27,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:27,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886777634] [2023-08-30 10:18:27,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886777634] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:18:27,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971627894] [2023-08-30 10:18:27,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:27,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:18:27,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:18:27,387 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:18:27,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-30 10:18:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:27,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 10:18:27,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:18:27,570 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 7 treesize of output 6 [2023-08-30 10:18:27,980 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:18:27,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-30 10:18:28,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:18:28,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2023-08-30 10:18:28,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:18:29,054 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:18:29,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:18:29,365 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1484 Int) (v_ArrVal_1486 (Array Int Int))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| (store (select |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1484)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1486) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)) (< v_ArrVal_1484 (+ |c_t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 1)))) is different from false [2023-08-30 10:18:29,399 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1484 Int) (v_ArrVal_1486 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|))) (or (< v_ArrVal_1484 (+ (select .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| (store .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1484)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1486) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))))) is different from false [2023-08-30 10:18:29,537 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1484 Int) (v_ArrVal_1486 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#cache~0.base|))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#cache~0.base| (store .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1484)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1486) |c_~#cache~0.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)) (< v_ArrVal_1484 (+ (select .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 1))))) is different from false [2023-08-30 10:18:29,612 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1484 Int) (v_ArrVal_1486 (Array Int Int)) (v_ArrVal_1483 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1483))) (let ((.cse1 (select .cse0 |c_~#cache~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#cache~0.base| (store .cse1 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1484)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1486) |c_~#cache~0.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)) (< v_ArrVal_1484 (+ (select .cse1 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 1)))))) is different from false [2023-08-30 10:18:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:18:30,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971627894] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:18:30,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:18:30,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 20 [2023-08-30 10:18:30,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254045758] [2023-08-30 10:18:30,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:18:30,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 10:18:30,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:30,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 10:18:30,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=246, Unknown=7, NotChecked=140, Total=462 [2023-08-30 10:18:30,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 561 [2023-08-30 10:18:30,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 128 transitions, 903 flow. Second operand has 22 states, 22 states have (on average 196.1818181818182) internal successors, (4316), 22 states have internal predecessors, (4316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:30,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:30,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 561 [2023-08-30 10:18:30,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:42,519 INFO L130 PetriNetUnfolder]: 19862/32743 cut-off events. [2023-08-30 10:18:42,520 INFO L131 PetriNetUnfolder]: For 122744/122744 co-relation queries the response was YES. [2023-08-30 10:18:42,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118733 conditions, 32743 events. 19862/32743 cut-off events. For 122744/122744 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 254298 event pairs, 4893 based on Foata normal form. 260/29028 useless extension candidates. Maximal degree in co-relation 118694. Up to 16265 conditions per place. [2023-08-30 10:18:42,960 INFO L137 encePairwiseOnDemand]: 531/561 looper letters, 267 selfloop transitions, 86 changer transitions 0/359 dead transitions. [2023-08-30 10:18:42,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 359 transitions, 2670 flow [2023-08-30 10:18:42,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 10:18:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 10:18:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2394 transitions. [2023-08-30 10:18:42,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3879436071949441 [2023-08-30 10:18:42,964 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2394 transitions. [2023-08-30 10:18:42,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2394 transitions. [2023-08-30 10:18:42,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:42,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2394 transitions. [2023-08-30 10:18:42,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 217.63636363636363) internal successors, (2394), 11 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:42,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 561.0) internal successors, (6732), 12 states have internal predecessors, (6732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:42,997 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 561.0) internal successors, (6732), 12 states have internal predecessors, (6732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:42,998 INFO L175 Difference]: Start difference. First operand has 125 places, 128 transitions, 903 flow. Second operand 11 states and 2394 transitions. [2023-08-30 10:18:42,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 359 transitions, 2670 flow [2023-08-30 10:18:43,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 359 transitions, 2668 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:18:43,095 INFO L231 Difference]: Finished difference. Result has 141 places, 183 transitions, 1719 flow [2023-08-30 10:18:43,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1719, PETRI_PLACES=141, PETRI_TRANSITIONS=183} [2023-08-30 10:18:43,095 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 46 predicate places. [2023-08-30 10:18:43,095 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 183 transitions, 1719 flow [2023-08-30 10:18:43,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 196.1818181818182) internal successors, (4316), 22 states have internal predecessors, (4316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:43,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:43,096 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:43,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-30 10:18:43,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-30 10:18:43,300 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:18:43,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:43,301 INFO L85 PathProgramCache]: Analyzing trace with hash 743474187, now seen corresponding path program 1 times [2023-08-30 10:18:43,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:43,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832593855] [2023-08-30 10:18:43,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:43,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:43,365 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 10:18:43,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:43,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832593855] [2023-08-30 10:18:43,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832593855] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:18:43,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:18:43,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:18:43,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614931715] [2023-08-30 10:18:43,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:18:43,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:18:43,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:43,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:18:43,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:18:43,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 561 [2023-08-30 10:18:43,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 183 transitions, 1719 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:43,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:43,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 561 [2023-08-30 10:18:43,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:49,126 INFO L130 PetriNetUnfolder]: 29463/49172 cut-off events. [2023-08-30 10:18:49,126 INFO L131 PetriNetUnfolder]: For 259650/259674 co-relation queries the response was YES. [2023-08-30 10:18:49,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206986 conditions, 49172 events. 29463/49172 cut-off events. For 259650/259674 co-relation queries the response was YES. Maximal size of possible extension queue 1422. Compared 408218 event pairs, 13628 based on Foata normal form. 357/44495 useless extension candidates. Maximal degree in co-relation 206939. Up to 29850 conditions per place. [2023-08-30 10:18:49,629 INFO L137 encePairwiseOnDemand]: 556/561 looper letters, 308 selfloop transitions, 4 changer transitions 0/320 dead transitions. [2023-08-30 10:18:49,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 320 transitions, 3729 flow [2023-08-30 10:18:49,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:18:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:18:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 876 transitions. [2023-08-30 10:18:49,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204991087344029 [2023-08-30 10:18:49,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 876 transitions. [2023-08-30 10:18:49,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 876 transitions. [2023-08-30 10:18:49,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:49,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 876 transitions. [2023-08-30 10:18:49,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:49,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:49,633 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:49,633 INFO L175 Difference]: Start difference. First operand has 141 places, 183 transitions, 1719 flow. Second operand 3 states and 876 transitions. [2023-08-30 10:18:49,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 320 transitions, 3729 flow [2023-08-30 10:18:50,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 320 transitions, 3637 flow, removed 42 selfloop flow, removed 2 redundant places. [2023-08-30 10:18:50,149 INFO L231 Difference]: Finished difference. Result has 142 places, 185 transitions, 1707 flow [2023-08-30 10:18:50,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1707, PETRI_PLACES=142, PETRI_TRANSITIONS=185} [2023-08-30 10:18:50,150 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 47 predicate places. [2023-08-30 10:18:50,150 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 185 transitions, 1707 flow [2023-08-30 10:18:50,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:50,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:50,150 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:50,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-30 10:18:50,151 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:18:50,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:50,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1941591310, now seen corresponding path program 1 times [2023-08-30 10:18:50,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:50,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571425811] [2023-08-30 10:18:50,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:50,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:18:50,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:50,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571425811] [2023-08-30 10:18:50,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571425811] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:18:50,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703616824] [2023-08-30 10:18:50,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:50,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:18:50,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:18:50,568 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:18:50,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-30 10:18:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:50,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:18:50,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:18:51,158 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:18:51,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-30 10:18:51,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:18:51,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:18:51,690 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:18:51,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:18:51,919 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:18:51,920 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 18 treesize of output 19 [2023-08-30 10:18:51,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-08-30 10:18:52,253 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:18:52,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703616824] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:18:52,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:18:52,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-30 10:18:52,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418659839] [2023-08-30 10:18:52,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:18:52,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 10:18:52,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:52,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 10:18:52,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=137, Unknown=1, NotChecked=0, Total=182 [2023-08-30 10:18:56,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 561 [2023-08-30 10:18:56,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 185 transitions, 1707 flow. Second operand has 14 states, 14 states have (on average 248.71428571428572) internal successors, (3482), 14 states have internal predecessors, (3482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:56,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:56,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 561 [2023-08-30 10:18:56,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:06,223 INFO L130 PetriNetUnfolder]: 31721/53063 cut-off events. [2023-08-30 10:19:06,224 INFO L131 PetriNetUnfolder]: For 273260/273360 co-relation queries the response was YES. [2023-08-30 10:19:06,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226459 conditions, 53063 events. 31721/53063 cut-off events. For 273260/273360 co-relation queries the response was YES. Maximal size of possible extension queue 1471. Compared 446318 event pairs, 13158 based on Foata normal form. 393/47725 useless extension candidates. Maximal degree in co-relation 226411. Up to 27336 conditions per place. [2023-08-30 10:19:06,679 INFO L137 encePairwiseOnDemand]: 527/561 looper letters, 229 selfloop transitions, 84 changer transitions 0/321 dead transitions. [2023-08-30 10:19:06,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 321 transitions, 3166 flow [2023-08-30 10:19:06,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:19:06,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:19:06,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2138 transitions. [2023-08-30 10:19:06,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763814616755793 [2023-08-30 10:19:06,682 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2138 transitions. [2023-08-30 10:19:06,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2138 transitions. [2023-08-30 10:19:06,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:06,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2138 transitions. [2023-08-30 10:19:06,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 267.25) internal successors, (2138), 8 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:06,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 561.0) internal successors, (5049), 9 states have internal predecessors, (5049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:06,686 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 561.0) internal successors, (5049), 9 states have internal predecessors, (5049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:06,686 INFO L175 Difference]: Start difference. First operand has 142 places, 185 transitions, 1707 flow. Second operand 8 states and 2138 transitions. [2023-08-30 10:19:06,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 321 transitions, 3166 flow [2023-08-30 10:19:07,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 321 transitions, 3146 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:19:07,220 INFO L231 Difference]: Finished difference. Result has 151 places, 226 transitions, 2398 flow [2023-08-30 10:19:07,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2398, PETRI_PLACES=151, PETRI_TRANSITIONS=226} [2023-08-30 10:19:07,220 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 56 predicate places. [2023-08-30 10:19:07,221 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 226 transitions, 2398 flow [2023-08-30 10:19:07,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 248.71428571428572) internal successors, (3482), 14 states have internal predecessors, (3482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:07,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:07,221 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:07,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-30 10:19:07,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-30 10:19:07,427 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:19:07,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:07,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1699800320, now seen corresponding path program 1 times [2023-08-30 10:19:07,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:07,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402694559] [2023-08-30 10:19:07,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:07,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:07,499 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 10:19:07,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:07,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402694559] [2023-08-30 10:19:07,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402694559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:19:07,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:19:07,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:19:07,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909955081] [2023-08-30 10:19:07,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:19:07,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:19:07,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:07,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:19:07,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:19:07,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 561 [2023-08-30 10:19:07,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 226 transitions, 2398 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:07,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:07,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 561 [2023-08-30 10:19:07,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:15,233 INFO L130 PetriNetUnfolder]: 34671/58955 cut-off events. [2023-08-30 10:19:15,234 INFO L131 PetriNetUnfolder]: For 396125/396246 co-relation queries the response was YES. [2023-08-30 10:19:15,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292424 conditions, 58955 events. 34671/58955 cut-off events. For 396125/396246 co-relation queries the response was YES. Maximal size of possible extension queue 1641. Compared 512801 event pairs, 12909 based on Foata normal form. 5/52798 useless extension candidates. Maximal degree in co-relation 292372. Up to 34496 conditions per place. [2023-08-30 10:19:15,802 INFO L137 encePairwiseOnDemand]: 552/561 looper letters, 228 selfloop transitions, 96 changer transitions 0/332 dead transitions. [2023-08-30 10:19:15,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 332 transitions, 4162 flow [2023-08-30 10:19:15,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:19:15,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:19:15,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 852 transitions. [2023-08-30 10:19:15,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062388591800356 [2023-08-30 10:19:15,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 852 transitions. [2023-08-30 10:19:15,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 852 transitions. [2023-08-30 10:19:15,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:15,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 852 transitions. [2023-08-30 10:19:15,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:15,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:15,806 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:15,806 INFO L175 Difference]: Start difference. First operand has 151 places, 226 transitions, 2398 flow. Second operand 3 states and 852 transitions. [2023-08-30 10:19:15,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 332 transitions, 4162 flow [2023-08-30 10:19:16,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 332 transitions, 4025 flow, removed 67 selfloop flow, removed 2 redundant places. [2023-08-30 10:19:16,724 INFO L231 Difference]: Finished difference. Result has 153 places, 269 transitions, 3333 flow [2023-08-30 10:19:16,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3333, PETRI_PLACES=153, PETRI_TRANSITIONS=269} [2023-08-30 10:19:16,725 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 58 predicate places. [2023-08-30 10:19:16,725 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 269 transitions, 3333 flow [2023-08-30 10:19:16,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:16,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:16,725 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:16,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-30 10:19:16,725 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:19:16,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:16,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1699800321, now seen corresponding path program 1 times [2023-08-30 10:19:16,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:16,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720728983] [2023-08-30 10:19:16,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:16,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:17,163 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:19:17,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:17,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720728983] [2023-08-30 10:19:17,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720728983] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:19:17,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222532398] [2023-08-30 10:19:17,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:17,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:19:17,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:19:17,165 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:19:17,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-30 10:19:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:17,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 10:19:17,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:19:17,323 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 7 treesize of output 6 [2023-08-30 10:19:17,653 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:19:17,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-30 10:19:17,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:19:17,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:19:18,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2023-08-30 10:19:18,482 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:19:18,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:19:19,531 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:19:19,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222532398] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:19:19,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:19:19,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 10:19:19,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304525162] [2023-08-30 10:19:19,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:19:19,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 10:19:19,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:19,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 10:19:19,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=275, Unknown=2, NotChecked=0, Total=342 [2023-08-30 10:19:21,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 561 [2023-08-30 10:19:21,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 269 transitions, 3333 flow. Second operand has 19 states, 19 states have (on average 219.57894736842104) internal successors, (4172), 19 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:21,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:21,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 561 [2023-08-30 10:19:21,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:23,794 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1712 (Array Int Int)) (|t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| Int)) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1712) |c_~#cache~0.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|)))) (forall ((|v_ULTIMATE.start_main_~#t_ids~0#1.base_126| Int)) (or (forall ((v_ArrVal_1712 (Array Int Int)) (|t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| Int)) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~#t_ids~0#1.base_126| v_ArrVal_1712) |c_~#cache~0.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|)))) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~#t_ids~0#1.base_126|))))) (exists ((v_ArrVal_1713 Int)) (let ((.cse0 ((as const (Array Int Int)) 0))) (and (<= (+ (select .cse0 |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|) 1) v_ArrVal_1713) (= (store .cse0 |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1713) (select |c_#memory_int| 4))))) (= 4 |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|)) is different from false [2023-08-30 10:19:24,678 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1712 (Array Int Int)) (|t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| Int)) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1712) |c_~#cache~0.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|)))) (forall ((|v_ULTIMATE.start_main_~#t_ids~0#1.base_126| Int)) (or (forall ((v_ArrVal_1712 (Array Int Int)) (|t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| Int)) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~#t_ids~0#1.base_126| v_ArrVal_1712) |c_~#cache~0.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|)))) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~#t_ids~0#1.base_126|))))) (= |c_t_funThread2of2ForFork0_cache_entry_addref_#t~post35#1| 0)) is different from false [2023-08-30 10:19:45,363 INFO L130 PetriNetUnfolder]: 41615/71337 cut-off events. [2023-08-30 10:19:45,363 INFO L131 PetriNetUnfolder]: For 662326/662338 co-relation queries the response was YES. [2023-08-30 10:19:45,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383570 conditions, 71337 events. 41615/71337 cut-off events. For 662326/662338 co-relation queries the response was YES. Maximal size of possible extension queue 2038. Compared 642184 event pairs, 6307 based on Foata normal form. 608/67119 useless extension candidates. Maximal degree in co-relation 383518. Up to 37599 conditions per place. [2023-08-30 10:19:46,070 INFO L137 encePairwiseOnDemand]: 528/561 looper letters, 647 selfloop transitions, 285 changer transitions 0/940 dead transitions. [2023-08-30 10:19:46,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 940 transitions, 12040 flow [2023-08-30 10:19:46,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 10:19:46,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 10:19:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4793 transitions. [2023-08-30 10:19:46,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4271836007130125 [2023-08-30 10:19:46,080 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4793 transitions. [2023-08-30 10:19:46,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4793 transitions. [2023-08-30 10:19:46,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:46,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4793 transitions. [2023-08-30 10:19:46,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 239.65) internal successors, (4793), 20 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:46,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 561.0) internal successors, (11781), 21 states have internal predecessors, (11781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:46,118 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 561.0) internal successors, (11781), 21 states have internal predecessors, (11781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:46,118 INFO L175 Difference]: Start difference. First operand has 153 places, 269 transitions, 3333 flow. Second operand 20 states and 4793 transitions. [2023-08-30 10:19:46,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 940 transitions, 12040 flow [2023-08-30 10:19:47,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 940 transitions, 11650 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 10:19:47,238 INFO L231 Difference]: Finished difference. Result has 180 places, 508 transitions, 7864 flow [2023-08-30 10:19:47,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=3137, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=7864, PETRI_PLACES=180, PETRI_TRANSITIONS=508} [2023-08-30 10:19:47,239 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 85 predicate places. [2023-08-30 10:19:47,239 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 508 transitions, 7864 flow [2023-08-30 10:19:47,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 219.57894736842104) internal successors, (4172), 19 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:47,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:47,239 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:47,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-30 10:19:47,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:19:47,444 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:19:47,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:47,444 INFO L85 PathProgramCache]: Analyzing trace with hash -556935535, now seen corresponding path program 1 times [2023-08-30 10:19:47,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:47,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366621021] [2023-08-30 10:19:47,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:47,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:19:47,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:47,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366621021] [2023-08-30 10:19:47,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366621021] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:19:47,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:19:47,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:19:47,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222777090] [2023-08-30 10:19:47,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:19:47,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:19:47,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:47,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:19:47,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:19:47,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 561 [2023-08-30 10:19:47,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 508 transitions, 7864 flow. Second operand has 3 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:47,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:47,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 561 [2023-08-30 10:19:47,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:59,929 INFO L130 PetriNetUnfolder]: 40133/69095 cut-off events. [2023-08-30 10:19:59,930 INFO L131 PetriNetUnfolder]: For 814497/814601 co-relation queries the response was YES. [2023-08-30 10:20:00,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430288 conditions, 69095 events. 40133/69095 cut-off events. For 814497/814601 co-relation queries the response was YES. Maximal size of possible extension queue 1955. Compared 622699 event pairs, 16456 based on Foata normal form. 12/65317 useless extension candidates. Maximal degree in co-relation 430225. Up to 59272 conditions per place. [2023-08-30 10:20:00,796 INFO L137 encePairwiseOnDemand]: 557/561 looper letters, 598 selfloop transitions, 18 changer transitions 0/624 dead transitions. [2023-08-30 10:20:00,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 624 transitions, 11103 flow [2023-08-30 10:20:00,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:20:00,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:20:00,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 852 transitions. [2023-08-30 10:20:00,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062388591800356 [2023-08-30 10:20:00,798 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 852 transitions. [2023-08-30 10:20:00,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 852 transitions. [2023-08-30 10:20:00,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:00,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 852 transitions. [2023-08-30 10:20:00,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:00,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:00,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:00,800 INFO L175 Difference]: Start difference. First operand has 180 places, 508 transitions, 7864 flow. Second operand 3 states and 852 transitions. [2023-08-30 10:20:00,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 624 transitions, 11103 flow [2023-08-30 10:20:03,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 624 transitions, 10452 flow, removed 274 selfloop flow, removed 4 redundant places. [2023-08-30 10:20:03,959 INFO L231 Difference]: Finished difference. Result has 177 places, 505 transitions, 7370 flow [2023-08-30 10:20:03,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=7334, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=7370, PETRI_PLACES=177, PETRI_TRANSITIONS=505} [2023-08-30 10:20:03,959 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 82 predicate places. [2023-08-30 10:20:03,959 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 505 transitions, 7370 flow [2023-08-30 10:20:03,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:03,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:03,960 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:03,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-30 10:20:03,960 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:20:03,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:03,960 INFO L85 PathProgramCache]: Analyzing trace with hash -556935686, now seen corresponding path program 1 times [2023-08-30 10:20:03,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:03,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333785449] [2023-08-30 10:20:03,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:03,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:04,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:04,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333785449] [2023-08-30 10:20:04,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333785449] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:20:04,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:20:04,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:20:04,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624978726] [2023-08-30 10:20:04,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:20:04,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:20:04,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:04,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:20:04,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:20:04,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 561 [2023-08-30 10:20:04,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 505 transitions, 7370 flow. Second operand has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:04,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:04,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 561 [2023-08-30 10:20:04,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:15,443 INFO L130 PetriNetUnfolder]: 38590/66235 cut-off events. [2023-08-30 10:20:15,444 INFO L131 PetriNetUnfolder]: For 752127/752267 co-relation queries the response was YES. [2023-08-30 10:20:16,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408910 conditions, 66235 events. 38590/66235 cut-off events. For 752127/752267 co-relation queries the response was YES. Maximal size of possible extension queue 1880. Compared 591072 event pairs, 15535 based on Foata normal form. 1005/64509 useless extension candidates. Maximal degree in co-relation 408848. Up to 62616 conditions per place. [2023-08-30 10:20:16,613 INFO L137 encePairwiseOnDemand]: 559/561 looper letters, 549 selfloop transitions, 3 changer transitions 0/560 dead transitions. [2023-08-30 10:20:16,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 560 transitions, 9168 flow [2023-08-30 10:20:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:20:16,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:20:16,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 853 transitions. [2023-08-30 10:20:16,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068330362448009 [2023-08-30 10:20:16,615 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 853 transitions. [2023-08-30 10:20:16,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 853 transitions. [2023-08-30 10:20:16,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:16,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 853 transitions. [2023-08-30 10:20:16,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:16,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:16,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:16,617 INFO L175 Difference]: Start difference. First operand has 177 places, 505 transitions, 7370 flow. Second operand 3 states and 853 transitions. [2023-08-30 10:20:16,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 560 transitions, 9168 flow [2023-08-30 10:20:19,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 560 transitions, 9150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:20:19,045 INFO L231 Difference]: Finished difference. Result has 177 places, 502 transitions, 7334 flow [2023-08-30 10:20:19,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=7328, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=7334, PETRI_PLACES=177, PETRI_TRANSITIONS=502} [2023-08-30 10:20:19,046 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 82 predicate places. [2023-08-30 10:20:19,046 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 502 transitions, 7334 flow [2023-08-30 10:20:19,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:19,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:19,046 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:19,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-30 10:20:19,046 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:20:19,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:19,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1154066433, now seen corresponding path program 1 times [2023-08-30 10:20:19,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:19,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331796844] [2023-08-30 10:20:19,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:19,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:19,500 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:20:19,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:19,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331796844] [2023-08-30 10:20:19,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331796844] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:20:19,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698050739] [2023-08-30 10:20:19,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:19,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:19,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:20:19,509 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:20:19,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-30 10:20:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:19,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 10:20:19,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:20:19,769 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 7 treesize of output 6 [2023-08-30 10:20:20,202 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:20:20,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-30 10:20:20,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:20:20,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:20:20,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2023-08-30 10:20:21,241 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:20:21,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:20:21,703 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1873 (Array Int Int)) (|t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| Int)) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1873) |c_~#cache~0.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|)))) is different from false [2023-08-30 10:20:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-30 10:20:22,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698050739] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:20:22,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:20:22,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 10:20:22,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304380384] [2023-08-30 10:20:22,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:20:22,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 10:20:22,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:22,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 10:20:22,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=247, Unknown=1, NotChecked=32, Total=342 [2023-08-30 10:20:22,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 561 [2023-08-30 10:20:22,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 502 transitions, 7334 flow. Second operand has 19 states, 19 states have (on average 215.73684210526315) internal successors, (4099), 19 states have internal predecessors, (4099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:22,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:22,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 561 [2023-08-30 10:20:22,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:43,387 INFO L130 PetriNetUnfolder]: 39174/67134 cut-off events. [2023-08-30 10:20:43,388 INFO L131 PetriNetUnfolder]: For 767145/767157 co-relation queries the response was YES. [2023-08-30 10:20:43,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414078 conditions, 67134 events. 39174/67134 cut-off events. For 767145/767157 co-relation queries the response was YES. Maximal size of possible extension queue 1946. Compared 599996 event pairs, 5827 based on Foata normal form. 310/64757 useless extension candidates. Maximal degree in co-relation 414015. Up to 35627 conditions per place. [2023-08-30 10:20:44,323 INFO L137 encePairwiseOnDemand]: 546/561 looper letters, 607 selfloop transitions, 260 changer transitions 0/875 dead transitions. [2023-08-30 10:20:44,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 875 transitions, 13219 flow [2023-08-30 10:20:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 10:20:44,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 10:20:44,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3526 transitions. [2023-08-30 10:20:44,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4190136660724896 [2023-08-30 10:20:44,327 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3526 transitions. [2023-08-30 10:20:44,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3526 transitions. [2023-08-30 10:20:44,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:44,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3526 transitions. [2023-08-30 10:20:44,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 235.06666666666666) internal successors, (3526), 15 states have internal predecessors, (3526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:44,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 561.0) internal successors, (8976), 16 states have internal predecessors, (8976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:44,344 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 561.0) internal successors, (8976), 16 states have internal predecessors, (8976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:44,345 INFO L175 Difference]: Start difference. First operand has 177 places, 502 transitions, 7334 flow. Second operand 15 states and 3526 transitions. [2023-08-30 10:20:44,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 875 transitions, 13219 flow [2023-08-30 10:20:46,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 875 transitions, 13206 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:20:46,981 INFO L231 Difference]: Finished difference. Result has 193 places, 525 transitions, 8555 flow [2023-08-30 10:20:46,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=7331, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=8555, PETRI_PLACES=193, PETRI_TRANSITIONS=525} [2023-08-30 10:20:46,988 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 98 predicate places. [2023-08-30 10:20:46,988 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 525 transitions, 8555 flow [2023-08-30 10:20:46,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 215.73684210526315) internal successors, (4099), 19 states have internal predecessors, (4099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:46,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:46,989 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:46,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-08-30 10:20:47,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:47,194 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:20:47,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:47,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1347950728, now seen corresponding path program 2 times [2023-08-30 10:20:47,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:47,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513447426] [2023-08-30 10:20:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:47,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:20:47,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:47,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513447426] [2023-08-30 10:20:47,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513447426] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:20:47,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008524481] [2023-08-30 10:20:47,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:20:47,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:47,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:20:47,787 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:20:47,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-30 10:20:47,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:20:47,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:20:47,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 10:20:47,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:20:47,942 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 7 treesize of output 6 [2023-08-30 10:20:48,303 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:20:48,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-30 10:20:48,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:20:48,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:20:49,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2023-08-30 10:20:49,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:20:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:20:49,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:20:49,743 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1959 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1959) |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))) is different from false [2023-08-30 10:20:49,800 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1957 Int) (v_ArrVal_1959 (Array Int Int))) (or (< v_ArrVal_1957 (+ |c_t_funThread2of2ForFork0_cache_entry_addref_#t~post35#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| (store (select |c_#memory_int| |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1957)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1959) |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)))) is different from false [2023-08-30 10:20:49,834 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1957 Int) (|t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1959 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|))) (or (< v_ArrVal_1957 (+ (select .cse0 |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base| (store .cse0 |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1957)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1959) |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))))) is different from false [2023-08-30 10:20:49,925 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1957 Int) (|t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1959 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#cache~0.base|))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#cache~0.base| (store .cse0 |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1957)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1959) |c_~#cache~0.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)) (< v_ArrVal_1957 (+ (select .cse0 |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|) 1))))) is different from false [2023-08-30 10:20:50,063 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1956 (Array Int Int)) (v_ArrVal_1957 Int) (|t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1959 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1956))) (let ((.cse0 (select .cse1 |c_~#cache~0.base|))) (or (< v_ArrVal_1957 (+ (select .cse0 |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ 2147483648 (select (select (store (store .cse1 |c_~#cache~0.base| (store .cse0 |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1957)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1959) |c_~#cache~0.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|))))))) is different from false [2023-08-30 10:20:50,611 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 5 not checked. [2023-08-30 10:20:50,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008524481] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:20:50,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:20:50,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 18 [2023-08-30 10:20:50,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391757724] [2023-08-30 10:20:50,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:20:50,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 10:20:50,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:50,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 10:20:50,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=169, Unknown=5, NotChecked=150, Total=380 [2023-08-30 10:20:51,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 561 [2023-08-30 10:20:51,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 525 transitions, 8555 flow. Second operand has 20 states, 20 states have (on average 215.55) internal successors, (4311), 20 states have internal predecessors, (4311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:51,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:51,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 561 [2023-08-30 10:20:51,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:21:08,023 INFO L130 PetriNetUnfolder]: 39400/67577 cut-off events. [2023-08-30 10:21:08,023 INFO L131 PetriNetUnfolder]: For 872228/872240 co-relation queries the response was YES. [2023-08-30 10:21:08,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435546 conditions, 67577 events. 39400/67577 cut-off events. For 872228/872240 co-relation queries the response was YES. Maximal size of possible extension queue 1966. Compared 603778 event pairs, 7003 based on Foata normal form. 160/65050 useless extension candidates. Maximal degree in co-relation 435479. Up to 38040 conditions per place. [2023-08-30 10:21:09,006 INFO L137 encePairwiseOnDemand]: 547/561 looper letters, 466 selfloop transitions, 266 changer transitions 0/740 dead transitions. [2023-08-30 10:21:09,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 740 transitions, 12458 flow [2023-08-30 10:21:09,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:21:09,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:21:09,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2341 transitions. [2023-08-30 10:21:09,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41729055258467024 [2023-08-30 10:21:09,008 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2341 transitions. [2023-08-30 10:21:09,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2341 transitions. [2023-08-30 10:21:09,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:21:09,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2341 transitions. [2023-08-30 10:21:09,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 234.1) internal successors, (2341), 10 states have internal predecessors, (2341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:09,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 561.0) internal successors, (6171), 11 states have internal predecessors, (6171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:09,017 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 561.0) internal successors, (6171), 11 states have internal predecessors, (6171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:09,017 INFO L175 Difference]: Start difference. First operand has 193 places, 525 transitions, 8555 flow. Second operand 10 states and 2341 transitions. [2023-08-30 10:21:09,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 740 transitions, 12458 flow [2023-08-30 10:21:12,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 740 transitions, 12251 flow, removed 16 selfloop flow, removed 10 redundant places. [2023-08-30 10:21:12,793 INFO L231 Difference]: Finished difference. Result has 195 places, 557 transitions, 9954 flow [2023-08-30 10:21:12,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=8362, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9954, PETRI_PLACES=195, PETRI_TRANSITIONS=557} [2023-08-30 10:21:12,802 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 100 predicate places. [2023-08-30 10:21:12,802 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 557 transitions, 9954 flow [2023-08-30 10:21:12,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 215.55) internal successors, (4311), 20 states have internal predecessors, (4311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:12,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:21:12,803 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:21:12,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-30 10:21:13,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:21:13,008 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:21:13,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:21:13,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1347950729, now seen corresponding path program 2 times [2023-08-30 10:21:13,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:21:13,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281878773] [2023-08-30 10:21:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:21:13,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:21:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:21:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:21:14,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:21:14,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281878773] [2023-08-30 10:21:14,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281878773] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:21:14,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254017807] [2023-08-30 10:21:14,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:21:14,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:21:14,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:21:14,383 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:21:14,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-30 10:21:14,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:21:14,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:21:14,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:21:14,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:21:14,933 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:21:14,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-30 10:21:15,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:21:15,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:21:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:21:15,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:21:16,091 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:21:16,092 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 18 treesize of output 19 [2023-08-30 10:21:16,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-08-30 10:21:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:21:16,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254017807] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:21:16,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:21:16,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 19 [2023-08-30 10:21:16,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182208651] [2023-08-30 10:21:16,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:21:16,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 10:21:16,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:21:16,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 10:21:16,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=360, Unknown=1, NotChecked=0, Total=420 [2023-08-30 10:21:23,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 561 [2023-08-30 10:21:23,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 557 transitions, 9954 flow. Second operand has 21 states, 21 states have (on average 215.52380952380952) internal successors, (4526), 21 states have internal predecessors, (4526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:23,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:21:23,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 561 [2023-08-30 10:21:23,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:21:50,946 INFO L130 PetriNetUnfolder]: 45068/78906 cut-off events. [2023-08-30 10:21:50,947 INFO L131 PetriNetUnfolder]: For 1096446/1096450 co-relation queries the response was YES. [2023-08-30 10:21:51,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516142 conditions, 78906 events. 45068/78906 cut-off events. For 1096446/1096450 co-relation queries the response was YES. Maximal size of possible extension queue 2128. Compared 728243 event pairs, 8394 based on Foata normal form. 402/76201 useless extension candidates. Maximal degree in co-relation 516072. Up to 33929 conditions per place. [2023-08-30 10:21:52,270 INFO L137 encePairwiseOnDemand]: 526/561 looper letters, 807 selfloop transitions, 356 changer transitions 0/1171 dead transitions. [2023-08-30 10:21:52,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 1171 transitions, 20415 flow [2023-08-30 10:21:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 10:21:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 10:21:52,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4190 transitions. [2023-08-30 10:21:52,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41493365022776785 [2023-08-30 10:21:52,301 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4190 transitions. [2023-08-30 10:21:52,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4190 transitions. [2023-08-30 10:21:52,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:21:52,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4190 transitions. [2023-08-30 10:21:52,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 232.77777777777777) internal successors, (4190), 18 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:52,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 561.0) internal successors, (10659), 19 states have internal predecessors, (10659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:52,308 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 561.0) internal successors, (10659), 19 states have internal predecessors, (10659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:52,308 INFO L175 Difference]: Start difference. First operand has 195 places, 557 transitions, 9954 flow. Second operand 18 states and 4190 transitions. [2023-08-30 10:21:52,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 1171 transitions, 20415 flow [2023-08-30 10:21:59,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 1171 transitions, 20057 flow, removed 80 selfloop flow, removed 5 redundant places. [2023-08-30 10:21:59,178 INFO L231 Difference]: Finished difference. Result has 217 places, 724 transitions, 14453 flow [2023-08-30 10:21:59,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=9526, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=14453, PETRI_PLACES=217, PETRI_TRANSITIONS=724} [2023-08-30 10:21:59,179 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 122 predicate places. [2023-08-30 10:21:59,179 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 724 transitions, 14453 flow [2023-08-30 10:21:59,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 215.52380952380952) internal successors, (4526), 21 states have internal predecessors, (4526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:59,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:21:59,180 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:21:59,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-30 10:21:59,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-08-30 10:21:59,385 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 10:21:59,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:21:59,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1416440167, now seen corresponding path program 1 times [2023-08-30 10:21:59,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:21:59,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837781460] [2023-08-30 10:21:59,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:21:59,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:21:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:21:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:21:59,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:21:59,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837781460] [2023-08-30 10:21:59,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837781460] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:21:59,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:21:59,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:21:59,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136801238] [2023-08-30 10:21:59,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:21:59,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:21:59,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:21:59,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:21:59,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:22:00,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 561 [2023-08-30 10:22:00,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 724 transitions, 14453 flow. Second operand has 7 states, 7 states have (on average 238.57142857142858) internal successors, (1670), 7 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:00,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:00,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 561 [2023-08-30 10:22:00,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand