./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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_24-sound_lock_racing.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 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:11:24,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:11:24,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:11:24,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:11:24,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:11:24,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:11:24,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:11:24,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:11:24,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:11:24,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:11:24,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:11:24,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:11:24,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:11:24,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:11:24,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:11:24,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:11:24,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:11:24,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:11:24,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:11:24,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:11:24,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:11:24,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:11:24,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:11:24,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:11:24,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:11:24,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:11:24,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:11:24,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:11:24,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:11:24,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:11:24,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:11:24,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:11:24,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:11:24,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:11:24,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:11:24,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:11:24,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:11:24,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:11:24,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:11:24,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:11:24,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:11:24,381 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:11:24,405 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:11:24,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:11:24,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:11:24,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:11:24,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:11:24,407 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:11:24,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:11:24,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:11:24,408 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:11:24,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:11:24,408 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:11:24,408 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:11:24,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:11:24,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:11:24,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:11:24,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:11:24,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:11:24,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:11:24,410 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:11:24,410 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:11:24,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:11:24,411 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:11:24,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:11:24,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:11:24,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:11:24,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:11:24,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:11:24,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:11:24,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:11:24,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:11:24,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:11:24,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:11:24,413 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:11:24,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:11:24,414 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:11:24,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:11:24,414 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:11:24,414 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:11:24,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:11:24,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:11:24,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:11:24,725 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:11:24,726 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:11:24,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2023-08-30 14:11:25,892 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:11:26,178 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:11:26,179 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2023-08-30 14:11:26,195 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3accb2a35/ee9f9c7364eb4a738db27a63425e3231/FLAG586cc0f78 [2023-08-30 14:11:26,221 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3accb2a35/ee9f9c7364eb4a738db27a63425e3231 [2023-08-30 14:11:26,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:11:26,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:11:26,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:11:26,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:11:26,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:11:26,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:11:26" (1/1) ... [2023-08-30 14:11:26,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@225619b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:26, skipping insertion in model container [2023-08-30 14:11:26,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:11:26" (1/1) ... [2023-08-30 14:11:26,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:11:26,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:11:26,586 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_24-sound_lock_racing.i[30176,30189] [2023-08-30 14:11:26,614 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:11:26,630 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:11:26,668 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_24-sound_lock_racing.i[30176,30189] [2023-08-30 14:11:26,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:11:26,733 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:11:26,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:26 WrapperNode [2023-08-30 14:11:26,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:11:26,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:11:26,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:11:26,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:11:26,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:26" (1/1) ... [2023-08-30 14:11:26,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:26" (1/1) ... [2023-08-30 14:11:26,799 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-08-30 14:11:26,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:11:26,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:11:26,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:11:26,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:11:26,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:26" (1/1) ... [2023-08-30 14:11:26,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:26" (1/1) ... [2023-08-30 14:11:26,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:26" (1/1) ... [2023-08-30 14:11:26,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:26" (1/1) ... [2023-08-30 14:11:26,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:26" (1/1) ... [2023-08-30 14:11:26,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:26" (1/1) ... [2023-08-30 14:11:26,844 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:26" (1/1) ... [2023-08-30 14:11:26,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:26" (1/1) ... [2023-08-30 14:11:26,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:11:26,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:11:26,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:11:26,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:11:26,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:26" (1/1) ... [2023-08-30 14:11:26,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:11:26,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:11:26,894 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 14:11:26,922 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 14:11:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:11:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:11:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:11:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:11:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:11:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:11:26,940 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:11:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:11:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:11:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:11:26,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:11:26,946 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 14:11:27,108 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:11:27,116 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:11:27,366 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:11:27,373 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:11:27,373 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 14:11:27,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:11:27 BoogieIcfgContainer [2023-08-30 14:11:27,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:11:27,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:11:27,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:11:27,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:11:27,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:11:26" (1/3) ... [2023-08-30 14:11:27,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15cbae56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:11:27, skipping insertion in model container [2023-08-30 14:11:27,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:26" (2/3) ... [2023-08-30 14:11:27,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15cbae56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:11:27, skipping insertion in model container [2023-08-30 14:11:27,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:11:27" (3/3) ... [2023-08-30 14:11:27,391 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2023-08-30 14:11:27,398 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:11:27,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:11:27,407 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 14:11:27,408 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:11:27,455 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:11:27,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 129 transitions, 266 flow [2023-08-30 14:11:27,539 INFO L130 PetriNetUnfolder]: 18/161 cut-off events. [2023-08-30 14:11:27,539 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:11:27,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 161 events. 18/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 335 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-30 14:11:27,545 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 129 transitions, 266 flow [2023-08-30 14:11:27,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 126 transitions, 260 flow [2023-08-30 14:11:27,552 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:11:27,570 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 126 transitions, 260 flow [2023-08-30 14:11:27,572 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 126 transitions, 260 flow [2023-08-30 14:11:27,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 126 transitions, 260 flow [2023-08-30 14:11:27,604 INFO L130 PetriNetUnfolder]: 17/158 cut-off events. [2023-08-30 14:11:27,605 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:11:27,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 158 events. 17/158 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 330 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-30 14:11:27,608 INFO L119 LiptonReduction]: Number of co-enabled transitions 3024 [2023-08-30 14:11:31,430 INFO L134 LiptonReduction]: Checked pairs total: 4791 [2023-08-30 14:11:31,430 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-08-30 14:11:31,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:11:31,455 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;@2122e100, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:11:31,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 14:11:31,464 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2023-08-30 14:11:31,465 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:11:31,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:31,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:11:31,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:11:31,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:31,473 INFO L85 PathProgramCache]: Analyzing trace with hash 15265284, now seen corresponding path program 1 times [2023-08-30 14:11:31,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:31,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800525566] [2023-08-30 14:11:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:31,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:31,759 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 14:11:31,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:31,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800525566] [2023-08-30 14:11:31,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800525566] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:31,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:31,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:11:31,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888957873] [2023-08-30 14:11:31,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:31,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:31,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:31,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:31,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:31,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 244 [2023-08-30 14:11:31,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 38 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:31,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:31,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 244 [2023-08-30 14:11:31,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:31,934 INFO L130 PetriNetUnfolder]: 108/247 cut-off events. [2023-08-30 14:11:31,935 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:11:31,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 247 events. 108/247 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1083 event pairs, 24 based on Foata normal form. 10/190 useless extension candidates. Maximal degree in co-relation 477. Up to 179 conditions per place. [2023-08-30 14:11:31,940 INFO L137 encePairwiseOnDemand]: 230/244 looper letters, 36 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2023-08-30 14:11:31,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 41 transitions, 168 flow [2023-08-30 14:11:31,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:11:31,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:11:31,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-08-30 14:11:31,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5273224043715847 [2023-08-30 14:11:31,963 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-08-30 14:11:31,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-08-30 14:11:31,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:31,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-08-30 14:11:31,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:31,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:31,984 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:31,985 INFO L175 Difference]: Start difference. First operand has 33 places, 38 transitions, 84 flow. Second operand 3 states and 386 transitions. [2023-08-30 14:11:31,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 41 transitions, 168 flow [2023-08-30 14:11:31,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:11:31,990 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 82 flow [2023-08-30 14:11:31,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-30 14:11:31,996 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2023-08-30 14:11:31,996 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 82 flow [2023-08-30 14:11:31,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:31,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:31,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:11:31,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:11:31,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:11:32,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:32,002 INFO L85 PathProgramCache]: Analyzing trace with hash 15265283, now seen corresponding path program 1 times [2023-08-30 14:11:32,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:32,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536327154] [2023-08-30 14:11:32,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:32,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:32,139 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 14:11:32,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:32,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536327154] [2023-08-30 14:11:32,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536327154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:32,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:32,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:11:32,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013683855] [2023-08-30 14:11:32,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:32,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:32,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:32,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:32,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:32,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-30 14:11:32,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:32,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:32,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-30 14:11:32,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:32,274 INFO L130 PetriNetUnfolder]: 96/232 cut-off events. [2023-08-30 14:11:32,275 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-08-30 14:11:32,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 232 events. 96/232 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1021 event pairs, 0 based on Foata normal form. 13/208 useless extension candidates. Maximal degree in co-relation 490. Up to 204 conditions per place. [2023-08-30 14:11:32,279 INFO L137 encePairwiseOnDemand]: 241/244 looper letters, 36 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-30 14:11:32,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 180 flow [2023-08-30 14:11:32,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:11:32,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:11:32,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-08-30 14:11:32,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081967213114754 [2023-08-30 14:11:32,281 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-08-30 14:11:32,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-08-30 14:11:32,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:32,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-08-30 14:11:32,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:32,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:32,285 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:32,286 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 82 flow. Second operand 3 states and 372 transitions. [2023-08-30 14:11:32,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 180 flow [2023-08-30 14:11:32,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:11:32,290 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 78 flow [2023-08-30 14:11:32,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-30 14:11:32,291 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-08-30 14:11:32,291 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 78 flow [2023-08-30 14:11:32,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:32,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:32,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:11:32,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:11:32,293 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:11:32,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:32,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1785025199, now seen corresponding path program 1 times [2023-08-30 14:11:32,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:32,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790635636] [2023-08-30 14:11:32,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:32,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:32,349 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 14:11:32,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:32,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790635636] [2023-08-30 14:11:32,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790635636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:32,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:32,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:11:32,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766881763] [2023-08-30 14:11:32,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:32,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:32,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:32,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:32,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:32,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 244 [2023-08-30 14:11:32,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:32,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:32,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 244 [2023-08-30 14:11:32,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:32,408 INFO L130 PetriNetUnfolder]: 80/189 cut-off events. [2023-08-30 14:11:32,408 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-08-30 14:11:32,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 189 events. 80/189 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 648 event pairs, 16 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 402. Up to 140 conditions per place. [2023-08-30 14:11:32,410 INFO L137 encePairwiseOnDemand]: 240/244 looper letters, 30 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-08-30 14:11:32,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 162 flow [2023-08-30 14:11:32,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:11:32,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:11:32,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-08-30 14:11:32,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040983606557377 [2023-08-30 14:11:32,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-08-30 14:11:32,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-08-30 14:11:32,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:32,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-08-30 14:11:32,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:32,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:32,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:32,416 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 78 flow. Second operand 3 states and 369 transitions. [2023-08-30 14:11:32,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 162 flow [2023-08-30 14:11:32,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:11:32,417 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 74 flow [2023-08-30 14:11:32,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-30 14:11:32,418 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2023-08-30 14:11:32,418 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 74 flow [2023-08-30 14:11:32,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:32,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:32,419 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:11:32,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:11:32,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:11:32,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:32,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1785050832, now seen corresponding path program 1 times [2023-08-30 14:11:32,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:32,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881642716] [2023-08-30 14:11:32,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:32,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:11:32,435 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:11:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:11:32,460 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:11:32,461 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:11:32,462 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-08-30 14:11:32,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-30 14:11:32,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-30 14:11:32,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-30 14:11:32,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-30 14:11:32,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-30 14:11:32,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-30 14:11:32,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-30 14:11:32,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-30 14:11:32,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-30 14:11:32,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-30 14:11:32,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-30 14:11:32,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-30 14:11:32,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:11:32,466 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-30 14:11:32,469 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:11:32,469 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:11:32,497 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:11:32,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 167 transitions, 352 flow [2023-08-30 14:11:32,524 INFO L130 PetriNetUnfolder]: 32/267 cut-off events. [2023-08-30 14:11:32,524 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:11:32,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 267 events. 32/267 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 731 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2023-08-30 14:11:32,526 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 167 transitions, 352 flow [2023-08-30 14:11:32,528 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 167 transitions, 352 flow [2023-08-30 14:11:32,528 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:11:32,529 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 167 transitions, 352 flow [2023-08-30 14:11:32,529 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 167 transitions, 352 flow [2023-08-30 14:11:32,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 167 transitions, 352 flow [2023-08-30 14:11:32,552 INFO L130 PetriNetUnfolder]: 32/267 cut-off events. [2023-08-30 14:11:32,552 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:11:32,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 267 events. 32/267 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 731 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2023-08-30 14:11:32,560 INFO L119 LiptonReduction]: Number of co-enabled transitions 10008 [2023-08-30 14:11:36,194 INFO L134 LiptonReduction]: Checked pairs total: 26056 [2023-08-30 14:11:36,195 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-30 14:11:36,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:11:36,197 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;@2122e100, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:11:36,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 14:11:36,200 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2023-08-30 14:11:36,200 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:11:36,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:36,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:11:36,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:11:36,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:36,201 INFO L85 PathProgramCache]: Analyzing trace with hash 797538958, now seen corresponding path program 1 times [2023-08-30 14:11:36,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:36,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506374406] [2023-08-30 14:11:36,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:36,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:36,261 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 14:11:36,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:36,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506374406] [2023-08-30 14:11:36,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506374406] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:36,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:36,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:11:36,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109592085] [2023-08-30 14:11:36,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:36,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:36,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:36,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:36,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:36,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 302 [2023-08-30 14:11:36,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:36,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:36,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 302 [2023-08-30 14:11:36,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:36,842 INFO L130 PetriNetUnfolder]: 4435/7401 cut-off events. [2023-08-30 14:11:36,842 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-30 14:11:36,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14568 conditions, 7401 events. 4435/7401 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 49336 event pairs, 2080 based on Foata normal form. 710/5791 useless extension candidates. Maximal degree in co-relation 1679. Up to 7046 conditions per place. [2023-08-30 14:11:36,889 INFO L137 encePairwiseOnDemand]: 283/302 looper letters, 58 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-30 14:11:36,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 272 flow [2023-08-30 14:11:36,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:11:36,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:11:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-30 14:11:36,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5584988962472406 [2023-08-30 14:11:36,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-30 14:11:36,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-30 14:11:36,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:36,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-30 14:11:36,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:36,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:36,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:36,896 INFO L175 Difference]: Start difference. First operand has 55 places, 66 transitions, 150 flow. Second operand 3 states and 506 transitions. [2023-08-30 14:11:36,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 272 flow [2023-08-30 14:11:36,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:11:36,901 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 138 flow [2023-08-30 14:11:36,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-08-30 14:11:36,903 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-08-30 14:11:36,904 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 138 flow [2023-08-30 14:11:36,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:36,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:36,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:11:36,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:11:36,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:11:36,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:36,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1938322309, now seen corresponding path program 1 times [2023-08-30 14:11:36,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:36,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79954717] [2023-08-30 14:11:36,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:36,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:36,990 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 14:11:36,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:36,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79954717] [2023-08-30 14:11:36,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79954717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:36,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:36,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:11:36,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123124896] [2023-08-30 14:11:36,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:36,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:36,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:36,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:36,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:37,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 302 [2023-08-30 14:11:37,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:37,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:37,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 302 [2023-08-30 14:11:37,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:37,552 INFO L130 PetriNetUnfolder]: 4011/6623 cut-off events. [2023-08-30 14:11:37,552 INFO L131 PetriNetUnfolder]: For 463/463 co-relation queries the response was YES. [2023-08-30 14:11:37,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13868 conditions, 6623 events. 4011/6623 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 41878 event pairs, 1437 based on Foata normal form. 0/4851 useless extension candidates. Maximal degree in co-relation 13780. Up to 6028 conditions per place. [2023-08-30 14:11:37,590 INFO L137 encePairwiseOnDemand]: 295/302 looper letters, 63 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2023-08-30 14:11:37,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 326 flow [2023-08-30 14:11:37,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:11:37,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:11:37,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-08-30 14:11:37,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5386313465783664 [2023-08-30 14:11:37,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-08-30 14:11:37,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-08-30 14:11:37,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:37,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-08-30 14:11:37,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:37,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:37,597 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:37,597 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 138 flow. Second operand 3 states and 488 transitions. [2023-08-30 14:11:37,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 326 flow [2023-08-30 14:11:37,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:11:37,599 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 161 flow [2023-08-30 14:11:37,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-30 14:11:37,600 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2023-08-30 14:11:37,601 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 161 flow [2023-08-30 14:11:37,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:37,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:37,601 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:11:37,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:11:37,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:11:37,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:37,602 INFO L85 PathProgramCache]: Analyzing trace with hash 72845733, now seen corresponding path program 1 times [2023-08-30 14:11:37,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:37,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924303336] [2023-08-30 14:11:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:37,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:11:37,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:37,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924303336] [2023-08-30 14:11:37,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924303336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:37,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:37,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:11:37,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714636675] [2023-08-30 14:11:37,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:37,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:37,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:37,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:37,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:37,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 302 [2023-08-30 14:11:37,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:37,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:37,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 302 [2023-08-30 14:11:37,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:38,084 INFO L130 PetriNetUnfolder]: 3683/5998 cut-off events. [2023-08-30 14:11:38,085 INFO L131 PetriNetUnfolder]: For 700/700 co-relation queries the response was YES. [2023-08-30 14:11:38,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13320 conditions, 5998 events. 3683/5998 cut-off events. For 700/700 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38912 event pairs, 931 based on Foata normal form. 0/4694 useless extension candidates. Maximal degree in co-relation 8343. Up to 4522 conditions per place. [2023-08-30 14:11:38,139 INFO L137 encePairwiseOnDemand]: 298/302 looper letters, 72 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-30 14:11:38,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 385 flow [2023-08-30 14:11:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:11:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:11:38,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2023-08-30 14:11:38,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543046357615894 [2023-08-30 14:11:38,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2023-08-30 14:11:38,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2023-08-30 14:11:38,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:38,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2023-08-30 14:11:38,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:38,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:38,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:38,147 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 161 flow. Second operand 3 states and 492 transitions. [2023-08-30 14:11:38,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 385 flow [2023-08-30 14:11:38,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 83 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:11:38,149 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 170 flow [2023-08-30 14:11:38,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-08-30 14:11:38,150 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2023-08-30 14:11:38,151 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 170 flow [2023-08-30 14:11:38,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:38,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:38,151 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:11:38,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:11:38,152 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:11:38,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:38,152 INFO L85 PathProgramCache]: Analyzing trace with hash 72845735, now seen corresponding path program 1 times [2023-08-30 14:11:38,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:38,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539083829] [2023-08-30 14:11:38,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:38,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:11:38,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:38,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539083829] [2023-08-30 14:11:38,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539083829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:38,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:38,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:11:38,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643685424] [2023-08-30 14:11:38,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:38,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:38,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:38,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:38,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:38,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 302 [2023-08-30 14:11:38,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:38,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:38,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 302 [2023-08-30 14:11:38,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:38,680 INFO L130 PetriNetUnfolder]: 3355/5588 cut-off events. [2023-08-30 14:11:38,681 INFO L131 PetriNetUnfolder]: For 2099/2099 co-relation queries the response was YES. [2023-08-30 14:11:38,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12654 conditions, 5588 events. 3355/5588 cut-off events. For 2099/2099 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 33508 event pairs, 3259 based on Foata normal form. 178/4705 useless extension candidates. Maximal degree in co-relation 9097. Up to 5404 conditions per place. [2023-08-30 14:11:38,708 INFO L137 encePairwiseOnDemand]: 300/302 looper letters, 46 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-08-30 14:11:38,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 260 flow [2023-08-30 14:11:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:11:38,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:11:38,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-08-30 14:11:38,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154525386313465 [2023-08-30 14:11:38,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-08-30 14:11:38,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-08-30 14:11:38,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:38,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-08-30 14:11:38,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:38,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:38,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:38,714 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 170 flow. Second operand 3 states and 467 transitions. [2023-08-30 14:11:38,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 260 flow [2023-08-30 14:11:38,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 54 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:11:38,718 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 164 flow [2023-08-30 14:11:38,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-08-30 14:11:38,719 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2023-08-30 14:11:38,719 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 164 flow [2023-08-30 14:11:38,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:38,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:38,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:11:38,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:11:38,720 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:11:38,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:38,721 INFO L85 PathProgramCache]: Analyzing trace with hash -925470198, now seen corresponding path program 1 times [2023-08-30 14:11:38,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:38,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587488563] [2023-08-30 14:11:38,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:38,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:38,791 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 14:11:38,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:38,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587488563] [2023-08-30 14:11:38,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587488563] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:38,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:38,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:11:38,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86017098] [2023-08-30 14:11:38,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:38,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:11:38,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:38,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:11:38,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:11:38,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 302 [2023-08-30 14:11:38,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:38,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:38,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 302 [2023-08-30 14:11:38,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:39,483 INFO L130 PetriNetUnfolder]: 4155/6959 cut-off events. [2023-08-30 14:11:39,483 INFO L131 PetriNetUnfolder]: For 1674/1674 co-relation queries the response was YES. [2023-08-30 14:11:39,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15442 conditions, 6959 events. 4155/6959 cut-off events. For 1674/1674 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 44526 event pairs, 635 based on Foata normal form. 0/5803 useless extension candidates. Maximal degree in co-relation 15428. Up to 3675 conditions per place. [2023-08-30 14:11:39,525 INFO L137 encePairwiseOnDemand]: 287/302 looper letters, 147 selfloop transitions, 19 changer transitions 0/173 dead transitions. [2023-08-30 14:11:39,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 173 transitions, 840 flow [2023-08-30 14:11:39,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:11:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:11:39,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1118 transitions. [2023-08-30 14:11:39,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288552507095553 [2023-08-30 14:11:39,528 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1118 transitions. [2023-08-30 14:11:39,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1118 transitions. [2023-08-30 14:11:39,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:39,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1118 transitions. [2023-08-30 14:11:39,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.71428571428572) internal successors, (1118), 7 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:39,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:39,535 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:39,535 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 164 flow. Second operand 7 states and 1118 transitions. [2023-08-30 14:11:39,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 173 transitions, 840 flow [2023-08-30 14:11:39,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 173 transitions, 839 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:11:39,540 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 322 flow [2023-08-30 14:11:39,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=322, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2023-08-30 14:11:39,542 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2023-08-30 14:11:39,542 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 322 flow [2023-08-30 14:11:39,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:39,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:39,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:11:39,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:11:39,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:11:39,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:39,544 INFO L85 PathProgramCache]: Analyzing trace with hash -925470108, now seen corresponding path program 1 times [2023-08-30 14:11:39,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:39,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79372185] [2023-08-30 14:11:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:39,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:39,607 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 14:11:39,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:39,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79372185] [2023-08-30 14:11:39,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79372185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:39,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:39,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:11:39,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457499919] [2023-08-30 14:11:39,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:39,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:11:39,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:39,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:11:39,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:11:39,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 302 [2023-08-30 14:11:39,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 322 flow. Second operand has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:39,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:39,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 302 [2023-08-30 14:11:39,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:40,335 INFO L130 PetriNetUnfolder]: 3903/6684 cut-off events. [2023-08-30 14:11:40,336 INFO L131 PetriNetUnfolder]: For 5369/5369 co-relation queries the response was YES. [2023-08-30 14:11:40,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18237 conditions, 6684 events. 3903/6684 cut-off events. For 5369/5369 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 43400 event pairs, 575 based on Foata normal form. 253/6576 useless extension candidates. Maximal degree in co-relation 18217. Up to 3781 conditions per place. [2023-08-30 14:11:40,384 INFO L137 encePairwiseOnDemand]: 287/302 looper letters, 150 selfloop transitions, 24 changer transitions 0/181 dead transitions. [2023-08-30 14:11:40,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 181 transitions, 1040 flow [2023-08-30 14:11:40,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:11:40,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:11:40,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1115 transitions. [2023-08-30 14:11:40,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5274361400189215 [2023-08-30 14:11:40,389 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1115 transitions. [2023-08-30 14:11:40,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1115 transitions. [2023-08-30 14:11:40,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:40,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1115 transitions. [2023-08-30 14:11:40,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.28571428571428) internal successors, (1115), 7 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:40,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:40,398 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:40,399 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 322 flow. Second operand 7 states and 1115 transitions. [2023-08-30 14:11:40,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 181 transitions, 1040 flow [2023-08-30 14:11:40,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 181 transitions, 1032 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 14:11:40,426 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 508 flow [2023-08-30 14:11:40,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=508, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2023-08-30 14:11:40,428 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2023-08-30 14:11:40,428 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 508 flow [2023-08-30 14:11:40,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:40,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:40,429 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:11:40,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:11:40,429 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:11:40,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:40,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1285314544, now seen corresponding path program 1 times [2023-08-30 14:11:40,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:40,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091411035] [2023-08-30 14:11:40,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:40,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:11:40,446 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:11:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:11:40,465 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:11:40,465 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:11:40,466 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-30 14:11:40,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 14:11:40,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 14:11:40,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 14:11:40,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 14:11:40,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 14:11:40,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 14:11:40,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 14:11:40,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-30 14:11:40,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-30 14:11:40,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-30 14:11:40,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 14:11:40,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 14:11:40,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 14:11:40,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 14:11:40,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 14:11:40,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 14:11:40,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:11:40,471 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:11:40,472 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:11:40,472 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:11:40,506 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:11:40,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 205 transitions, 440 flow [2023-08-30 14:11:40,570 INFO L130 PetriNetUnfolder]: 51/412 cut-off events. [2023-08-30 14:11:40,570 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:11:40,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 412 events. 51/412 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1313 event pairs, 1 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 275. Up to 16 conditions per place. [2023-08-30 14:11:40,574 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 205 transitions, 440 flow [2023-08-30 14:11:40,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 205 transitions, 440 flow [2023-08-30 14:11:40,577 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:11:40,577 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 205 transitions, 440 flow [2023-08-30 14:11:40,578 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 205 transitions, 440 flow [2023-08-30 14:11:40,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 205 transitions, 440 flow [2023-08-30 14:11:40,624 INFO L130 PetriNetUnfolder]: 51/412 cut-off events. [2023-08-30 14:11:40,624 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:11:40,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 412 events. 51/412 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1313 event pairs, 1 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 275. Up to 16 conditions per place. [2023-08-30 14:11:40,643 INFO L119 LiptonReduction]: Number of co-enabled transitions 19224 [2023-08-30 14:11:44,659 INFO L134 LiptonReduction]: Checked pairs total: 55619 [2023-08-30 14:11:44,659 INFO L136 LiptonReduction]: Total number of compositions: 161 [2023-08-30 14:11:44,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:11:44,661 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;@2122e100, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:11:44,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:11:44,663 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-08-30 14:11:44,664 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:11:44,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:44,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:11:44,664 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:11:44,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:44,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1183466356, now seen corresponding path program 1 times [2023-08-30 14:11:44,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:44,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195989866] [2023-08-30 14:11:44,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:44,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:44,713 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 14:11:44,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:44,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195989866] [2023-08-30 14:11:44,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195989866] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:44,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:44,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:11:44,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260451895] [2023-08-30 14:11:44,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:44,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:44,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:44,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:44,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:44,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 366 [2023-08-30 14:11:44,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 91 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:44,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:44,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 366 [2023-08-30 14:11:44,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:51,214 INFO L130 PetriNetUnfolder]: 91397/128608 cut-off events. [2023-08-30 14:11:51,214 INFO L131 PetriNetUnfolder]: For 1954/1954 co-relation queries the response was YES. [2023-08-30 14:11:51,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257237 conditions, 128608 events. 91397/128608 cut-off events. For 1954/1954 co-relation queries the response was YES. Maximal size of possible extension queue 3414. Compared 952875 event pairs, 21334 based on Foata normal form. 11994/101061 useless extension candidates. Maximal degree in co-relation 103678. Up to 96866 conditions per place. [2023-08-30 14:11:51,955 INFO L137 encePairwiseOnDemand]: 340/366 looper letters, 96 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2023-08-30 14:11:51,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 108 transitions, 444 flow [2023-08-30 14:11:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:11:51,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:11:51,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-08-30 14:11:51,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5919854280510018 [2023-08-30 14:11:51,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-08-30 14:11:51,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-08-30 14:11:51,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:51,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-08-30 14:11:51,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:51,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:51,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:51,963 INFO L175 Difference]: Start difference. First operand has 74 places, 91 transitions, 212 flow. Second operand 3 states and 650 transitions. [2023-08-30 14:11:51,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 108 transitions, 444 flow [2023-08-30 14:11:51,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 108 transitions, 444 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:11:51,970 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 184 flow [2023-08-30 14:11:51,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2023-08-30 14:11:51,972 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 2 predicate places. [2023-08-30 14:11:51,972 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 184 flow [2023-08-30 14:11:51,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:51,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:51,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:11:51,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:11:51,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:11:51,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:51,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1183466355, now seen corresponding path program 1 times [2023-08-30 14:11:51,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:51,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077223516] [2023-08-30 14:11:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:51,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:52,012 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 14:11:52,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:52,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077223516] [2023-08-30 14:11:52,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077223516] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:52,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:52,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:11:52,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082041928] [2023-08-30 14:11:52,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:52,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:52,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:52,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:52,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:52,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 366 [2023-08-30 14:11:52,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:52,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:52,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 366 [2023-08-30 14:11:52,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:58,895 INFO L130 PetriNetUnfolder]: 91384/131240 cut-off events. [2023-08-30 14:11:58,895 INFO L131 PetriNetUnfolder]: For 22839/22839 co-relation queries the response was YES. [2023-08-30 14:11:59,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274671 conditions, 131240 events. 91384/131240 cut-off events. For 22839/22839 co-relation queries the response was YES. Maximal size of possible extension queue 3327. Compared 968734 event pairs, 59320 based on Foata normal form. 14/97411 useless extension candidates. Maximal degree in co-relation 23557. Up to 127007 conditions per place. [2023-08-30 14:11:59,887 INFO L137 encePairwiseOnDemand]: 363/366 looper letters, 72 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-30 14:11:59,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 83 transitions, 364 flow [2023-08-30 14:11:59,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:11:59,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:11:59,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 588 transitions. [2023-08-30 14:11:59,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355191256830601 [2023-08-30 14:11:59,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 588 transitions. [2023-08-30 14:11:59,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 588 transitions. [2023-08-30 14:11:59,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:59,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 588 transitions. [2023-08-30 14:11:59,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:59,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:59,905 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:59,905 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 184 flow. Second operand 3 states and 588 transitions. [2023-08-30 14:11:59,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 83 transitions, 364 flow [2023-08-30 14:11:59,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 83 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:11:59,921 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 192 flow [2023-08-30 14:11:59,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2023-08-30 14:11:59,922 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-08-30 14:11:59,922 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 192 flow [2023-08-30 14:11:59,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:59,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:59,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:11:59,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:11:59,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:11:59,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:59,923 INFO L85 PathProgramCache]: Analyzing trace with hash -845787149, now seen corresponding path program 1 times [2023-08-30 14:11:59,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:59,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910663050] [2023-08-30 14:11:59,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:59,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:59,953 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 14:11:59,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:59,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910663050] [2023-08-30 14:11:59,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910663050] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:59,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:59,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:11:59,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719011120] [2023-08-30 14:11:59,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:59,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:59,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:59,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:59,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:59,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 366 [2023-08-30 14:11:59,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:59,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:59,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 366 [2023-08-30 14:11:59,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:06,755 INFO L130 PetriNetUnfolder]: 92785/133005 cut-off events. [2023-08-30 14:12:06,755 INFO L131 PetriNetUnfolder]: For 17511/17511 co-relation queries the response was YES. [2023-08-30 14:12:07,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278599 conditions, 133005 events. 92785/133005 cut-off events. For 17511/17511 co-relation queries the response was YES. Maximal size of possible extension queue 3416. Compared 975071 event pairs, 41991 based on Foata normal form. 0/97597 useless extension candidates. Maximal degree in co-relation 278489. Up to 126350 conditions per place. [2023-08-30 14:12:07,571 INFO L137 encePairwiseOnDemand]: 356/366 looper letters, 83 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2023-08-30 14:12:07,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 95 transitions, 443 flow [2023-08-30 14:12:07,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:12:07,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:12:07,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2023-08-30 14:12:07,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5409836065573771 [2023-08-30 14:12:07,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2023-08-30 14:12:07,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2023-08-30 14:12:07,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:07,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2023-08-30 14:12:07,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:07,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:07,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:07,581 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 192 flow. Second operand 3 states and 594 transitions. [2023-08-30 14:12:07,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 95 transitions, 443 flow [2023-08-30 14:12:07,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 95 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:12:07,599 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 226 flow [2023-08-30 14:12:07,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2023-08-30 14:12:07,600 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2023-08-30 14:12:07,600 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 226 flow [2023-08-30 14:12:07,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:07,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:07,601 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:12:07,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:12:07,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:12:07,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:07,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1426662821, now seen corresponding path program 1 times [2023-08-30 14:12:07,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:07,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396711738] [2023-08-30 14:12:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:07,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:12:07,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:07,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396711738] [2023-08-30 14:12:07,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396711738] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:07,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:12:07,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:12:07,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843469587] [2023-08-30 14:12:07,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:07,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:12:07,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:07,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:12:07,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:12:07,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 366 [2023-08-30 14:12:07,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:07,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:07,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 366 [2023-08-30 14:12:07,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:14,411 INFO L130 PetriNetUnfolder]: 82760/119700 cut-off events. [2023-08-30 14:12:14,411 INFO L131 PetriNetUnfolder]: For 24510/24510 co-relation queries the response was YES. [2023-08-30 14:12:14,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265140 conditions, 119700 events. 82760/119700 cut-off events. For 24510/24510 co-relation queries the response was YES. Maximal size of possible extension queue 3045. Compared 876471 event pairs, 81671 based on Foata normal form. 2958/95280 useless extension candidates. Maximal degree in co-relation 161979. Up to 115548 conditions per place. [2023-08-30 14:12:15,005 INFO L137 encePairwiseOnDemand]: 364/366 looper letters, 61 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-08-30 14:12:15,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 72 transitions, 346 flow [2023-08-30 14:12:15,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:12:15,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:12:15,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2023-08-30 14:12:15,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209471766848816 [2023-08-30 14:12:15,008 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 572 transitions. [2023-08-30 14:12:15,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 572 transitions. [2023-08-30 14:12:15,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:15,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 572 transitions. [2023-08-30 14:12:15,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:15,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:15,012 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:15,012 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 226 flow. Second operand 3 states and 572 transitions. [2023-08-30 14:12:15,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 72 transitions, 346 flow [2023-08-30 14:12:15,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 72 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:12:15,030 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 220 flow [2023-08-30 14:12:15,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2023-08-30 14:12:15,031 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2023-08-30 14:12:15,031 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 220 flow [2023-08-30 14:12:15,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:15,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:15,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:12:15,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:12:15,032 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:12:15,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:15,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2064692589, now seen corresponding path program 1 times [2023-08-30 14:12:15,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:15,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053825618] [2023-08-30 14:12:15,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:15,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:15,075 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 14:12:15,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:15,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053825618] [2023-08-30 14:12:15,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053825618] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:15,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:12:15,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:12:15,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208412315] [2023-08-30 14:12:15,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:15,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:12:15,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:15,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:12:15,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:12:15,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 366 [2023-08-30 14:12:15,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:15,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:15,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 366 [2023-08-30 14:12:15,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:24,354 INFO L130 PetriNetUnfolder]: 119440/173386 cut-off events. [2023-08-30 14:12:24,355 INFO L131 PetriNetUnfolder]: For 34812/34812 co-relation queries the response was YES. [2023-08-30 14:12:24,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384994 conditions, 173386 events. 119440/173386 cut-off events. For 34812/34812 co-relation queries the response was YES. Maximal size of possible extension queue 4935. Compared 1358231 event pairs, 25445 based on Foata normal form. 0/138648 useless extension candidates. Maximal degree in co-relation 384979. Up to 97404 conditions per place. [2023-08-30 14:12:25,262 INFO L137 encePairwiseOnDemand]: 345/366 looper letters, 211 selfloop transitions, 30 changer transitions 0/249 dead transitions. [2023-08-30 14:12:25,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 249 transitions, 1228 flow [2023-08-30 14:12:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:12:25,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:12:25,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1393 transitions. [2023-08-30 14:12:25,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437158469945356 [2023-08-30 14:12:25,265 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1393 transitions. [2023-08-30 14:12:25,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1393 transitions. [2023-08-30 14:12:25,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:25,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1393 transitions. [2023-08-30 14:12:25,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:25,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:25,274 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:25,274 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 220 flow. Second operand 7 states and 1393 transitions. [2023-08-30 14:12:25,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 249 transitions, 1228 flow [2023-08-30 14:12:25,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 249 transitions, 1227 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:12:25,291 INFO L231 Difference]: Finished difference. Result has 89 places, 98 transitions, 481 flow [2023-08-30 14:12:25,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=481, PETRI_PLACES=89, PETRI_TRANSITIONS=98} [2023-08-30 14:12:25,291 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 15 predicate places. [2023-08-30 14:12:25,292 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 98 transitions, 481 flow [2023-08-30 14:12:25,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:25,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:25,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:12:25,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:12:25,293 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:12:25,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:25,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2064692565, now seen corresponding path program 1 times [2023-08-30 14:12:25,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:25,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480980368] [2023-08-30 14:12:25,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:25,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:25,338 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 14:12:25,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:25,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480980368] [2023-08-30 14:12:25,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480980368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:25,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:12:25,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:12:25,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250875722] [2023-08-30 14:12:25,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:25,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:12:25,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:25,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:12:25,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:12:25,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 366 [2023-08-30 14:12:25,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 98 transitions, 481 flow. Second operand has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:25,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:25,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 366 [2023-08-30 14:12:25,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:37,042 INFO L130 PetriNetUnfolder]: 124088/184176 cut-off events. [2023-08-30 14:12:37,042 INFO L131 PetriNetUnfolder]: For 172790/173870 co-relation queries the response was YES. [2023-08-30 14:12:37,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513728 conditions, 184176 events. 124088/184176 cut-off events. For 172790/173870 co-relation queries the response was YES. Maximal size of possible extension queue 5431. Compared 1516725 event pairs, 23660 based on Foata normal form. 7249/177960 useless extension candidates. Maximal degree in co-relation 513707. Up to 111774 conditions per place. [2023-08-30 14:12:38,477 INFO L137 encePairwiseOnDemand]: 345/366 looper letters, 231 selfloop transitions, 42 changer transitions 0/281 dead transitions. [2023-08-30 14:12:38,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 281 transitions, 1749 flow [2023-08-30 14:12:38,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:12:38,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:12:38,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1393 transitions. [2023-08-30 14:12:38,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437158469945356 [2023-08-30 14:12:38,480 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1393 transitions. [2023-08-30 14:12:38,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1393 transitions. [2023-08-30 14:12:38,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:38,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1393 transitions. [2023-08-30 14:12:38,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:38,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:38,489 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:38,489 INFO L175 Difference]: Start difference. First operand has 89 places, 98 transitions, 481 flow. Second operand 7 states and 1393 transitions. [2023-08-30 14:12:38,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 281 transitions, 1749 flow [2023-08-30 14:12:39,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 281 transitions, 1743 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:12:39,174 INFO L231 Difference]: Finished difference. Result has 98 places, 131 transitions, 957 flow [2023-08-30 14:12:39,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=957, PETRI_PLACES=98, PETRI_TRANSITIONS=131} [2023-08-30 14:12:39,175 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 24 predicate places. [2023-08-30 14:12:39,175 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 131 transitions, 957 flow [2023-08-30 14:12:39,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:39,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:39,176 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 14:12:39,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 14:12:39,176 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:12:39,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:39,176 INFO L85 PathProgramCache]: Analyzing trace with hash 58874017, now seen corresponding path program 1 times [2023-08-30 14:12:39,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:39,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988643506] [2023-08-30 14:12:39,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:39,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:12:39,188 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:12:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:12:39,201 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:12:39,201 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:12:39,201 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 14:12:39,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 14:12:39,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 14:12:39,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 14:12:39,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 14:12:39,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 14:12:39,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 14:12:39,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 14:12:39,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 14:12:39,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 14:12:39,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 14:12:39,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 14:12:39,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 14:12:39,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 14:12:39,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 14:12:39,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 14:12:39,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 14:12:39,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 14:12:39,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 14:12:39,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 14:12:39,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 14:12:39,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 14:12:39,205 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:12:39,206 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:12:39,206 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 14:12:39,223 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 14:12:39,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 243 transitions, 530 flow [2023-08-30 14:12:39,282 INFO L130 PetriNetUnfolder]: 82/637 cut-off events. [2023-08-30 14:12:39,282 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:12:39,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 637 events. 82/637 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2413 event pairs, 6 based on Foata normal form. 0/501 useless extension candidates. Maximal degree in co-relation 432. Up to 32 conditions per place. [2023-08-30 14:12:39,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 243 transitions, 530 flow [2023-08-30 14:12:39,291 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 243 transitions, 530 flow [2023-08-30 14:12:39,292 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:12:39,292 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 243 transitions, 530 flow [2023-08-30 14:12:39,292 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 243 transitions, 530 flow [2023-08-30 14:12:39,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 243 transitions, 530 flow [2023-08-30 14:12:39,340 INFO L130 PetriNetUnfolder]: 82/637 cut-off events. [2023-08-30 14:12:39,340 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:12:39,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 637 events. 82/637 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2413 event pairs, 6 based on Foata normal form. 0/501 useless extension candidates. Maximal degree in co-relation 432. Up to 32 conditions per place. [2023-08-30 14:12:39,361 INFO L119 LiptonReduction]: Number of co-enabled transitions 31248 [2023-08-30 14:12:43,263 INFO L134 LiptonReduction]: Checked pairs total: 96254 [2023-08-30 14:12:43,263 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-08-30 14:12:43,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:12:43,265 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;@2122e100, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:12:43,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 14:12:43,267 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-08-30 14:12:43,267 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:12:43,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:43,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:12:43,267 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:12:43,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:43,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1631243805, now seen corresponding path program 1 times [2023-08-30 14:12:43,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:43,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858452682] [2023-08-30 14:12:43,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:43,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:43,302 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 14:12:43,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:43,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858452682] [2023-08-30 14:12:43,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858452682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:43,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:12:43,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:12:43,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144066565] [2023-08-30 14:12:43,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:43,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:12:43,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:43,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:12:43,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:12:43,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 431 [2023-08-30 14:12:43,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 112 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:43,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:43,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 431 [2023-08-30 14:12:43,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand