./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_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_77-tricky_address4_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 dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe --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 14:21:24,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:21:24,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:21:24,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:21:24,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:21:24,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:21:24,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:21:24,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:21:24,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:21:24,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:21:24,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:21:24,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:21:24,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:21:24,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:21:24,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:21:24,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:21:24,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:21:24,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:21:24,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:21:24,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:21:24,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:21:24,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:21:24,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:21:24,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:21:24,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:21:24,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:21:24,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:21:24,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:21:24,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:21:24,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:21:24,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:21:24,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:21:24,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:21:24,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:21:24,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:21:24,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:21:24,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:21:24,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:21:24,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:21:24,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:21:24,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:21:24,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:21:24,960 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:21:24,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:21:24,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:21:24,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:21:24,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:21:24,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:21:24,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:21:24,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:21:24,964 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:21:24,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:21:24,965 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:21:24,965 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:21:24,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:21:24,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:21:24,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:21:24,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:21:24,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:21:24,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:21:24,966 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:21:24,966 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:21:24,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:21:24,967 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:21:24,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:21:24,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:21:24,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:21:24,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:21:24,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:21:24,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:21:24,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:21:24,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:21:24,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:21:24,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:21:24,969 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:21:24,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:21:24,970 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:21:24,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:21:24,970 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:21:24,970 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:21:25,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:21:25,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:21:25,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:21:25,281 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:21:25,284 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:21:25,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2023-08-30 14:21:26,409 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:21:26,735 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:21:26,736 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2023-08-30 14:21:26,752 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b1f11a8e/3cbbe79cdacc46c48e5d0a00c54b1637/FLAGd57d07b07 [2023-08-30 14:21:26,763 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b1f11a8e/3cbbe79cdacc46c48e5d0a00c54b1637 [2023-08-30 14:21:26,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:21:26,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:21:26,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:21:26,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:21:26,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:21:26,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:21:26" (1/1) ... [2023-08-30 14:21:26,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab5a0b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:26, skipping insertion in model container [2023-08-30 14:21:26,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:21:26" (1/1) ... [2023-08-30 14:21:26,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:21:26,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:21:27,300 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_77-tricky_address4_racing.i[41323,41336] [2023-08-30 14:21:27,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:21:27,362 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:21:27,421 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_77-tricky_address4_racing.i[41323,41336] [2023-08-30 14:21:27,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:21:27,525 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:21:27,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:27 WrapperNode [2023-08-30 14:21:27,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:21:27,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:21:27,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:21:27,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:21:27,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:27" (1/1) ... [2023-08-30 14:21:27,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:27" (1/1) ... [2023-08-30 14:21:27,580 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 209 [2023-08-30 14:21:27,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:21:27,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:21:27,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:21:27,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:21:27,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:27" (1/1) ... [2023-08-30 14:21:27,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:27" (1/1) ... [2023-08-30 14:21:27,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:27" (1/1) ... [2023-08-30 14:21:27,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:27" (1/1) ... [2023-08-30 14:21:27,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:27" (1/1) ... [2023-08-30 14:21:27,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:27" (1/1) ... [2023-08-30 14:21:27,623 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:27" (1/1) ... [2023-08-30 14:21:27,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:27" (1/1) ... [2023-08-30 14:21:27,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:21:27,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:21:27,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:21:27,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:21:27,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:27" (1/1) ... [2023-08-30 14:21:27,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:21:27,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:27,670 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 14:21:27,682 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 14:21:27,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:21:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:21:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:21:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:21:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:21:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:21:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:21:27,709 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:21:27,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:21:27,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:21:27,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:21:27,710 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 14:21:27,920 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:21:27,922 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:21:28,264 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:21:28,271 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:21:28,271 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-30 14:21:28,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:21:28 BoogieIcfgContainer [2023-08-30 14:21:28,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:21:28,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:21:28,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:21:28,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:21:28,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:21:26" (1/3) ... [2023-08-30 14:21:28,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d10d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:21:28, skipping insertion in model container [2023-08-30 14:21:28,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:27" (2/3) ... [2023-08-30 14:21:28,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d10d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:21:28, skipping insertion in model container [2023-08-30 14:21:28,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:21:28" (3/3) ... [2023-08-30 14:21:28,284 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2023-08-30 14:21:28,291 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:21:28,300 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:21:28,301 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 14:21:28,301 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:21:28,383 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:21:28,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 223 transitions, 454 flow [2023-08-30 14:21:28,497 INFO L130 PetriNetUnfolder]: 45/300 cut-off events. [2023-08-30 14:21:28,497 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 14:21:28,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 300 events. 45/300 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 961 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2023-08-30 14:21:28,514 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 223 transitions, 454 flow [2023-08-30 14:21:28,520 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 220 transitions, 448 flow [2023-08-30 14:21:28,523 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:21:28,531 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 220 transitions, 448 flow [2023-08-30 14:21:28,533 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 220 transitions, 448 flow [2023-08-30 14:21:28,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 220 transitions, 448 flow [2023-08-30 14:21:28,584 INFO L130 PetriNetUnfolder]: 44/297 cut-off events. [2023-08-30 14:21:28,584 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 14:21:28,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 297 events. 44/297 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 962 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2023-08-30 14:21:28,594 INFO L119 LiptonReduction]: Number of co-enabled transitions 14268 [2023-08-30 14:21:32,307 INFO L134 LiptonReduction]: Checked pairs total: 24711 [2023-08-30 14:21:32,307 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-08-30 14:21:32,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:21:32,327 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;@ffbc610, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:21:32,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-30 14:21:32,331 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:21:32,331 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:21:32,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:32,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:21:32,332 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:32,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:32,336 INFO L85 PathProgramCache]: Analyzing trace with hash 28157, now seen corresponding path program 1 times [2023-08-30 14:21:32,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:32,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139257780] [2023-08-30 14:21:32,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:32,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:32,531 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 14:21:32,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:32,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139257780] [2023-08-30 14:21:32,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139257780] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:32,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:32,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:21:32,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030162141] [2023-08-30 14:21:32,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:32,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:32,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:32,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:32,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:32,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 423 [2023-08-30 14:21:32,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 81 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:32,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:32,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 423 [2023-08-30 14:21:32,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:32,750 INFO L130 PetriNetUnfolder]: 501/1044 cut-off events. [2023-08-30 14:21:32,750 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:21:32,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2034 conditions, 1044 events. 501/1044 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5673 event pairs, 456 based on Foata normal form. 112/838 useless extension candidates. Maximal degree in co-relation 1967. Up to 983 conditions per place. [2023-08-30 14:21:32,757 INFO L137 encePairwiseOnDemand]: 397/423 looper letters, 49 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 14:21:32,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 220 flow [2023-08-30 14:21:32,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:32,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:32,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 639 transitions. [2023-08-30 14:21:32,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2023-08-30 14:21:32,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 639 transitions. [2023-08-30 14:21:32,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 639 transitions. [2023-08-30 14:21:32,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:32,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 639 transitions. [2023-08-30 14:21:32,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:32,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:32,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:32,788 INFO L175 Difference]: Start difference. First operand has 60 places, 81 transitions, 170 flow. Second operand 3 states and 639 transitions. [2023-08-30 14:21:32,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 220 flow [2023-08-30 14:21:32,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:21:32,793 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 122 flow [2023-08-30 14:21:32,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-08-30 14:21:32,799 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2023-08-30 14:21:32,800 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 122 flow [2023-08-30 14:21:32,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:32,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:32,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:21:32,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:21:32,801 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:32,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:32,802 INFO L85 PathProgramCache]: Analyzing trace with hash 841224676, now seen corresponding path program 1 times [2023-08-30 14:21:32,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:32,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531889732] [2023-08-30 14:21:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:32,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:32,868 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 14:21:32,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:32,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531889732] [2023-08-30 14:21:32,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531889732] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:32,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:32,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:21:32,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678212608] [2023-08-30 14:21:32,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:32,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:32,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:32,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:32,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:32,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 423 [2023-08-30 14:21:32,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:32,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:32,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 423 [2023-08-30 14:21:32,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:33,039 INFO L130 PetriNetUnfolder]: 501/1045 cut-off events. [2023-08-30 14:21:33,040 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:21:33,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2038 conditions, 1045 events. 501/1045 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5670 event pairs, 456 based on Foata normal form. 0/727 useless extension candidates. Maximal degree in co-relation 2031. Up to 984 conditions per place. [2023-08-30 14:21:33,045 INFO L137 encePairwiseOnDemand]: 420/423 looper letters, 49 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-30 14:21:33,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 226 flow [2023-08-30 14:21:33,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:33,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 616 transitions. [2023-08-30 14:21:33,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4854215918045705 [2023-08-30 14:21:33,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 616 transitions. [2023-08-30 14:21:33,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 616 transitions. [2023-08-30 14:21:33,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:33,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 616 transitions. [2023-08-30 14:21:33,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:33,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:33,053 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:33,053 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 122 flow. Second operand 3 states and 616 transitions. [2023-08-30 14:21:33,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 226 flow [2023-08-30 14:21:33,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 57 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:33,055 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 133 flow [2023-08-30 14:21:33,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-08-30 14:21:33,056 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2023-08-30 14:21:33,057 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 133 flow [2023-08-30 14:21:33,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:33,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:33,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:21:33,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:21:33,058 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:33,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:33,058 INFO L85 PathProgramCache]: Analyzing trace with hash 297397015, now seen corresponding path program 1 times [2023-08-30 14:21:33,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:33,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582265742] [2023-08-30 14:21:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:33,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:33,115 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 14:21:33,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:33,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582265742] [2023-08-30 14:21:33,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582265742] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:33,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035037862] [2023-08-30 14:21:33,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:33,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:33,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:33,129 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 14:21:33,163 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 14:21:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:33,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:21:33,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:33,272 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 14:21:33,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:21:33,286 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 14:21:33,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035037862] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:21:33,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:21:33,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 14:21:33,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013044350] [2023-08-30 14:21:33,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:21:33,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:21:33,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:33,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:21:33,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:21:33,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 423 [2023-08-30 14:21:33,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 133 flow. Second operand has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:33,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:33,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 423 [2023-08-30 14:21:33,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:33,567 INFO L130 PetriNetUnfolder]: 501/1048 cut-off events. [2023-08-30 14:21:33,567 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:21:33,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 1048 events. 501/1048 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5664 event pairs, 456 based on Foata normal form. 0/730 useless extension candidates. Maximal degree in co-relation 2044. Up to 984 conditions per place. [2023-08-30 14:21:33,574 INFO L137 encePairwiseOnDemand]: 420/423 looper letters, 49 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-08-30 14:21:33,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 253 flow [2023-08-30 14:21:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:21:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:21:33,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1179 transitions. [2023-08-30 14:21:33,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2023-08-30 14:21:33,578 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1179 transitions. [2023-08-30 14:21:33,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1179 transitions. [2023-08-30 14:21:33,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:33,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1179 transitions. [2023-08-30 14:21:33,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.5) internal successors, (1179), 6 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:33,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:33,587 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:33,587 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 133 flow. Second operand 6 states and 1179 transitions. [2023-08-30 14:21:33,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 253 flow [2023-08-30 14:21:33,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 249 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:33,592 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 165 flow [2023-08-30 14:21:33,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=165, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-08-30 14:21:33,594 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 7 predicate places. [2023-08-30 14:21:33,594 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 165 flow [2023-08-30 14:21:33,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:33,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:33,596 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 14:21:33,616 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 14:21:33,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:33,802 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:33,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:33,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1433028260, now seen corresponding path program 2 times [2023-08-30 14:21:33,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:33,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169935362] [2023-08-30 14:21:33,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:33,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:33,905 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:21:33,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:33,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169935362] [2023-08-30 14:21:33,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169935362] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:33,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:33,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:21:33,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674795222] [2023-08-30 14:21:33,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:33,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:33,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:33,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:33,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:33,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 423 [2023-08-30 14:21:33,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:33,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:33,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 423 [2023-08-30 14:21:33,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:34,113 INFO L130 PetriNetUnfolder]: 461/956 cut-off events. [2023-08-30 14:21:34,113 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:21:34,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1883 conditions, 956 events. 461/956 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5089 event pairs, 252 based on Foata normal form. 0/699 useless extension candidates. Maximal degree in co-relation 1870. Up to 868 conditions per place. [2023-08-30 14:21:34,118 INFO L137 encePairwiseOnDemand]: 418/423 looper letters, 70 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-08-30 14:21:34,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 345 flow [2023-08-30 14:21:34,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:34,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:34,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 635 transitions. [2023-08-30 14:21:34,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5003940110323088 [2023-08-30 14:21:34,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 635 transitions. [2023-08-30 14:21:34,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 635 transitions. [2023-08-30 14:21:34,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:34,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 635 transitions. [2023-08-30 14:21:34,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:34,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:34,126 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:34,126 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 165 flow. Second operand 3 states and 635 transitions. [2023-08-30 14:21:34,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 345 flow [2023-08-30 14:21:34,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 331 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:34,129 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 155 flow [2023-08-30 14:21:34,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2023-08-30 14:21:34,129 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 7 predicate places. [2023-08-30 14:21:34,130 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 155 flow [2023-08-30 14:21:34,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:34,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:34,131 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-30 14:21:34,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:21:34,131 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:34,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:34,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1544283117, now seen corresponding path program 1 times [2023-08-30 14:21:34,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:34,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565908126] [2023-08-30 14:21:34,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:34,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:34,209 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:21:34,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:34,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565908126] [2023-08-30 14:21:34,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565908126] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:34,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811583842] [2023-08-30 14:21:34,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:34,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:34,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:34,212 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 14:21:34,246 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 14:21:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:34,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:21:34,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:21:34,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:21:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:21:34,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811583842] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:21:34,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:21:34,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-30 14:21:34,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114591936] [2023-08-30 14:21:34,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:21:34,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 14:21:34,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:34,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 14:21:34,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 14:21:34,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 423 [2023-08-30 14:21:34,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 155 flow. Second operand has 12 states, 12 states have (on average 188.25) internal successors, (2259), 12 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:34,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:34,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 423 [2023-08-30 14:21:34,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:34,641 INFO L130 PetriNetUnfolder]: 461/952 cut-off events. [2023-08-30 14:21:34,641 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2023-08-30 14:21:34,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 952 events. 461/952 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4922 event pairs, 418 based on Foata normal form. 6/715 useless extension candidates. Maximal degree in co-relation 1932. Up to 886 conditions per place. [2023-08-30 14:21:34,647 INFO L137 encePairwiseOnDemand]: 420/423 looper letters, 47 selfloop transitions, 11 changer transitions 0/64 dead transitions. [2023-08-30 14:21:34,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 307 flow [2023-08-30 14:21:34,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:21:34,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:21:34,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2308 transitions. [2023-08-30 14:21:34,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45468873128447596 [2023-08-30 14:21:34,653 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2308 transitions. [2023-08-30 14:21:34,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2308 transitions. [2023-08-30 14:21:34,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:34,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2308 transitions. [2023-08-30 14:21:34,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 192.33333333333334) internal successors, (2308), 12 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:34,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 423.0) internal successors, (5499), 13 states have internal predecessors, (5499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:34,669 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 423.0) internal successors, (5499), 13 states have internal predecessors, (5499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:34,669 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 155 flow. Second operand 12 states and 2308 transitions. [2023-08-30 14:21:34,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 307 flow [2023-08-30 14:21:34,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 64 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:21:34,672 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 235 flow [2023-08-30 14:21:34,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=235, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2023-08-30 14:21:34,673 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 22 predicate places. [2023-08-30 14:21:34,673 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 235 flow [2023-08-30 14:21:34,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 188.25) internal successors, (2259), 12 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:34,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:34,675 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-30 14:21:34,688 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 14:21:34,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:34,881 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:34,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:34,881 INFO L85 PathProgramCache]: Analyzing trace with hash -122261709, now seen corresponding path program 2 times [2023-08-30 14:21:34,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:34,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005898349] [2023-08-30 14:21:34,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:34,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:21:34,918 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:21:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:21:34,952 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:21:34,952 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:21:34,953 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-08-30 14:21:34,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-08-30 14:21:34,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-08-30 14:21:34,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-08-30 14:21:34,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-08-30 14:21:34,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-08-30 14:21:34,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-08-30 14:21:34,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-08-30 14:21:34,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-08-30 14:21:34,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-08-30 14:21:34,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-08-30 14:21:34,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-08-30 14:21:34,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-08-30 14:21:34,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-08-30 14:21:34,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2023-08-30 14:21:34,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2023-08-30 14:21:34,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2023-08-30 14:21:34,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-08-30 14:21:34,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-08-30 14:21:34,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-08-30 14:21:34,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-08-30 14:21:34,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-08-30 14:21:34,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-08-30 14:21:34,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:21:34,960 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-08-30 14:21:34,962 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:21:34,962 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:21:34,996 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:21:35,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 307 transitions, 632 flow [2023-08-30 14:21:35,060 INFO L130 PetriNetUnfolder]: 75/497 cut-off events. [2023-08-30 14:21:35,061 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2023-08-30 14:21:35,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 497 events. 75/497 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2021 event pairs, 0 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 302. Up to 12 conditions per place. [2023-08-30 14:21:35,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 307 transitions, 632 flow [2023-08-30 14:21:35,068 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 307 transitions, 632 flow [2023-08-30 14:21:35,068 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:21:35,069 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 307 transitions, 632 flow [2023-08-30 14:21:35,069 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 307 transitions, 632 flow [2023-08-30 14:21:35,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 307 transitions, 632 flow [2023-08-30 14:21:35,115 INFO L130 PetriNetUnfolder]: 75/497 cut-off events. [2023-08-30 14:21:35,115 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2023-08-30 14:21:35,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 497 events. 75/497 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2021 event pairs, 0 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 302. Up to 12 conditions per place. [2023-08-30 14:21:35,140 INFO L119 LiptonReduction]: Number of co-enabled transitions 45100 [2023-08-30 14:21:39,393 INFO L134 LiptonReduction]: Checked pairs total: 79751 [2023-08-30 14:21:39,393 INFO L136 LiptonReduction]: Total number of compositions: 272 [2023-08-30 14:21:39,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:21:39,396 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;@ffbc610, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:21:39,396 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-30 14:21:39,397 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:21:39,398 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:21:39,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:39,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:21:39,398 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:39,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:39,399 INFO L85 PathProgramCache]: Analyzing trace with hash 49101, now seen corresponding path program 1 times [2023-08-30 14:21:39,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:39,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24873595] [2023-08-30 14:21:39,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:39,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:39,424 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 14:21:39,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:39,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24873595] [2023-08-30 14:21:39,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24873595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:39,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:39,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:21:39,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195962871] [2023-08-30 14:21:39,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:39,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:39,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:39,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:39,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:39,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 579 [2023-08-30 14:21:39,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 119 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:39,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:39,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 579 [2023-08-30 14:21:39,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:41,773 INFO L130 PetriNetUnfolder]: 19341/29804 cut-off events. [2023-08-30 14:21:41,774 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2023-08-30 14:21:41,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58386 conditions, 29804 events. 19341/29804 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 211496 event pairs, 18264 based on Foata normal form. 3745/24741 useless extension candidates. Maximal degree in co-relation 34945. Up to 28466 conditions per place. [2023-08-30 14:21:41,956 INFO L137 encePairwiseOnDemand]: 539/579 looper letters, 71 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-30 14:21:41,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 332 flow [2023-08-30 14:21:41,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:41,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 883 transitions. [2023-08-30 14:21:41,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083477259643063 [2023-08-30 14:21:41,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 883 transitions. [2023-08-30 14:21:41,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 883 transitions. [2023-08-30 14:21:41,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:41,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 883 transitions. [2023-08-30 14:21:41,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:41,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:41,966 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:41,967 INFO L175 Difference]: Start difference. First operand has 87 places, 119 transitions, 256 flow. Second operand 3 states and 883 transitions. [2023-08-30 14:21:41,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 332 flow [2023-08-30 14:21:41,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 332 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:21:41,970 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 198 flow [2023-08-30 14:21:41,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2023-08-30 14:21:41,972 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -2 predicate places. [2023-08-30 14:21:41,972 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 198 flow [2023-08-30 14:21:41,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:41,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:41,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:21:41,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:21:41,974 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:41,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:41,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1524794, now seen corresponding path program 1 times [2023-08-30 14:21:41,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:41,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870526285] [2023-08-30 14:21:41,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:41,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:42,016 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 14:21:42,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:42,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870526285] [2023-08-30 14:21:42,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870526285] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:42,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498923311] [2023-08-30 14:21:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:42,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:42,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:42,021 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 14:21:42,044 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 14:21:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:42,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:21:42,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:42,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:42,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:21:42,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498923311] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:42,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:21:42,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:21:42,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076172082] [2023-08-30 14:21:42,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:42,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:21:42,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:42,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:21:42,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:21:42,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 579 [2023-08-30 14:21:42,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 257.75) internal successors, (1031), 4 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:42,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:42,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 579 [2023-08-30 14:21:42,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:44,350 INFO L130 PetriNetUnfolder]: 19341/29803 cut-off events. [2023-08-30 14:21:44,350 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2023-08-30 14:21:44,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58391 conditions, 29803 events. 19341/29803 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 211420 event pairs, 18264 based on Foata normal form. 0/20996 useless extension candidates. Maximal degree in co-relation 58378. Up to 28464 conditions per place. [2023-08-30 14:21:44,481 INFO L137 encePairwiseOnDemand]: 576/579 looper letters, 70 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-30 14:21:44,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 338 flow [2023-08-30 14:21:44,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:21:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:21:44,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1101 transitions. [2023-08-30 14:21:44,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47538860103626945 [2023-08-30 14:21:44,486 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1101 transitions. [2023-08-30 14:21:44,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1101 transitions. [2023-08-30 14:21:44,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:44,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1101 transitions. [2023-08-30 14:21:44,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 275.25) internal successors, (1101), 4 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:44,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 579.0) internal successors, (2895), 5 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:44,492 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 579.0) internal successors, (2895), 5 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:44,492 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 198 flow. Second operand 4 states and 1101 transitions. [2023-08-30 14:21:44,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 338 flow [2023-08-30 14:21:44,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 334 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:44,497 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 194 flow [2023-08-30 14:21:44,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2023-08-30 14:21:44,499 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -1 predicate places. [2023-08-30 14:21:44,499 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 194 flow [2023-08-30 14:21:44,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 257.75) internal successors, (1031), 4 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:44,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:44,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:44,508 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 14:21:44,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:44,705 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:44,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:44,706 INFO L85 PathProgramCache]: Analyzing trace with hash -482046086, now seen corresponding path program 1 times [2023-08-30 14:21:44,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:44,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354609550] [2023-08-30 14:21:44,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:44,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:44,763 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 14:21:44,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:44,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354609550] [2023-08-30 14:21:44,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354609550] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:44,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193849547] [2023-08-30 14:21:44,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:44,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:44,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:44,769 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 14:21:44,771 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 14:21:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:44,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:21:44,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:44,850 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 14:21:44,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:21:44,866 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 14:21:44,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193849547] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:21:44,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:21:44,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:21:44,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849903924] [2023-08-30 14:21:44,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:21:44,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:21:44,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:44,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:21:44,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:21:44,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 579 [2023-08-30 14:21:44,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 257.57142857142856) internal successors, (1803), 7 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:44,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:44,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 579 [2023-08-30 14:21:44,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:46,497 INFO L130 PetriNetUnfolder]: 19341/29806 cut-off events. [2023-08-30 14:21:46,497 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2023-08-30 14:21:46,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58400 conditions, 29806 events. 19341/29806 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 211421 event pairs, 18264 based on Foata normal form. 0/20999 useless extension candidates. Maximal degree in co-relation 58387. Up to 28465 conditions per place. [2023-08-30 14:21:46,601 INFO L137 encePairwiseOnDemand]: 576/579 looper letters, 70 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2023-08-30 14:21:46,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 356 flow [2023-08-30 14:21:46,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:21:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:21:46,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1614 transitions. [2023-08-30 14:21:46,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46459412780656306 [2023-08-30 14:21:46,607 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1614 transitions. [2023-08-30 14:21:46,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1614 transitions. [2023-08-30 14:21:46,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:46,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1614 transitions. [2023-08-30 14:21:46,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:46,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 579.0) internal successors, (4053), 7 states have internal predecessors, (4053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:46,618 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 579.0) internal successors, (4053), 7 states have internal predecessors, (4053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:46,619 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 194 flow. Second operand 6 states and 1614 transitions. [2023-08-30 14:21:46,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 356 flow [2023-08-30 14:21:46,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 353 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:21:46,625 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 227 flow [2023-08-30 14:21:46,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2023-08-30 14:21:46,627 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2023-08-30 14:21:46,628 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 227 flow [2023-08-30 14:21:46,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 257.57142857142856) internal successors, (1803), 7 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:46,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:46,629 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:46,635 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 14:21:46,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:46,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:46,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:46,831 INFO L85 PathProgramCache]: Analyzing trace with hash -484147, now seen corresponding path program 2 times [2023-08-30 14:21:46,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:46,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393653613] [2023-08-30 14:21:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:46,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:21:46,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:46,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393653613] [2023-08-30 14:21:46,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393653613] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:46,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:46,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:21:46,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148894104] [2023-08-30 14:21:46,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:46,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:46,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:46,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:46,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:46,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 579 [2023-08-30 14:21:46,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:46,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:46,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 579 [2023-08-30 14:21:46,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:48,605 INFO L130 PetriNetUnfolder]: 19086/29598 cut-off events. [2023-08-30 14:21:48,606 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2023-08-30 14:21:48,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58140 conditions, 29598 events. 19086/29598 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 1079. Compared 213633 event pairs, 8778 based on Foata normal form. 0/20833 useless extension candidates. Maximal degree in co-relation 58123. Up to 28356 conditions per place. [2023-08-30 14:21:48,749 INFO L137 encePairwiseOnDemand]: 574/579 looper letters, 93 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-30 14:21:48,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 106 transitions, 457 flow [2023-08-30 14:21:48,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:48,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:48,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 865 transitions. [2023-08-30 14:21:48,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49798503166378816 [2023-08-30 14:21:48,753 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 865 transitions. [2023-08-30 14:21:48,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 865 transitions. [2023-08-30 14:21:48,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:48,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 865 transitions. [2023-08-30 14:21:48,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:48,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:48,760 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:48,760 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 227 flow. Second operand 3 states and 865 transitions. [2023-08-30 14:21:48,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 106 transitions, 457 flow [2023-08-30 14:21:48,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 106 transitions, 443 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:48,765 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 229 flow [2023-08-30 14:21:48,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2023-08-30 14:21:48,767 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2023-08-30 14:21:48,767 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 229 flow [2023-08-30 14:21:48,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:48,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:48,769 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:48,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:21:48,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:48,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:48,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1080636955, now seen corresponding path program 1 times [2023-08-30 14:21:48,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:48,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139007834] [2023-08-30 14:21:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:48,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:48,862 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:48,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:48,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139007834] [2023-08-30 14:21:48,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139007834] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:48,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091005892] [2023-08-30 14:21:48,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:48,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:48,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:48,865 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 14:21:48,892 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 14:21:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:48,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:21:48,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:48,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:21:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:49,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091005892] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:21:49,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:21:49,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:21:49,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127934984] [2023-08-30 14:21:49,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:21:49,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:21:49,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:49,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:21:49,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:21:49,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 579 [2023-08-30 14:21:49,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 229 flow. Second operand has 13 states, 13 states have (on average 257.53846153846155) internal successors, (3348), 13 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:49,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:49,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 579 [2023-08-30 14:21:49,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:50,744 INFO L130 PetriNetUnfolder]: 19428/29764 cut-off events. [2023-08-30 14:21:50,744 INFO L131 PetriNetUnfolder]: For 991/991 co-relation queries the response was YES. [2023-08-30 14:21:50,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59871 conditions, 29764 events. 19428/29764 cut-off events. For 991/991 co-relation queries the response was YES. Maximal size of possible extension queue 1074. Compared 208988 event pairs, 18228 based on Foata normal form. 6/21414 useless extension candidates. Maximal degree in co-relation 59853. Up to 28373 conditions per place. [2023-08-30 14:21:50,917 INFO L137 encePairwiseOnDemand]: 576/579 looper letters, 71 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2023-08-30 14:21:50,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 93 transitions, 429 flow [2023-08-30 14:21:50,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:21:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:21:51,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3159 transitions. [2023-08-30 14:21:51,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45466321243523317 [2023-08-30 14:21:51,213 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3159 transitions. [2023-08-30 14:21:51,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3159 transitions. [2023-08-30 14:21:51,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:51,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3159 transitions. [2023-08-30 14:21:51,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 263.25) internal successors, (3159), 12 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:51,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 579.0) internal successors, (7527), 13 states have internal predecessors, (7527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:51,235 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 579.0) internal successors, (7527), 13 states have internal predecessors, (7527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:51,235 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 229 flow. Second operand 12 states and 3159 transitions. [2023-08-30 14:21:51,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 93 transitions, 429 flow [2023-08-30 14:21:51,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 93 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:51,241 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 311 flow [2023-08-30 14:21:51,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=311, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2023-08-30 14:21:51,243 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 23 predicate places. [2023-08-30 14:21:51,243 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 311 flow [2023-08-30 14:21:51,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 257.53846153846155) internal successors, (3348), 13 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:51,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:51,245 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:51,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 14:21:51,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 14:21:51,449 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:51,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:51,450 INFO L85 PathProgramCache]: Analyzing trace with hash 961318149, now seen corresponding path program 2 times [2023-08-30 14:21:51,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:51,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060196929] [2023-08-30 14:21:51,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:51,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:21:51,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:51,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060196929] [2023-08-30 14:21:51,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060196929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:51,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:51,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:21:51,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729629276] [2023-08-30 14:21:51,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:51,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:21:51,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:51,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:21:51,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:21:51,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 579 [2023-08-30 14:21:51,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 247.5) internal successors, (1485), 6 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:51,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:51,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 579 [2023-08-30 14:21:51,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:54,251 INFO L130 PetriNetUnfolder]: 20529/32299 cut-off events. [2023-08-30 14:21:54,252 INFO L131 PetriNetUnfolder]: For 1030/1030 co-relation queries the response was YES. [2023-08-30 14:21:54,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65345 conditions, 32299 events. 20529/32299 cut-off events. For 1030/1030 co-relation queries the response was YES. Maximal size of possible extension queue 1245. Compared 239878 event pairs, 7562 based on Foata normal form. 0/24082 useless extension candidates. Maximal degree in co-relation 65319. Up to 24065 conditions per place. [2023-08-30 14:21:54,400 INFO L137 encePairwiseOnDemand]: 563/579 looper letters, 178 selfloop transitions, 14 changer transitions 0/203 dead transitions. [2023-08-30 14:21:54,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 203 transitions, 950 flow [2023-08-30 14:21:54,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:21:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:21:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1420 transitions. [2023-08-30 14:21:54,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4905008635578584 [2023-08-30 14:21:54,405 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1420 transitions. [2023-08-30 14:21:54,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1420 transitions. [2023-08-30 14:21:54,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:54,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1420 transitions. [2023-08-30 14:21:54,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:54,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 579.0) internal successors, (3474), 6 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:54,412 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 579.0) internal successors, (3474), 6 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:54,412 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 311 flow. Second operand 5 states and 1420 transitions. [2023-08-30 14:21:54,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 203 transitions, 950 flow [2023-08-30 14:21:54,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 203 transitions, 902 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 14:21:54,418 INFO L231 Difference]: Finished difference. Result has 113 places, 105 transitions, 379 flow [2023-08-30 14:21:54,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=113, PETRI_TRANSITIONS=105} [2023-08-30 14:21:54,419 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 26 predicate places. [2023-08-30 14:21:54,419 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 105 transitions, 379 flow [2023-08-30 14:21:54,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 247.5) internal successors, (1485), 6 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:54,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:54,420 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:54,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:21:54,422 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:54,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:54,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1453417142, now seen corresponding path program 1 times [2023-08-30 14:21:54,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:54,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050786232] [2023-08-30 14:21:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:54,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 14:21:54,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:54,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050786232] [2023-08-30 14:21:54,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050786232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:54,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:54,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:21:54,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717572196] [2023-08-30 14:21:54,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:54,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:54,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:54,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:54,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:54,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 579 [2023-08-30 14:21:54,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 105 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:54,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:54,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 579 [2023-08-30 14:21:54,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:56,652 INFO L130 PetriNetUnfolder]: 19783/31709 cut-off events. [2023-08-30 14:21:56,652 INFO L131 PetriNetUnfolder]: For 6391/6445 co-relation queries the response was YES. [2023-08-30 14:21:56,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71916 conditions, 31709 events. 19783/31709 cut-off events. For 6391/6445 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 242876 event pairs, 3998 based on Foata normal form. 0/25634 useless extension candidates. Maximal degree in co-relation 71887. Up to 27250 conditions per place. [2023-08-30 14:21:56,818 INFO L137 encePairwiseOnDemand]: 575/579 looper letters, 130 selfloop transitions, 5 changer transitions 0/146 dead transitions. [2023-08-30 14:21:56,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 146 transitions, 771 flow [2023-08-30 14:21:56,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:56,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:56,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2023-08-30 14:21:56,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048934945308002 [2023-08-30 14:21:56,821 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2023-08-30 14:21:56,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2023-08-30 14:21:56,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:56,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2023-08-30 14:21:56,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:56,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:56,826 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:56,826 INFO L175 Difference]: Start difference. First operand has 113 places, 105 transitions, 379 flow. Second operand 3 states and 877 transitions. [2023-08-30 14:21:56,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 146 transitions, 771 flow [2023-08-30 14:21:56,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 146 transitions, 771 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:21:56,848 INFO L231 Difference]: Finished difference. Result has 115 places, 105 transitions, 396 flow [2023-08-30 14:21:56,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=396, PETRI_PLACES=115, PETRI_TRANSITIONS=105} [2023-08-30 14:21:56,849 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 28 predicate places. [2023-08-30 14:21:56,849 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 105 transitions, 396 flow [2023-08-30 14:21:56,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:56,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:56,850 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:56,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:21:56,850 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:56,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:56,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1453417144, now seen corresponding path program 1 times [2023-08-30 14:21:56,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:56,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233623984] [2023-08-30 14:21:56,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:56,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:56,909 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:21:56,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:56,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233623984] [2023-08-30 14:21:56,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233623984] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:56,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931775087] [2023-08-30 14:21:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:56,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:56,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:56,913 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:21:56,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 14:21:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:57,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:21:57,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:21:57,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:21:57,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931775087] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:57,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:21:57,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 14:21:57,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640722111] [2023-08-30 14:21:57,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:57,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:21:57,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:57,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:21:57,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:21:57,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 579 [2023-08-30 14:21:57,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 105 transitions, 396 flow. Second operand has 4 states, 4 states have (on average 259.25) internal successors, (1037), 4 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:57,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:57,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 579 [2023-08-30 14:21:57,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:59,204 INFO L130 PetriNetUnfolder]: 19150/30264 cut-off events. [2023-08-30 14:21:59,205 INFO L131 PetriNetUnfolder]: For 10073/10073 co-relation queries the response was YES. [2023-08-30 14:21:59,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69998 conditions, 30264 events. 19150/30264 cut-off events. For 10073/10073 co-relation queries the response was YES. Maximal size of possible extension queue 1175. Compared 223571 event pairs, 10109 based on Foata normal form. 387/25120 useless extension candidates. Maximal degree in co-relation 69968. Up to 29107 conditions per place. [2023-08-30 14:21:59,598 INFO L137 encePairwiseOnDemand]: 576/579 looper letters, 107 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2023-08-30 14:21:59,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 120 transitions, 648 flow [2023-08-30 14:21:59,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:21:59,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:21:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1116 transitions. [2023-08-30 14:21:59,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48186528497409326 [2023-08-30 14:21:59,601 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1116 transitions. [2023-08-30 14:21:59,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1116 transitions. [2023-08-30 14:21:59,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:59,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1116 transitions. [2023-08-30 14:21:59,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:59,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 579.0) internal successors, (2895), 5 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:59,607 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 579.0) internal successors, (2895), 5 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:59,607 INFO L175 Difference]: Start difference. First operand has 115 places, 105 transitions, 396 flow. Second operand 4 states and 1116 transitions. [2023-08-30 14:21:59,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 120 transitions, 648 flow [2023-08-30 14:21:59,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 120 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:59,619 INFO L231 Difference]: Finished difference. Result has 116 places, 104 transitions, 391 flow [2023-08-30 14:21:59,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=391, PETRI_PLACES=116, PETRI_TRANSITIONS=104} [2023-08-30 14:21:59,619 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 29 predicate places. [2023-08-30 14:21:59,619 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 104 transitions, 391 flow [2023-08-30 14:21:59,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 259.25) internal successors, (1037), 4 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:59,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:59,620 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:21:59,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 14:21:59,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:59,825 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:59,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:59,826 INFO L85 PathProgramCache]: Analyzing trace with hash -869383873, now seen corresponding path program 1 times [2023-08-30 14:21:59,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:59,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644098391] [2023-08-30 14:21:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:59,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:21:59,854 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:21:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:21:59,888 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:21:59,888 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:21:59,889 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-08-30 14:21:59,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-08-30 14:21:59,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-08-30 14:21:59,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-08-30 14:21:59,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-08-30 14:21:59,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-08-30 14:21:59,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-08-30 14:21:59,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-08-30 14:21:59,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-08-30 14:21:59,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-08-30 14:21:59,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-08-30 14:21:59,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-08-30 14:21:59,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-08-30 14:21:59,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-08-30 14:21:59,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-08-30 14:21:59,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-08-30 14:21:59,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-08-30 14:21:59,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-08-30 14:21:59,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-08-30 14:21:59,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-08-30 14:21:59,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-08-30 14:21:59,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-08-30 14:21:59,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-08-30 14:21:59,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-08-30 14:21:59,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-08-30 14:21:59,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-08-30 14:21:59,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-08-30 14:21:59,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-08-30 14:21:59,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-08-30 14:21:59,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:21:59,894 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:21:59,895 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:21:59,895 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:21:59,935 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:21:59,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 391 transitions, 812 flow [2023-08-30 14:22:00,024 INFO L130 PetriNetUnfolder]: 110/733 cut-off events. [2023-08-30 14:22:00,025 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2023-08-30 14:22:00,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 733 events. 110/733 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3303 event pairs, 1 based on Foata normal form. 0/563 useless extension candidates. Maximal degree in co-relation 505. Up to 16 conditions per place. [2023-08-30 14:22:00,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 339 places, 391 transitions, 812 flow [2023-08-30 14:22:00,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 339 places, 391 transitions, 812 flow [2023-08-30 14:22:00,044 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:22:00,045 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 339 places, 391 transitions, 812 flow [2023-08-30 14:22:00,045 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 339 places, 391 transitions, 812 flow [2023-08-30 14:22:00,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 391 transitions, 812 flow [2023-08-30 14:22:00,126 INFO L130 PetriNetUnfolder]: 110/733 cut-off events. [2023-08-30 14:22:00,127 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2023-08-30 14:22:00,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 733 events. 110/733 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3303 event pairs, 1 based on Foata normal form. 0/563 useless extension candidates. Maximal degree in co-relation 505. Up to 16 conditions per place. [2023-08-30 14:22:00,167 INFO L119 LiptonReduction]: Number of co-enabled transitions 88560 [2023-08-30 14:22:05,148 INFO L134 LiptonReduction]: Checked pairs total: 156401 [2023-08-30 14:22:05,148 INFO L136 LiptonReduction]: Total number of compositions: 354 [2023-08-30 14:22:05,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:22:05,150 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;@ffbc610, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:22:05,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-08-30 14:22:05,151 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:22:05,151 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:22:05,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:22:05,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:22:05,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:22:05,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:22:05,152 INFO L85 PathProgramCache]: Analyzing trace with hash 75591, now seen corresponding path program 1 times [2023-08-30 14:22:05,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:22:05,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311079709] [2023-08-30 14:22:05,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:05,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:22:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:22:05,173 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 14:22:05,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:22:05,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311079709] [2023-08-30 14:22:05,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311079709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:22:05,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:22:05,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:22:05,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841225038] [2023-08-30 14:22:05,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:22:05,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:22:05,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:22:05,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:22:05,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:22:05,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 745 [2023-08-30 14:22:05,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 155 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:05,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:22:05,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 745 [2023-08-30 14:22:05,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:22:46,531 INFO L130 PetriNetUnfolder]: 502322/697114 cut-off events. [2023-08-30 14:22:46,532 INFO L131 PetriNetUnfolder]: For 4983/4983 co-relation queries the response was YES. [2023-08-30 14:22:47,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1359103 conditions, 697114 events. 502322/697114 cut-off events. For 4983/4983 co-relation queries the response was YES. Maximal size of possible extension queue 20969. Compared 5923134 event pairs, 481563 based on Foata normal form. 113137/604741 useless extension candidates. Maximal degree in co-relation 82729. Up to 658989 conditions per place. [2023-08-30 14:22:49,856 INFO L137 encePairwiseOnDemand]: 694/745 looper letters, 88 selfloop transitions, 1 changer transitions 0/105 dead transitions. [2023-08-30 14:22:49,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 105 transitions, 418 flow [2023-08-30 14:22:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:22:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:22:49,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1117 transitions. [2023-08-30 14:22:49,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49977628635346755 [2023-08-30 14:22:49,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1117 transitions. [2023-08-30 14:22:49,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1117 transitions. [2023-08-30 14:22:49,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:22:49,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1117 transitions. [2023-08-30 14:22:49,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 372.3333333333333) internal successors, (1117), 3 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:49,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:49,864 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:49,864 INFO L175 Difference]: Start difference. First operand has 112 places, 155 transitions, 340 flow. Second operand 3 states and 1117 transitions. [2023-08-30 14:22:49,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 105 transitions, 418 flow [2023-08-30 14:22:49,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 105 transitions, 418 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:22:49,868 INFO L231 Difference]: Finished difference. Result has 106 places, 105 transitions, 242 flow [2023-08-30 14:22:49,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=106, PETRI_TRANSITIONS=105} [2023-08-30 14:22:49,869 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -6 predicate places. [2023-08-30 14:22:49,869 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 105 transitions, 242 flow [2023-08-30 14:22:49,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:49,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:22:49,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:22:49,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:22:49,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:22:49,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:22:49,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1254455047, now seen corresponding path program 1 times [2023-08-30 14:22:49,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:22:49,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529959468] [2023-08-30 14:22:49,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:49,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:22:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:22:49,893 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 14:22:49,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:22:49,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529959468] [2023-08-30 14:22:49,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529959468] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:22:49,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:22:49,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:22:49,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577201681] [2023-08-30 14:22:49,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:22:49,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:22:49,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:22:49,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:22:49,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:22:49,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 745 [2023-08-30 14:22:49,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 105 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:49,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:22:49,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 745 [2023-08-30 14:22:49,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:23:34,182 INFO L130 PetriNetUnfolder]: 502322/697115 cut-off events. [2023-08-30 14:23:34,182 INFO L131 PetriNetUnfolder]: For 4983/4983 co-relation queries the response was YES. [2023-08-30 14:23:35,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1359107 conditions, 697115 events. 502322/697115 cut-off events. For 4983/4983 co-relation queries the response was YES. Maximal size of possible extension queue 20969. Compared 5923670 event pairs, 481563 based on Foata normal form. 0/491605 useless extension candidates. Maximal degree in co-relation 1359098. Up to 658990 conditions per place. [2023-08-30 14:23:37,569 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 88 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-30 14:23:37,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 106 transitions, 424 flow [2023-08-30 14:23:37,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:23:37,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:23:37,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1069 transitions. [2023-08-30 14:23:37,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47829977628635345 [2023-08-30 14:23:37,572 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1069 transitions. [2023-08-30 14:23:37,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1069 transitions. [2023-08-30 14:23:37,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:23:37,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1069 transitions. [2023-08-30 14:23:37,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.3333333333333) internal successors, (1069), 3 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:37,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:37,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:37,577 INFO L175 Difference]: Start difference. First operand has 106 places, 105 transitions, 242 flow. Second operand 3 states and 1069 transitions. [2023-08-30 14:23:37,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 106 transitions, 424 flow [2023-08-30 14:23:37,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 106 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:23:37,581 INFO L231 Difference]: Finished difference. Result has 108 places, 106 transitions, 253 flow [2023-08-30 14:23:37,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=108, PETRI_TRANSITIONS=106} [2023-08-30 14:23:37,582 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -4 predicate places. [2023-08-30 14:23:37,582 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 106 transitions, 253 flow [2023-08-30 14:23:37,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:37,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:23:37,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:23:37,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 14:23:37,583 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:23:37,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:23:37,583 INFO L85 PathProgramCache]: Analyzing trace with hash -38347132, now seen corresponding path program 1 times [2023-08-30 14:23:37,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:23:37,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305685010] [2023-08-30 14:23:37,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:23:37,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:23:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:23:37,611 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 14:23:37,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:23:37,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305685010] [2023-08-30 14:23:37,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305685010] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:23:37,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19701270] [2023-08-30 14:23:37,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:23:37,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:23:37,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:23:37,619 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:23:37,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 14:23:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:23:37,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:23:37,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:23:37,712 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 14:23:37,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:23:37,726 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 14:23:37,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19701270] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:23:37,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:23:37,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 14:23:37,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871932202] [2023-08-30 14:23:37,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:23:37,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:23:37,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:23:37,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:23:37,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:23:37,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 745 [2023-08-30 14:23:37,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 106 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 326.5) internal successors, (1959), 6 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:37,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:23:37,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 745 [2023-08-30 14:23:37,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:24:26,992 INFO L130 PetriNetUnfolder]: 502322/697118 cut-off events. [2023-08-30 14:24:26,993 INFO L131 PetriNetUnfolder]: For 4983/4983 co-relation queries the response was YES. [2023-08-30 14:24:28,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1359122 conditions, 697118 events. 502322/697118 cut-off events. For 4983/4983 co-relation queries the response was YES. Maximal size of possible extension queue 20965. Compared 5922819 event pairs, 481563 based on Foata normal form. 0/491608 useless extension candidates. Maximal degree in co-relation 1359111. Up to 658990 conditions per place. [2023-08-30 14:24:30,464 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 88 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2023-08-30 14:24:30,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 109 transitions, 451 flow [2023-08-30 14:24:30,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:24:30,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:24:30,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2046 transitions. [2023-08-30 14:24:30,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577181208053691 [2023-08-30 14:24:30,468 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2046 transitions. [2023-08-30 14:24:30,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2046 transitions. [2023-08-30 14:24:30,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:24:30,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2046 transitions. [2023-08-30 14:24:30,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 341.0) internal successors, (2046), 6 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:30,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:30,478 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:30,478 INFO L175 Difference]: Start difference. First operand has 108 places, 106 transitions, 253 flow. Second operand 6 states and 2046 transitions. [2023-08-30 14:24:30,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 109 transitions, 451 flow [2023-08-30 14:24:30,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 109 transitions, 447 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:24:30,482 INFO L231 Difference]: Finished difference. Result has 115 places, 109 transitions, 285 flow [2023-08-30 14:24:30,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=285, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2023-08-30 14:24:30,482 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 3 predicate places. [2023-08-30 14:24:30,482 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 285 flow [2023-08-30 14:24:30,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 326.5) internal successors, (1959), 6 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:30,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:24:30,483 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 14:24:30,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 14:24:30,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:24:30,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:24:30,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:24:30,689 INFO L85 PathProgramCache]: Analyzing trace with hash 799141447, now seen corresponding path program 2 times [2023-08-30 14:24:30,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:24:30,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049466355] [2023-08-30 14:24:30,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:24:30,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:24:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:24:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:24:30,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:24:30,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049466355] [2023-08-30 14:24:30,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049466355] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:24:30,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:24:30,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:24:30,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253364814] [2023-08-30 14:24:30,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:24:30,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:24:30,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:24:30,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:24:30,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:24:30,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 745 [2023-08-30 14:24:30,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 109 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:30,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:24:30,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 745 [2023-08-30 14:24:30,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:25:18,105 INFO L130 PetriNetUnfolder]: 502804/696787 cut-off events. [2023-08-30 14:25:18,105 INFO L131 PetriNetUnfolder]: For 4910/4910 co-relation queries the response was YES. [2023-08-30 14:25:19,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1358760 conditions, 696787 events. 502804/696787 cut-off events. For 4910/4910 co-relation queries the response was YES. Maximal size of possible extension queue 20669. Compared 5888751 event pairs, 316053 based on Foata normal form. 0/491644 useless extension candidates. Maximal degree in co-relation 1358745. Up to 658881 conditions per place. [2023-08-30 14:25:21,784 INFO L137 encePairwiseOnDemand]: 740/745 looper letters, 111 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2023-08-30 14:25:21,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 129 transitions, 551 flow [2023-08-30 14:25:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:25:21,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:25:21,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1090 transitions. [2023-08-30 14:25:21,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48769574944071586 [2023-08-30 14:25:21,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1090 transitions. [2023-08-30 14:25:21,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1090 transitions. [2023-08-30 14:25:21,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:25:21,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1090 transitions. [2023-08-30 14:25:21,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 363.3333333333333) internal successors, (1090), 3 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:21,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:21,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:21,791 INFO L175 Difference]: Start difference. First operand has 115 places, 109 transitions, 285 flow. Second operand 3 states and 1090 transitions. [2023-08-30 14:25:21,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 129 transitions, 551 flow [2023-08-30 14:25:21,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 129 transitions, 537 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:25:21,796 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 287 flow [2023-08-30 14:25:21,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2023-08-30 14:25:21,797 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 5 predicate places. [2023-08-30 14:25:21,797 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 287 flow [2023-08-30 14:25:21,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:21,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:25:21,797 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:25:21,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 14:25:21,798 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:25:21,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:25:21,798 INFO L85 PathProgramCache]: Analyzing trace with hash 827210064, now seen corresponding path program 1 times [2023-08-30 14:25:21,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:25:21,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40651874] [2023-08-30 14:25:21,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:25:21,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:25:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:25:21,852 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:25:21,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:25:21,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40651874] [2023-08-30 14:25:21,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40651874] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:25:21,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053443268] [2023-08-30 14:25:21,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:25:21,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:25:21,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:25:21,854 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:25:21,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 14:25:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:25:21,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:25:21,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:25:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:25:21,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:25:22,012 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:25:22,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053443268] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:25:22,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:25:22,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-30 14:25:22,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690935865] [2023-08-30 14:25:22,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:25:22,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 14:25:22,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:25:22,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 14:25:22,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 14:25:22,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 745 [2023-08-30 14:25:22,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 287 flow. Second operand has 12 states, 12 states have (on average 326.5) internal successors, (3918), 12 states have internal predecessors, (3918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:22,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:25:22,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 745 [2023-08-30 14:25:22,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:26:13,295 INFO L130 PetriNetUnfolder]: 505061/697892 cut-off events. [2023-08-30 14:26:13,295 INFO L131 PetriNetUnfolder]: For 18604/18604 co-relation queries the response was YES. [2023-08-30 14:26:14,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387248 conditions, 697892 events. 505061/697892 cut-off events. For 18604/18604 co-relation queries the response was YES. Maximal size of possible extension queue 20609. Compared 5872364 event pairs, 481527 based on Foata normal form. 6/499183 useless extension candidates. Maximal degree in co-relation 1387232. Up to 658898 conditions per place. [2023-08-30 14:26:17,260 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 89 selfloop transitions, 11 changer transitions 0/116 dead transitions. [2023-08-30 14:26:17,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 116 transitions, 523 flow [2023-08-30 14:26:17,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:26:17,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:26:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4005 transitions. [2023-08-30 14:26:17,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44798657718120805 [2023-08-30 14:26:17,266 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4005 transitions. [2023-08-30 14:26:17,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4005 transitions. [2023-08-30 14:26:17,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:26:17,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4005 transitions. [2023-08-30 14:26:17,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 333.75) internal successors, (4005), 12 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:26:17,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 745.0) internal successors, (9685), 13 states have internal predecessors, (9685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:26:17,278 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 745.0) internal successors, (9685), 13 states have internal predecessors, (9685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:26:17,278 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 287 flow. Second operand 12 states and 4005 transitions. [2023-08-30 14:26:17,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 116 transitions, 523 flow [2023-08-30 14:26:17,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 116 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:26:17,385 INFO L231 Difference]: Finished difference. Result has 133 places, 116 transitions, 369 flow [2023-08-30 14:26:17,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=369, PETRI_PLACES=133, PETRI_TRANSITIONS=116} [2023-08-30 14:26:17,386 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 21 predicate places. [2023-08-30 14:26:17,386 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 116 transitions, 369 flow [2023-08-30 14:26:17,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 326.5) internal successors, (3918), 12 states have internal predecessors, (3918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:26:17,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:26:17,387 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:26:17,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 14:26:17,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:26:17,589 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:26:17,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:26:17,589 INFO L85 PathProgramCache]: Analyzing trace with hash -136829328, now seen corresponding path program 2 times [2023-08-30 14:26:17,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:26:17,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035681272] [2023-08-30 14:26:17,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:26:17,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:26:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:26:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:26:17,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:26:17,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035681272] [2023-08-30 14:26:17,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035681272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:26:17,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:26:17,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:26:17,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991043351] [2023-08-30 14:26:17,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:26:17,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:26:17,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:26:17,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:26:17,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:26:17,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 745 [2023-08-30 14:26:17,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 116 transitions, 369 flow. Second operand has 6 states, 6 states have (on average 314.5) internal successors, (1887), 6 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:26:17,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:26:17,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 745 [2023-08-30 14:26:17,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:27:13,946 INFO L130 PetriNetUnfolder]: 553682/775623 cut-off events. [2023-08-30 14:27:13,946 INFO L131 PetriNetUnfolder]: For 20661/20661 co-relation queries the response was YES. [2023-08-30 14:27:16,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1548087 conditions, 775623 events. 553682/775623 cut-off events. For 20661/20661 co-relation queries the response was YES. Maximal size of possible extension queue 25074. Compared 6809127 event pairs, 184903 based on Foata normal form. 0/570927 useless extension candidates. Maximal degree in co-relation 1548064. Up to 598516 conditions per place. [2023-08-30 14:27:19,117 INFO L137 encePairwiseOnDemand]: 725/745 looper letters, 232 selfloop transitions, 18 changer transitions 0/266 dead transitions. [2023-08-30 14:27:19,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 266 transitions, 1224 flow [2023-08-30 14:27:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:27:19,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:27:19,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1817 transitions. [2023-08-30 14:27:19,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48778523489932885 [2023-08-30 14:27:19,120 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1817 transitions. [2023-08-30 14:27:19,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1817 transitions. [2023-08-30 14:27:19,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:27:19,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1817 transitions. [2023-08-30 14:27:19,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 363.4) internal successors, (1817), 5 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:19,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 745.0) internal successors, (4470), 6 states have internal predecessors, (4470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:19,125 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 745.0) internal successors, (4470), 6 states have internal predecessors, (4470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:19,125 INFO L175 Difference]: Start difference. First operand has 133 places, 116 transitions, 369 flow. Second operand 5 states and 1817 transitions. [2023-08-30 14:27:19,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 266 transitions, 1224 flow [2023-08-30 14:27:19,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 266 transitions, 1176 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 14:27:19,213 INFO L231 Difference]: Finished difference. Result has 136 places, 132 transitions, 473 flow [2023-08-30 14:27:19,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=473, PETRI_PLACES=136, PETRI_TRANSITIONS=132} [2023-08-30 14:27:19,213 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 24 predicate places. [2023-08-30 14:27:19,213 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 132 transitions, 473 flow [2023-08-30 14:27:19,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 314.5) internal successors, (1887), 6 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:19,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:27:19,214 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:27:19,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 14:27:19,214 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:27:19,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:27:19,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1489443839, now seen corresponding path program 1 times [2023-08-30 14:27:19,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:27:19,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729986158] [2023-08-30 14:27:19,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:27:19,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:27:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:27:19,251 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 14:27:19,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:27:19,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729986158] [2023-08-30 14:27:19,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729986158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:27:19,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:27:19,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:27:19,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319191861] [2023-08-30 14:27:19,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:27:19,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:27:19,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:27:19,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:27:19,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:27:19,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 745 [2023-08-30 14:27:19,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 132 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:19,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:27:19,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 745 [2023-08-30 14:27:19,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:28:21,375 INFO L130 PetriNetUnfolder]: 532393/746533 cut-off events. [2023-08-30 14:28:21,375 INFO L131 PetriNetUnfolder]: For 163771/165025 co-relation queries the response was YES. [2023-08-30 14:28:23,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1709530 conditions, 746533 events. 532393/746533 cut-off events. For 163771/165025 co-relation queries the response was YES. Maximal size of possible extension queue 23384. Compared 6591283 event pairs, 131169 based on Foata normal form. 0/593192 useless extension candidates. Maximal degree in co-relation 1709503. Up to 641631 conditions per place. [2023-08-30 14:28:26,456 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 172 selfloop transitions, 5 changer transitions 0/193 dead transitions. [2023-08-30 14:28:26,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 193 transitions, 1017 flow [2023-08-30 14:28:26,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:28:26,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:28:26,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1118 transitions. [2023-08-30 14:28:26,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5002237136465324 [2023-08-30 14:28:26,459 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1118 transitions. [2023-08-30 14:28:26,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1118 transitions. [2023-08-30 14:28:26,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:28:26,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1118 transitions. [2023-08-30 14:28:26,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:26,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:26,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:26,463 INFO L175 Difference]: Start difference. First operand has 136 places, 132 transitions, 473 flow. Second operand 3 states and 1118 transitions. [2023-08-30 14:28:26,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 193 transitions, 1017 flow [2023-08-30 14:28:27,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 193 transitions, 1017 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:28:27,193 INFO L231 Difference]: Finished difference. Result has 138 places, 132 transitions, 490 flow [2023-08-30 14:28:27,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=490, PETRI_PLACES=138, PETRI_TRANSITIONS=132} [2023-08-30 14:28:27,193 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 26 predicate places. [2023-08-30 14:28:27,193 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 132 transitions, 490 flow [2023-08-30 14:28:27,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:27,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:27,194 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:28:27,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 14:28:27,194 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:28:27,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:27,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1489443841, now seen corresponding path program 1 times [2023-08-30 14:28:27,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:27,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409825836] [2023-08-30 14:28:27,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:27,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:28:27,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:27,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409825836] [2023-08-30 14:28:27,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409825836] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:28:27,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645193656] [2023-08-30 14:28:27,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:27,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:28:27,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:28:27,249 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:28:27,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 14:28:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:27,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:28:27,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:28:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:28:27,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:28:27,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645193656] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:28:27,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:28:27,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 14:28:27,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366551757] [2023-08-30 14:28:27,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:28:27,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:28:27,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:28:27,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:28:27,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:28:27,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 745 [2023-08-30 14:28:27,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 132 transitions, 490 flow. Second operand has 4 states, 4 states have (on average 328.25) internal successors, (1313), 4 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:27,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:28:27,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 745 [2023-08-30 14:28:27,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:29:28,624 INFO L130 PetriNetUnfolder]: 516210/723469 cut-off events. [2023-08-30 14:29:28,624 INFO L131 PetriNetUnfolder]: For 235782/235812 co-relation queries the response was YES. [2023-08-30 14:29:31,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1666073 conditions, 723469 events. 516210/723469 cut-off events. For 235782/235812 co-relation queries the response was YES. Maximal size of possible extension queue 23784. Compared 6280286 event pairs, 344757 based on Foata normal form. 7196/589013 useless extension candidates. Maximal degree in co-relation 1666045. Up to 688358 conditions per place. [2023-08-30 14:29:33,575 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 129 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2023-08-30 14:29:33,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 147 transitions, 786 flow [2023-08-30 14:29:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:29:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:29:33,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1410 transitions. [2023-08-30 14:29:33,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47315436241610737 [2023-08-30 14:29:33,577 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1410 transitions. [2023-08-30 14:29:33,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1410 transitions. [2023-08-30 14:29:33,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:29:33,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1410 transitions. [2023-08-30 14:29:33,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 352.5) internal successors, (1410), 4 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:29:33,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:29:33,581 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:29:33,582 INFO L175 Difference]: Start difference. First operand has 138 places, 132 transitions, 490 flow. Second operand 4 states and 1410 transitions. [2023-08-30 14:29:33,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 147 transitions, 786 flow [2023-08-30 14:29:33,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 147 transitions, 781 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:29:33,820 INFO L231 Difference]: Finished difference. Result has 139 places, 131 transitions, 485 flow [2023-08-30 14:29:33,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=485, PETRI_PLACES=139, PETRI_TRANSITIONS=131} [2023-08-30 14:29:33,820 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 27 predicate places. [2023-08-30 14:29:33,821 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 131 transitions, 485 flow [2023-08-30 14:29:33,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 328.25) internal successors, (1313), 4 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:29:33,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:29:33,821 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:29:33,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 14:29:34,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:29:34,027 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:29:34,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:29:34,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1644101743, now seen corresponding path program 1 times [2023-08-30 14:29:34,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:29:34,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101781168] [2023-08-30 14:29:34,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:29:34,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:29:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:29:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:29:34,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:29:34,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101781168] [2023-08-30 14:29:34,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101781168] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:29:34,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:29:34,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:29:34,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904134127] [2023-08-30 14:29:34,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:29:34,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:29:34,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:29:34,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:29:34,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:29:34,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 745 [2023-08-30 14:29:34,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 131 transitions, 485 flow. Second operand has 3 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:29:34,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:29:34,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 745 [2023-08-30 14:29:34,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15