./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/pthread-deagle/arithmetic_prog_bad.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 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:40:29,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:40:29,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:40:29,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:40:29,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:40:29,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:40:29,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:40:29,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:40:29,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:40:29,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:40:29,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:40:29,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:40:29,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:40:29,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:40:29,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:40:29,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:40:29,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:40:29,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:40:29,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:40:29,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:40:29,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:40:29,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:40:29,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:40:29,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:40:29,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:40:29,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:40:29,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:40:29,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:40:29,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:40:29,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:40:29,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:40:29,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:40:29,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:40:29,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:40:29,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:40:29,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:40:29,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:40:29,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:40:29,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:40:29,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:40:29,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:40:29,849 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:40:29,884 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:40:29,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:40:29,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:40:29,886 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:40:29,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:40:29,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:40:29,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:40:29,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:40:29,888 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:40:29,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:40:29,889 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:40:29,889 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:40:29,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:40:29,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:40:29,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:40:29,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:40:29,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:40:29,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:40:29,890 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:40:29,891 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:40:29,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:40:29,891 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:40:29,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:40:29,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:40:29,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:40:29,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:40:29,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:40:29,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:40:29,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:40:29,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:40:29,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:40:29,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:40:29,893 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:40:29,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:40:29,894 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:40:29,894 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:40:29,894 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:40:29,894 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:40:30,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:40:30,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:40:30,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:40:30,203 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:40:30,203 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:40:30,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-09-01 08:40:31,412 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:40:31,677 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:40:31,678 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-09-01 08:40:31,691 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6afa6d0f7/ff90ad99ee724589aa995016d3e4d91b/FLAG2cbd72be8 [2023-09-01 08:40:31,703 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6afa6d0f7/ff90ad99ee724589aa995016d3e4d91b [2023-09-01 08:40:31,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:40:31,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:40:31,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:40:31,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:40:31,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:40:31,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:40:31" (1/1) ... [2023-09-01 08:40:31,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498abd64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:31, skipping insertion in model container [2023-09-01 08:40:31,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:40:31" (1/1) ... [2023-09-01 08:40:31,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:40:31,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:40:32,156 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2023-09-01 08:40:32,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:40:32,176 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:40:32,208 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2023-09-01 08:40:32,208 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:40:32,266 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:40:32,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:32 WrapperNode [2023-09-01 08:40:32,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:40:32,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:40:32,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:40:32,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:40:32,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:32" (1/1) ... [2023-09-01 08:40:32,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:32" (1/1) ... [2023-09-01 08:40:32,327 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2023-09-01 08:40:32,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:40:32,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:40:32,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:40:32,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:40:32,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:32" (1/1) ... [2023-09-01 08:40:32,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:32" (1/1) ... [2023-09-01 08:40:32,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:32" (1/1) ... [2023-09-01 08:40:32,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:32" (1/1) ... [2023-09-01 08:40:32,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:32" (1/1) ... [2023-09-01 08:40:32,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:32" (1/1) ... [2023-09-01 08:40:32,352 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:32" (1/1) ... [2023-09-01 08:40:32,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:32" (1/1) ... [2023-09-01 08:40:32,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:40:32,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:40:32,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:40:32,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:40:32,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:32" (1/1) ... [2023-09-01 08:40:32,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:40:32,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:40:32,382 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) [2023-09-01 08:40:32,388 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 [2023-09-01 08:40:32,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:40:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:40:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-09-01 08:40:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:40:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:40:32,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:40:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:40:32,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:40:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:40:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 08:40:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:40:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:40:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:40:32,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:40:32,418 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:40:32,531 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:40:32,533 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:40:32,828 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:40:32,835 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:40:32,835 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 08:40:32,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:40:32 BoogieIcfgContainer [2023-09-01 08:40:32,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:40:32,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:40:32,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:40:32,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:40:32,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:40:31" (1/3) ... [2023-09-01 08:40:32,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2b2fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:40:32, skipping insertion in model container [2023-09-01 08:40:32,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:32" (2/3) ... [2023-09-01 08:40:32,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2b2fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:40:32, skipping insertion in model container [2023-09-01 08:40:32,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:40:32" (3/3) ... [2023-09-01 08:40:32,845 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2023-09-01 08:40:32,851 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:40:32,858 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:40:32,859 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 08:40:32,859 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:40:32,964 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 08:40:33,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 146 transitions, 308 flow [2023-09-01 08:40:33,092 INFO L130 PetriNetUnfolder]: 10/144 cut-off events. [2023-09-01 08:40:33,092 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:40:33,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 144 events. 10/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 200 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 90. Up to 3 conditions per place. [2023-09-01 08:40:33,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 146 transitions, 308 flow [2023-09-01 08:40:33,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 129 transitions, 267 flow [2023-09-01 08:40:33,107 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:40:33,124 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 129 transitions, 267 flow [2023-09-01 08:40:33,127 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 129 transitions, 267 flow [2023-09-01 08:40:33,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 129 transitions, 267 flow [2023-09-01 08:40:33,171 INFO L130 PetriNetUnfolder]: 8/129 cut-off events. [2023-09-01 08:40:33,171 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:40:33,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 129 events. 8/129 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2023-09-01 08:40:33,176 INFO L119 LiptonReduction]: Number of co-enabled transitions 3074 [2023-09-01 08:40:38,791 INFO L134 LiptonReduction]: Checked pairs total: 6805 [2023-09-01 08:40:38,791 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-09-01 08:40:38,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:40:38,814 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;@775c7775, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:40:38,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-09-01 08:40:38,825 INFO L130 PetriNetUnfolder]: 2/15 cut-off events. [2023-09-01 08:40:38,825 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:40:38,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:38,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:40:38,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:38,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:38,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1191747266, now seen corresponding path program 1 times [2023-09-01 08:40:38,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:38,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832460217] [2023-09-01 08:40:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:38,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:39,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:39,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832460217] [2023-09-01 08:40:39,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832460217] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:39,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:39,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:40:39,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756777375] [2023-09-01 08:40:39,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:39,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 08:40:39,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:39,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 08:40:39,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 08:40:39,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 255 [2023-09-01 08:40:39,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 81 flow. Second operand has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:39,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:39,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 255 [2023-09-01 08:40:39,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:39,277 INFO L130 PetriNetUnfolder]: 345/594 cut-off events. [2023-09-01 08:40:39,277 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2023-09-01 08:40:39,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 594 events. 345/594 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2578 event pairs, 261 based on Foata normal form. 24/419 useless extension candidates. Maximal degree in co-relation 1074. Up to 561 conditions per place. [2023-09-01 08:40:39,285 INFO L137 encePairwiseOnDemand]: 254/255 looper letters, 28 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2023-09-01 08:40:39,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 135 flow [2023-09-01 08:40:39,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 08:40:39,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 08:40:39,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 301 transitions. [2023-09-01 08:40:39,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5901960784313726 [2023-09-01 08:40:39,305 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 301 transitions. [2023-09-01 08:40:39,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 301 transitions. [2023-09-01 08:40:39,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:39,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 301 transitions. [2023-09-01 08:40:39,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 150.5) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:39,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:39,319 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:39,321 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 81 flow. Second operand 2 states and 301 transitions. [2023-09-01 08:40:39,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 135 flow [2023-09-01 08:40:39,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:40:39,325 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 74 flow [2023-09-01 08:40:39,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-09-01 08:40:39,330 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2023-09-01 08:40:39,330 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 74 flow [2023-09-01 08:40:39,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:39,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:39,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:39,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:40:39,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:39,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:39,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1710452295, now seen corresponding path program 1 times [2023-09-01 08:40:39,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:39,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17179107] [2023-09-01 08:40:39,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:39,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:39,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:39,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17179107] [2023-09-01 08:40:39,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17179107] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:39,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:39,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:40:39,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434409980] [2023-09-01 08:40:39,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:39,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:40:39,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:39,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:40:39,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:40:39,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 255 [2023-09-01 08:40:39,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:39,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:39,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 255 [2023-09-01 08:40:39,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:39,767 INFO L130 PetriNetUnfolder]: 1041/1685 cut-off events. [2023-09-01 08:40:39,767 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 08:40:39,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3349 conditions, 1685 events. 1041/1685 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7432 event pairs, 260 based on Foata normal form. 0/1087 useless extension candidates. Maximal degree in co-relation 3346. Up to 643 conditions per place. [2023-09-01 08:40:39,775 INFO L137 encePairwiseOnDemand]: 242/255 looper letters, 77 selfloop transitions, 19 changer transitions 0/99 dead transitions. [2023-09-01 08:40:39,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 99 transitions, 397 flow [2023-09-01 08:40:39,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:40:39,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:40:39,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 730 transitions. [2023-09-01 08:40:39,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725490196078431 [2023-09-01 08:40:39,779 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 730 transitions. [2023-09-01 08:40:39,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 730 transitions. [2023-09-01 08:40:39,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:39,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 730 transitions. [2023-09-01 08:40:39,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:39,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:39,803 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:39,803 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 74 flow. Second operand 5 states and 730 transitions. [2023-09-01 08:40:39,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 99 transitions, 397 flow [2023-09-01 08:40:39,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 99 transitions, 397 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 08:40:39,806 INFO L231 Difference]: Finished difference. Result has 44 places, 53 transitions, 230 flow [2023-09-01 08:40:39,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=44, PETRI_TRANSITIONS=53} [2023-09-01 08:40:39,807 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2023-09-01 08:40:39,807 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 53 transitions, 230 flow [2023-09-01 08:40:39,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:39,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:39,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:39,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:40:39,808 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:39,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:39,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1710452403, now seen corresponding path program 1 times [2023-09-01 08:40:39,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:39,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258870741] [2023-09-01 08:40:39,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:39,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:39,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:39,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258870741] [2023-09-01 08:40:39,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258870741] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:39,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:39,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:40:39,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742937712] [2023-09-01 08:40:39,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:39,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:40:39,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:39,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:40:39,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:40:39,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 255 [2023-09-01 08:40:39,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 53 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:39,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:39,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 255 [2023-09-01 08:40:39,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:40,209 INFO L130 PetriNetUnfolder]: 1487/2394 cut-off events. [2023-09-01 08:40:40,209 INFO L131 PetriNetUnfolder]: For 1212/1212 co-relation queries the response was YES. [2023-09-01 08:40:40,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6666 conditions, 2394 events. 1487/2394 cut-off events. For 1212/1212 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11403 event pairs, 230 based on Foata normal form. 152/2045 useless extension candidates. Maximal degree in co-relation 6659. Up to 1202 conditions per place. [2023-09-01 08:40:40,222 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 103 selfloop transitions, 43 changer transitions 0/148 dead transitions. [2023-09-01 08:40:40,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 148 transitions, 925 flow [2023-09-01 08:40:40,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:40:40,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:40:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 733 transitions. [2023-09-01 08:40:40,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5749019607843138 [2023-09-01 08:40:40,225 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 733 transitions. [2023-09-01 08:40:40,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 733 transitions. [2023-09-01 08:40:40,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:40,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 733 transitions. [2023-09-01 08:40:40,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:40,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:40,231 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:40,231 INFO L175 Difference]: Start difference. First operand has 44 places, 53 transitions, 230 flow. Second operand 5 states and 733 transitions. [2023-09-01 08:40:40,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 148 transitions, 925 flow [2023-09-01 08:40:40,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 148 transitions, 925 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 08:40:40,239 INFO L231 Difference]: Finished difference. Result has 52 places, 91 transitions, 706 flow [2023-09-01 08:40:40,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=706, PETRI_PLACES=52, PETRI_TRANSITIONS=91} [2023-09-01 08:40:40,240 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2023-09-01 08:40:40,241 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 91 transitions, 706 flow [2023-09-01 08:40:40,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:40,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:40,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:40,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 08:40:40,242 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:40,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:40,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1484417982, now seen corresponding path program 1 times [2023-09-01 08:40:40,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:40,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867338038] [2023-09-01 08:40:40,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:40,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:40,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:40,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867338038] [2023-09-01 08:40:40,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867338038] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:40,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:40,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:40:40,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237622978] [2023-09-01 08:40:40,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:40,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:40:40,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:40,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:40:40,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:40:40,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 255 [2023-09-01 08:40:40,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 91 transitions, 706 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:40,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:40,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 255 [2023-09-01 08:40:40,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:40,686 INFO L130 PetriNetUnfolder]: 1778/3057 cut-off events. [2023-09-01 08:40:40,686 INFO L131 PetriNetUnfolder]: For 7271/7667 co-relation queries the response was YES. [2023-09-01 08:40:40,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11184 conditions, 3057 events. 1778/3057 cut-off events. For 7271/7667 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 17436 event pairs, 553 based on Foata normal form. 92/2559 useless extension candidates. Maximal degree in co-relation 11173. Up to 1779 conditions per place. [2023-09-01 08:40:40,710 INFO L137 encePairwiseOnDemand]: 250/255 looper letters, 109 selfloop transitions, 9 changer transitions 0/139 dead transitions. [2023-09-01 08:40:40,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 139 transitions, 1300 flow [2023-09-01 08:40:40,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:40:40,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:40:40,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-09-01 08:40:40,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5843137254901961 [2023-09-01 08:40:40,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-09-01 08:40:40,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-09-01 08:40:40,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:40,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-09-01 08:40:40,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:40,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:40,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:40,716 INFO L175 Difference]: Start difference. First operand has 52 places, 91 transitions, 706 flow. Second operand 3 states and 447 transitions. [2023-09-01 08:40:40,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 139 transitions, 1300 flow [2023-09-01 08:40:40,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 139 transitions, 1300 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 08:40:40,726 INFO L231 Difference]: Finished difference. Result has 55 places, 99 transitions, 861 flow [2023-09-01 08:40:40,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=861, PETRI_PLACES=55, PETRI_TRANSITIONS=99} [2023-09-01 08:40:40,727 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2023-09-01 08:40:40,728 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 99 transitions, 861 flow [2023-09-01 08:40:40,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:40,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:40,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:40,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:40:40,729 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:40,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:40,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1288775049, now seen corresponding path program 1 times [2023-09-01 08:40:40,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:40,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165395256] [2023-09-01 08:40:40,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:40,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:40,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:40,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165395256] [2023-09-01 08:40:40,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165395256] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:40,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:40,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:40:40,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809063268] [2023-09-01 08:40:40,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:40,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:40:40,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:40,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:40:40,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:40:40,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 255 [2023-09-01 08:40:40,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 99 transitions, 861 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:40,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:40,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 255 [2023-09-01 08:40:40,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:41,049 INFO L130 PetriNetUnfolder]: 1166/1959 cut-off events. [2023-09-01 08:40:41,049 INFO L131 PetriNetUnfolder]: For 5347/5717 co-relation queries the response was YES. [2023-09-01 08:40:41,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7770 conditions, 1959 events. 1166/1959 cut-off events. For 5347/5717 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9404 event pairs, 252 based on Foata normal form. 128/1676 useless extension candidates. Maximal degree in co-relation 7757. Up to 1521 conditions per place. [2023-09-01 08:40:41,065 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 88 selfloop transitions, 12 changer transitions 3/114 dead transitions. [2023-09-01 08:40:41,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 114 transitions, 1128 flow [2023-09-01 08:40:41,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:40:41,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:40:41,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2023-09-01 08:40:41,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5699346405228758 [2023-09-01 08:40:41,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2023-09-01 08:40:41,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2023-09-01 08:40:41,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:41,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2023-09-01 08:40:41,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,071 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,071 INFO L175 Difference]: Start difference. First operand has 55 places, 99 transitions, 861 flow. Second operand 3 states and 436 transitions. [2023-09-01 08:40:41,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 114 transitions, 1128 flow [2023-09-01 08:40:41,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 114 transitions, 1123 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:40:41,081 INFO L231 Difference]: Finished difference. Result has 58 places, 95 transitions, 860 flow [2023-09-01 08:40:41,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=860, PETRI_PLACES=58, PETRI_TRANSITIONS=95} [2023-09-01 08:40:41,082 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-09-01 08:40:41,082 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 95 transitions, 860 flow [2023-09-01 08:40:41,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:41,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:41,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:40:41,083 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:41,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:41,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1476933034, now seen corresponding path program 1 times [2023-09-01 08:40:41,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:41,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430680038] [2023-09-01 08:40:41,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:41,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:41,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:41,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430680038] [2023-09-01 08:40:41,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430680038] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:41,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:41,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:40:41,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718461503] [2023-09-01 08:40:41,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:41,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:40:41,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:41,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:40:41,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:40:41,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 255 [2023-09-01 08:40:41,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 95 transitions, 860 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:41,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 255 [2023-09-01 08:40:41,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:41,330 INFO L130 PetriNetUnfolder]: 407/866 cut-off events. [2023-09-01 08:40:41,330 INFO L131 PetriNetUnfolder]: For 1455/1455 co-relation queries the response was YES. [2023-09-01 08:40:41,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2999 conditions, 866 events. 407/866 cut-off events. For 1455/1455 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4310 event pairs, 124 based on Foata normal form. 52/822 useless extension candidates. Maximal degree in co-relation 2985. Up to 407 conditions per place. [2023-09-01 08:40:41,336 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 29 selfloop transitions, 16 changer transitions 0/55 dead transitions. [2023-09-01 08:40:41,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 431 flow [2023-09-01 08:40:41,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:40:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:40:41,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-09-01 08:40:41,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2023-09-01 08:40:41,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-09-01 08:40:41,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-09-01 08:40:41,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:41,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-09-01 08:40:41,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,342 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,342 INFO L175 Difference]: Start difference. First operand has 58 places, 95 transitions, 860 flow. Second operand 3 states and 420 transitions. [2023-09-01 08:40:41,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 431 flow [2023-09-01 08:40:41,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 342 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-09-01 08:40:41,351 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 259 flow [2023-09-01 08:40:41,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-09-01 08:40:41,354 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2023-09-01 08:40:41,355 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 259 flow [2023-09-01 08:40:41,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:41,355 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 08:40:41,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:40:41,356 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:41,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:41,356 INFO L85 PathProgramCache]: Analyzing trace with hash 51057020, now seen corresponding path program 1 times [2023-09-01 08:40:41,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:41,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257858749] [2023-09-01 08:40:41,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:41,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:41,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:41,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257858749] [2023-09-01 08:40:41,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257858749] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:41,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:41,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 08:40:41,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746460773] [2023-09-01 08:40:41,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:41,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:40:41,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:41,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:40:41,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:40:41,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 255 [2023-09-01 08:40:41,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:41,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 255 [2023-09-01 08:40:41,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:41,624 INFO L130 PetriNetUnfolder]: 380/763 cut-off events. [2023-09-01 08:40:41,625 INFO L131 PetriNetUnfolder]: For 630/630 co-relation queries the response was YES. [2023-09-01 08:40:41,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 763 events. 380/763 cut-off events. For 630/630 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3215 event pairs, 81 based on Foata normal form. 26/745 useless extension candidates. Maximal degree in co-relation 2273. Up to 304 conditions per place. [2023-09-01 08:40:41,629 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 57 selfloop transitions, 11 changer transitions 7/77 dead transitions. [2023-09-01 08:40:41,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 492 flow [2023-09-01 08:40:41,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:40:41,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:40:41,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 820 transitions. [2023-09-01 08:40:41,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2023-09-01 08:40:41,632 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 820 transitions. [2023-09-01 08:40:41,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 820 transitions. [2023-09-01 08:40:41,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:41,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 820 transitions. [2023-09-01 08:40:41,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,636 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,636 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 259 flow. Second operand 6 states and 820 transitions. [2023-09-01 08:40:41,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 492 flow [2023-09-01 08:40:41,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 77 transitions, 469 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:40:41,640 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 265 flow [2023-09-01 08:40:41,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-09-01 08:40:41,641 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2023-09-01 08:40:41,641 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 265 flow [2023-09-01 08:40:41,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:41,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:41,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 08:40:41,642 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:41,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:41,642 INFO L85 PathProgramCache]: Analyzing trace with hash 15479413, now seen corresponding path program 1 times [2023-09-01 08:40:41,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:41,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102322985] [2023-09-01 08:40:41,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:41,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:41,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:41,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102322985] [2023-09-01 08:40:41,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102322985] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:41,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:41,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:40:41,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208235375] [2023-09-01 08:40:41,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:41,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:40:41,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:41,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:40:41,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:40:41,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 255 [2023-09-01 08:40:41,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 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) [2023-09-01 08:40:41,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:41,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 255 [2023-09-01 08:40:41,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:41,881 INFO L130 PetriNetUnfolder]: 465/956 cut-off events. [2023-09-01 08:40:41,881 INFO L131 PetriNetUnfolder]: For 1159/1159 co-relation queries the response was YES. [2023-09-01 08:40:41,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2839 conditions, 956 events. 465/956 cut-off events. For 1159/1159 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4382 event pairs, 90 based on Foata normal form. 22/934 useless extension candidates. Maximal degree in co-relation 2826. Up to 335 conditions per place. [2023-09-01 08:40:41,886 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 62 selfloop transitions, 20 changer transitions 0/84 dead transitions. [2023-09-01 08:40:41,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 571 flow [2023-09-01 08:40:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:40:41,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:40:41,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 822 transitions. [2023-09-01 08:40:41,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372549019607843 [2023-09-01 08:40:41,889 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 822 transitions. [2023-09-01 08:40:41,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 822 transitions. [2023-09-01 08:40:41,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:41,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 822 transitions. [2023-09-01 08:40:41,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,894 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,894 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 265 flow. Second operand 6 states and 822 transitions. [2023-09-01 08:40:41,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 571 flow [2023-09-01 08:40:41,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 545 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:40:41,899 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 341 flow [2023-09-01 08:40:41,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=341, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2023-09-01 08:40:41,899 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-09-01 08:40:41,900 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 341 flow [2023-09-01 08:40:41,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 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) [2023-09-01 08:40:41,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:41,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:41,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 08:40:41,901 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:41,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:41,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1990762071, now seen corresponding path program 1 times [2023-09-01 08:40:41,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:41,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198941523] [2023-09-01 08:40:41,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:41,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:41,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:41,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198941523] [2023-09-01 08:40:41,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198941523] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:41,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:41,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:40:41,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555309318] [2023-09-01 08:40:41,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:41,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:40:41,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:41,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:40:41,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:40:41,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 255 [2023-09-01 08:40:41,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:41,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:41,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 255 [2023-09-01 08:40:41,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:42,092 INFO L130 PetriNetUnfolder]: 414/921 cut-off events. [2023-09-01 08:40:42,093 INFO L131 PetriNetUnfolder]: For 1226/1230 co-relation queries the response was YES. [2023-09-01 08:40:42,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2798 conditions, 921 events. 414/921 cut-off events. For 1226/1230 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4693 event pairs, 234 based on Foata normal form. 18/889 useless extension candidates. Maximal degree in co-relation 2784. Up to 630 conditions per place. [2023-09-01 08:40:42,100 INFO L137 encePairwiseOnDemand]: 250/255 looper letters, 50 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-09-01 08:40:42,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 65 transitions, 514 flow [2023-09-01 08:40:42,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:40:42,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:40:42,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-09-01 08:40:42,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5764705882352941 [2023-09-01 08:40:42,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-09-01 08:40:42,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-09-01 08:40:42,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:42,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-09-01 08:40:42,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:42,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:42,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:42,106 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 341 flow. Second operand 3 states and 441 transitions. [2023-09-01 08:40:42,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 65 transitions, 514 flow [2023-09-01 08:40:42,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 474 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 08:40:42,110 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 322 flow [2023-09-01 08:40:42,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-09-01 08:40:42,111 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2023-09-01 08:40:42,111 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 322 flow [2023-09-01 08:40:42,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:42,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:42,112 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:42,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 08:40:42,112 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:42,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:42,113 INFO L85 PathProgramCache]: Analyzing trace with hash 902276768, now seen corresponding path program 1 times [2023-09-01 08:40:42,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:42,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272507202] [2023-09-01 08:40:42,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:42,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:42,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:42,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272507202] [2023-09-01 08:40:42,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272507202] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:40:42,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812842655] [2023-09-01 08:40:42,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:42,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:40:42,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:40:42,257 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) [2023-09-01 08:40:42,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:40:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:42,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:40:42,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:40:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:42,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:40:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:42,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812842655] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:40:42,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:40:42,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-09-01 08:40:42,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364355631] [2023-09-01 08:40:42,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:40:42,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 08:40:42,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:42,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 08:40:42,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-09-01 08:40:42,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 255 [2023-09-01 08:40:42,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 322 flow. Second operand has 10 states, 10 states have (on average 123.8) internal successors, (1238), 10 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:42,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:42,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 255 [2023-09-01 08:40:42,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:42,809 INFO L130 PetriNetUnfolder]: 440/943 cut-off events. [2023-09-01 08:40:42,809 INFO L131 PetriNetUnfolder]: For 1034/1034 co-relation queries the response was YES. [2023-09-01 08:40:42,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2846 conditions, 943 events. 440/943 cut-off events. For 1034/1034 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4528 event pairs, 106 based on Foata normal form. 48/947 useless extension candidates. Maximal degree in co-relation 2831. Up to 395 conditions per place. [2023-09-01 08:40:42,819 INFO L137 encePairwiseOnDemand]: 237/255 looper letters, 51 selfloop transitions, 25 changer transitions 0/78 dead transitions. [2023-09-01 08:40:42,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 78 transitions, 542 flow [2023-09-01 08:40:42,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:40:42,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:40:42,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1026 transitions. [2023-09-01 08:40:42,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029411764705882 [2023-09-01 08:40:42,823 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1026 transitions. [2023-09-01 08:40:42,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1026 transitions. [2023-09-01 08:40:42,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:42,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1026 transitions. [2023-09-01 08:40:42,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.25) internal successors, (1026), 8 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:42,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:42,829 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:42,829 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 322 flow. Second operand 8 states and 1026 transitions. [2023-09-01 08:40:42,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 78 transitions, 542 flow [2023-09-01 08:40:42,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 78 transitions, 537 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:40:42,833 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 357 flow [2023-09-01 08:40:42,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=357, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2023-09-01 08:40:42,834 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2023-09-01 08:40:42,835 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 357 flow [2023-09-01 08:40:42,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 123.8) internal successors, (1238), 10 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:42,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:42,836 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:42,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:40:43,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 08:40:43,042 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:43,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:43,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1885524128, now seen corresponding path program 1 times [2023-09-01 08:40:43,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:43,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800184559] [2023-09-01 08:40:43,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:43,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:43,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:43,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800184559] [2023-09-01 08:40:43,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800184559] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:43,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:43,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 08:40:43,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111907444] [2023-09-01 08:40:43,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:43,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 08:40:43,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:43,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 08:40:43,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:40:43,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 255 [2023-09-01 08:40:43,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:43,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 255 [2023-09-01 08:40:43,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:43,330 INFO L130 PetriNetUnfolder]: 404/865 cut-off events. [2023-09-01 08:40:43,331 INFO L131 PetriNetUnfolder]: For 930/930 co-relation queries the response was YES. [2023-09-01 08:40:43,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2870 conditions, 865 events. 404/865 cut-off events. For 930/930 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3988 event pairs, 107 based on Foata normal form. 20/841 useless extension candidates. Maximal degree in co-relation 2854. Up to 332 conditions per place. [2023-09-01 08:40:43,335 INFO L137 encePairwiseOnDemand]: 242/255 looper letters, 53 selfloop transitions, 20 changer transitions 0/75 dead transitions. [2023-09-01 08:40:43,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 556 flow [2023-09-01 08:40:43,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:40:43,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:40:43,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1032 transitions. [2023-09-01 08:40:43,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058823529411764 [2023-09-01 08:40:43,338 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1032 transitions. [2023-09-01 08:40:43,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1032 transitions. [2023-09-01 08:40:43,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:43,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1032 transitions. [2023-09-01 08:40:43,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,344 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,345 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 357 flow. Second operand 8 states and 1032 transitions. [2023-09-01 08:40:43,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 556 flow [2023-09-01 08:40:43,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 518 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-09-01 08:40:43,348 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 321 flow [2023-09-01 08:40:43,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=321, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2023-09-01 08:40:43,349 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2023-09-01 08:40:43,349 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 321 flow [2023-09-01 08:40:43,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:43,350 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:43,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 08:40:43,350 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:43,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:43,351 INFO L85 PathProgramCache]: Analyzing trace with hash -471659345, now seen corresponding path program 1 times [2023-09-01 08:40:43,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:43,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983274591] [2023-09-01 08:40:43,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:43,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:43,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:40:43,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:43,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983274591] [2023-09-01 08:40:43,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983274591] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:43,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:43,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:40:43,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438518299] [2023-09-01 08:40:43,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:43,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:40:43,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:43,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:40:43,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:40:43,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 255 [2023-09-01 08:40:43,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:43,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 255 [2023-09-01 08:40:43,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:43,494 INFO L130 PetriNetUnfolder]: 321/734 cut-off events. [2023-09-01 08:40:43,495 INFO L131 PetriNetUnfolder]: For 776/778 co-relation queries the response was YES. [2023-09-01 08:40:43,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2377 conditions, 734 events. 321/734 cut-off events. For 776/778 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3371 event pairs, 148 based on Foata normal form. 2/706 useless extension candidates. Maximal degree in co-relation 2361. Up to 350 conditions per place. [2023-09-01 08:40:43,498 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 47 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2023-09-01 08:40:43,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 506 flow [2023-09-01 08:40:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:40:43,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:40:43,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-09-01 08:40:43,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5647058823529412 [2023-09-01 08:40:43,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-09-01 08:40:43,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-09-01 08:40:43,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:43,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-09-01 08:40:43,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,504 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 321 flow. Second operand 3 states and 432 transitions. [2023-09-01 08:40:43,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 506 flow [2023-09-01 08:40:43,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 465 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 08:40:43,507 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 283 flow [2023-09-01 08:40:43,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2023-09-01 08:40:43,508 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-09-01 08:40:43,508 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 283 flow [2023-09-01 08:40:43,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:43,509 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:43,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 08:40:43,509 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:43,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:43,510 INFO L85 PathProgramCache]: Analyzing trace with hash -2126348470, now seen corresponding path program 1 times [2023-09-01 08:40:43,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:43,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164910772] [2023-09-01 08:40:43,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:43,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:43,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:43,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:43,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164910772] [2023-09-01 08:40:43,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164910772] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:43,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:43,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:40:43,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532624324] [2023-09-01 08:40:43,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:43,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:40:43,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:43,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:40:43,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:40:43,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 255 [2023-09-01 08:40:43,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 283 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:43,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 255 [2023-09-01 08:40:43,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:43,652 INFO L130 PetriNetUnfolder]: 302/669 cut-off events. [2023-09-01 08:40:43,652 INFO L131 PetriNetUnfolder]: For 876/878 co-relation queries the response was YES. [2023-09-01 08:40:43,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 669 events. 302/669 cut-off events. For 876/878 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2937 event pairs, 58 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 2111. Up to 524 conditions per place. [2023-09-01 08:40:43,656 INFO L137 encePairwiseOnDemand]: 253/255 looper letters, 42 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-09-01 08:40:43,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 414 flow [2023-09-01 08:40:43,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:40:43,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:40:43,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-09-01 08:40:43,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5607843137254902 [2023-09-01 08:40:43,658 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-09-01 08:40:43,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-09-01 08:40:43,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:43,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-09-01 08:40:43,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,661 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,661 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 283 flow. Second operand 3 states and 429 transitions. [2023-09-01 08:40:43,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 414 flow [2023-09-01 08:40:43,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 406 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:40:43,664 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 272 flow [2023-09-01 08:40:43,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2023-09-01 08:40:43,669 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-09-01 08:40:43,669 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 272 flow [2023-09-01 08:40:43,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:43,670 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:43,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 08:40:43,670 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:43,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:43,670 INFO L85 PathProgramCache]: Analyzing trace with hash -495404400, now seen corresponding path program 1 times [2023-09-01 08:40:43,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:43,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380278366] [2023-09-01 08:40:43,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:43,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:40:43,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:43,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380278366] [2023-09-01 08:40:43,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380278366] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:43,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:43,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:40:43,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246683682] [2023-09-01 08:40:43,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:43,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:40:43,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:43,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:40:43,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:40:43,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 255 [2023-09-01 08:40:43,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:43,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 255 [2023-09-01 08:40:43,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:43,802 INFO L130 PetriNetUnfolder]: 283/616 cut-off events. [2023-09-01 08:40:43,803 INFO L131 PetriNetUnfolder]: For 748/750 co-relation queries the response was YES. [2023-09-01 08:40:43,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1925 conditions, 616 events. 283/616 cut-off events. For 748/750 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2574 event pairs, 76 based on Foata normal form. 2/614 useless extension candidates. Maximal degree in co-relation 1909. Up to 371 conditions per place. [2023-09-01 08:40:43,805 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 34 selfloop transitions, 4 changer transitions 5/53 dead transitions. [2023-09-01 08:40:43,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 403 flow [2023-09-01 08:40:43,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:40:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:40:43,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-09-01 08:40:43,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5581699346405229 [2023-09-01 08:40:43,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-09-01 08:40:43,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-09-01 08:40:43,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:43,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-09-01 08:40:43,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,811 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,811 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 272 flow. Second operand 3 states and 427 transitions. [2023-09-01 08:40:43,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 403 flow [2023-09-01 08:40:43,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:40:43,814 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 275 flow [2023-09-01 08:40:43,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2023-09-01 08:40:43,814 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2023-09-01 08:40:43,814 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 275 flow [2023-09-01 08:40:43,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:43,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:43,815 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:43,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 08:40:43,815 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:43,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:43,816 INFO L85 PathProgramCache]: Analyzing trace with hash -479499924, now seen corresponding path program 1 times [2023-09-01 08:40:43,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:43,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883898093] [2023-09-01 08:40:43,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:43,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:43,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:43,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:43,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883898093] [2023-09-01 08:40:43,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883898093] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:40:43,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239915803] [2023-09-01 08:40:43,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:43,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:40:43,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:40:43,875 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) [2023-09-01 08:40:43,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:40:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:43,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:40:43,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:40:44,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:44,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:40:44,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239915803] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:44,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:40:44,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 08:40:44,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833462496] [2023-09-01 08:40:44,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:44,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:40:44,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:44,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:40:44,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:40:44,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 255 [2023-09-01 08:40:44,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:44,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:44,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 255 [2023-09-01 08:40:44,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:44,095 INFO L130 PetriNetUnfolder]: 211/466 cut-off events. [2023-09-01 08:40:44,096 INFO L131 PetriNetUnfolder]: For 670/676 co-relation queries the response was YES. [2023-09-01 08:40:44,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1551 conditions, 466 events. 211/466 cut-off events. For 670/676 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1752 event pairs, 48 based on Foata normal form. 12/476 useless extension candidates. Maximal degree in co-relation 1535. Up to 326 conditions per place. [2023-09-01 08:40:44,098 INFO L137 encePairwiseOnDemand]: 252/255 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2023-09-01 08:40:44,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 391 flow [2023-09-01 08:40:44,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:40:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:40:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 563 transitions. [2023-09-01 08:40:44,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5519607843137255 [2023-09-01 08:40:44,100 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 563 transitions. [2023-09-01 08:40:44,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 563 transitions. [2023-09-01 08:40:44,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:44,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 563 transitions. [2023-09-01 08:40:44,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:44,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:44,104 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:44,104 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 275 flow. Second operand 4 states and 563 transitions. [2023-09-01 08:40:44,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 391 flow [2023-09-01 08:40:44,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 385 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:40:44,107 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-09-01 08:40:44,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-09-01 08:40:44,107 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-09-01 08:40:44,107 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-09-01 08:40:44,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:44,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-09-01 08:40:44,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-09-01 08:40:44,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-09-01 08:40:44,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-09-01 08:40:44,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-09-01 08:40:44,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-09-01 08:40:44,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-09-01 08:40:44,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-09-01 08:40:44,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-09-01 08:40:44,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-09-01 08:40:44,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-09-01 08:40:44,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-09-01 08:40:44,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-09-01 08:40:44,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-09-01 08:40:44,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-09-01 08:40:44,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-09-01 08:40:44,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-09-01 08:40:44,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-09-01 08:40:44,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:40:44,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 08:40:44,319 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:44,323 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:40:44,323 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:40:44,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:40:44 BasicIcfg [2023-09-01 08:40:44,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:40:44,326 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:40:44,326 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:40:44,326 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:40:44,327 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:40:32" (3/4) ... [2023-09-01 08:40:44,328 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:40:44,333 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:40:44,333 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:40:44,338 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-09-01 08:40:44,338 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-09-01 08:40:44,338 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:40:44,339 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:40:44,366 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:40:44,367 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:40:44,367 INFO L158 Benchmark]: Toolchain (without parser) took 12661.10ms. Allocated memory was 60.8MB in the beginning and 325.1MB in the end (delta: 264.2MB). Free memory was 26.8MB in the beginning and 125.6MB in the end (delta: -98.9MB). Peak memory consumption was 165.4MB. Max. memory is 16.1GB. [2023-09-01 08:40:44,367 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 60.8MB. Free memory is still 38.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:40:44,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 560.48ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 26.6MB in the beginning and 40.4MB in the end (delta: -13.8MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2023-09-01 08:40:44,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.28ms. Allocated memory is still 81.8MB. Free memory was 40.4MB in the beginning and 38.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:40:44,368 INFO L158 Benchmark]: Boogie Preprocessor took 27.52ms. Allocated memory is still 81.8MB. Free memory was 38.0MB in the beginning and 36.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:40:44,368 INFO L158 Benchmark]: RCFGBuilder took 481.70ms. Allocated memory is still 81.8MB. Free memory was 36.3MB in the beginning and 46.2MB in the end (delta: -10.0MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2023-09-01 08:40:44,369 INFO L158 Benchmark]: TraceAbstraction took 11486.25ms. Allocated memory was 81.8MB in the beginning and 325.1MB in the end (delta: 243.3MB). Free memory was 45.8MB in the beginning and 128.8MB in the end (delta: -83.0MB). Peak memory consumption was 159.6MB. Max. memory is 16.1GB. [2023-09-01 08:40:44,369 INFO L158 Benchmark]: Witness Printer took 40.58ms. Allocated memory is still 325.1MB. Free memory was 128.8MB in the beginning and 125.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:40:44,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 60.8MB. Free memory is still 38.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 560.48ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 26.6MB in the beginning and 40.4MB in the end (delta: -13.8MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.28ms. Allocated memory is still 81.8MB. Free memory was 40.4MB in the beginning and 38.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.52ms. Allocated memory is still 81.8MB. Free memory was 38.0MB in the beginning and 36.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 481.70ms. Allocated memory is still 81.8MB. Free memory was 36.3MB in the beginning and 46.2MB in the end (delta: -10.0MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * TraceAbstraction took 11486.25ms. Allocated memory was 81.8MB in the beginning and 325.1MB in the end (delta: 243.3MB). Free memory was 45.8MB in the beginning and 128.8MB in the end (delta: -83.0MB). Peak memory consumption was 159.6MB. Max. memory is 16.1GB. * Witness Printer took 40.58ms. Allocated memory is still 325.1MB. Free memory was 128.8MB in the beginning and 125.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.7s, 128 PlacesBefore, 38 PlacesAfterwards, 129 TransitionsBefore, 36 TransitionsAfterwards, 3074 CoEnabledTransitionPairs, 7 FixpointIterations, 50 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 109 TotalNumberOfCompositions, 6805 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3827, independent: 3611, independent conditional: 0, independent unconditional: 3611, dependent: 216, dependent conditional: 0, dependent unconditional: 216, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1671, independent: 1627, independent conditional: 0, independent unconditional: 1627, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3827, independent: 1984, independent conditional: 0, independent unconditional: 1984, dependent: 172, dependent conditional: 0, dependent unconditional: 172, unknown: 1671, unknown conditional: 0, unknown unconditional: 1671] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 155, Positive conditional cache size: 0, Positive unconditional cache size: 155, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 198 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.3s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 868 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 645 mSDsluCounter, 228 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 124 mSDsCounter, 113 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1624 IncrementalHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 113 mSolverCounterUnsat, 104 mSDtfsCounter, 1624 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=861occurred in iteration=4, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 257 ConstructedInterpolants, 0 QuantifiedInterpolants, 669 SizeOfPredicates, 4 NumberOfNonLiveVariables, 508 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 28/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 08:40:44,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE