./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df --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 14:08:18,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:08:18,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:08:18,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:08:18,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:08:18,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:08:18,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:08:18,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:08:18,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:08:18,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:08:18,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:08:18,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:08:18,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:08:18,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:08:18,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:08:18,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:08:18,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:08:18,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:08:18,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:08:18,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:08:18,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:08:18,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:08:18,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:08:18,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:08:18,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:08:18,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:08:18,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:08:18,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:08:18,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:08:18,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:08:18,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:08:18,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:08:18,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:08:18,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:08:18,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:08:18,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:08:18,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:08:18,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:08:18,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:08:18,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:08:18,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:08:18,541 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:08:18,574 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:08:18,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:08:18,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:08:18,575 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:08:18,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:08:18,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:08:18,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:08:18,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:08:18,577 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:08:18,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:08:18,578 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:08:18,579 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:08:18,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:08:18,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:08:18,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:08:18,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:08:18,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:08:18,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:08:18,580 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:08:18,580 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:08:18,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:08:18,581 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:08:18,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:08:18,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:08:18,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:08:18,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:08:18,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:08:18,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:08:18,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:08:18,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:08:18,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:08:18,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:08:18,583 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:08:18,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:08:18,583 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:08:18,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:08:18,584 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:08:18,584 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:08:18,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:08:18,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:08:18,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:08:18,917 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:08:18,917 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:08:18,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-08-30 14:08:20,071 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:08:20,282 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:08:20,283 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-08-30 14:08:20,302 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ac760725/805658ee72ba464e81b808928bd8c46e/FLAGc523b325a [2023-08-30 14:08:20,318 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ac760725/805658ee72ba464e81b808928bd8c46e [2023-08-30 14:08:20,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:08:20,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:08:20,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:08:20,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:08:20,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:08:20,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:08:20" (1/1) ... [2023-08-30 14:08:20,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b6306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:20, skipping insertion in model container [2023-08-30 14:08:20,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:08:20" (1/1) ... [2023-08-30 14:08:20,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:08:20,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:08:20,580 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_11-ptr_racing.i[30176,30189] [2023-08-30 14:08:20,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:08:20,613 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:08:20,662 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_11-ptr_racing.i[30176,30189] [2023-08-30 14:08:20,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:08:20,726 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:08:20,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:20 WrapperNode [2023-08-30 14:08:20,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:08:20,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:08:20,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:08:20,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:08:20,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:20" (1/1) ... [2023-08-30 14:08:20,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:20" (1/1) ... [2023-08-30 14:08:20,780 INFO L138 Inliner]: procedures = 170, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2023-08-30 14:08:20,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:08:20,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:08:20,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:08:20,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:08:20,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:20" (1/1) ... [2023-08-30 14:08:20,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:20" (1/1) ... [2023-08-30 14:08:20,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:20" (1/1) ... [2023-08-30 14:08:20,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:20" (1/1) ... [2023-08-30 14:08:20,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:20" (1/1) ... [2023-08-30 14:08:20,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:20" (1/1) ... [2023-08-30 14:08:20,804 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:20" (1/1) ... [2023-08-30 14:08:20,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:20" (1/1) ... [2023-08-30 14:08:20,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:08:20,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:08:20,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:08:20,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:08:20,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:20" (1/1) ... [2023-08-30 14:08:20,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:08:20,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:08:20,836 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 14:08:20,841 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 14:08:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:08:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:08:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:08:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:08:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:08:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:08:20,864 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:08:20,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:08:20,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:08:20,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:08:20,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:08:20,866 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 14:08:21,015 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:08:21,038 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:08:21,314 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:08:21,320 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:08:21,322 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 14:08:21,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:08:21 BoogieIcfgContainer [2023-08-30 14:08:21,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:08:21,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:08:21,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:08:21,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:08:21,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:08:20" (1/3) ... [2023-08-30 14:08:21,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72810ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:08:21, skipping insertion in model container [2023-08-30 14:08:21,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:20" (2/3) ... [2023-08-30 14:08:21,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72810ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:08:21, skipping insertion in model container [2023-08-30 14:08:21,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:08:21" (3/3) ... [2023-08-30 14:08:21,332 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2023-08-30 14:08:21,339 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:08:21,347 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:08:21,348 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 14:08:21,348 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:08:21,438 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:08:21,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 130 transitions, 268 flow [2023-08-30 14:08:21,544 INFO L130 PetriNetUnfolder]: 17/164 cut-off events. [2023-08-30 14:08:21,544 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:08:21,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 164 events. 17/164 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 392 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-08-30 14:08:21,550 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 130 transitions, 268 flow [2023-08-30 14:08:21,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 127 transitions, 262 flow [2023-08-30 14:08:21,561 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:08:21,573 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 127 transitions, 262 flow [2023-08-30 14:08:21,575 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 127 transitions, 262 flow [2023-08-30 14:08:21,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 127 transitions, 262 flow [2023-08-30 14:08:21,601 INFO L130 PetriNetUnfolder]: 16/161 cut-off events. [2023-08-30 14:08:21,602 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:08:21,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 161 events. 16/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 389 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-08-30 14:08:21,605 INFO L119 LiptonReduction]: Number of co-enabled transitions 3608 [2023-08-30 14:08:24,947 INFO L134 LiptonReduction]: Checked pairs total: 7074 [2023-08-30 14:08:24,947 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-08-30 14:08:24,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:08:24,963 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;@56488107, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:08:24,964 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 14:08:24,967 INFO L130 PetriNetUnfolder]: 1/11 cut-off events. [2023-08-30 14:08:24,967 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:08:24,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:24,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:08:24,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:08:24,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:24,973 INFO L85 PathProgramCache]: Analyzing trace with hash 15242318, now seen corresponding path program 1 times [2023-08-30 14:08:24,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:24,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547735010] [2023-08-30 14:08:24,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:24,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:25,229 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 14:08:25,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547735010] [2023-08-30 14:08:25,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547735010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:25,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:08:25,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:08:25,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659511989] [2023-08-30 14:08:25,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:25,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:08:25,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:25,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:08:25,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:08:25,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 241 [2023-08-30 14:08:25,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:25,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:25,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 241 [2023-08-30 14:08:25,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:25,349 INFO L130 PetriNetUnfolder]: 98/232 cut-off events. [2023-08-30 14:08:25,349 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:08:25,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 232 events. 98/232 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 851 event pairs, 78 based on Foata normal form. 8/191 useless extension candidates. Maximal degree in co-relation 441. Up to 207 conditions per place. [2023-08-30 14:08:25,352 INFO L137 encePairwiseOnDemand]: 227/241 looper letters, 39 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-30 14:08:25,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 178 flow [2023-08-30 14:08:25,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:08:25,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:08:25,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2023-08-30 14:08:25,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5463347164591977 [2023-08-30 14:08:25,375 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2023-08-30 14:08:25,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2023-08-30 14:08:25,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:25,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2023-08-30 14:08:25,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:25,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:25,391 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:25,392 INFO L175 Difference]: Start difference. First operand has 35 places, 40 transitions, 88 flow. Second operand 3 states and 395 transitions. [2023-08-30 14:08:25,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 178 flow [2023-08-30 14:08:25,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:08:25,397 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 74 flow [2023-08-30 14:08:25,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-30 14:08:25,403 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-30 14:08:25,404 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 74 flow [2023-08-30 14:08:25,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:25,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:25,405 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:08:25,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:08:25,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:08:25,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:25,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1762980726, now seen corresponding path program 1 times [2023-08-30 14:08:25,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:25,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359559800] [2023-08-30 14:08:25,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:25,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:08:25,470 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:08:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:08:25,510 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:08:25,513 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:08:25,515 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-08-30 14:08:25,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-30 14:08:25,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-30 14:08:25,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-30 14:08:25,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-30 14:08:25,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-30 14:08:25,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-30 14:08:25,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-30 14:08:25,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-30 14:08:25,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-30 14:08:25,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-30 14:08:25,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-30 14:08:25,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-30 14:08:25,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:08:25,527 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 14:08:25,532 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:08:25,532 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:08:25,562 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:08:25,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 173 transitions, 364 flow [2023-08-30 14:08:25,629 INFO L130 PetriNetUnfolder]: 31/277 cut-off events. [2023-08-30 14:08:25,630 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:08:25,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 277 events. 31/277 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 860 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 166. Up to 8 conditions per place. [2023-08-30 14:08:25,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 173 transitions, 364 flow [2023-08-30 14:08:25,638 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 173 transitions, 364 flow [2023-08-30 14:08:25,638 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:08:25,638 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 173 transitions, 364 flow [2023-08-30 14:08:25,639 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 173 transitions, 364 flow [2023-08-30 14:08:25,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 173 transitions, 364 flow [2023-08-30 14:08:25,670 INFO L130 PetriNetUnfolder]: 31/277 cut-off events. [2023-08-30 14:08:25,671 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:08:25,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 277 events. 31/277 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 860 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 166. Up to 8 conditions per place. [2023-08-30 14:08:25,682 INFO L119 LiptonReduction]: Number of co-enabled transitions 12136 [2023-08-30 14:08:29,077 INFO L134 LiptonReduction]: Checked pairs total: 27722 [2023-08-30 14:08:29,078 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-08-30 14:08:29,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:08:29,081 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;@56488107, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:08:29,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 14:08:29,083 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-08-30 14:08:29,083 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:08:29,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:29,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:08:29,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:08:29,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:29,084 INFO L85 PathProgramCache]: Analyzing trace with hash 815692049, now seen corresponding path program 1 times [2023-08-30 14:08:29,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:29,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614246495] [2023-08-30 14:08:29,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:29,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:29,134 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 14:08:29,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:29,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614246495] [2023-08-30 14:08:29,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614246495] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:29,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:08:29,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:08:29,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72867571] [2023-08-30 14:08:29,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:29,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:08:29,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:29,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:08:29,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:08:29,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 317 [2023-08-30 14:08:29,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:29,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:29,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 317 [2023-08-30 14:08:29,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:29,746 INFO L130 PetriNetUnfolder]: 4435/7401 cut-off events. [2023-08-30 14:08:29,747 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-30 14:08:29,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14568 conditions, 7401 events. 4435/7401 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 48892 event pairs, 2080 based on Foata normal form. 710/5791 useless extension candidates. Maximal degree in co-relation 1678. Up to 7046 conditions per place. [2023-08-30 14:08:29,785 INFO L137 encePairwiseOnDemand]: 298/317 looper letters, 58 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-30 14:08:29,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 272 flow [2023-08-30 14:08:29,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:08:29,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:08:29,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2023-08-30 14:08:29,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509989484752892 [2023-08-30 14:08:29,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2023-08-30 14:08:29,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2023-08-30 14:08:29,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:29,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2023-08-30 14:08:29,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:29,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:29,795 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:29,795 INFO L175 Difference]: Start difference. First operand has 55 places, 66 transitions, 150 flow. Second operand 3 states and 524 transitions. [2023-08-30 14:08:29,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 272 flow [2023-08-30 14:08:29,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:08:29,798 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 138 flow [2023-08-30 14:08:29,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-08-30 14:08:29,799 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-08-30 14:08:29,801 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 138 flow [2023-08-30 14:08:29,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:29,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:29,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:08:29,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:08:29,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:08:29,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:29,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2091943438, now seen corresponding path program 1 times [2023-08-30 14:08:29,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:29,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186481021] [2023-08-30 14:08:29,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:29,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:29,960 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 14:08:29,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:29,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186481021] [2023-08-30 14:08:29,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186481021] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:29,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:08:29,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:08:29,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955705290] [2023-08-30 14:08:29,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:29,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:08:29,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:29,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:08:29,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:08:30,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 317 [2023-08-30 14:08:30,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 141.2) internal successors, (706), 5 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:30,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:30,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 317 [2023-08-30 14:08:30,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:31,072 INFO L130 PetriNetUnfolder]: 6536/10939 cut-off events. [2023-08-30 14:08:31,073 INFO L131 PetriNetUnfolder]: For 579/579 co-relation queries the response was YES. [2023-08-30 14:08:31,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22467 conditions, 10939 events. 6536/10939 cut-off events. For 579/579 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 77864 event pairs, 1484 based on Foata normal form. 0/7920 useless extension candidates. Maximal degree in co-relation 22379. Up to 6110 conditions per place. [2023-08-30 14:08:31,139 INFO L137 encePairwiseOnDemand]: 306/317 looper letters, 134 selfloop transitions, 18 changer transitions 0/159 dead transitions. [2023-08-30 14:08:31,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 159 transitions, 695 flow [2023-08-30 14:08:31,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:08:31,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:08:31,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 993 transitions. [2023-08-30 14:08:31,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220820189274448 [2023-08-30 14:08:31,143 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 993 transitions. [2023-08-30 14:08:31,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 993 transitions. [2023-08-30 14:08:31,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:31,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 993 transitions. [2023-08-30 14:08:31,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 165.5) internal successors, (993), 6 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:31,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:31,150 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:31,151 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 138 flow. Second operand 6 states and 993 transitions. [2023-08-30 14:08:31,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 159 transitions, 695 flow [2023-08-30 14:08:31,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 159 transitions, 691 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:08:31,156 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 268 flow [2023-08-30 14:08:31,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2023-08-30 14:08:31,157 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2023-08-30 14:08:31,157 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 268 flow [2023-08-30 14:08:31,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.2) internal successors, (706), 5 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:31,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:31,158 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:08:31,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:08:31,159 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:08:31,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:31,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1569460881, now seen corresponding path program 1 times [2023-08-30 14:08:31,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:31,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432564290] [2023-08-30 14:08:31,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:31,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:08:31,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:31,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432564290] [2023-08-30 14:08:31,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432564290] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:31,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:08:31,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:08:31,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569511745] [2023-08-30 14:08:31,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:31,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:08:31,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:31,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:08:31,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:08:31,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 317 [2023-08-30 14:08:31,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:31,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:31,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 317 [2023-08-30 14:08:31,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:32,007 INFO L130 PetriNetUnfolder]: 6136/10167 cut-off events. [2023-08-30 14:08:32,008 INFO L131 PetriNetUnfolder]: For 3977/3977 co-relation queries the response was YES. [2023-08-30 14:08:32,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25214 conditions, 10167 events. 6136/10167 cut-off events. For 3977/3977 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 71157 event pairs, 2091 based on Foata normal form. 0/8152 useless extension candidates. Maximal degree in co-relation 20314. Up to 8205 conditions per place. [2023-08-30 14:08:32,060 INFO L137 encePairwiseOnDemand]: 313/317 looper letters, 89 selfloop transitions, 5 changer transitions 0/101 dead transitions. [2023-08-30 14:08:32,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 101 transitions, 556 flow [2023-08-30 14:08:32,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:08:32,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:08:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-08-30 14:08:32,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362776025236593 [2023-08-30 14:08:32,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-08-30 14:08:32,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-08-30 14:08:32,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:32,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-08-30 14:08:32,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:32,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:32,121 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:32,121 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 268 flow. Second operand 3 states and 510 transitions. [2023-08-30 14:08:32,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 101 transitions, 556 flow [2023-08-30 14:08:32,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 556 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:08:32,137 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 285 flow [2023-08-30 14:08:32,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2023-08-30 14:08:32,138 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2023-08-30 14:08:32,138 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 285 flow [2023-08-30 14:08:32,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:32,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:32,139 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:08:32,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:08:32,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:08:32,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:32,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1569460882, now seen corresponding path program 1 times [2023-08-30 14:08:32,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:32,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860693534] [2023-08-30 14:08:32,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:32,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:08:32,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:32,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860693534] [2023-08-30 14:08:32,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860693534] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:08:32,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051269059] [2023-08-30 14:08:32,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:32,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:08:32,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:08:32,182 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 14:08:32,224 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 14:08:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:32,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:08:32,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:08:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:08:32,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:08:32,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051269059] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:32,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:08:32,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:08:32,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980534642] [2023-08-30 14:08:32,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:32,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:08:32,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:32,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:08:32,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:08:32,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 317 [2023-08-30 14:08:32,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:32,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:32,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 317 [2023-08-30 14:08:32,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:33,198 INFO L130 PetriNetUnfolder]: 5736/9667 cut-off events. [2023-08-30 14:08:33,199 INFO L131 PetriNetUnfolder]: For 6367/6367 co-relation queries the response was YES. [2023-08-30 14:08:33,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24412 conditions, 9667 events. 5736/9667 cut-off events. For 6367/6367 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 66363 event pairs, 3335 based on Foata normal form. 214/8175 useless extension candidates. Maximal degree in co-relation 19785. Up to 9263 conditions per place. [2023-08-30 14:08:33,262 INFO L137 encePairwiseOnDemand]: 314/317 looper letters, 71 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-08-30 14:08:33,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 80 transitions, 459 flow [2023-08-30 14:08:33,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:08:33,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:08:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 645 transitions. [2023-08-30 14:08:33,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5086750788643533 [2023-08-30 14:08:33,265 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 645 transitions. [2023-08-30 14:08:33,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 645 transitions. [2023-08-30 14:08:33,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:33,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 645 transitions. [2023-08-30 14:08:33,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.25) internal successors, (645), 4 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:33,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 317.0) internal successors, (1585), 5 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:33,271 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 317.0) internal successors, (1585), 5 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:33,271 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 285 flow. Second operand 4 states and 645 transitions. [2023-08-30 14:08:33,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 80 transitions, 459 flow [2023-08-30 14:08:33,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 80 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:08:33,283 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 280 flow [2023-08-30 14:08:33,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2023-08-30 14:08:33,286 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2023-08-30 14:08:33,286 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 280 flow [2023-08-30 14:08:33,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:33,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:33,287 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:08:33,293 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 14:08:33,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 14:08:33,491 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:08:33,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:33,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1119008287, now seen corresponding path program 1 times [2023-08-30 14:08:33,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:33,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508802284] [2023-08-30 14:08:33,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:33,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:33,615 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 14:08:33,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:33,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508802284] [2023-08-30 14:08:33,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508802284] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:08:33,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339009684] [2023-08-30 14:08:33,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:33,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:08:33,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:08:33,617 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 14:08:33,659 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 14:08:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:33,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 14:08:33,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:08:33,756 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:08:33,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:08:33,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:08:33,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:08:33,871 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 14:08:33,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:08:33,919 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_62 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_62) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483647)) is different from false [2023-08-30 14:08:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 14:08:33,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339009684] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:08:33,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:08:33,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-30 14:08:33,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353895083] [2023-08-30 14:08:33,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:08:33,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 14:08:33,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:33,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 14:08:33,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=64, Unknown=2, NotChecked=16, Total=110 [2023-08-30 14:08:34,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 317 [2023-08-30 14:08:34,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 280 flow. Second operand has 11 states, 11 states have (on average 117.18181818181819) internal successors, (1289), 11 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:34,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:34,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 317 [2023-08-30 14:08:34,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:35,136 INFO L130 PetriNetUnfolder]: 5691/9766 cut-off events. [2023-08-30 14:08:35,136 INFO L131 PetriNetUnfolder]: For 5614/5614 co-relation queries the response was YES. [2023-08-30 14:08:35,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24291 conditions, 9766 events. 5691/9766 cut-off events. For 5614/5614 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 68543 event pairs, 2100 based on Foata normal form. 61/8149 useless extension candidates. Maximal degree in co-relation 24174. Up to 7385 conditions per place. [2023-08-30 14:08:35,214 INFO L137 encePairwiseOnDemand]: 307/317 looper letters, 115 selfloop transitions, 21 changer transitions 0/143 dead transitions. [2023-08-30 14:08:35,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 143 transitions, 812 flow [2023-08-30 14:08:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:08:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:08:35,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 809 transitions. [2023-08-30 14:08:35,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42534174553102 [2023-08-30 14:08:35,218 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 809 transitions. [2023-08-30 14:08:35,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 809 transitions. [2023-08-30 14:08:35,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:35,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 809 transitions. [2023-08-30 14:08:35,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 134.83333333333334) internal successors, (809), 6 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:35,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:35,224 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:35,224 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 280 flow. Second operand 6 states and 809 transitions. [2023-08-30 14:08:35,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 143 transitions, 812 flow [2023-08-30 14:08:35,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 143 transitions, 806 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:08:35,242 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 421 flow [2023-08-30 14:08:35,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=421, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2023-08-30 14:08:35,243 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2023-08-30 14:08:35,243 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 421 flow [2023-08-30 14:08:35,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 117.18181818181819) internal successors, (1289), 11 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:35,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:35,244 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:08:35,252 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 14:08:35,449 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,SelfDestructingSolverStorable6 [2023-08-30 14:08:35,449 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:08:35,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:35,450 INFO L85 PathProgramCache]: Analyzing trace with hash 718419593, now seen corresponding path program 1 times [2023-08-30 14:08:35,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:35,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274296358] [2023-08-30 14:08:35,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:35,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:08:35,468 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:08:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:08:35,492 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:08:35,493 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:08:35,493 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-30 14:08:35,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 14:08:35,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 14:08:35,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 14:08:35,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 14:08:35,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 14:08:35,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 14:08:35,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 14:08:35,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-30 14:08:35,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-30 14:08:35,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-30 14:08:35,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 14:08:35,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 14:08:35,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 14:08:35,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 14:08:35,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 14:08:35,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 14:08:35,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:08:35,498 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-30 14:08:35,499 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:08:35,499 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:08:35,527 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:08:35,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 216 transitions, 462 flow [2023-08-30 14:08:35,585 INFO L130 PetriNetUnfolder]: 50/429 cut-off events. [2023-08-30 14:08:35,585 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:08:35,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 429 events. 50/429 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1500 event pairs, 1 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 285. Up to 16 conditions per place. [2023-08-30 14:08:35,589 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 216 transitions, 462 flow [2023-08-30 14:08:35,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 216 transitions, 462 flow [2023-08-30 14:08:35,592 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:08:35,593 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 216 transitions, 462 flow [2023-08-30 14:08:35,593 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 216 transitions, 462 flow [2023-08-30 14:08:35,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 216 transitions, 462 flow [2023-08-30 14:08:35,634 INFO L130 PetriNetUnfolder]: 50/429 cut-off events. [2023-08-30 14:08:35,635 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:08:35,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 429 events. 50/429 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1500 event pairs, 1 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 285. Up to 16 conditions per place. [2023-08-30 14:08:35,657 INFO L119 LiptonReduction]: Number of co-enabled transitions 23616 [2023-08-30 14:08:39,429 INFO L134 LiptonReduction]: Checked pairs total: 52514 [2023-08-30 14:08:39,429 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-08-30 14:08:39,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:08:39,431 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;@56488107, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:08:39,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:08:39,433 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2023-08-30 14:08:39,433 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:08:39,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:39,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:08:39,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:08:39,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:39,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1233967361, now seen corresponding path program 1 times [2023-08-30 14:08:39,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:39,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062031010] [2023-08-30 14:08:39,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:39,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:39,463 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 14:08:39,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:39,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062031010] [2023-08-30 14:08:39,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062031010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:39,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:08:39,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:08:39,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472497271] [2023-08-30 14:08:39,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:39,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:08:39,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:39,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:08:39,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:08:39,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 396 [2023-08-30 14:08:39,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:39,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:39,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 396 [2023-08-30 14:08:39,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:47,228 INFO L130 PetriNetUnfolder]: 97923/138319 cut-off events. [2023-08-30 14:08:47,228 INFO L131 PetriNetUnfolder]: For 2623/2623 co-relation queries the response was YES. [2023-08-30 14:08:47,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276033 conditions, 138319 events. 97923/138319 cut-off events. For 2623/2623 co-relation queries the response was YES. Maximal size of possible extension queue 3395. Compared 992134 event pairs, 97667 based on Foata normal form. 10168/109142 useless extension candidates. Maximal degree in co-relation 65215. Up to 136021 conditions per place. [2023-08-30 14:08:47,929 INFO L137 encePairwiseOnDemand]: 374/396 looper letters, 59 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-08-30 14:08:47,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 286 flow [2023-08-30 14:08:47,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:08:47,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:08:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2023-08-30 14:08:47,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2023-08-30 14:08:47,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2023-08-30 14:08:47,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2023-08-30 14:08:47,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:47,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2023-08-30 14:08:47,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:47,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:47,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:47,938 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 208 flow. Second operand 3 states and 627 transitions. [2023-08-30 14:08:47,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 286 flow [2023-08-30 14:08:47,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 68 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:08:47,944 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 168 flow [2023-08-30 14:08:47,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2023-08-30 14:08:47,945 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 1 predicate places. [2023-08-30 14:08:47,945 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 168 flow [2023-08-30 14:08:47,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:47,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:47,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:08:47,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:08:47,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:08:47,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:47,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1233967363, now seen corresponding path program 1 times [2023-08-30 14:08:47,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:47,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398672756] [2023-08-30 14:08:47,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:47,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:47,971 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 14:08:47,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:47,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398672756] [2023-08-30 14:08:47,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398672756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:47,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:08:47,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:08:47,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195777273] [2023-08-30 14:08:47,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:47,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:08:47,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:47,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:08:47,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:08:47,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 396 [2023-08-30 14:08:47,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:47,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:47,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 396 [2023-08-30 14:08:47,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:55,299 INFO L130 PetriNetUnfolder]: 97909/138682 cut-off events. [2023-08-30 14:08:55,299 INFO L131 PetriNetUnfolder]: For 2657/2657 co-relation queries the response was YES. [2023-08-30 14:08:55,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276393 conditions, 138682 events. 97909/138682 cut-off events. For 2657/2657 co-relation queries the response was YES. Maximal size of possible extension queue 3408. Compared 1000073 event pairs, 63646 based on Foata normal form. 0/99420 useless extension candidates. Maximal degree in co-relation 276384. Up to 135974 conditions per place. [2023-08-30 14:08:55,839 INFO L137 encePairwiseOnDemand]: 392/396 looper letters, 73 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-30 14:08:55,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 348 flow [2023-08-30 14:08:55,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:08:55,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:08:55,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2023-08-30 14:08:55,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244107744107744 [2023-08-30 14:08:55,841 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2023-08-30 14:08:55,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2023-08-30 14:08:55,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:55,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2023-08-30 14:08:55,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:55,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:55,845 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:55,845 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 168 flow. Second operand 3 states and 623 transitions. [2023-08-30 14:08:55,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 348 flow [2023-08-30 14:08:55,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 83 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:08:55,850 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 181 flow [2023-08-30 14:08:55,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2023-08-30 14:08:55,850 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2023-08-30 14:08:55,851 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 181 flow [2023-08-30 14:08:55,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:55,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:55,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:08:55,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:08:55,852 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:08:55,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:55,852 INFO L85 PathProgramCache]: Analyzing trace with hash 441316250, now seen corresponding path program 1 times [2023-08-30 14:08:55,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:55,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393681921] [2023-08-30 14:08:55,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:55,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:55,944 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 14:08:55,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:55,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393681921] [2023-08-30 14:08:55,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393681921] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:55,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:08:55,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:08:55,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684868979] [2023-08-30 14:08:55,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:55,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:08:55,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:55,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:08:55,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:08:56,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 396 [2023-08-30 14:08:56,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 174.2) internal successors, (871), 5 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:56,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:56,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 396 [2023-08-30 14:08:56,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:09:07,331 INFO L130 PetriNetUnfolder]: 152937/217604 cut-off events. [2023-08-30 14:09:07,331 INFO L131 PetriNetUnfolder]: For 10271/10271 co-relation queries the response was YES. [2023-08-30 14:09:07,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443603 conditions, 217604 events. 152937/217604 cut-off events. For 10271/10271 co-relation queries the response was YES. Maximal size of possible extension queue 5236. Compared 1677417 event pairs, 40040 based on Foata normal form. 0/161347 useless extension candidates. Maximal degree in co-relation 443592. Up to 135007 conditions per place. [2023-08-30 14:09:08,503 INFO L137 encePairwiseOnDemand]: 383/396 looper letters, 183 selfloop transitions, 24 changer transitions 0/215 dead transitions. [2023-08-30 14:09:08,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 215 transitions, 944 flow [2023-08-30 14:09:08,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:09:08,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:09:08,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1246 transitions. [2023-08-30 14:09:08,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244107744107744 [2023-08-30 14:09:08,514 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1246 transitions. [2023-08-30 14:09:08,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1246 transitions. [2023-08-30 14:09:08,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:09:08,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1246 transitions. [2023-08-30 14:09:08,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:08,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 396.0) internal successors, (2772), 7 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:08,524 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 396.0) internal successors, (2772), 7 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:08,524 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 181 flow. Second operand 6 states and 1246 transitions. [2023-08-30 14:09:08,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 215 transitions, 944 flow [2023-08-30 14:09:08,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 215 transitions, 940 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:09:08,555 INFO L231 Difference]: Finished difference. Result has 85 places, 92 transitions, 351 flow [2023-08-30 14:09:08,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=351, PETRI_PLACES=85, PETRI_TRANSITIONS=92} [2023-08-30 14:09:08,556 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 12 predicate places. [2023-08-30 14:09:08,556 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 92 transitions, 351 flow [2023-08-30 14:09:08,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 174.2) internal successors, (871), 5 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:08,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:09:08,557 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:09:08,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:09:08,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:09:08,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:09:08,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1732643001, now seen corresponding path program 1 times [2023-08-30 14:09:08,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:09:08,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643504112] [2023-08-30 14:09:08,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:09:08,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:09:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:09:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:09:08,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:09:08,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643504112] [2023-08-30 14:09:08,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643504112] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:09:08,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:09:08,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:09:08,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931740920] [2023-08-30 14:09:08,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:09:08,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:09:08,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:09:08,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:09:08,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:09:08,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 396 [2023-08-30 14:09:08,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 92 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:08,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:09:08,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 396 [2023-08-30 14:09:08,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:09:20,426 INFO L130 PetriNetUnfolder]: 144036/204176 cut-off events. [2023-08-30 14:09:20,426 INFO L131 PetriNetUnfolder]: For 75227/75231 co-relation queries the response was YES. [2023-08-30 14:09:20,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492804 conditions, 204176 events. 144036/204176 cut-off events. For 75227/75231 co-relation queries the response was YES. Maximal size of possible extension queue 4954. Compared 1569751 event pairs, 33398 based on Foata normal form. 0/164861 useless extension candidates. Maximal degree in co-relation 492787. Up to 180171 conditions per place. [2023-08-30 14:09:21,754 INFO L137 encePairwiseOnDemand]: 392/396 looper letters, 126 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2023-08-30 14:09:21,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 139 transitions, 757 flow [2023-08-30 14:09:21,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:09:21,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:09:21,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2023-08-30 14:09:21,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5420875420875421 [2023-08-30 14:09:21,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2023-08-30 14:09:21,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2023-08-30 14:09:21,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:09:21,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2023-08-30 14:09:21,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:21,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:21,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:21,761 INFO L175 Difference]: Start difference. First operand has 85 places, 92 transitions, 351 flow. Second operand 3 states and 644 transitions. [2023-08-30 14:09:21,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 139 transitions, 757 flow [2023-08-30 14:09:21,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 139 transitions, 757 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:09:21,859 INFO L231 Difference]: Finished difference. Result has 87 places, 92 transitions, 368 flow [2023-08-30 14:09:21,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=87, PETRI_TRANSITIONS=92} [2023-08-30 14:09:21,860 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2023-08-30 14:09:21,860 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 368 flow [2023-08-30 14:09:21,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:21,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:09:21,861 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:09:21,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:09:21,861 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:09:21,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:09:21,862 INFO L85 PathProgramCache]: Analyzing trace with hash 349664367, now seen corresponding path program 1 times [2023-08-30 14:09:21,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:09:21,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081920131] [2023-08-30 14:09:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:09:21,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:09:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:09:21,947 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 14:09:21,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:09:21,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081920131] [2023-08-30 14:09:21,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081920131] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:09:21,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524719787] [2023-08-30 14:09:21,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:09:21,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:09:21,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:09:21,950 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 14:09:21,952 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 14:09:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:09:22,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 14:09:22,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:09:22,044 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:09:22,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:09:22,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:09:22,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:09:22,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:09:22,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:09:22,165 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_114 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_114) c_t_funThread1of3ForFork0_~p~0.base) c_t_funThread1of3ForFork0_~p~0.offset)))) is different from false [2023-08-30 14:09:22,179 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_114 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_114) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483650))) is different from false [2023-08-30 14:09:22,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 14:09:22,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524719787] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:09:22,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:09:22,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-30 14:09:22,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784079889] [2023-08-30 14:09:22,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:09:22,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 14:09:22,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:09:22,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 14:09:22,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=53, Unknown=2, NotChecked=30, Total=110 [2023-08-30 14:09:22,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 396 [2023-08-30 14:09:22,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 92 transitions, 368 flow. Second operand has 11 states, 11 states have (on average 147.1818181818182) internal successors, (1619), 11 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:22,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:09:22,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 396 [2023-08-30 14:09:22,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:09:38,996 INFO L130 PetriNetUnfolder]: 191637/271590 cut-off events. [2023-08-30 14:09:38,996 INFO L131 PetriNetUnfolder]: For 153083/153083 co-relation queries the response was YES. [2023-08-30 14:09:39,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671777 conditions, 271590 events. 191637/271590 cut-off events. For 153083/153083 co-relation queries the response was YES. Maximal size of possible extension queue 6524. Compared 2085578 event pairs, 76241 based on Foata normal form. 421/219393 useless extension candidates. Maximal degree in co-relation 671757. Up to 185411 conditions per place. [2023-08-30 14:09:40,578 INFO L137 encePairwiseOnDemand]: 382/396 looper letters, 177 selfloop transitions, 32 changer transitions 0/216 dead transitions. [2023-08-30 14:09:40,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 216 transitions, 1229 flow [2023-08-30 14:09:40,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:09:40,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:09:40,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1049 transitions. [2023-08-30 14:09:40,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4414983164983165 [2023-08-30 14:09:40,581 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1049 transitions. [2023-08-30 14:09:40,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1049 transitions. [2023-08-30 14:09:40,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:09:40,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1049 transitions. [2023-08-30 14:09:40,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 174.83333333333334) internal successors, (1049), 6 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:40,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 396.0) internal successors, (2772), 7 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:40,588 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 396.0) internal successors, (2772), 7 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:40,588 INFO L175 Difference]: Start difference. First operand has 87 places, 92 transitions, 368 flow. Second operand 6 states and 1049 transitions. [2023-08-30 14:09:40,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 216 transitions, 1229 flow [2023-08-30 14:09:40,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 216 transitions, 1215 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:09:40,828 INFO L231 Difference]: Finished difference. Result has 95 places, 111 transitions, 628 flow [2023-08-30 14:09:40,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=628, PETRI_PLACES=95, PETRI_TRANSITIONS=111} [2023-08-30 14:09:40,829 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 22 predicate places. [2023-08-30 14:09:40,829 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 111 transitions, 628 flow [2023-08-30 14:09:40,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 147.1818181818182) internal successors, (1619), 11 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:40,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:09:40,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:09:40,835 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 14:09:41,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:09:41,035 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:09:41,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:09:41,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1766451774, now seen corresponding path program 1 times [2023-08-30 14:09:41,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:09:41,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990379994] [2023-08-30 14:09:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:09:41,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:09:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:09:41,202 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 14:09:41,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:09:41,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990379994] [2023-08-30 14:09:41,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990379994] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:09:41,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:09:41,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 14:09:41,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916948197] [2023-08-30 14:09:41,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:09:41,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:09:41,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:09:41,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:09:41,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:09:41,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 396 [2023-08-30 14:09:41,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 111 transitions, 628 flow. Second operand has 7 states, 7 states have (on average 170.28571428571428) internal successors, (1192), 7 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:41,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:09:41,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 396 [2023-08-30 14:09:41,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:06,630 INFO L130 PetriNetUnfolder]: 252726/362062 cut-off events. [2023-08-30 14:10:06,631 INFO L131 PetriNetUnfolder]: For 427648/427902 co-relation queries the response was YES. [2023-08-30 14:10:07,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003271 conditions, 362062 events. 252726/362062 cut-off events. For 427648/427902 co-relation queries the response was YES. Maximal size of possible extension queue 8713. Compared 2961169 event pairs, 40660 based on Foata normal form. 3908/308208 useless extension candidates. Maximal degree in co-relation 1003246. Up to 159692 conditions per place. [2023-08-30 14:10:09,635 INFO L137 encePairwiseOnDemand]: 380/396 looper letters, 469 selfloop transitions, 105 changer transitions 0/582 dead transitions. [2023-08-30 14:10:09,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 582 transitions, 3379 flow [2023-08-30 14:10:09,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 14:10:09,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 14:10:09,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3066 transitions. [2023-08-30 14:10:09,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161616161616162 [2023-08-30 14:10:09,652 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3066 transitions. [2023-08-30 14:10:09,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3066 transitions. [2023-08-30 14:10:09,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:09,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3066 transitions. [2023-08-30 14:10:09,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 204.4) internal successors, (3066), 15 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:09,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 396.0) internal successors, (6336), 16 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:09,693 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 396.0) internal successors, (6336), 16 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:09,708 INFO L175 Difference]: Start difference. First operand has 95 places, 111 transitions, 628 flow. Second operand 15 states and 3066 transitions. [2023-08-30 14:10:09,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 582 transitions, 3379 flow [2023-08-30 14:10:12,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 582 transitions, 3379 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:10:12,986 INFO L231 Difference]: Finished difference. Result has 117 places, 182 transitions, 1537 flow [2023-08-30 14:10:12,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1537, PETRI_PLACES=117, PETRI_TRANSITIONS=182} [2023-08-30 14:10:12,988 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 44 predicate places. [2023-08-30 14:10:12,988 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 182 transitions, 1537 flow [2023-08-30 14:10:12,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.28571428571428) internal successors, (1192), 7 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:12,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:12,989 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:10:12,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:10:12,989 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:10:12,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:12,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1386874085, now seen corresponding path program 1 times [2023-08-30 14:10:12,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:12,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245553687] [2023-08-30 14:10:12,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:12,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:10:13,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:13,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245553687] [2023-08-30 14:10:13,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245553687] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:10:13,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161176319] [2023-08-30 14:10:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:13,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:10:13,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:10:13,133 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 14:10:13,185 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 14:10:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:13,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 14:10:13,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:10:13,287 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:10:13,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:10:13,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:10:13,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:10:13,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:10:13,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:10:13,552 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_150 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_150) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483647)) is different from false [2023-08-30 14:10:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-30 14:10:13,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161176319] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:10:13,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:10:13,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-30 14:10:13,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679027256] [2023-08-30 14:10:13,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:10:13,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 14:10:13,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:13,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 14:10:13,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=66, Unknown=1, NotChecked=16, Total=110 [2023-08-30 14:10:13,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 396 [2023-08-30 14:10:13,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 182 transitions, 1537 flow. Second operand has 11 states, 11 states have (on average 147.45454545454547) internal successors, (1622), 11 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:13,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:13,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 396 [2023-08-30 14:10:13,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:50,579 INFO L130 PetriNetUnfolder]: 297286/429055 cut-off events. [2023-08-30 14:10:50,579 INFO L131 PetriNetUnfolder]: For 1154122/1154122 co-relation queries the response was YES. [2023-08-30 14:10:52,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1377066 conditions, 429055 events. 297286/429055 cut-off events. For 1154122/1154122 co-relation queries the response was YES. Maximal size of possible extension queue 10711. Compared 3659813 event pairs, 69750 based on Foata normal form. 0/367935 useless extension candidates. Maximal degree in co-relation 1377031. Up to 245829 conditions per place. [2023-08-30 14:10:54,374 INFO L137 encePairwiseOnDemand]: 379/396 looper letters, 325 selfloop transitions, 178 changer transitions 0/510 dead transitions. [2023-08-30 14:10:54,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 510 transitions, 4661 flow [2023-08-30 14:10:54,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 14:10:54,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 14:10:54,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1903 transitions. [2023-08-30 14:10:54,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2023-08-30 14:10:54,379 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1903 transitions. [2023-08-30 14:10:54,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1903 transitions. [2023-08-30 14:10:54,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:54,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1903 transitions. [2023-08-30 14:10:54,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 173.0) internal successors, (1903), 11 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:54,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 396.0) internal successors, (4752), 12 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:54,389 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 396.0) internal successors, (4752), 12 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:54,390 INFO L175 Difference]: Start difference. First operand has 117 places, 182 transitions, 1537 flow. Second operand 11 states and 1903 transitions. [2023-08-30 14:10:54,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 510 transitions, 4661 flow [2023-08-30 14:13:01,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 510 transitions, 4507 flow, removed 32 selfloop flow, removed 3 redundant places. [2023-08-30 14:13:01,595 INFO L231 Difference]: Finished difference. Result has 129 places, 289 transitions, 3053 flow [2023-08-30 14:13:01,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3053, PETRI_PLACES=129, PETRI_TRANSITIONS=289} [2023-08-30 14:13:01,596 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 56 predicate places. [2023-08-30 14:13:01,596 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 289 transitions, 3053 flow [2023-08-30 14:13:01,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 147.45454545454547) internal successors, (1622), 11 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:01,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:13:01,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:13:01,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 14:13:01,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 14:13:01,808 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:13:01,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:13:01,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1766451744, now seen corresponding path program 1 times [2023-08-30 14:13:01,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:13:01,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249057854] [2023-08-30 14:13:01,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:13:01,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:13:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:13:01,870 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 14:13:01,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:13:01,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249057854] [2023-08-30 14:13:01,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249057854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:13:01,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:13:01,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:13:01,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132523394] [2023-08-30 14:13:01,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:13:01,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:13:01,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:13:01,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:13:01,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:13:01,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 396 [2023-08-30 14:13:01,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 289 transitions, 3053 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:01,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:13:01,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 396 [2023-08-30 14:13:01,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:13:56,250 INFO L130 PetriNetUnfolder]: 328354/475477 cut-off events. [2023-08-30 14:13:56,250 INFO L131 PetriNetUnfolder]: For 1673000/1673262 co-relation queries the response was YES. [2023-08-30 14:13:59,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1629708 conditions, 475477 events. 328354/475477 cut-off events. For 1673000/1673262 co-relation queries the response was YES. Maximal size of possible extension queue 12247. Compared 4121008 event pairs, 187369 based on Foata normal form. 8661/442450 useless extension candidates. Maximal degree in co-relation 1629667. Up to 332328 conditions per place. [2023-08-30 14:14:01,464 INFO L137 encePairwiseOnDemand]: 389/396 looper letters, 321 selfloop transitions, 69 changer transitions 0/398 dead transitions. [2023-08-30 14:14:01,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 398 transitions, 4741 flow [2023-08-30 14:14:01,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:14:01,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:14:01,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-08-30 14:14:01,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5395622895622896 [2023-08-30 14:14:01,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-08-30 14:14:01,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-08-30 14:14:01,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:01,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-08-30 14:14:01,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:01,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:01,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:01,470 INFO L175 Difference]: Start difference. First operand has 129 places, 289 transitions, 3053 flow. Second operand 3 states and 641 transitions. [2023-08-30 14:14:01,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 398 transitions, 4741 flow [2023-08-30 14:16:37,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 398 transitions, 4547 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 14:16:37,639 INFO L231 Difference]: Finished difference. Result has 131 places, 308 transitions, 3470 flow [2023-08-30 14:16:37,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=2900, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3470, PETRI_PLACES=131, PETRI_TRANSITIONS=308} [2023-08-30 14:16:37,640 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 58 predicate places. [2023-08-30 14:16:37,640 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 308 transitions, 3470 flow [2023-08-30 14:16:37,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:37,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:37,640 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:16:37,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:16:37,641 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:16:37,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:37,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1591805127, now seen corresponding path program 1 times [2023-08-30 14:16:37,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:37,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588620093] [2023-08-30 14:16:37,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:37,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:37,776 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 14:16:37,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:37,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588620093] [2023-08-30 14:16:37,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588620093] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:16:37,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792949535] [2023-08-30 14:16:37,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:37,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:16:37,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:16:37,783 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 14:16:37,784 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 14:16:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:37,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 14:16:37,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:16:37,872 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:16:37,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:16:37,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:16:37,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 14:16:38,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:16:38,033 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 14:16:38,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:16:38,050 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_200 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_200) c_t_funThread1of3ForFork0_~p~0.base) c_t_funThread1of3ForFork0_~p~0.offset) 2147483648))) is different from false [2023-08-30 14:16:38,067 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_198 Int) (v_ArrVal_200 (Array Int Int))) (or (< v_ArrVal_198 (+ |c_t_funThread1of3ForFork0_#t~post6| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| c_t_funThread1of3ForFork0_~p~0.base (store (select |c_#memory_int| c_t_funThread1of3ForFork0_~p~0.base) c_t_funThread1of3ForFork0_~p~0.offset v_ArrVal_198)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_200) c_t_funThread1of3ForFork0_~p~0.base) c_t_funThread1of3ForFork0_~p~0.offset) 2147483648)))) is different from false [2023-08-30 14:16:38,079 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_198 Int) (v_ArrVal_200 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| c_t_funThread1of3ForFork0_~p~0.base))) (or (< v_ArrVal_198 (+ (select .cse0 c_t_funThread1of3ForFork0_~p~0.offset) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| c_t_funThread1of3ForFork0_~p~0.base (store .cse0 c_t_funThread1of3ForFork0_~p~0.offset v_ArrVal_198)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_200) c_t_funThread1of3ForFork0_~p~0.base) c_t_funThread1of3ForFork0_~p~0.offset) 2147483648))))) is different from false [2023-08-30 14:16:38,118 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_198 Int) (v_ArrVal_200 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#global~0.base|))) (or (< v_ArrVal_198 (+ (select .cse0 |c_~#global~0.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#global~0.base| (store .cse0 |c_~#global~0.offset| v_ArrVal_198)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_200) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483648))))) is different from false [2023-08-30 14:16:38,158 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_198 Int) (v_ArrVal_197 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_197))) (let ((.cse1 (select .cse0 |c_~#global~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#global~0.base| (store .cse1 |c_~#global~0.offset| v_ArrVal_198)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_200) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483648)) (< v_ArrVal_198 (+ (select .cse1 |c_~#global~0.offset|) 1)))))) is different from false [2023-08-30 14:16:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 14:16:38,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792949535] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:16:38,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:16:38,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 16 [2023-08-30 14:16:38,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265396788] [2023-08-30 14:16:38,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:16:38,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 14:16:38,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:38,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 14:16:38,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=124, Unknown=5, NotChecked=130, Total=306 [2023-08-30 14:16:38,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 396 [2023-08-30 14:16:38,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 308 transitions, 3470 flow. Second operand has 18 states, 18 states have (on average 140.83333333333334) internal successors, (2535), 18 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:38,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:38,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 396 [2023-08-30 14:16:38,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:49,048 INFO L130 PetriNetUnfolder]: 417134/604910 cut-off events. [2023-08-30 14:17:49,048 INFO L131 PetriNetUnfolder]: For 2392082/2392082 co-relation queries the response was YES. [2023-08-30 14:17:52,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2170861 conditions, 604910 events. 417134/604910 cut-off events. For 2392082/2392082 co-relation queries the response was YES. Maximal size of possible extension queue 15413. Compared 5312365 event pairs, 139902 based on Foata normal form. 5875/551247 useless extension candidates. Maximal degree in co-relation 2170820. Up to 372301 conditions per place. [2023-08-30 14:17:55,660 INFO L137 encePairwiseOnDemand]: 379/396 looper letters, 615 selfloop transitions, 340 changer transitions 0/962 dead transitions. [2023-08-30 14:17:55,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 962 transitions, 10623 flow [2023-08-30 14:17:55,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 14:17:55,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 14:17:55,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2232 transitions. [2023-08-30 14:17:55,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43356643356643354 [2023-08-30 14:17:55,665 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2232 transitions. [2023-08-30 14:17:55,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2232 transitions. [2023-08-30 14:17:55,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:55,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2232 transitions. [2023-08-30 14:17:55,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 171.69230769230768) internal successors, (2232), 13 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:55,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 396.0) internal successors, (5544), 14 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:55,675 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 396.0) internal successors, (5544), 14 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:55,675 INFO L175 Difference]: Start difference. First operand has 131 places, 308 transitions, 3470 flow. Second operand 13 states and 2232 transitions. [2023-08-30 14:17:55,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 962 transitions, 10623 flow Killed by 15