./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations 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_70-funloop_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:17:26,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:17:26,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:17:26,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:17:26,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:17:26,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:17:26,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:17:26,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:17:26,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:17:26,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:17:26,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:17:26,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:17:26,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:17:26,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:17:26,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:17:26,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:17:26,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:17:26,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:17:26,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:17:26,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:17:26,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:17:26,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:17:26,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:17:26,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:17:26,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:17:26,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:17:26,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:17:26,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:17:26,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:17:26,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:17:26,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:17:26,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:17:26,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:17:26,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:17:26,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:17:26,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:17:26,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:17:26,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:17:26,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:17:26,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:17:26,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:17:26,465 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:17:26,491 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:17:26,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:17:26,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:17:26,492 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:17:26,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:17:26,493 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:17:26,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:17:26,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:17:26,494 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:17:26,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:17:26,495 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:17:26,495 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:17:26,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:17:26,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:17:26,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:17:26,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:17:26,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:17:26,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:17:26,496 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:17:26,496 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:17:26,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:17:26,496 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:17:26,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:17:26,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:17:26,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:17:26,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:17:26,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:17:26,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:17:26,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:17:26,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:17:26,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:17:26,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:17:26,498 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:17:26,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:17:26,499 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:17:26,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:17:26,499 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:17:26,499 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:17:26,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:17:26,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:17:26,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:17:26,769 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:17:26,769 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:17:26,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-08-30 14:17:27,673 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:17:27,868 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:17:27,869 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-08-30 14:17:27,884 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66288d472/c3d9eda590ce497398964c30dc4f6c22/FLAG0716f1d5d [2023-08-30 14:17:27,894 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66288d472/c3d9eda590ce497398964c30dc4f6c22 [2023-08-30 14:17:27,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:17:27,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:17:27,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:17:27,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:17:27,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:17:27,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:17:27" (1/1) ... [2023-08-30 14:17:27,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539a8715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:27, skipping insertion in model container [2023-08-30 14:17:27,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:17:27" (1/1) ... [2023-08-30 14:17:27,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:17:27,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:17:28,201 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i[41323,41336] [2023-08-30 14:17:28,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:17:28,240 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:17:28,275 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i[41323,41336] [2023-08-30 14:17:28,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:17:28,335 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:17:28,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:28 WrapperNode [2023-08-30 14:17:28,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:17:28,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:17:28,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:17:28,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:17:28,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:28" (1/1) ... [2023-08-30 14:17:28,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:28" (1/1) ... [2023-08-30 14:17:28,384 INFO L138 Inliner]: procedures = 271, calls = 31, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 213 [2023-08-30 14:17:28,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:17:28,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:17:28,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:17:28,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:17:28,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:28" (1/1) ... [2023-08-30 14:17:28,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:28" (1/1) ... [2023-08-30 14:17:28,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:28" (1/1) ... [2023-08-30 14:17:28,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:28" (1/1) ... [2023-08-30 14:17:28,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:28" (1/1) ... [2023-08-30 14:17:28,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:28" (1/1) ... [2023-08-30 14:17:28,412 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:28" (1/1) ... [2023-08-30 14:17:28,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:28" (1/1) ... [2023-08-30 14:17:28,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:17:28,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:17:28,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:17:28,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:17:28,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:28" (1/1) ... [2023-08-30 14:17:28,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:17:28,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:17:28,446 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 14:17:28,462 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 14:17:28,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:17:28,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:17:28,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:17:28,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:17:28,473 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:17:28,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:17:28,474 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:17:28,474 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:17:28,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:17:28,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:17:28,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:17:28,475 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 14:17:28,630 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:17:28,632 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:17:28,900 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:17:28,905 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:17:28,905 INFO L302 CfgBuilder]: Removed 25 assume(true) statements. [2023-08-30 14:17:28,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:17:28 BoogieIcfgContainer [2023-08-30 14:17:28,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:17:28,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:17:28,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:17:28,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:17:28,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:17:27" (1/3) ... [2023-08-30 14:17:28,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f5531a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:17:28, skipping insertion in model container [2023-08-30 14:17:28,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:28" (2/3) ... [2023-08-30 14:17:28,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f5531a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:17:28, skipping insertion in model container [2023-08-30 14:17:28,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:17:28" (3/3) ... [2023-08-30 14:17:28,911 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2023-08-30 14:17:28,920 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:17:28,950 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:17:28,950 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-30 14:17:28,950 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:17:29,032 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:17:29,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 226 transitions, 460 flow [2023-08-30 14:17:29,154 INFO L130 PetriNetUnfolder]: 49/318 cut-off events. [2023-08-30 14:17:29,155 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:17:29,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 318 events. 49/318 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1228 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 181. Up to 8 conditions per place. [2023-08-30 14:17:29,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 226 transitions, 460 flow [2023-08-30 14:17:29,169 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 223 transitions, 454 flow [2023-08-30 14:17:29,171 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:17:29,177 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 223 transitions, 454 flow [2023-08-30 14:17:29,179 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 223 transitions, 454 flow [2023-08-30 14:17:29,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 223 transitions, 454 flow [2023-08-30 14:17:29,222 INFO L130 PetriNetUnfolder]: 48/315 cut-off events. [2023-08-30 14:17:29,223 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:17:29,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 315 events. 48/315 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1213 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 181. Up to 8 conditions per place. [2023-08-30 14:17:29,232 INFO L119 LiptonReduction]: Number of co-enabled transitions 16320 [2023-08-30 14:17:31,740 INFO L134 LiptonReduction]: Checked pairs total: 26760 [2023-08-30 14:17:31,740 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-08-30 14:17:31,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:17:31,753 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;@386312ac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:17:31,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 14:17:31,755 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:17:31,755 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:17:31,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:31,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:17:31,756 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 14:17:31,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:31,759 INFO L85 PathProgramCache]: Analyzing trace with hash 28676, now seen corresponding path program 1 times [2023-08-30 14:17:31,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:31,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968625458] [2023-08-30 14:17:31,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:31,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:31,924 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 14:17:31,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:31,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968625458] [2023-08-30 14:17:31,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968625458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:31,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:31,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:17:31,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655164148] [2023-08-30 14:17:31,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:31,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:17:31,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:31,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:17:31,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:17:31,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 425 [2023-08-30 14:17:31,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 88 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:31,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:31,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 425 [2023-08-30 14:17:31,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:32,158 INFO L130 PetriNetUnfolder]: 598/1258 cut-off events. [2023-08-30 14:17:32,159 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:17:32,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2396 conditions, 1258 events. 598/1258 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7375 event pairs, 504 based on Foata normal form. 165/1009 useless extension candidates. Maximal degree in co-relation 2321. Up to 1131 conditions per place. [2023-08-30 14:17:32,165 INFO L137 encePairwiseOnDemand]: 398/425 looper letters, 54 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-30 14:17:32,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 66 transitions, 252 flow [2023-08-30 14:17:32,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:17:32,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:17:32,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2023-08-30 14:17:32,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137254901960784 [2023-08-30 14:17:32,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 655 transitions. [2023-08-30 14:17:32,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 655 transitions. [2023-08-30 14:17:32,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:32,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 655 transitions. [2023-08-30 14:17:32,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:32,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:32,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:32,192 INFO L175 Difference]: Start difference. First operand has 65 places, 88 transitions, 184 flow. Second operand 3 states and 655 transitions. [2023-08-30 14:17:32,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 66 transitions, 252 flow [2023-08-30 14:17:32,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:17:32,196 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 152 flow [2023-08-30 14:17:32,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-08-30 14:17:32,199 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 1 predicate places. [2023-08-30 14:17:32,199 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 152 flow [2023-08-30 14:17:32,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:32,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:32,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:17:32,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:17:32,200 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:17:32,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:32,201 INFO L85 PathProgramCache]: Analyzing trace with hash 891375, now seen corresponding path program 1 times [2023-08-30 14:17:32,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:32,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768701044] [2023-08-30 14:17:32,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:32,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:17:32,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:32,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768701044] [2023-08-30 14:17:32,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768701044] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:17:32,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067503158] [2023-08-30 14:17:32,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:32,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:17:32,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:17:32,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:17:32,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 14:17:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:32,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:17:32,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:17:32,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:17:32,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:17:32,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067503158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:32,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:17:32,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:17:32,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45518930] [2023-08-30 14:17:32,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:32,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:17:32,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:32,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:17:32,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:17:32,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 425 [2023-08-30 14:17:32,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:32,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:32,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 425 [2023-08-30 14:17:32,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:32,534 INFO L130 PetriNetUnfolder]: 598/1257 cut-off events. [2023-08-30 14:17:32,534 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:17:32,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2401 conditions, 1257 events. 598/1257 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7356 event pairs, 504 based on Foata normal form. 0/844 useless extension candidates. Maximal degree in co-relation 2389. Up to 1129 conditions per place. [2023-08-30 14:17:32,539 INFO L137 encePairwiseOnDemand]: 422/425 looper letters, 53 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-30 14:17:32,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 65 transitions, 258 flow [2023-08-30 14:17:32,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:17:32,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:17:32,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 820 transitions. [2023-08-30 14:17:32,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2023-08-30 14:17:32,541 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 820 transitions. [2023-08-30 14:17:32,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 820 transitions. [2023-08-30 14:17:32,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:32,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 820 transitions. [2023-08-30 14:17:32,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:32,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:32,546 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:32,546 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 152 flow. Second operand 4 states and 820 transitions. [2023-08-30 14:17:32,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 65 transitions, 258 flow [2023-08-30 14:17:32,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 254 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:17:32,548 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 148 flow [2023-08-30 14:17:32,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-08-30 14:17:32,548 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2023-08-30 14:17:32,548 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 148 flow [2023-08-30 14:17:32,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:32,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:32,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:17:32,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:17:32,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:17:32,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:17:32,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:32,754 INFO L85 PathProgramCache]: Analyzing trace with hash 786466763, now seen corresponding path program 1 times [2023-08-30 14:17:32,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:32,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140651771] [2023-08-30 14:17:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:32,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:32,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:17:32,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:32,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140651771] [2023-08-30 14:17:32,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140651771] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:17:32,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759265913] [2023-08-30 14:17:32,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:32,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:17:32,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:17:32,843 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:17:32,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 14:17:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:32,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:17:32,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:17:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:17:32,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:17:32,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:17:32,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759265913] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:17:32,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:17:32,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:17:32,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565592169] [2023-08-30 14:17:32,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:17:32,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:17:32,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:32,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:17:32,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:17:32,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 425 [2023-08-30 14:17:32,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 191.57142857142858) internal successors, (1341), 7 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:32,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:32,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 425 [2023-08-30 14:17:32,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:33,095 INFO L130 PetriNetUnfolder]: 598/1260 cut-off events. [2023-08-30 14:17:33,095 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:17:33,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2410 conditions, 1260 events. 598/1260 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7391 event pairs, 504 based on Foata normal form. 0/847 useless extension candidates. Maximal degree in co-relation 2398. Up to 1130 conditions per place. [2023-08-30 14:17:33,100 INFO L137 encePairwiseOnDemand]: 422/425 looper letters, 53 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2023-08-30 14:17:33,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 276 flow [2023-08-30 14:17:33,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:17:33,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:17:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1201 transitions. [2023-08-30 14:17:33,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47098039215686277 [2023-08-30 14:17:33,103 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1201 transitions. [2023-08-30 14:17:33,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1201 transitions. [2023-08-30 14:17:33,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:33,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1201 transitions. [2023-08-30 14:17:33,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 200.16666666666666) internal successors, (1201), 6 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:33,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:33,109 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:33,110 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 148 flow. Second operand 6 states and 1201 transitions. [2023-08-30 14:17:33,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 276 flow [2023-08-30 14:17:33,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 273 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:17:33,112 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 181 flow [2023-08-30 14:17:33,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2023-08-30 14:17:33,112 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2023-08-30 14:17:33,112 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 181 flow [2023-08-30 14:17:33,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 191.57142857142858) internal successors, (1341), 7 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:33,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:33,114 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 14:17:33,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 14:17:33,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 14:17:33,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:17:33,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1475681578, now seen corresponding path program 2 times [2023-08-30 14:17:33,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:33,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281108639] [2023-08-30 14:17:33,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:33,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:17:33,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:33,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281108639] [2023-08-30 14:17:33,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281108639] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:33,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:33,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:17:33,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626069963] [2023-08-30 14:17:33,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:33,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:17:33,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:33,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:17:33,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:17:33,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 425 [2023-08-30 14:17:33,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:33,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:33,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 425 [2023-08-30 14:17:33,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:33,533 INFO L130 PetriNetUnfolder]: 552/1169 cut-off events. [2023-08-30 14:17:33,533 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:17:33,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2238 conditions, 1169 events. 552/1169 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6988 event pairs, 210 based on Foata normal form. 0/827 useless extension candidates. Maximal degree in co-relation 2222. Up to 1000 conditions per place. [2023-08-30 14:17:33,549 INFO L137 encePairwiseOnDemand]: 420/425 looper letters, 77 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2023-08-30 14:17:33,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 89 transitions, 381 flow [2023-08-30 14:17:33,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:17:33,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:17:33,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 651 transitions. [2023-08-30 14:17:33,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105882352941177 [2023-08-30 14:17:33,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 651 transitions. [2023-08-30 14:17:33,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 651 transitions. [2023-08-30 14:17:33,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:33,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 651 transitions. [2023-08-30 14:17:33,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:33,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:33,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:33,555 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 181 flow. Second operand 3 states and 651 transitions. [2023-08-30 14:17:33,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 89 transitions, 381 flow [2023-08-30 14:17:33,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 89 transitions, 367 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:17:33,557 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 171 flow [2023-08-30 14:17:33,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2023-08-30 14:17:33,558 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2023-08-30 14:17:33,558 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 171 flow [2023-08-30 14:17:33,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:33,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:33,558 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-30 14:17:33,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:17:33,559 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:17:33,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:33,559 INFO L85 PathProgramCache]: Analyzing trace with hash -790718423, now seen corresponding path program 1 times [2023-08-30 14:17:33,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:33,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407659317] [2023-08-30 14:17:33,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:33,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:17:33,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:33,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407659317] [2023-08-30 14:17:33,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407659317] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:17:33,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930075275] [2023-08-30 14:17:33,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:33,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:17:33,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:17:33,611 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:17:33,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 14:17:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:33,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:17:33,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:17:33,683 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:17:33,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:17:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:17:33,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930075275] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:17:33,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:17:33,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:17:33,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123885003] [2023-08-30 14:17:33,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:17:33,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:17:33,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:33,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:17:33,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:17:33,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 425 [2023-08-30 14:17:33,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 171 flow. Second operand has 13 states, 13 states have (on average 191.30769230769232) internal successors, (2487), 13 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:33,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:33,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 425 [2023-08-30 14:17:33,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:33,886 INFO L130 PetriNetUnfolder]: 552/1157 cut-off events. [2023-08-30 14:17:33,887 INFO L131 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2023-08-30 14:17:33,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2292 conditions, 1157 events. 552/1157 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6527 event pairs, 462 based on Foata normal form. 6/840 useless extension candidates. Maximal degree in co-relation 2275. Up to 1021 conditions per place. [2023-08-30 14:17:33,893 INFO L137 encePairwiseOnDemand]: 422/425 looper letters, 51 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2023-08-30 14:17:33,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 72 transitions, 331 flow [2023-08-30 14:17:33,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:17:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:17:33,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2348 transitions. [2023-08-30 14:17:33,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603921568627451 [2023-08-30 14:17:33,897 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2348 transitions. [2023-08-30 14:17:33,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2348 transitions. [2023-08-30 14:17:33,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:33,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2348 transitions. [2023-08-30 14:17:33,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 195.66666666666666) internal successors, (2348), 12 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:33,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 425.0) internal successors, (5525), 13 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:33,910 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 425.0) internal successors, (5525), 13 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:33,910 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 171 flow. Second operand 12 states and 2348 transitions. [2023-08-30 14:17:33,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 72 transitions, 331 flow [2023-08-30 14:17:33,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 72 transitions, 327 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:17:33,914 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 251 flow [2023-08-30 14:17:33,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=251, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2023-08-30 14:17:33,916 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 23 predicate places. [2023-08-30 14:17:33,916 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 251 flow [2023-08-30 14:17:33,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 191.30769230769232) internal successors, (2487), 13 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:33,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:33,917 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-30 14:17:33,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:17:34,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:17:34,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:17:34,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:34,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1061850121, now seen corresponding path program 2 times [2023-08-30 14:17:34,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:34,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795689407] [2023-08-30 14:17:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:34,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:17:34,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:17:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:17:34,160 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:17:34,161 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:17:34,161 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-08-30 14:17:34,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-08-30 14:17:34,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-08-30 14:17:34,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-08-30 14:17:34,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-08-30 14:17:34,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-08-30 14:17:34,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-08-30 14:17:34,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-08-30 14:17:34,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-08-30 14:17:34,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-08-30 14:17:34,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-08-30 14:17:34,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-08-30 14:17:34,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-08-30 14:17:34,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-08-30 14:17:34,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2023-08-30 14:17:34,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-08-30 14:17:34,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-08-30 14:17:34,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-08-30 14:17:34,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-08-30 14:17:34,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-08-30 14:17:34,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-08-30 14:17:34,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-08-30 14:17:34,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-08-30 14:17:34,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-08-30 14:17:34,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-08-30 14:17:34,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:17:34,166 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-08-30 14:17:34,168 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:17:34,168 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:17:34,186 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:17:34,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 308 transitions, 634 flow [2023-08-30 14:17:34,222 INFO L130 PetriNetUnfolder]: 82/528 cut-off events. [2023-08-30 14:17:34,222 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:17:34,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 528 events. 82/528 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2488 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 320. Up to 12 conditions per place. [2023-08-30 14:17:34,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 308 transitions, 634 flow [2023-08-30 14:17:34,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 308 transitions, 634 flow [2023-08-30 14:17:34,230 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:17:34,230 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 308 transitions, 634 flow [2023-08-30 14:17:34,230 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 308 transitions, 634 flow [2023-08-30 14:17:34,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 308 transitions, 634 flow [2023-08-30 14:17:34,281 INFO L130 PetriNetUnfolder]: 82/528 cut-off events. [2023-08-30 14:17:34,281 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:17:34,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 528 events. 82/528 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2488 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 320. Up to 12 conditions per place. [2023-08-30 14:17:34,301 INFO L119 LiptonReduction]: Number of co-enabled transitions 48480 [2023-08-30 14:17:36,963 INFO L134 LiptonReduction]: Checked pairs total: 82759 [2023-08-30 14:17:36,963 INFO L136 LiptonReduction]: Total number of compositions: 253 [2023-08-30 14:17:36,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:17:36,965 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;@386312ac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:17:36,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-08-30 14:17:36,966 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:17:36,966 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:17:36,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:36,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:17:36,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-08-30 14:17:36,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:36,967 INFO L85 PathProgramCache]: Analyzing trace with hash 49211, now seen corresponding path program 1 times [2023-08-30 14:17:36,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:36,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202493895] [2023-08-30 14:17:36,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:36,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:36,982 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 14:17:36,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:36,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202493895] [2023-08-30 14:17:36,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202493895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:36,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:36,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:17:36,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712815749] [2023-08-30 14:17:36,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:36,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:17:36,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:36,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:17:36,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:17:36,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 561 [2023-08-30 14:17:36,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 130 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:36,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:36,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 561 [2023-08-30 14:17:36,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:39,465 INFO L130 PetriNetUnfolder]: 32149/48768 cut-off events. [2023-08-30 14:17:39,465 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2023-08-30 14:17:39,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95420 conditions, 48768 events. 32149/48768 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1640. Compared 358889 event pairs, 28810 based on Foata normal form. 5570/37278 useless extension candidates. Maximal degree in co-relation 44782. Up to 46511 conditions per place. [2023-08-30 14:17:39,695 INFO L137 encePairwiseOnDemand]: 525/561 looper letters, 84 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-30 14:17:39,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 99 transitions, 388 flow [2023-08-30 14:17:39,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:17:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:17:39,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 895 transitions. [2023-08-30 14:17:39,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5317884729649436 [2023-08-30 14:17:39,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 895 transitions. [2023-08-30 14:17:39,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 895 transitions. [2023-08-30 14:17:39,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:39,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 895 transitions. [2023-08-30 14:17:39,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:39,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:39,703 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:39,703 INFO L175 Difference]: Start difference. First operand has 95 places, 130 transitions, 278 flow. Second operand 3 states and 895 transitions. [2023-08-30 14:17:39,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 99 transitions, 388 flow [2023-08-30 14:17:39,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 99 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:17:39,707 INFO L231 Difference]: Finished difference. Result has 97 places, 99 transitions, 228 flow [2023-08-30 14:17:39,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=97, PETRI_TRANSITIONS=99} [2023-08-30 14:17:39,708 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 2 predicate places. [2023-08-30 14:17:39,708 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 99 transitions, 228 flow [2023-08-30 14:17:39,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:39,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:39,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:17:39,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:17:39,709 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-08-30 14:17:39,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:39,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1529027, now seen corresponding path program 1 times [2023-08-30 14:17:39,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:39,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537930625] [2023-08-30 14:17:39,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:39,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:39,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:17:39,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:39,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537930625] [2023-08-30 14:17:39,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537930625] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:39,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:39,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:17:39,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267682715] [2023-08-30 14:17:39,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:39,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:17:39,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:39,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:17:39,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:17:39,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 561 [2023-08-30 14:17:39,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 99 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:39,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:39,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 561 [2023-08-30 14:17:39,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:41,918 INFO L130 PetriNetUnfolder]: 32149/48767 cut-off events. [2023-08-30 14:17:41,919 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2023-08-30 14:17:41,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95425 conditions, 48767 events. 32149/48767 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1640. Compared 359229 event pairs, 28810 based on Foata normal form. 0/31708 useless extension candidates. Maximal degree in co-relation 95412. Up to 46510 conditions per place. [2023-08-30 14:17:42,134 INFO L137 encePairwiseOnDemand]: 559/561 looper letters, 84 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2023-08-30 14:17:42,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 98 transitions, 394 flow [2023-08-30 14:17:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:17:42,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:17:42,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 859 transitions. [2023-08-30 14:17:42,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5103980986333928 [2023-08-30 14:17:42,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 859 transitions. [2023-08-30 14:17:42,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 859 transitions. [2023-08-30 14:17:42,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:42,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 859 transitions. [2023-08-30 14:17:42,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:42,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:42,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:42,142 INFO L175 Difference]: Start difference. First operand has 97 places, 99 transitions, 228 flow. Second operand 3 states and 859 transitions. [2023-08-30 14:17:42,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 98 transitions, 394 flow [2023-08-30 14:17:42,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 98 transitions, 390 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:17:42,145 INFO L231 Difference]: Finished difference. Result has 97 places, 98 transitions, 222 flow [2023-08-30 14:17:42,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=97, PETRI_TRANSITIONS=98} [2023-08-30 14:17:42,146 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 2 predicate places. [2023-08-30 14:17:42,146 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 98 transitions, 222 flow [2023-08-30 14:17:42,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:42,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:42,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:17:42,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:17:42,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-08-30 14:17:42,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:42,147 INFO L85 PathProgramCache]: Analyzing trace with hash -890468408, now seen corresponding path program 1 times [2023-08-30 14:17:42,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:42,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368718029] [2023-08-30 14:17:42,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:42,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:17:42,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:42,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368718029] [2023-08-30 14:17:42,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368718029] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:17:42,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261327882] [2023-08-30 14:17:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:42,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:17:42,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:17:42,190 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:17:42,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 14:17:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:42,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:17:42,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:17:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:17:42,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:17:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:17:42,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261327882] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:17:42,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:17:42,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:17:42,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641951043] [2023-08-30 14:17:42,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:17:42,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:17:42,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:42,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:17:42,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:17:42,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 561 [2023-08-30 14:17:42,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 98 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 258.57142857142856) internal successors, (1810), 7 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:42,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:42,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 561 [2023-08-30 14:17:42,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:44,351 INFO L130 PetriNetUnfolder]: 32149/48770 cut-off events. [2023-08-30 14:17:44,352 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2023-08-30 14:17:44,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95433 conditions, 48770 events. 32149/48770 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1643. Compared 359422 event pairs, 28810 based on Foata normal form. 0/31711 useless extension candidates. Maximal degree in co-relation 95423. Up to 46510 conditions per place. [2023-08-30 14:17:44,545 INFO L137 encePairwiseOnDemand]: 558/561 looper letters, 83 selfloop transitions, 5 changer transitions 0/101 dead transitions. [2023-08-30 14:17:44,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 101 transitions, 410 flow [2023-08-30 14:17:44,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:17:44,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:17:44,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1633 transitions. [2023-08-30 14:17:44,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851455733808675 [2023-08-30 14:17:44,548 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1633 transitions. [2023-08-30 14:17:44,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1633 transitions. [2023-08-30 14:17:44,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:44,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1633 transitions. [2023-08-30 14:17:44,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:44,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 561.0) internal successors, (3927), 7 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:44,555 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 561.0) internal successors, (3927), 7 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:44,555 INFO L175 Difference]: Start difference. First operand has 97 places, 98 transitions, 222 flow. Second operand 6 states and 1633 transitions. [2023-08-30 14:17:44,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 101 transitions, 410 flow [2023-08-30 14:17:44,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 101 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:17:44,557 INFO L231 Difference]: Finished difference. Result has 104 places, 101 transitions, 257 flow [2023-08-30 14:17:44,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=104, PETRI_TRANSITIONS=101} [2023-08-30 14:17:44,558 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 9 predicate places. [2023-08-30 14:17:44,558 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 101 transitions, 257 flow [2023-08-30 14:17:44,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.57142857142856) internal successors, (1810), 7 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:44,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:44,558 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 14:17:44,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 14:17:44,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:17:44,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-08-30 14:17:44,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:44,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1657231680, now seen corresponding path program 2 times [2023-08-30 14:17:44,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:44,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782955931] [2023-08-30 14:17:44,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:44,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:17:44,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:44,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782955931] [2023-08-30 14:17:44,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782955931] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:44,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:44,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:17:44,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522646081] [2023-08-30 14:17:44,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:44,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:17:44,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:44,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:17:44,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:17:44,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 561 [2023-08-30 14:17:44,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:44,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:44,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 561 [2023-08-30 14:17:44,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:47,274 INFO L130 PetriNetUnfolder]: 31852/49102 cut-off events. [2023-08-30 14:17:47,274 INFO L131 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2023-08-30 14:17:47,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95697 conditions, 49102 events. 31852/49102 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 1588. Compared 370081 event pairs, 13860 based on Foata normal form. 0/32075 useless extension candidates. Maximal degree in co-relation 95683. Up to 46370 conditions per place. [2023-08-30 14:17:47,469 INFO L137 encePairwiseOnDemand]: 556/561 looper letters, 112 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2023-08-30 14:17:47,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 127 transitions, 537 flow [2023-08-30 14:17:47,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:17:47,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:17:47,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 887 transitions. [2023-08-30 14:17:47,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270350564468211 [2023-08-30 14:17:47,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 887 transitions. [2023-08-30 14:17:47,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 887 transitions. [2023-08-30 14:17:47,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:47,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 887 transitions. [2023-08-30 14:17:47,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:47,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:47,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:47,475 INFO L175 Difference]: Start difference. First operand has 104 places, 101 transitions, 257 flow. Second operand 3 states and 887 transitions. [2023-08-30 14:17:47,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 127 transitions, 537 flow [2023-08-30 14:17:47,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 127 transitions, 523 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:17:47,478 INFO L231 Difference]: Finished difference. Result has 106 places, 102 transitions, 259 flow [2023-08-30 14:17:47,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=106, PETRI_TRANSITIONS=102} [2023-08-30 14:17:47,478 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 11 predicate places. [2023-08-30 14:17:47,478 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 102 transitions, 259 flow [2023-08-30 14:17:47,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:47,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:47,479 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:17:47,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:17:47,479 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-08-30 14:17:47,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:47,479 INFO L85 PathProgramCache]: Analyzing trace with hash -703471630, now seen corresponding path program 1 times [2023-08-30 14:17:47,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:47,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108804853] [2023-08-30 14:17:47,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:47,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:17:47,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:47,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108804853] [2023-08-30 14:17:47,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108804853] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:17:47,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133631225] [2023-08-30 14:17:47,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:47,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:17:47,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:17:47,544 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:17:47,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 14:17:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:47,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:17:47,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:17:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:17:47,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:17:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:17:47,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133631225] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:17:47,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:17:47,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:17:47,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890305796] [2023-08-30 14:17:47,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:17:47,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:17:47,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:47,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:17:47,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:17:47,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 561 [2023-08-30 14:17:47,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 102 transitions, 259 flow. Second operand has 13 states, 13 states have (on average 258.61538461538464) internal successors, (3362), 13 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:47,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:47,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 561 [2023-08-30 14:17:47,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:50,401 INFO L130 PetriNetUnfolder]: 32302/49012 cut-off events. [2023-08-30 14:17:50,401 INFO L131 PetriNetUnfolder]: For 1418/1418 co-relation queries the response was YES. [2023-08-30 14:17:50,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97867 conditions, 49012 events. 32302/49012 cut-off events. For 1418/1418 co-relation queries the response was YES. Maximal size of possible extension queue 1604. Compared 359149 event pairs, 28764 based on Foata normal form. 6/32550 useless extension candidates. Maximal degree in co-relation 97852. Up to 46393 conditions per place. [2023-08-30 14:17:50,600 INFO L137 encePairwiseOnDemand]: 558/561 looper letters, 84 selfloop transitions, 11 changer transitions 0/108 dead transitions. [2023-08-30 14:17:50,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 108 transitions, 485 flow [2023-08-30 14:17:50,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:17:50,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:17:50,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3184 transitions. [2023-08-30 14:17:50,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47296494355317886 [2023-08-30 14:17:50,605 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3184 transitions. [2023-08-30 14:17:50,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3184 transitions. [2023-08-30 14:17:50,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:50,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3184 transitions. [2023-08-30 14:17:50,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 265.3333333333333) internal successors, (3184), 12 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:50,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 561.0) internal successors, (7293), 13 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:50,617 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 561.0) internal successors, (7293), 13 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:50,617 INFO L175 Difference]: Start difference. First operand has 106 places, 102 transitions, 259 flow. Second operand 12 states and 3184 transitions. [2023-08-30 14:17:50,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 108 transitions, 485 flow [2023-08-30 14:17:50,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 108 transitions, 483 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:17:50,620 INFO L231 Difference]: Finished difference. Result has 122 places, 108 transitions, 341 flow [2023-08-30 14:17:50,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=341, PETRI_PLACES=122, PETRI_TRANSITIONS=108} [2023-08-30 14:17:50,621 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 27 predicate places. [2023-08-30 14:17:50,621 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 108 transitions, 341 flow [2023-08-30 14:17:50,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 258.61538461538464) internal successors, (3362), 13 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:50,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:50,622 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:17:50,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 14:17:50,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 14:17:50,826 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-08-30 14:17:50,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:50,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1796861824, now seen corresponding path program 1 times [2023-08-30 14:17:50,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:50,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478736551] [2023-08-30 14:17:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:50,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:17:50,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:50,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478736551] [2023-08-30 14:17:50,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478736551] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:50,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:50,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:17:50,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894503849] [2023-08-30 14:17:50,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:50,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:17:50,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:50,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:17:50,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:17:50,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 561 [2023-08-30 14:17:50,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 108 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:50,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:50,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 561 [2023-08-30 14:17:50,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:53,399 INFO L130 PetriNetUnfolder]: 31157/47289 cut-off events. [2023-08-30 14:17:53,399 INFO L131 PetriNetUnfolder]: For 1381/1381 co-relation queries the response was YES. [2023-08-30 14:17:53,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93942 conditions, 47289 events. 31157/47289 cut-off events. For 1381/1381 co-relation queries the response was YES. Maximal size of possible extension queue 1532. Compared 343853 event pairs, 27707 based on Foata normal form. 0/31753 useless extension candidates. Maximal degree in co-relation 93920. Up to 44734 conditions per place. [2023-08-30 14:17:53,648 INFO L137 encePairwiseOnDemand]: 559/561 looper letters, 93 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2023-08-30 14:17:53,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 107 transitions, 525 flow [2023-08-30 14:17:53,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:17:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:17:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 858 transitions. [2023-08-30 14:17:53,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2023-08-30 14:17:53,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 858 transitions. [2023-08-30 14:17:53,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 858 transitions. [2023-08-30 14:17:53,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:53,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 858 transitions. [2023-08-30 14:17:53,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:53,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:53,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:53,655 INFO L175 Difference]: Start difference. First operand has 122 places, 108 transitions, 341 flow. Second operand 3 states and 858 transitions. [2023-08-30 14:17:53,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 107 transitions, 525 flow [2023-08-30 14:17:53,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 107 transitions, 477 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 14:17:53,657 INFO L231 Difference]: Finished difference. Result has 118 places, 107 transitions, 291 flow [2023-08-30 14:17:53,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=118, PETRI_TRANSITIONS=107} [2023-08-30 14:17:53,658 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 23 predicate places. [2023-08-30 14:17:53,658 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 107 transitions, 291 flow [2023-08-30 14:17:53,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:53,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:53,659 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:17:53,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:17:53,659 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-08-30 14:17:53,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:53,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1796861823, now seen corresponding path program 1 times [2023-08-30 14:17:53,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:53,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098860722] [2023-08-30 14:17:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:53,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:53,698 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 14:17:53,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:53,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098860722] [2023-08-30 14:17:53,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098860722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:53,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:53,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:17:53,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11015485] [2023-08-30 14:17:53,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:53,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:17:53,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:53,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:17:53,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:17:53,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 561 [2023-08-30 14:17:53,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 107 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:53,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:53,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 561 [2023-08-30 14:17:53,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:56,086 INFO L130 PetriNetUnfolder]: 29115/46175 cut-off events. [2023-08-30 14:17:56,086 INFO L131 PetriNetUnfolder]: For 770/770 co-relation queries the response was YES. [2023-08-30 14:17:56,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90599 conditions, 46175 events. 29115/46175 cut-off events. For 770/770 co-relation queries the response was YES. Maximal size of possible extension queue 1298. Compared 362661 event pairs, 1609 based on Foata normal form. 0/31762 useless extension candidates. Maximal degree in co-relation 90578. Up to 40232 conditions per place. [2023-08-30 14:17:56,344 INFO L137 encePairwiseOnDemand]: 557/561 looper letters, 137 selfloop transitions, 4 changer transitions 0/154 dead transitions. [2023-08-30 14:17:56,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 154 transitions, 665 flow [2023-08-30 14:17:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:17:56,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:17:56,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 902 transitions. [2023-08-30 14:17:56,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2023-08-30 14:17:56,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 902 transitions. [2023-08-30 14:17:56,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 902 transitions. [2023-08-30 14:17:56,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:56,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 902 transitions. [2023-08-30 14:17:56,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:56,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:56,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:56,351 INFO L175 Difference]: Start difference. First operand has 118 places, 107 transitions, 291 flow. Second operand 3 states and 902 transitions. [2023-08-30 14:17:56,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 154 transitions, 665 flow [2023-08-30 14:17:56,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 154 transitions, 664 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:17:56,355 INFO L231 Difference]: Finished difference. Result has 119 places, 107 transitions, 302 flow [2023-08-30 14:17:56,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=119, PETRI_TRANSITIONS=107} [2023-08-30 14:17:56,355 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 24 predicate places. [2023-08-30 14:17:56,355 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 107 transitions, 302 flow [2023-08-30 14:17:56,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:56,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:56,356 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:17:56,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:17:56,356 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-08-30 14:17:56,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:56,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1398517006, now seen corresponding path program 2 times [2023-08-30 14:17:56,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:56,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407542430] [2023-08-30 14:17:56,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:56,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:17:56,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:56,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407542430] [2023-08-30 14:17:56,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407542430] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:56,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:56,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:17:56,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447510293] [2023-08-30 14:17:56,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:56,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:17:56,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:56,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:17:56,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:17:56,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 561 [2023-08-30 14:17:56,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 107 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 248.66666666666666) internal successors, (1492), 6 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:56,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:56,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 561 [2023-08-30 14:17:56,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:18:01,428 INFO L130 PetriNetUnfolder]: 55309/84459 cut-off events. [2023-08-30 14:18:01,429 INFO L131 PetriNetUnfolder]: For 9796/9796 co-relation queries the response was YES. [2023-08-30 14:18:01,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172188 conditions, 84459 events. 55309/84459 cut-off events. For 9796/9796 co-relation queries the response was YES. Maximal size of possible extension queue 2464. Compared 678448 event pairs, 9326 based on Foata normal form. 0/56793 useless extension candidates. Maximal degree in co-relation 172167. Up to 44585 conditions per place. [2023-08-30 14:18:01,957 INFO L137 encePairwiseOnDemand]: 548/561 looper letters, 308 selfloop transitions, 26 changer transitions 0/347 dead transitions. [2023-08-30 14:18:01,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 347 transitions, 1528 flow [2023-08-30 14:18:01,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:18:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:18:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2052 transitions. [2023-08-30 14:18:01,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225362872421696 [2023-08-30 14:18:01,961 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2052 transitions. [2023-08-30 14:18:01,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2052 transitions. [2023-08-30 14:18:01,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:18:01,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2052 transitions. [2023-08-30 14:18:01,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 293.14285714285717) internal successors, (2052), 7 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:01,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 561.0) internal successors, (4488), 8 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:01,968 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 561.0) internal successors, (4488), 8 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:01,968 INFO L175 Difference]: Start difference. First operand has 119 places, 107 transitions, 302 flow. Second operand 7 states and 2052 transitions. [2023-08-30 14:18:01,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 347 transitions, 1528 flow [2023-08-30 14:18:01,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 347 transitions, 1515 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:18:01,975 INFO L231 Difference]: Finished difference. Result has 129 places, 132 transitions, 474 flow [2023-08-30 14:18:01,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=474, PETRI_PLACES=129, PETRI_TRANSITIONS=132} [2023-08-30 14:18:01,977 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 34 predicate places. [2023-08-30 14:18:01,977 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 132 transitions, 474 flow [2023-08-30 14:18:01,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.66666666666666) internal successors, (1492), 6 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:01,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:01,977 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:18:01,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:18:01,978 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-08-30 14:18:01,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:01,978 INFO L85 PathProgramCache]: Analyzing trace with hash 618634144, now seen corresponding path program 1 times [2023-08-30 14:18:01,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:01,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997714799] [2023-08-30 14:18:01,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:01,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:18:02,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:18:02,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997714799] [2023-08-30 14:18:02,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997714799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:18:02,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:18:02,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:18:02,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138145504] [2023-08-30 14:18:02,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:18:02,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:18:02,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:18:02,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:18:02,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:18:02,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 561 [2023-08-30 14:18:02,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 132 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:02,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:18:02,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 561 [2023-08-30 14:18:02,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:18:11,745 INFO L130 PetriNetUnfolder]: 95988/146548 cut-off events. [2023-08-30 14:18:11,745 INFO L131 PetriNetUnfolder]: For 49333/49333 co-relation queries the response was YES. [2023-08-30 14:18:12,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333687 conditions, 146548 events. 95988/146548 cut-off events. For 49333/49333 co-relation queries the response was YES. Maximal size of possible extension queue 4168. Compared 1237982 event pairs, 76605 based on Foata normal form. 857/107783 useless extension candidates. Maximal degree in co-relation 333659. Up to 82759 conditions per place. [2023-08-30 14:18:12,840 INFO L137 encePairwiseOnDemand]: 556/561 looper letters, 215 selfloop transitions, 2 changer transitions 0/230 dead transitions. [2023-08-30 14:18:12,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 230 transitions, 1240 flow [2023-08-30 14:18:12,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:18:12,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:18:12,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 932 transitions. [2023-08-30 14:18:12,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5537730243612596 [2023-08-30 14:18:12,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 932 transitions. [2023-08-30 14:18:12,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 932 transitions. [2023-08-30 14:18:12,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:18:12,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 932 transitions. [2023-08-30 14:18:12,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:12,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:12,845 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:12,846 INFO L175 Difference]: Start difference. First operand has 129 places, 132 transitions, 474 flow. Second operand 3 states and 932 transitions. [2023-08-30 14:18:12,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 230 transitions, 1240 flow [2023-08-30 14:18:13,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 230 transitions, 1240 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:18:13,245 INFO L231 Difference]: Finished difference. Result has 132 places, 133 transitions, 490 flow [2023-08-30 14:18:13,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=490, PETRI_PLACES=132, PETRI_TRANSITIONS=133} [2023-08-30 14:18:13,246 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 37 predicate places. [2023-08-30 14:18:13,246 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 133 transitions, 490 flow [2023-08-30 14:18:13,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:13,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:13,246 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:18:13,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:18:13,246 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-08-30 14:18:13,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:13,247 INFO L85 PathProgramCache]: Analyzing trace with hash 207421948, now seen corresponding path program 1 times [2023-08-30 14:18:13,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:13,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772420571] [2023-08-30 14:18:13,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:13,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:18:13,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:18:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:18:13,293 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:18:13,293 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:18:13,293 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-08-30 14:18:13,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2023-08-30 14:18:13,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2023-08-30 14:18:13,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2023-08-30 14:18:13,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2023-08-30 14:18:13,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2023-08-30 14:18:13,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2023-08-30 14:18:13,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2023-08-30 14:18:13,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2023-08-30 14:18:13,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2023-08-30 14:18:13,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2023-08-30 14:18:13,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2023-08-30 14:18:13,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2023-08-30 14:18:13,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2023-08-30 14:18:13,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2023-08-30 14:18:13,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2023-08-30 14:18:13,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2023-08-30 14:18:13,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2023-08-30 14:18:13,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2023-08-30 14:18:13,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2023-08-30 14:18:13,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2023-08-30 14:18:13,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2023-08-30 14:18:13,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2023-08-30 14:18:13,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2023-08-30 14:18:13,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2023-08-30 14:18:13,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2023-08-30 14:18:13,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2023-08-30 14:18:13,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2023-08-30 14:18:13,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2023-08-30 14:18:13,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2023-08-30 14:18:13,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2023-08-30 14:18:13,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:18:13,297 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:18:13,298 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:18:13,298 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:18:13,324 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:18:13,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 390 transitions, 810 flow [2023-08-30 14:18:13,384 INFO L130 PetriNetUnfolder]: 120/777 cut-off events. [2023-08-30 14:18:13,384 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:18:13,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 777 events. 120/777 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3933 event pairs, 1 based on Foata normal form. 0/589 useless extension candidates. Maximal degree in co-relation 536. Up to 16 conditions per place. [2023-08-30 14:18:13,392 INFO L82 GeneralOperation]: Start removeDead. Operand has 334 places, 390 transitions, 810 flow [2023-08-30 14:18:13,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 390 transitions, 810 flow [2023-08-30 14:18:13,397 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:18:13,397 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 334 places, 390 transitions, 810 flow [2023-08-30 14:18:13,397 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 334 places, 390 transitions, 810 flow [2023-08-30 14:18:13,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 390 transitions, 810 flow [2023-08-30 14:18:13,456 INFO L130 PetriNetUnfolder]: 120/777 cut-off events. [2023-08-30 14:18:13,456 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:18:13,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 777 events. 120/777 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3933 event pairs, 1 based on Foata normal form. 0/589 useless extension candidates. Maximal degree in co-relation 536. Up to 16 conditions per place. [2023-08-30 14:18:13,484 INFO L119 LiptonReduction]: Number of co-enabled transitions 92640 [2023-08-30 14:18:16,552 INFO L134 LiptonReduction]: Checked pairs total: 162550 [2023-08-30 14:18:16,552 INFO L136 LiptonReduction]: Total number of compositions: 321 [2023-08-30 14:18:16,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:18:16,553 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;@386312ac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:18:16,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-08-30 14:18:16,554 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:18:16,554 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:18:16,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:16,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:18:16,555 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 14:18:16,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:16,555 INFO L85 PathProgramCache]: Analyzing trace with hash 74593, now seen corresponding path program 1 times [2023-08-30 14:18:16,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:16,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189405622] [2023-08-30 14:18:16,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:16,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:16,570 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 14:18:16,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:18:16,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189405622] [2023-08-30 14:18:16,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189405622] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:18:16,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:18:16,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:18:16,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905773049] [2023-08-30 14:18:16,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:18:16,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:18:16,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:18:16,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:18:16,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:18:16,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 711 [2023-08-30 14:18:16,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 168 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:16,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:18:16,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 711 [2023-08-30 14:18:16,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand