./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/weaver/array-eq-trans.wvr.c -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 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 10:47:15,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:47:15,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:47:15,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:47:15,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:47:15,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:47:15,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:47:15,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:47:15,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:47:15,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:47:15,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:47:15,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:47:15,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:47:15,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:47:15,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:47:15,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:47:15,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:47:15,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:47:15,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:47:15,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:47:15,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:47:15,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:47:15,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:47:15,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:47:15,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:47:15,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:47:15,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:47:15,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:47:15,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:47:15,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:47:15,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:47:15,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:47:15,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:47:15,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:47:15,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:47:15,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:47:15,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:47:15,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:47:15,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:47:15,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:47:15,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:47:15,850 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:47:15,887 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:47:15,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:47:15,888 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:47:15,888 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:47:15,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:47:15,889 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:47:15,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:47:15,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:47:15,890 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:47:15,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:47:15,891 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:47:15,891 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:47:15,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:47:15,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:47:15,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:47:15,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:47:15,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:47:15,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:47:15,892 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:47:15,892 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:47:15,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:47:15,893 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:47:15,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:47:15,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:47:15,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:47:15,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:47:15,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:47:15,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:47:15,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:47:15,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:47:15,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:47:15,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:47:15,895 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:47:15,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:47:15,895 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:47:15,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:47:15,896 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:47:15,896 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:47:16,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:47:16,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:47:16,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:47:16,237 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:47:16,238 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:47:16,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2023-08-30 10:47:17,426 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:47:17,610 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:47:17,611 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2023-08-30 10:47:17,619 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2d9dc0b1/5edb2f2b92f04283b5d7e0a9a9be5207/FLAGf42f9fd63 [2023-08-30 10:47:17,631 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2d9dc0b1/5edb2f2b92f04283b5d7e0a9a9be5207 [2023-08-30 10:47:17,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:47:17,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:47:17,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:47:17,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:47:17,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:47:17,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:47:17" (1/1) ... [2023-08-30 10:47:17,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c18b3f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:17, skipping insertion in model container [2023-08-30 10:47:17,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:47:17" (1/1) ... [2023-08-30 10:47:17,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:47:17,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:47:17,836 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c[2737,2750] [2023-08-30 10:47:17,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:47:17,850 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:47:17,870 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c[2737,2750] [2023-08-30 10:47:17,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:47:17,887 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:47:17,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:17 WrapperNode [2023-08-30 10:47:17,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:47:17,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:47:17,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:47:17,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:47:17,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:17" (1/1) ... [2023-08-30 10:47:17,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:17" (1/1) ... [2023-08-30 10:47:17,923 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 216 [2023-08-30 10:47:17,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:47:17,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:47:17,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:47:17,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:47:17,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:17" (1/1) ... [2023-08-30 10:47:17,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:17" (1/1) ... [2023-08-30 10:47:17,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:17" (1/1) ... [2023-08-30 10:47:17,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:17" (1/1) ... [2023-08-30 10:47:17,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:17" (1/1) ... [2023-08-30 10:47:17,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:17" (1/1) ... [2023-08-30 10:47:17,950 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:17" (1/1) ... [2023-08-30 10:47:17,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:17" (1/1) ... [2023-08-30 10:47:17,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:47:17,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:47:17,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:47:17,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:47:17,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:17" (1/1) ... [2023-08-30 10:47:17,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:47:17,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:47:18,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 10:47:18,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 10:47:18,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:47:18,054 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 10:47:18,054 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 10:47:18,055 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 10:47:18,055 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 10:47:18,055 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 10:47:18,056 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 10:47:18,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:47:18,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:47:18,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:47:18,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 10:47:18,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:47:18,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:47:18,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:47:18,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:47:18,058 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 10:47:18,217 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:47:18,218 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:47:18,633 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:47:18,643 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:47:18,643 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 10:47:18,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:47:18 BoogieIcfgContainer [2023-08-30 10:47:18,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:47:18,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:47:18,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:47:18,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:47:18,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:47:17" (1/3) ... [2023-08-30 10:47:18,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1059de85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:47:18, skipping insertion in model container [2023-08-30 10:47:18,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:17" (2/3) ... [2023-08-30 10:47:18,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1059de85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:47:18, skipping insertion in model container [2023-08-30 10:47:18,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:47:18" (3/3) ... [2023-08-30 10:47:18,652 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2023-08-30 10:47:18,659 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:47:18,677 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:47:18,677 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 10:47:18,677 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:47:18,787 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 10:47:18,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 310 transitions, 644 flow [2023-08-30 10:47:18,965 INFO L130 PetriNetUnfolder]: 30/307 cut-off events. [2023-08-30 10:47:18,965 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:47:18,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 307 events. 30/307 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 328 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 209. Up to 3 conditions per place. [2023-08-30 10:47:18,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 290 places, 310 transitions, 644 flow [2023-08-30 10:47:18,981 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 235 transitions, 485 flow [2023-08-30 10:47:18,989 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:47:19,001 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 235 transitions, 485 flow [2023-08-30 10:47:19,008 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 235 transitions, 485 flow [2023-08-30 10:47:19,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 235 transitions, 485 flow [2023-08-30 10:47:19,054 INFO L130 PetriNetUnfolder]: 21/235 cut-off events. [2023-08-30 10:47:19,055 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 10:47:19,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 235 events. 21/235 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 270 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 209. Up to 3 conditions per place. [2023-08-30 10:47:19,060 INFO L119 LiptonReduction]: Number of co-enabled transitions 3840 [2023-08-30 10:47:26,596 INFO L134 LiptonReduction]: Checked pairs total: 5555 [2023-08-30 10:47:26,597 INFO L136 LiptonReduction]: Total number of compositions: 265 [2023-08-30 10:47:26,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:47:26,614 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;@5b4bc8af, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:47:26,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 10:47:26,617 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 10:47:26,617 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:47:26,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:26,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:47:26,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:47:26,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:26,623 INFO L85 PathProgramCache]: Analyzing trace with hash 35310, now seen corresponding path program 1 times [2023-08-30 10:47:26,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:26,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438086293] [2023-08-30 10:47:26,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:26,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:47:26,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:26,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438086293] [2023-08-30 10:47:26,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438086293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:26,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:47:26,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:47:26,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397634168] [2023-08-30 10:47:26,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:26,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:47:26,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:26,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:47:26,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:47:26,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 575 [2023-08-30 10:47:26,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:26,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:26,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 575 [2023-08-30 10:47:26,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:27,289 INFO L130 PetriNetUnfolder]: 1623/2253 cut-off events. [2023-08-30 10:47:27,289 INFO L131 PetriNetUnfolder]: For 132/132 co-relation queries the response was YES. [2023-08-30 10:47:27,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4683 conditions, 2253 events. 1623/2253 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8622 event pairs, 1054 based on Foata normal form. 0/989 useless extension candidates. Maximal degree in co-relation 2004. Up to 1131 conditions per place. [2023-08-30 10:47:27,303 INFO L137 encePairwiseOnDemand]: 563/575 looper letters, 65 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2023-08-30 10:47:27,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 71 transitions, 314 flow [2023-08-30 10:47:27,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:47:27,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:47:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 914 transitions. [2023-08-30 10:47:27,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298550724637681 [2023-08-30 10:47:27,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 914 transitions. [2023-08-30 10:47:27,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 914 transitions. [2023-08-30 10:47:27,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:27,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 914 transitions. [2023-08-30 10:47:27,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:27,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:27,337 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:27,339 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 93 flow. Second operand 3 states and 914 transitions. [2023-08-30 10:47:27,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 71 transitions, 314 flow [2023-08-30 10:47:27,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 71 transitions, 296 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 10:47:27,347 INFO L231 Difference]: Finished difference. Result has 40 places, 44 transitions, 140 flow [2023-08-30 10:47:27,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2023-08-30 10:47:27,352 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-08-30 10:47:27,352 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 140 flow [2023-08-30 10:47:27,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:27,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:27,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:47:27,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:47:27,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:47:27,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:27,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1096113, now seen corresponding path program 1 times [2023-08-30 10:47:27,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:27,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809458915] [2023-08-30 10:47:27,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:27,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:27,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:47:27,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:27,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809458915] [2023-08-30 10:47:27,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809458915] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:47:27,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234152838] [2023-08-30 10:47:27,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:27,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:47:27,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:47:27,489 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:47:27,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 10:47:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:27,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:47:27,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:47:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:47:27,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:47:27,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:47:27,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234152838] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:47:27,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:47:27,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 10:47:27,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391276226] [2023-08-30 10:47:27,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:47:27,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:47:27,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:27,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:47:27,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:47:27,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 575 [2023-08-30 10:47:27,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 140 flow. Second operand has 7 states, 7 states have (on average 280.14285714285717) internal successors, (1961), 7 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:27,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:27,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 575 [2023-08-30 10:47:27,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:28,506 INFO L130 PetriNetUnfolder]: 4065/5631 cut-off events. [2023-08-30 10:47:28,508 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2023-08-30 10:47:28,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11599 conditions, 5631 events. 4065/5631 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 24519 event pairs, 2635 based on Foata normal form. 0/2486 useless extension candidates. Maximal degree in co-relation 9195. Up to 1129 conditions per place. [2023-08-30 10:47:28,543 INFO L137 encePairwiseOnDemand]: 563/575 looper letters, 143 selfloop transitions, 33 changer transitions 0/176 dead transitions. [2023-08-30 10:47:28,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 176 transitions, 840 flow [2023-08-30 10:47:28,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:47:28,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:47:28,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2138 transitions. [2023-08-30 10:47:28,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311801242236025 [2023-08-30 10:47:28,549 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2138 transitions. [2023-08-30 10:47:28,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2138 transitions. [2023-08-30 10:47:28,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:28,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2138 transitions. [2023-08-30 10:47:28,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 305.42857142857144) internal successors, (2138), 7 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:28,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 575.0) internal successors, (4600), 8 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:28,565 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 575.0) internal successors, (4600), 8 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:28,565 INFO L175 Difference]: Start difference. First operand has 40 places, 44 transitions, 140 flow. Second operand 7 states and 2138 transitions. [2023-08-30 10:47:28,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 176 transitions, 840 flow [2023-08-30 10:47:28,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 176 transitions, 816 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:47:28,572 INFO L231 Difference]: Finished difference. Result has 47 places, 68 transitions, 347 flow [2023-08-30 10:47:28,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=347, PETRI_PLACES=47, PETRI_TRANSITIONS=68} [2023-08-30 10:47:28,574 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-08-30 10:47:28,574 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 68 transitions, 347 flow [2023-08-30 10:47:28,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 280.14285714285717) internal successors, (1961), 7 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:28,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:28,576 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 10:47:28,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 10:47:28,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:47:28,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:47:28,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:28,789 INFO L85 PathProgramCache]: Analyzing trace with hash 33980558, now seen corresponding path program 1 times [2023-08-30 10:47:28,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:28,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202552806] [2023-08-30 10:47:28,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:28,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:47:28,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:28,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202552806] [2023-08-30 10:47:28,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202552806] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:28,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:47:28,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:47:28,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565013971] [2023-08-30 10:47:28,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:28,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:47:28,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:28,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:47:28,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:47:28,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 575 [2023-08-30 10:47:28,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 68 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 280.3333333333333) internal successors, (841), 3 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:28,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:28,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 575 [2023-08-30 10:47:28,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:29,374 INFO L130 PetriNetUnfolder]: 4056/5619 cut-off events. [2023-08-30 10:47:29,374 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-30 10:47:29,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11602 conditions, 5619 events. 4056/5619 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 25002 event pairs, 2635 based on Foata normal form. 2/2487 useless extension candidates. Maximal degree in co-relation 6933. Up to 5619 conditions per place. [2023-08-30 10:47:29,413 INFO L137 encePairwiseOnDemand]: 571/575 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 10:47:29,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 378 flow [2023-08-30 10:47:29,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:47:29,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:47:29,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 876 transitions. [2023-08-30 10:47:29,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078260869565218 [2023-08-30 10:47:29,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 876 transitions. [2023-08-30 10:47:29,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 876 transitions. [2023-08-30 10:47:29,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:29,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 876 transitions. [2023-08-30 10:47:29,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:29,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:29,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:29,425 INFO L175 Difference]: Start difference. First operand has 47 places, 68 transitions, 347 flow. Second operand 3 states and 876 transitions. [2023-08-30 10:47:29,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 378 flow [2023-08-30 10:47:29,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 348 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 10:47:29,432 INFO L231 Difference]: Finished difference. Result has 44 places, 56 transitions, 238 flow [2023-08-30 10:47:29,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=44, PETRI_TRANSITIONS=56} [2023-08-30 10:47:29,434 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2023-08-30 10:47:29,434 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 56 transitions, 238 flow [2023-08-30 10:47:29,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.3333333333333) internal successors, (841), 3 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:29,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:29,435 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 10:47:29,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 10:47:29,436 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:47:29,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:29,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1704374468, now seen corresponding path program 2 times [2023-08-30 10:47:29,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:29,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207946717] [2023-08-30 10:47:29,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:29,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:47:29,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:29,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207946717] [2023-08-30 10:47:29,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207946717] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:47:29,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684400599] [2023-08-30 10:47:29,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:47:29,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:47:29,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:47:29,560 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:47:29,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 10:47:29,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:47:29,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:47:29,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:47:29,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:47:29,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:47:29,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:47:29,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684400599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:29,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:47:29,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 10:47:29,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102149292] [2023-08-30 10:47:29,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:29,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:47:29,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:29,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:47:29,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:47:29,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 575 [2023-08-30 10:47:29,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 56 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:29,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:29,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 575 [2023-08-30 10:47:29,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:30,125 INFO L130 PetriNetUnfolder]: 4056/5618 cut-off events. [2023-08-30 10:47:30,126 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-08-30 10:47:30,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11580 conditions, 5618 events. 4056/5618 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 24992 event pairs, 2635 based on Foata normal form. 1/2487 useless extension candidates. Maximal degree in co-relation 11568. Up to 5613 conditions per place. [2023-08-30 10:47:30,155 INFO L137 encePairwiseOnDemand]: 572/575 looper letters, 49 selfloop transitions, 6 changer transitions 0/55 dead transitions. [2023-08-30 10:47:30,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 338 flow [2023-08-30 10:47:30,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:47:30,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:47:30,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 882 transitions. [2023-08-30 10:47:30,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113043478260869 [2023-08-30 10:47:30,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 882 transitions. [2023-08-30 10:47:30,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 882 transitions. [2023-08-30 10:47:30,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:30,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 882 transitions. [2023-08-30 10:47:30,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:30,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:30,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:30,165 INFO L175 Difference]: Start difference. First operand has 44 places, 56 transitions, 238 flow. Second operand 3 states and 882 transitions. [2023-08-30 10:47:30,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 338 flow [2023-08-30 10:47:30,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 337 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:47:30,167 INFO L231 Difference]: Finished difference. Result has 44 places, 55 transitions, 239 flow [2023-08-30 10:47:30,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=239, PETRI_PLACES=44, PETRI_TRANSITIONS=55} [2023-08-30 10:47:30,168 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2023-08-30 10:47:30,169 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 55 transitions, 239 flow [2023-08-30 10:47:30,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:30,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:30,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:30,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 10:47:30,375 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,SelfDestructingSolverStorable3 [2023-08-30 10:47:30,376 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:47:30,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:30,376 INFO L85 PathProgramCache]: Analyzing trace with hash -268262969, now seen corresponding path program 1 times [2023-08-30 10:47:30,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:30,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944042486] [2023-08-30 10:47:30,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:30,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:47:30,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:30,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944042486] [2023-08-30 10:47:30,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944042486] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:30,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:47:30,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:47:30,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426478936] [2023-08-30 10:47:30,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:30,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:47:30,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:30,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:47:30,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:47:30,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 575 [2023-08-30 10:47:30,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 55 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:30,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:30,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 575 [2023-08-30 10:47:30,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:31,177 INFO L130 PetriNetUnfolder]: 6776/9358 cut-off events. [2023-08-30 10:47:31,177 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-08-30 10:47:31,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19231 conditions, 9358 events. 6776/9358 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 47289 event pairs, 1615 based on Foata normal form. 0/4317 useless extension candidates. Maximal degree in co-relation 19218. Up to 5841 conditions per place. [2023-08-30 10:47:31,250 INFO L137 encePairwiseOnDemand]: 571/575 looper letters, 76 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-08-30 10:47:31,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 446 flow [2023-08-30 10:47:31,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:47:31,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:47:31,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 918 transitions. [2023-08-30 10:47:31,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321739130434783 [2023-08-30 10:47:31,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 918 transitions. [2023-08-30 10:47:31,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 918 transitions. [2023-08-30 10:47:31,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:31,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 918 transitions. [2023-08-30 10:47:31,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:31,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:31,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:31,261 INFO L175 Difference]: Start difference. First operand has 44 places, 55 transitions, 239 flow. Second operand 3 states and 918 transitions. [2023-08-30 10:47:31,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 446 flow [2023-08-30 10:47:31,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:47:31,264 INFO L231 Difference]: Finished difference. Result has 45 places, 56 transitions, 241 flow [2023-08-30 10:47:31,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=45, PETRI_TRANSITIONS=56} [2023-08-30 10:47:31,265 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2023-08-30 10:47:31,265 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 56 transitions, 241 flow [2023-08-30 10:47:31,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:31,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:31,266 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 10:47:31,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 10:47:31,266 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:47:31,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:31,267 INFO L85 PathProgramCache]: Analyzing trace with hash -264396176, now seen corresponding path program 1 times [2023-08-30 10:47:31,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:31,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059803976] [2023-08-30 10:47:31,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:31,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:47:31,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:31,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059803976] [2023-08-30 10:47:31,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059803976] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:47:31,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345253691] [2023-08-30 10:47:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:31,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:47:31,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:47:31,373 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:47:31,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 10:47:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:31,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 10:47:31,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:47:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:47:31,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:47:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:47:31,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345253691] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:47:31,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:47:31,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:47:31,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457806120] [2023-08-30 10:47:31,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:47:31,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:47:31,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:31,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:47:31,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:47:31,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 575 [2023-08-30 10:47:31,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 56 transitions, 241 flow. Second operand has 13 states, 13 states have (on average 280.15384615384613) internal successors, (3642), 13 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:31,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:31,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 575 [2023-08-30 10:47:31,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:33,376 INFO L130 PetriNetUnfolder]: 14906/20584 cut-off events. [2023-08-30 10:47:33,377 INFO L131 PetriNetUnfolder]: For 1483/1483 co-relation queries the response was YES. [2023-08-30 10:47:33,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45121 conditions, 20584 events. 14906/20584 cut-off events. For 1483/1483 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 103648 event pairs, 9911 based on Foata normal form. 12/10638 useless extension candidates. Maximal degree in co-relation 45107. Up to 2289 conditions per place. [2023-08-30 10:47:33,648 INFO L137 encePairwiseOnDemand]: 567/575 looper letters, 315 selfloop transitions, 51 changer transitions 0/366 dead transitions. [2023-08-30 10:47:33,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 366 transitions, 1851 flow [2023-08-30 10:47:33,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:47:33,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:47:33,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3715 transitions. [2023-08-30 10:47:33,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384057971014493 [2023-08-30 10:47:33,659 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3715 transitions. [2023-08-30 10:47:33,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3715 transitions. [2023-08-30 10:47:33,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:33,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3715 transitions. [2023-08-30 10:47:33,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 309.5833333333333) internal successors, (3715), 12 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:33,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 575.0) internal successors, (7475), 13 states have internal predecessors, (7475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:33,683 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 575.0) internal successors, (7475), 13 states have internal predecessors, (7475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:33,683 INFO L175 Difference]: Start difference. First operand has 45 places, 56 transitions, 241 flow. Second operand 12 states and 3715 transitions. [2023-08-30 10:47:33,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 366 transitions, 1851 flow [2023-08-30 10:47:33,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 366 transitions, 1839 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:47:33,693 INFO L231 Difference]: Finished difference. Result has 61 places, 86 transitions, 587 flow [2023-08-30 10:47:33,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=587, PETRI_PLACES=61, PETRI_TRANSITIONS=86} [2023-08-30 10:47:33,694 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2023-08-30 10:47:33,694 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 86 transitions, 587 flow [2023-08-30 10:47:33,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 280.15384615384613) internal successors, (3642), 13 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:33,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:33,696 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:33,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 10:47:33,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:47:33,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:47:33,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:33,903 INFO L85 PathProgramCache]: Analyzing trace with hash -102605411, now seen corresponding path program 1 times [2023-08-30 10:47:33,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:33,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920332191] [2023-08-30 10:47:33,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:33,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:47:33,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:33,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920332191] [2023-08-30 10:47:33,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920332191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:33,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:47:33,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:47:33,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893807163] [2023-08-30 10:47:33,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:33,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:47:33,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:33,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:47:33,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:47:33,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 575 [2023-08-30 10:47:33,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 86 transitions, 587 flow. Second operand has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:33,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:33,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 575 [2023-08-30 10:47:33,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:35,157 INFO L130 PetriNetUnfolder]: 13454/18560 cut-off events. [2023-08-30 10:47:35,158 INFO L131 PetriNetUnfolder]: For 1502/1502 co-relation queries the response was YES. [2023-08-30 10:47:35,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39910 conditions, 18560 events. 13454/18560 cut-off events. For 1502/1502 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 93455 event pairs, 8789 based on Foata normal form. 0/9954 useless extension candidates. Maximal degree in co-relation 39889. Up to 18560 conditions per place. [2023-08-30 10:47:35,286 INFO L137 encePairwiseOnDemand]: 573/575 looper letters, 84 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2023-08-30 10:47:35,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 753 flow [2023-08-30 10:47:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:47:35,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:47:35,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 893 transitions. [2023-08-30 10:47:35,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176811594202898 [2023-08-30 10:47:35,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 893 transitions. [2023-08-30 10:47:35,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 893 transitions. [2023-08-30 10:47:35,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:35,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 893 transitions. [2023-08-30 10:47:35,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.6666666666667) internal successors, (893), 3 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:35,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:35,296 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:35,296 INFO L175 Difference]: Start difference. First operand has 61 places, 86 transitions, 587 flow. Second operand 3 states and 893 transitions. [2023-08-30 10:47:35,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 753 flow [2023-08-30 10:47:35,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 85 transitions, 609 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-30 10:47:35,301 INFO L231 Difference]: Finished difference. Result has 57 places, 85 transitions, 441 flow [2023-08-30 10:47:35,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=441, PETRI_PLACES=57, PETRI_TRANSITIONS=85} [2023-08-30 10:47:35,301 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2023-08-30 10:47:35,302 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 85 transitions, 441 flow [2023-08-30 10:47:35,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:35,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:35,302 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:35,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 10:47:35,303 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:47:35,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:35,303 INFO L85 PathProgramCache]: Analyzing trace with hash -102605369, now seen corresponding path program 1 times [2023-08-30 10:47:35,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:35,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782324126] [2023-08-30 10:47:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:35,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:47:35,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:35,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782324126] [2023-08-30 10:47:35,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782324126] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:35,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:47:35,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:47:35,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380588302] [2023-08-30 10:47:35,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:35,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:47:35,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:47:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:47:35,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 575 [2023-08-30 10:47:35,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 85 transitions, 441 flow. Second operand has 4 states, 4 states have (on average 274.25) internal successors, (1097), 4 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:35,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:35,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 575 [2023-08-30 10:47:35,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:36,695 INFO L130 PetriNetUnfolder]: 16116/22577 cut-off events. [2023-08-30 10:47:36,695 INFO L131 PetriNetUnfolder]: For 1695/1695 co-relation queries the response was YES. [2023-08-30 10:47:36,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48210 conditions, 22577 events. 16116/22577 cut-off events. For 1695/1695 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 120886 event pairs, 10604 based on Foata normal form. 0/12300 useless extension candidates. Maximal degree in co-relation 48189. Up to 18559 conditions per place. [2023-08-30 10:47:36,813 INFO L137 encePairwiseOnDemand]: 570/575 looper letters, 138 selfloop transitions, 3 changer transitions 0/141 dead transitions. [2023-08-30 10:47:36,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 141 transitions, 1008 flow [2023-08-30 10:47:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:47:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:47:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1152 transitions. [2023-08-30 10:47:36,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008695652173913 [2023-08-30 10:47:36,817 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1152 transitions. [2023-08-30 10:47:36,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1152 transitions. [2023-08-30 10:47:36,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:36,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1152 transitions. [2023-08-30 10:47:36,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:36,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:36,824 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:36,825 INFO L175 Difference]: Start difference. First operand has 57 places, 85 transitions, 441 flow. Second operand 4 states and 1152 transitions. [2023-08-30 10:47:36,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 141 transitions, 1008 flow [2023-08-30 10:47:36,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 141 transitions, 1007 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:47:36,830 INFO L231 Difference]: Finished difference. Result has 60 places, 85 transitions, 451 flow [2023-08-30 10:47:36,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=451, PETRI_PLACES=60, PETRI_TRANSITIONS=85} [2023-08-30 10:47:36,830 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2023-08-30 10:47:36,831 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 85 transitions, 451 flow [2023-08-30 10:47:36,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 274.25) internal successors, (1097), 4 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:36,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:36,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:36,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 10:47:36,832 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:47:36,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:36,833 INFO L85 PathProgramCache]: Analyzing trace with hash -98991969, now seen corresponding path program 1 times [2023-08-30 10:47:36,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:36,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795229934] [2023-08-30 10:47:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:36,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:47:36,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:36,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795229934] [2023-08-30 10:47:36,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795229934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:36,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:47:36,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:47:36,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145267630] [2023-08-30 10:47:36,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:36,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:47:36,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:36,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:47:36,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:47:36,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 575 [2023-08-30 10:47:36,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 85 transitions, 451 flow. Second operand has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:36,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:36,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 575 [2023-08-30 10:47:36,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:39,183 INFO L130 PetriNetUnfolder]: 27380/37647 cut-off events. [2023-08-30 10:47:39,183 INFO L131 PetriNetUnfolder]: For 5721/5721 co-relation queries the response was YES. [2023-08-30 10:47:39,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83414 conditions, 37647 events. 27380/37647 cut-off events. For 5721/5721 co-relation queries the response was YES. Maximal size of possible extension queue 979. Compared 213624 event pairs, 8316 based on Foata normal form. 0/23938 useless extension candidates. Maximal degree in co-relation 83391. Up to 19141 conditions per place. [2023-08-30 10:47:39,489 INFO L137 encePairwiseOnDemand]: 571/575 looper letters, 104 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2023-08-30 10:47:39,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 107 transitions, 723 flow [2023-08-30 10:47:39,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:47:39,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:47:39,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 914 transitions. [2023-08-30 10:47:39,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298550724637681 [2023-08-30 10:47:39,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 914 transitions. [2023-08-30 10:47:39,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 914 transitions. [2023-08-30 10:47:39,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:39,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 914 transitions. [2023-08-30 10:47:39,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:39,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:39,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:39,497 INFO L175 Difference]: Start difference. First operand has 60 places, 85 transitions, 451 flow. Second operand 3 states and 914 transitions. [2023-08-30 10:47:39,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 107 transitions, 723 flow [2023-08-30 10:47:39,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 107 transitions, 717 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 10:47:39,503 INFO L231 Difference]: Finished difference. Result has 63 places, 87 transitions, 467 flow [2023-08-30 10:47:39,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=467, PETRI_PLACES=63, PETRI_TRANSITIONS=87} [2023-08-30 10:47:39,504 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2023-08-30 10:47:39,505 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 87 transitions, 467 flow [2023-08-30 10:47:39,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:39,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:39,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:39,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 10:47:39,506 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:47:39,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:39,506 INFO L85 PathProgramCache]: Analyzing trace with hash -98991971, now seen corresponding path program 1 times [2023-08-30 10:47:39,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:39,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933718408] [2023-08-30 10:47:39,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:39,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:47:39,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:39,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933718408] [2023-08-30 10:47:39,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933718408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:39,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:47:39,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:47:39,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082564896] [2023-08-30 10:47:39,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:39,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:47:39,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:39,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:47:39,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:47:39,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 575 [2023-08-30 10:47:39,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 87 transitions, 467 flow. Second operand has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:39,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:39,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 575 [2023-08-30 10:47:39,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:41,520 INFO L130 PetriNetUnfolder]: 23310/32389 cut-off events. [2023-08-30 10:47:41,520 INFO L131 PetriNetUnfolder]: For 13324/13324 co-relation queries the response was YES. [2023-08-30 10:47:41,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76704 conditions, 32389 events. 23310/32389 cut-off events. For 13324/13324 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 179224 event pairs, 15356 based on Foata normal form. 2376/26446 useless extension candidates. Maximal degree in co-relation 76678. Up to 32389 conditions per place. [2023-08-30 10:47:41,695 INFO L137 encePairwiseOnDemand]: 573/575 looper letters, 84 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2023-08-30 10:47:41,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 85 transitions, 627 flow [2023-08-30 10:47:41,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:47:41,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:47:41,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 892 transitions. [2023-08-30 10:47:41,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171014492753623 [2023-08-30 10:47:41,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 892 transitions. [2023-08-30 10:47:41,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 892 transitions. [2023-08-30 10:47:41,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:41,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 892 transitions. [2023-08-30 10:47:41,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:41,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:41,703 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:41,703 INFO L175 Difference]: Start difference. First operand has 63 places, 87 transitions, 467 flow. Second operand 3 states and 892 transitions. [2023-08-30 10:47:41,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 85 transitions, 627 flow [2023-08-30 10:47:41,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 623 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:47:41,712 INFO L231 Difference]: Finished difference. Result has 62 places, 85 transitions, 455 flow [2023-08-30 10:47:41,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=455, PETRI_PLACES=62, PETRI_TRANSITIONS=85} [2023-08-30 10:47:41,713 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2023-08-30 10:47:41,713 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 85 transitions, 455 flow [2023-08-30 10:47:41,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:41,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:41,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:41,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 10:47:41,714 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:47:41,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:41,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1226329833, now seen corresponding path program 1 times [2023-08-30 10:47:41,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:41,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665299672] [2023-08-30 10:47:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:41,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:41,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:47:41,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:41,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665299672] [2023-08-30 10:47:41,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665299672] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:41,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:47:41,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:47:41,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36697709] [2023-08-30 10:47:41,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:41,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:47:41,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:41,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:47:41,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:47:41,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 575 [2023-08-30 10:47:41,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 85 transitions, 455 flow. Second operand has 3 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:41,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:41,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 575 [2023-08-30 10:47:41,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:44,286 INFO L130 PetriNetUnfolder]: 33716/46755 cut-off events. [2023-08-30 10:47:44,286 INFO L131 PetriNetUnfolder]: For 9650/9650 co-relation queries the response was YES. [2023-08-30 10:47:44,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107372 conditions, 46755 events. 33716/46755 cut-off events. For 9650/9650 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 274876 event pairs, 8360 based on Foata normal form. 1474/36038 useless extension candidates. Maximal degree in co-relation 107346. Up to 29107 conditions per place. [2023-08-30 10:47:44,629 INFO L137 encePairwiseOnDemand]: 571/575 looper letters, 102 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-08-30 10:47:44,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 104 transitions, 717 flow [2023-08-30 10:47:44,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:47:44,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:47:44,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 910 transitions. [2023-08-30 10:47:44,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527536231884058 [2023-08-30 10:47:44,632 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 910 transitions. [2023-08-30 10:47:44,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 910 transitions. [2023-08-30 10:47:44,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:44,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 910 transitions. [2023-08-30 10:47:44,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:44,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:44,637 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:44,637 INFO L175 Difference]: Start difference. First operand has 62 places, 85 transitions, 455 flow. Second operand 3 states and 910 transitions. [2023-08-30 10:47:44,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 104 transitions, 717 flow [2023-08-30 10:47:44,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 104 transitions, 716 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:47:44,643 INFO L231 Difference]: Finished difference. Result has 64 places, 86 transitions, 468 flow [2023-08-30 10:47:44,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=64, PETRI_TRANSITIONS=86} [2023-08-30 10:47:44,644 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-08-30 10:47:44,644 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 86 transitions, 468 flow [2023-08-30 10:47:44,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:44,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:44,645 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:44,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 10:47:44,645 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:47:44,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:44,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1857812366, now seen corresponding path program 1 times [2023-08-30 10:47:44,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:44,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993413989] [2023-08-30 10:47:44,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:44,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:44,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:47:44,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:44,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993413989] [2023-08-30 10:47:44,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993413989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:44,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:47:44,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:47:44,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752693490] [2023-08-30 10:47:44,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:44,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:47:44,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:44,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:47:44,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:47:44,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 575 [2023-08-30 10:47:44,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 86 transitions, 468 flow. Second operand has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:44,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:44,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 575 [2023-08-30 10:47:44,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:49,444 INFO L130 PetriNetUnfolder]: 46982/66337 cut-off events. [2023-08-30 10:47:49,444 INFO L131 PetriNetUnfolder]: For 17202/17202 co-relation queries the response was YES. [2023-08-30 10:47:49,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164180 conditions, 66337 events. 46982/66337 cut-off events. For 17202/17202 co-relation queries the response was YES. Maximal size of possible extension queue 1742. Compared 424231 event pairs, 21956 based on Foata normal form. 1100/55752 useless extension candidates. Maximal degree in co-relation 164152. Up to 24786 conditions per place. [2023-08-30 10:47:49,890 INFO L137 encePairwiseOnDemand]: 568/575 looper letters, 151 selfloop transitions, 16 changer transitions 0/167 dead transitions. [2023-08-30 10:47:49,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 167 transitions, 1097 flow [2023-08-30 10:47:49,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:47:49,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:47:49,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1730 transitions. [2023-08-30 10:47:49,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014492753623189 [2023-08-30 10:47:49,894 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1730 transitions. [2023-08-30 10:47:49,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1730 transitions. [2023-08-30 10:47:49,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:49,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1730 transitions. [2023-08-30 10:47:49,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 288.3333333333333) internal successors, (1730), 6 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:49,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:49,903 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:49,903 INFO L175 Difference]: Start difference. First operand has 64 places, 86 transitions, 468 flow. Second operand 6 states and 1730 transitions. [2023-08-30 10:47:49,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 167 transitions, 1097 flow [2023-08-30 10:47:49,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 167 transitions, 1092 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:47:49,910 INFO L231 Difference]: Finished difference. Result has 70 places, 87 transitions, 513 flow [2023-08-30 10:47:49,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=513, PETRI_PLACES=70, PETRI_TRANSITIONS=87} [2023-08-30 10:47:49,913 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2023-08-30 10:47:49,913 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 87 transitions, 513 flow [2023-08-30 10:47:49,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:49,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:49,914 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:49,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 10:47:49,914 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:47:49,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:49,914 INFO L85 PathProgramCache]: Analyzing trace with hash -641973861, now seen corresponding path program 1 times [2023-08-30 10:47:49,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:49,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576937963] [2023-08-30 10:47:49,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:49,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:49,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:47:49,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:49,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576937963] [2023-08-30 10:47:49,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576937963] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:49,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:47:49,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:47:49,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611852315] [2023-08-30 10:47:49,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:49,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:47:49,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:49,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:47:49,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:47:50,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 575 [2023-08-30 10:47:50,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 87 transitions, 513 flow. Second operand has 5 states, 5 states have (on average 273.2) internal successors, (1366), 5 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:50,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:50,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 575 [2023-08-30 10:47:50,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:53,790 INFO L130 PetriNetUnfolder]: 36378/51421 cut-off events. [2023-08-30 10:47:53,790 INFO L131 PetriNetUnfolder]: For 25619/25619 co-relation queries the response was YES. [2023-08-30 10:47:54,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131182 conditions, 51421 events. 36378/51421 cut-off events. For 25619/25619 co-relation queries the response was YES. Maximal size of possible extension queue 1384. Compared 314436 event pairs, 25608 based on Foata normal form. 0/42883 useless extension candidates. Maximal degree in co-relation 131151. Up to 46742 conditions per place. [2023-08-30 10:47:54,312 INFO L137 encePairwiseOnDemand]: 569/575 looper letters, 117 selfloop transitions, 15 changer transitions 2/134 dead transitions. [2023-08-30 10:47:54,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 134 transitions, 966 flow [2023-08-30 10:47:54,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:47:54,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:47:54,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1700 transitions. [2023-08-30 10:47:54,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2023-08-30 10:47:54,316 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1700 transitions. [2023-08-30 10:47:54,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1700 transitions. [2023-08-30 10:47:54,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:54,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1700 transitions. [2023-08-30 10:47:54,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:54,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:54,325 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:54,325 INFO L175 Difference]: Start difference. First operand has 70 places, 87 transitions, 513 flow. Second operand 6 states and 1700 transitions. [2023-08-30 10:47:54,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 134 transitions, 966 flow [2023-08-30 10:47:54,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 134 transitions, 958 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 10:47:54,338 INFO L231 Difference]: Finished difference. Result has 75 places, 87 transitions, 542 flow [2023-08-30 10:47:54,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=542, PETRI_PLACES=75, PETRI_TRANSITIONS=87} [2023-08-30 10:47:54,339 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2023-08-30 10:47:54,339 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 87 transitions, 542 flow [2023-08-30 10:47:54,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.2) internal successors, (1366), 5 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:54,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:54,340 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:54,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 10:47:54,340 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:47:54,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:54,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1947325234, now seen corresponding path program 1 times [2023-08-30 10:47:54,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:54,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868413789] [2023-08-30 10:47:54,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:54,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:47:54,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:54,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868413789] [2023-08-30 10:47:54,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868413789] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:47:54,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247478521] [2023-08-30 10:47:54,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:54,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:47:54,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:47:54,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:47:54,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 10:47:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:54,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 10:47:54,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:47:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:47:54,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:47:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:47:54,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247478521] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:47:54,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:47:54,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-08-30 10:47:54,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616144450] [2023-08-30 10:47:54,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:47:54,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 10:47:54,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:54,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 10:47:54,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-30 10:47:55,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 575 [2023-08-30 10:47:55,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 87 transitions, 542 flow. Second operand has 15 states, 15 states have (on average 264.93333333333334) internal successors, (3974), 15 states have internal predecessors, (3974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:55,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:55,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 575 [2023-08-30 10:47:55,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:48:06,612 INFO L130 PetriNetUnfolder]: 98528/139790 cut-off events. [2023-08-30 10:48:06,612 INFO L131 PetriNetUnfolder]: For 103682/103682 co-relation queries the response was YES. [2023-08-30 10:48:07,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368791 conditions, 139790 events. 98528/139790 cut-off events. For 103682/103682 co-relation queries the response was YES. Maximal size of possible extension queue 3486. Compared 986911 event pairs, 52371 based on Foata normal form. 4774/131999 useless extension candidates. Maximal degree in co-relation 368758. Up to 37726 conditions per place. [2023-08-30 10:48:07,966 INFO L137 encePairwiseOnDemand]: 564/575 looper letters, 517 selfloop transitions, 41 changer transitions 9/567 dead transitions. [2023-08-30 10:48:07,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 567 transitions, 3715 flow [2023-08-30 10:48:07,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-30 10:48:07,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-30 10:48:07,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 8552 transitions. [2023-08-30 10:48:07,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797755960729313 [2023-08-30 10:48:07,984 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 8552 transitions. [2023-08-30 10:48:07,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 8552 transitions. [2023-08-30 10:48:07,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:48:07,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 8552 transitions. [2023-08-30 10:48:08,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 275.8709677419355) internal successors, (8552), 31 states have internal predecessors, (8552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:08,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 575.0) internal successors, (18400), 32 states have internal predecessors, (18400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:08,028 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 575.0) internal successors, (18400), 32 states have internal predecessors, (18400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:08,029 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 542 flow. Second operand 31 states and 8552 transitions. [2023-08-30 10:48:08,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 567 transitions, 3715 flow [2023-08-30 10:48:08,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 567 transitions, 3676 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 10:48:08,093 INFO L231 Difference]: Finished difference. Result has 113 places, 108 transitions, 873 flow [2023-08-30 10:48:08,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=873, PETRI_PLACES=113, PETRI_TRANSITIONS=108} [2023-08-30 10:48:08,094 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2023-08-30 10:48:08,094 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 108 transitions, 873 flow [2023-08-30 10:48:08,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 264.93333333333334) internal successors, (3974), 15 states have internal predecessors, (3974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:08,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:48:08,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:48:08,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 10:48:08,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:48:08,301 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:48:08,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:48:08,302 INFO L85 PathProgramCache]: Analyzing trace with hash -638479733, now seen corresponding path program 1 times [2023-08-30 10:48:08,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:48:08,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156655092] [2023-08-30 10:48:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:48:08,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:48:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:48:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:48:08,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:48:08,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156655092] [2023-08-30 10:48:08,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156655092] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:48:08,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873824941] [2023-08-30 10:48:08,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:48:08,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:48:08,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:48:08,441 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:48:08,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 10:48:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:48:08,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:48:08,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:48:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:48:08,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:48:08,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873824941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:48:08,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:48:08,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-08-30 10:48:08,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145676969] [2023-08-30 10:48:08,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:48:08,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:48:08,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:48:08,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:48:08,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:48:08,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 575 [2023-08-30 10:48:08,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 108 transitions, 873 flow. Second operand has 4 states, 4 states have (on average 274.75) internal successors, (1099), 4 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:08,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:48:08,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 575 [2023-08-30 10:48:08,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:48:20,017 INFO L130 PetriNetUnfolder]: 90102/127866 cut-off events. [2023-08-30 10:48:20,017 INFO L131 PetriNetUnfolder]: For 252637/252637 co-relation queries the response was YES. [2023-08-30 10:48:20,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379350 conditions, 127866 events. 90102/127866 cut-off events. For 252637/252637 co-relation queries the response was YES. Maximal size of possible extension queue 3232. Compared 887417 event pairs, 64625 based on Foata normal form. 1166/118029 useless extension candidates. Maximal degree in co-relation 379305. Up to 119644 conditions per place. [2023-08-30 10:48:21,283 INFO L137 encePairwiseOnDemand]: 568/575 looper letters, 152 selfloop transitions, 16 changer transitions 8/176 dead transitions. [2023-08-30 10:48:21,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 176 transitions, 1540 flow [2023-08-30 10:48:21,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:48:21,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:48:21,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1441 transitions. [2023-08-30 10:48:21,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012173913043478 [2023-08-30 10:48:21,286 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1441 transitions. [2023-08-30 10:48:21,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1441 transitions. [2023-08-30 10:48:21,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:48:21,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1441 transitions. [2023-08-30 10:48:21,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 288.2) internal successors, (1441), 5 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:21,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 575.0) internal successors, (3450), 6 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:21,291 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 575.0) internal successors, (3450), 6 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:21,291 INFO L175 Difference]: Start difference. First operand has 113 places, 108 transitions, 873 flow. Second operand 5 states and 1441 transitions. [2023-08-30 10:48:21,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 176 transitions, 1540 flow [2023-08-30 10:48:22,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 176 transitions, 1505 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-30 10:48:22,890 INFO L231 Difference]: Finished difference. Result has 115 places, 118 transitions, 982 flow [2023-08-30 10:48:22,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=982, PETRI_PLACES=115, PETRI_TRANSITIONS=118} [2023-08-30 10:48:22,891 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 74 predicate places. [2023-08-30 10:48:22,891 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 118 transitions, 982 flow [2023-08-30 10:48:22,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 274.75) internal successors, (1099), 4 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:22,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:48:22,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:48:22,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 10:48:23,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 10:48:23,098 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:48:23,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:48:23,098 INFO L85 PathProgramCache]: Analyzing trace with hash 529743478, now seen corresponding path program 1 times [2023-08-30 10:48:23,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:48:23,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230319314] [2023-08-30 10:48:23,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:48:23,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:48:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:48:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:48:23,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:48:23,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230319314] [2023-08-30 10:48:23,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230319314] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:48:23,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:48:23,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:48:23,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809534903] [2023-08-30 10:48:23,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:48:23,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:48:23,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:48:23,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:48:23,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:48:23,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 575 [2023-08-30 10:48:23,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 118 transitions, 982 flow. Second operand has 5 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:23,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:48:23,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 575 [2023-08-30 10:48:23,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:48:34,155 INFO L130 PetriNetUnfolder]: 85120/121098 cut-off events. [2023-08-30 10:48:34,156 INFO L131 PetriNetUnfolder]: For 236041/236041 co-relation queries the response was YES. [2023-08-30 10:48:35,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367920 conditions, 121098 events. 85120/121098 cut-off events. For 236041/236041 co-relation queries the response was YES. Maximal size of possible extension queue 3143. Compared 857695 event pairs, 25883 based on Foata normal form. 480/111338 useless extension candidates. Maximal degree in co-relation 367873. Up to 67681 conditions per place. [2023-08-30 10:48:35,409 INFO L137 encePairwiseOnDemand]: 570/575 looper letters, 132 selfloop transitions, 32 changer transitions 2/166 dead transitions. [2023-08-30 10:48:35,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 166 transitions, 1512 flow [2023-08-30 10:48:35,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:48:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:48:35,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1429 transitions. [2023-08-30 10:48:35,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4970434782608696 [2023-08-30 10:48:35,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1429 transitions. [2023-08-30 10:48:35,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1429 transitions. [2023-08-30 10:48:35,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:48:35,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1429 transitions. [2023-08-30 10:48:35,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.8) internal successors, (1429), 5 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:35,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 575.0) internal successors, (3450), 6 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:35,417 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 575.0) internal successors, (3450), 6 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:35,417 INFO L175 Difference]: Start difference. First operand has 115 places, 118 transitions, 982 flow. Second operand 5 states and 1429 transitions. [2023-08-30 10:48:35,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 166 transitions, 1512 flow [2023-08-30 10:48:40,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 166 transitions, 1503 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 10:48:40,902 INFO L231 Difference]: Finished difference. Result has 117 places, 119 transitions, 1071 flow [2023-08-30 10:48:40,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1071, PETRI_PLACES=117, PETRI_TRANSITIONS=119} [2023-08-30 10:48:40,903 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 76 predicate places. [2023-08-30 10:48:40,903 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 119 transitions, 1071 flow [2023-08-30 10:48:40,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:40,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:48:40,903 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:48:40,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 10:48:40,904 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:48:40,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:48:40,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1451452051, now seen corresponding path program 1 times [2023-08-30 10:48:40,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:48:40,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696288083] [2023-08-30 10:48:40,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:48:40,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:48:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:48:41,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:48:41,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:48:41,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696288083] [2023-08-30 10:48:41,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696288083] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:48:41,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:48:41,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:48:41,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953396999] [2023-08-30 10:48:41,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:48:41,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:48:41,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:48:41,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:48:41,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:48:41,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 575 [2023-08-30 10:48:41,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 119 transitions, 1071 flow. Second operand has 5 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:41,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:48:41,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 575 [2023-08-30 10:48:41,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:48:51,879 INFO L130 PetriNetUnfolder]: 82652/117610 cut-off events. [2023-08-30 10:48:51,879 INFO L131 PetriNetUnfolder]: For 249567/249567 co-relation queries the response was YES. [2023-08-30 10:48:52,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359549 conditions, 117610 events. 82652/117610 cut-off events. For 249567/249567 co-relation queries the response was YES. Maximal size of possible extension queue 3123. Compared 818074 event pairs, 59403 based on Foata normal form. 196/107792 useless extension candidates. Maximal degree in co-relation 359502. Up to 116227 conditions per place. [2023-08-30 10:48:53,139 INFO L137 encePairwiseOnDemand]: 570/575 looper letters, 100 selfloop transitions, 31 changer transitions 9/140 dead transitions. [2023-08-30 10:48:53,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 140 transitions, 1436 flow [2023-08-30 10:48:53,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:48:53,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:48:53,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1408 transitions. [2023-08-30 10:48:53,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897391304347826 [2023-08-30 10:48:53,142 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1408 transitions. [2023-08-30 10:48:53,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1408 transitions. [2023-08-30 10:48:53,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:48:53,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1408 transitions. [2023-08-30 10:48:53,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 281.6) internal successors, (1408), 5 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:53,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 575.0) internal successors, (3450), 6 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:53,146 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 575.0) internal successors, (3450), 6 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:53,146 INFO L175 Difference]: Start difference. First operand has 117 places, 119 transitions, 1071 flow. Second operand 5 states and 1408 transitions. [2023-08-30 10:48:53,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 140 transitions, 1436 flow [2023-08-30 10:48:54,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 140 transitions, 1381 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 10:48:54,375 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 1081 flow [2023-08-30 10:48:54,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1081, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2023-08-30 10:48:54,377 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 78 predicate places. [2023-08-30 10:48:54,378 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 1081 flow [2023-08-30 10:48:54,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:54,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:48:54,378 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:48:54,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 10:48:54,379 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:48:54,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:48:54,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1427924327, now seen corresponding path program 2 times [2023-08-30 10:48:54,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:48:54,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369452627] [2023-08-30 10:48:54,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:48:54,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:48:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:48:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:48:54,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:48:54,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369452627] [2023-08-30 10:48:54,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369452627] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:48:54,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109152774] [2023-08-30 10:48:54,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:48:54,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:48:54,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:48:54,445 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:48:54,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 10:48:54,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:48:54,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:48:54,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:48:54,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:48:54,567 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 10:48:54,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:48:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 10:48:54,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109152774] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:48:54,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:48:54,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 10:48:54,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830107713] [2023-08-30 10:48:54,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:48:54,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:48:54,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:48:54,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:48:54,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:48:54,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 575 [2023-08-30 10:48:54,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 1081 flow. Second operand has 6 states, 6 states have (on average 286.6666666666667) internal successors, (1720), 6 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:48:54,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:48:54,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 575 [2023-08-30 10:48:54,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:49:07,641 INFO L130 PetriNetUnfolder]: 98806/140004 cut-off events. [2023-08-30 10:49:07,641 INFO L131 PetriNetUnfolder]: For 325190/325190 co-relation queries the response was YES. [2023-08-30 10:49:08,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438047 conditions, 140004 events. 98806/140004 cut-off events. For 325190/325190 co-relation queries the response was YES. Maximal size of possible extension queue 3430. Compared 979147 event pairs, 32403 based on Foata normal form. 0/129284 useless extension candidates. Maximal degree in co-relation 438000. Up to 65674 conditions per place. [2023-08-30 10:49:09,245 INFO L137 encePairwiseOnDemand]: 571/575 looper letters, 178 selfloop transitions, 8 changer transitions 1/187 dead transitions. [2023-08-30 10:49:09,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 187 transitions, 1744 flow [2023-08-30 10:49:09,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:49:09,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:49:09,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1796 transitions. [2023-08-30 10:49:09,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205797101449275 [2023-08-30 10:49:09,247 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1796 transitions. [2023-08-30 10:49:09,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1796 transitions. [2023-08-30 10:49:09,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:49:09,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1796 transitions. [2023-08-30 10:49:09,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 299.3333333333333) internal successors, (1796), 6 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:09,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:09,252 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:09,252 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 1081 flow. Second operand 6 states and 1796 transitions. [2023-08-30 10:49:09,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 187 transitions, 1744 flow [2023-08-30 10:49:10,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 187 transitions, 1683 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:49:10,508 INFO L231 Difference]: Finished difference. Result has 121 places, 119 transitions, 1047 flow [2023-08-30 10:49:10,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1047, PETRI_PLACES=121, PETRI_TRANSITIONS=119} [2023-08-30 10:49:10,509 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2023-08-30 10:49:10,509 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 119 transitions, 1047 flow [2023-08-30 10:49:10,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 286.6666666666667) internal successors, (1720), 6 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:10,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:49:10,510 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-30 10:49:10,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 10:49:10,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 10:49:10,716 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:49:10,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:49:10,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1987002672, now seen corresponding path program 2 times [2023-08-30 10:49:10,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:49:10,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379709390] [2023-08-30 10:49:10,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:49:10,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:49:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:49:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:49:10,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:49:10,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379709390] [2023-08-30 10:49:10,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379709390] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:49:10,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734747553] [2023-08-30 10:49:10,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:49:10,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:49:10,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:49:10,893 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:49:10,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 10:49:11,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:49:11,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:49:11,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:49:11,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:49:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:49:11,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:49:11,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734747553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:49:11,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:49:11,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-30 10:49:11,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642990723] [2023-08-30 10:49:11,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:49:11,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:49:11,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:49:11,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:49:11,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-30 10:49:11,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 575 [2023-08-30 10:49:11,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 119 transitions, 1047 flow. Second operand has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:11,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:49:11,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 575 [2023-08-30 10:49:11,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:49:24,953 INFO L130 PetriNetUnfolder]: 97955/138457 cut-off events. [2023-08-30 10:49:24,953 INFO L131 PetriNetUnfolder]: For 373286/373286 co-relation queries the response was YES. [2023-08-30 10:49:26,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447344 conditions, 138457 events. 97955/138457 cut-off events. For 373286/373286 co-relation queries the response was YES. Maximal size of possible extension queue 3405. Compared 967850 event pairs, 70470 based on Foata normal form. 3/127740 useless extension candidates. Maximal degree in co-relation 447296. Up to 138401 conditions per place. [2023-08-30 10:49:26,971 INFO L137 encePairwiseOnDemand]: 572/575 looper letters, 91 selfloop transitions, 25 changer transitions 0/116 dead transitions. [2023-08-30 10:49:26,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 116 transitions, 1204 flow [2023-08-30 10:49:26,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:49:26,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:49:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1152 transitions. [2023-08-30 10:49:26,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008695652173913 [2023-08-30 10:49:26,973 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1152 transitions. [2023-08-30 10:49:26,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1152 transitions. [2023-08-30 10:49:26,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:49:26,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1152 transitions. [2023-08-30 10:49:26,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:26,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:26,975 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:26,975 INFO L175 Difference]: Start difference. First operand has 121 places, 119 transitions, 1047 flow. Second operand 4 states and 1152 transitions. [2023-08-30 10:49:26,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 116 transitions, 1204 flow [2023-08-30 10:49:28,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 116 transitions, 1165 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-08-30 10:49:28,137 INFO L231 Difference]: Finished difference. Result has 116 places, 116 transitions, 983 flow [2023-08-30 10:49:28,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=983, PETRI_PLACES=116, PETRI_TRANSITIONS=116} [2023-08-30 10:49:28,137 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2023-08-30 10:49:28,137 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 116 transitions, 983 flow [2023-08-30 10:49:28,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:28,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:49:28,138 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:49:28,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 10:49:28,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:49:28,339 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:49:28,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:49:28,339 INFO L85 PathProgramCache]: Analyzing trace with hash 941464443, now seen corresponding path program 1 times [2023-08-30 10:49:28,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:49:28,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741200043] [2023-08-30 10:49:28,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:49:28,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:49:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:49:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:49:28,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:49:28,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741200043] [2023-08-30 10:49:28,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741200043] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:49:28,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977504527] [2023-08-30 10:49:28,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:49:28,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:49:28,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:49:28,437 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:49:28,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 10:49:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:49:28,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 10:49:28,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:49:28,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:49:28,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:49:28,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:49:28,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977504527] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:49:28,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:49:28,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-30 10:49:28,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292210781] [2023-08-30 10:49:28,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:49:28,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 10:49:28,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:49:28,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 10:49:28,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-08-30 10:49:29,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 575 [2023-08-30 10:49:29,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 116 transitions, 983 flow. Second operand has 16 states, 16 states have (on average 265.125) internal successors, (4242), 16 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:29,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:49:29,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 575 [2023-08-30 10:49:29,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:49:39,847 INFO L130 PetriNetUnfolder]: 82459/118107 cut-off events. [2023-08-30 10:49:39,848 INFO L131 PetriNetUnfolder]: For 223774/223774 co-relation queries the response was YES. [2023-08-30 10:49:40,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344029 conditions, 118107 events. 82459/118107 cut-off events. For 223774/223774 co-relation queries the response was YES. Maximal size of possible extension queue 2920. Compared 845412 event pairs, 28878 based on Foata normal form. 2534/112833 useless extension candidates. Maximal degree in co-relation 343984. Up to 44118 conditions per place. [2023-08-30 10:49:41,223 INFO L137 encePairwiseOnDemand]: 565/575 looper letters, 251 selfloop transitions, 66 changer transitions 8/325 dead transitions. [2023-08-30 10:49:41,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 325 transitions, 2542 flow [2023-08-30 10:49:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 10:49:41,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 10:49:41,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 6267 transitions. [2023-08-30 10:49:41,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47387523629489603 [2023-08-30 10:49:41,231 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 6267 transitions. [2023-08-30 10:49:41,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 6267 transitions. [2023-08-30 10:49:41,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:49:41,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 6267 transitions. [2023-08-30 10:49:41,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 272.4782608695652) internal successors, (6267), 23 states have internal predecessors, (6267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:41,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 575.0) internal successors, (13800), 24 states have internal predecessors, (13800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:41,249 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 575.0) internal successors, (13800), 24 states have internal predecessors, (13800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:41,249 INFO L175 Difference]: Start difference. First operand has 116 places, 116 transitions, 983 flow. Second operand 23 states and 6267 transitions. [2023-08-30 10:49:41,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 325 transitions, 2542 flow [2023-08-30 10:49:41,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 325 transitions, 2516 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:49:41,488 INFO L231 Difference]: Finished difference. Result has 145 places, 126 transitions, 1220 flow [2023-08-30 10:49:41,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1220, PETRI_PLACES=145, PETRI_TRANSITIONS=126} [2023-08-30 10:49:41,488 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2023-08-30 10:49:41,488 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 126 transitions, 1220 flow [2023-08-30 10:49:41,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 265.125) internal successors, (4242), 16 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:41,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:49:41,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:49:41,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 10:49:41,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:49:41,690 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:49:41,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:49:41,690 INFO L85 PathProgramCache]: Analyzing trace with hash 2124159858, now seen corresponding path program 1 times [2023-08-30 10:49:41,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:49:41,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52095550] [2023-08-30 10:49:41,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:49:41,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:49:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:49:41,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:49:41,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:49:41,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52095550] [2023-08-30 10:49:41,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52095550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:49:41,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:49:41,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:49:41,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633278541] [2023-08-30 10:49:41,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:49:41,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:49:41,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:49:41,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:49:41,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:49:41,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 575 [2023-08-30 10:49:41,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 126 transitions, 1220 flow. Second operand has 4 states, 4 states have (on average 289.25) internal successors, (1157), 4 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:41,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:49:41,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 575 [2023-08-30 10:49:41,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:49:51,770 INFO L130 PetriNetUnfolder]: 70087/100663 cut-off events. [2023-08-30 10:49:51,770 INFO L131 PetriNetUnfolder]: For 355311/355311 co-relation queries the response was YES. [2023-08-30 10:49:52,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337671 conditions, 100663 events. 70087/100663 cut-off events. For 355311/355311 co-relation queries the response was YES. Maximal size of possible extension queue 2497. Compared 705900 event pairs, 23970 based on Foata normal form. 0/98323 useless extension candidates. Maximal degree in co-relation 337617. Up to 52290 conditions per place. [2023-08-30 10:49:53,116 INFO L137 encePairwiseOnDemand]: 572/575 looper letters, 141 selfloop transitions, 2 changer transitions 7/150 dead transitions. [2023-08-30 10:49:53,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 150 transitions, 1644 flow [2023-08-30 10:49:53,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:49:53,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:49:53,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1191 transitions. [2023-08-30 10:49:53,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178260869565218 [2023-08-30 10:49:53,118 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1191 transitions. [2023-08-30 10:49:53,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1191 transitions. [2023-08-30 10:49:53,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:49:53,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1191 transitions. [2023-08-30 10:49:53,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.75) internal successors, (1191), 4 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:53,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:53,123 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:53,123 INFO L175 Difference]: Start difference. First operand has 145 places, 126 transitions, 1220 flow. Second operand 4 states and 1191 transitions. [2023-08-30 10:49:53,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 150 transitions, 1644 flow [2023-08-30 10:49:55,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 150 transitions, 1475 flow, removed 24 selfloop flow, removed 12 redundant places. [2023-08-30 10:49:55,014 INFO L231 Difference]: Finished difference. Result has 135 places, 120 transitions, 1023 flow [2023-08-30 10:49:55,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1023, PETRI_PLACES=135, PETRI_TRANSITIONS=120} [2023-08-30 10:49:55,015 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 94 predicate places. [2023-08-30 10:49:55,015 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 120 transitions, 1023 flow [2023-08-30 10:49:55,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 289.25) internal successors, (1157), 4 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:55,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:49:55,015 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-08-30 10:49:55,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 10:49:55,016 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:49:55,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:49:55,016 INFO L85 PathProgramCache]: Analyzing trace with hash -663508963, now seen corresponding path program 1 times [2023-08-30 10:49:55,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:49:55,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873583239] [2023-08-30 10:49:55,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:49:55,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:49:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:49:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:49:55,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:49:55,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873583239] [2023-08-30 10:49:55,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873583239] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:49:55,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27352093] [2023-08-30 10:49:55,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:49:55,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:49:55,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:49:55,185 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:49:55,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 10:49:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:49:55,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 10:49:55,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:49:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:49:55,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:49:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:49:55,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27352093] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:49:55,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:49:55,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-30 10:49:55,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187855290] [2023-08-30 10:49:55,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:49:55,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 10:49:55,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:49:55,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 10:49:55,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-30 10:49:55,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 575 [2023-08-30 10:49:55,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 120 transitions, 1023 flow. Second operand has 25 states, 25 states have (on average 280.12) internal successors, (7003), 25 states have internal predecessors, (7003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:49:55,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:49:55,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 575 [2023-08-30 10:49:55,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:50:18,280 INFO L130 PetriNetUnfolder]: 152406/218381 cut-off events. [2023-08-30 10:50:18,281 INFO L131 PetriNetUnfolder]: For 924393/924393 co-relation queries the response was YES. [2023-08-30 10:50:20,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748832 conditions, 218381 events. 152406/218381 cut-off events. For 924393/924393 co-relation queries the response was YES. Maximal size of possible extension queue 3158. Compared 1584486 event pairs, 110439 based on Foata normal form. 108/213029 useless extension candidates. Maximal degree in co-relation 748783. Up to 34062 conditions per place. [2023-08-30 10:50:21,032 INFO L137 encePairwiseOnDemand]: 568/575 looper letters, 684 selfloop transitions, 148 changer transitions 0/832 dead transitions. [2023-08-30 10:50:21,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 832 transitions, 6687 flow [2023-08-30 10:50:21,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 10:50:21,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 10:50:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7308 transitions. [2023-08-30 10:50:21,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295652173913044 [2023-08-30 10:50:21,037 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7308 transitions. [2023-08-30 10:50:21,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7308 transitions. [2023-08-30 10:50:21,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:50:21,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7308 transitions. [2023-08-30 10:50:21,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 304.5) internal successors, (7308), 24 states have internal predecessors, (7308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:21,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 575.0) internal successors, (14375), 25 states have internal predecessors, (14375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:21,052 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 575.0) internal successors, (14375), 25 states have internal predecessors, (14375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:21,052 INFO L175 Difference]: Start difference. First operand has 135 places, 120 transitions, 1023 flow. Second operand 24 states and 7308 transitions. [2023-08-30 10:50:21,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 832 transitions, 6687 flow [2023-08-30 10:50:53,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 832 transitions, 6404 flow, removed 126 selfloop flow, removed 8 redundant places. [2023-08-30 10:50:53,479 INFO L231 Difference]: Finished difference. Result has 157 places, 192 transitions, 2130 flow [2023-08-30 10:50:53,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2130, PETRI_PLACES=157, PETRI_TRANSITIONS=192} [2023-08-30 10:50:53,480 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 116 predicate places. [2023-08-30 10:50:53,480 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 192 transitions, 2130 flow [2023-08-30 10:50:53,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 280.12) internal successors, (7003), 25 states have internal predecessors, (7003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:53,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:50:53,481 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:50:53,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 10:50:53,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:50:53,682 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:50:53,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:50:53,683 INFO L85 PathProgramCache]: Analyzing trace with hash 429139500, now seen corresponding path program 1 times [2023-08-30 10:50:53,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:50:53,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411278766] [2023-08-30 10:50:53,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:50:53,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:50:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:50:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:50:53,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:50:53,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411278766] [2023-08-30 10:50:53,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411278766] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:50:53,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468523321] [2023-08-30 10:50:53,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:50:53,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:50:53,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:50:53,740 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:50:53,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 10:50:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:50:53,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:50:53,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:50:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:50:53,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:50:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:50:53,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468523321] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:50:53,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:50:53,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 10:50:53,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664028396] [2023-08-30 10:50:53,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:50:53,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:50:53,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:50:53,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:50:53,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:50:53,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 575 [2023-08-30 10:50:53,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 192 transitions, 2130 flow. Second operand has 7 states, 7 states have (on average 291.42857142857144) internal successors, (2040), 7 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:53,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:50:53,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 575 [2023-08-30 10:50:53,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:48,332 INFO L130 PetriNetUnfolder]: 312174/443165 cut-off events. [2023-08-30 10:51:48,332 INFO L131 PetriNetUnfolder]: For 1049593/1049593 co-relation queries the response was YES. [2023-08-30 10:51:52,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329848 conditions, 443165 events. 312174/443165 cut-off events. For 1049593/1049593 co-relation queries the response was YES. Maximal size of possible extension queue 6270. Compared 3430474 event pairs, 51345 based on Foata normal form. 25074/457235 useless extension candidates. Maximal degree in co-relation 1329792. Up to 114535 conditions per place. [2023-08-30 10:51:53,988 INFO L137 encePairwiseOnDemand]: 572/575 looper letters, 282 selfloop transitions, 5 changer transitions 0/287 dead transitions. [2023-08-30 10:51:53,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 287 transitions, 3148 flow [2023-08-30 10:51:53,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:51:53,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:51:53,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1813 transitions. [2023-08-30 10:51:53,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255072463768116 [2023-08-30 10:51:53,990 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1813 transitions. [2023-08-30 10:51:53,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1813 transitions. [2023-08-30 10:51:53,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:53,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1813 transitions. [2023-08-30 10:51:53,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 302.1666666666667) internal successors, (1813), 6 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:53,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:53,996 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:53,996 INFO L175 Difference]: Start difference. First operand has 157 places, 192 transitions, 2130 flow. Second operand 6 states and 1813 transitions. [2023-08-30 10:51:53,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 287 transitions, 3148 flow [2023-08-30 10:52:00,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 287 transitions, 2774 flow, removed 75 selfloop flow, removed 11 redundant places. [2023-08-30 10:52:00,398 INFO L231 Difference]: Finished difference. Result has 154 places, 195 transitions, 1792 flow [2023-08-30 10:52:00,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1792, PETRI_PLACES=154, PETRI_TRANSITIONS=195} [2023-08-30 10:52:00,399 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2023-08-30 10:52:00,399 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 195 transitions, 1792 flow [2023-08-30 10:52:00,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 291.42857142857144) internal successors, (2040), 7 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:52:00,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:52:00,399 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:52:00,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 10:52:00,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-30 10:52:00,601 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:52:00,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:52:00,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1110926821, now seen corresponding path program 2 times [2023-08-30 10:52:00,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:52:00,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847715756] [2023-08-30 10:52:00,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:52:00,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:52:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:52:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:52:00,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:52:00,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847715756] [2023-08-30 10:52:00,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847715756] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:52:00,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133949544] [2023-08-30 10:52:00,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:52:00,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:52:00,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:52:00,656 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:52:00,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 10:52:00,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:52:00,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:52:00,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:52:00,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:52:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 10:52:00,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:52:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 10:52:00,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133949544] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:52:00,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:52:00,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 10:52:00,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091246607] [2023-08-30 10:52:00,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:52:00,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:52:00,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:52:00,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:52:00,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:52:00,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 575 [2023-08-30 10:52:00,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 195 transitions, 1792 flow. Second operand has 6 states, 6 states have (on average 287.3333333333333) internal successors, (1724), 6 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:52:00,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:52:00,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 575 [2023-08-30 10:52:00,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:53:15,909 INFO L130 PetriNetUnfolder]: 407430/576263 cut-off events. [2023-08-30 10:53:15,910 INFO L131 PetriNetUnfolder]: For 1656659/1656659 co-relation queries the response was YES. [2023-08-30 10:53:21,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1803698 conditions, 576263 events. 407430/576263 cut-off events. For 1656659/1656659 co-relation queries the response was YES. Maximal size of possible extension queue 7990. Compared 4497059 event pairs, 103761 based on Foata normal form. 11802/588065 useless extension candidates. Maximal degree in co-relation 1803639. Up to 200279 conditions per place. [2023-08-30 10:53:22,356 INFO L137 encePairwiseOnDemand]: 570/575 looper letters, 159 selfloop transitions, 1 changer transitions 107/267 dead transitions. [2023-08-30 10:53:22,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 267 transitions, 2676 flow [2023-08-30 10:53:22,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:53:22,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:53:22,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1781 transitions. [2023-08-30 10:53:22,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516231884057971 [2023-08-30 10:53:22,358 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1781 transitions. [2023-08-30 10:53:22,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1781 transitions. [2023-08-30 10:53:22,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:53:22,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1781 transitions. [2023-08-30 10:53:22,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 296.8333333333333) internal successors, (1781), 6 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:53:22,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:53:22,363 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:53:22,363 INFO L175 Difference]: Start difference. First operand has 154 places, 195 transitions, 1792 flow. Second operand 6 states and 1781 transitions. [2023-08-30 10:53:22,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 267 transitions, 2676 flow [2023-08-30 10:54:05,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 267 transitions, 2580 flow, removed 26 selfloop flow, removed 9 redundant places. [2023-08-30 10:54:05,863 INFO L231 Difference]: Finished difference. Result has 148 places, 160 transitions, 1593 flow [2023-08-30 10:54:05,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1593, PETRI_PLACES=148, PETRI_TRANSITIONS=160} [2023-08-30 10:54:05,864 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 107 predicate places. [2023-08-30 10:54:05,864 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 160 transitions, 1593 flow [2023-08-30 10:54:05,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 287.3333333333333) internal successors, (1724), 6 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:54:05,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:54:05,864 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1] [2023-08-30 10:54:05,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 10:54:06,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-30 10:54:06,065 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 10:54:06,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:54:06,065 INFO L85 PathProgramCache]: Analyzing trace with hash -454258019, now seen corresponding path program 2 times [2023-08-30 10:54:06,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:54:06,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809158487] [2023-08-30 10:54:06,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:54:06,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:54:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:54:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:54:06,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:54:06,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809158487] [2023-08-30 10:54:06,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809158487] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:54:06,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040784952] [2023-08-30 10:54:06,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:54:06,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:54:06,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:54:06,551 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:54:06,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 10:54:06,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:54:06,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:54:06,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:54:06,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:54:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-08-30 10:54:06,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:54:06,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040784952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:54:06,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:54:06,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [24] total 26 [2023-08-30 10:54:06,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222507950] [2023-08-30 10:54:06,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:54:06,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:54:06,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:54:06,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:54:06,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2023-08-30 10:54:06,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 575 [2023-08-30 10:54:06,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 160 transitions, 1593 flow. Second operand has 4 states, 4 states have (on average 281.25) internal successors, (1125), 4 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:54:06,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:54:06,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 575 [2023-08-30 10:54:06,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:54:06,842 INFO L130 PetriNetUnfolder]: 93/392 cut-off events. [2023-08-30 10:54:06,843 INFO L131 PetriNetUnfolder]: For 2946/2946 co-relation queries the response was YES. [2023-08-30 10:54:06,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 392 events. 93/392 cut-off events. For 2946/2946 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1931 event pairs, 0 based on Foata normal form. 9/401 useless extension candidates. Maximal degree in co-relation 1767. Up to 300 conditions per place. [2023-08-30 10:54:06,844 INFO L137 encePairwiseOnDemand]: 571/575 looper letters, 0 selfloop transitions, 0 changer transitions 155/155 dead transitions. [2023-08-30 10:54:06,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 155 transitions, 1661 flow [2023-08-30 10:54:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:54:06,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:54:06,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1127 transitions. [2023-08-30 10:54:06,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2023-08-30 10:54:06,846 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1127 transitions. [2023-08-30 10:54:06,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1127 transitions. [2023-08-30 10:54:06,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:54:06,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1127 transitions. [2023-08-30 10:54:06,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:54:06,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:54:06,850 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:54:06,850 INFO L175 Difference]: Start difference. First operand has 148 places, 160 transitions, 1593 flow. Second operand 4 states and 1127 transitions. [2023-08-30 10:54:06,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 155 transitions, 1661 flow [2023-08-30 10:54:06,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 155 transitions, 1206 flow, removed 3 selfloop flow, removed 34 redundant places. [2023-08-30 10:54:06,857 INFO L231 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2023-08-30 10:54:06,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2023-08-30 10:54:06,858 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2023-08-30 10:54:06,858 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2023-08-30 10:54:06,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.25) internal successors, (1125), 4 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:54:06,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 21 remaining) [2023-08-30 10:54:06,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 10:54:06,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 10:54:06,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 10:54:06,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 10:54:06,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 10:54:06,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 10:54:06,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 10:54:06,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 10:54:06,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 10:54:06,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 10:54:06,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 10:54:06,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 21 remaining) [2023-08-30 10:54:06,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 21 remaining) [2023-08-30 10:54:06,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 21 remaining) [2023-08-30 10:54:06,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 10:54:06,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 10:54:06,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 10:54:06,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 10:54:06,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 10:54:06,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 10:54:06,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 10:54:07,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-30 10:54:07,063 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:54:07,068 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 10:54:07,068 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 10:54:07,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 10:54:07 BasicIcfg [2023-08-30 10:54:07,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 10:54:07,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 10:54:07,072 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 10:54:07,072 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 10:54:07,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:47:18" (3/4) ... [2023-08-30 10:54:07,074 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 10:54:07,079 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 10:54:07,079 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 10:54:07,079 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 10:54:07,091 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2023-08-30 10:54:07,092 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 10:54:07,092 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 10:54:07,092 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 10:54:07,144 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 10:54:07,144 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 10:54:07,145 INFO L158 Benchmark]: Toolchain (without parser) took 409509.73ms. Allocated memory was 75.5MB in the beginning and 16.1GB in the end (delta: 16.0GB). Free memory was 49.8MB in the beginning and 9.5GB in the end (delta: -9.4GB). Peak memory consumption was 6.6GB. Max. memory is 16.1GB. [2023-08-30 10:54:07,145 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 75.5MB. Free memory is still 52.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 10:54:07,145 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.64ms. Allocated memory is still 75.5MB. Free memory was 49.5MB in the beginning and 37.8MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 10:54:07,145 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.48ms. Allocated memory is still 75.5MB. Free memory was 37.8MB in the beginning and 35.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 10:54:07,146 INFO L158 Benchmark]: Boogie Preprocessor took 30.55ms. Allocated memory is still 75.5MB. Free memory was 35.5MB in the beginning and 33.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 10:54:07,146 INFO L158 Benchmark]: RCFGBuilder took 690.64ms. Allocated memory is still 75.5MB. Free memory was 33.6MB in the beginning and 32.3MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 10:54:07,146 INFO L158 Benchmark]: TraceAbstraction took 408423.44ms. Allocated memory was 75.5MB in the beginning and 16.1GB in the end (delta: 16.0GB). Free memory was 31.6MB in the beginning and 9.5GB in the end (delta: -9.4GB). Peak memory consumption was 6.6GB. Max. memory is 16.1GB. [2023-08-30 10:54:07,146 INFO L158 Benchmark]: Witness Printer took 72.75ms. Allocated memory is still 16.1GB. Free memory was 9.5GB in the beginning and 9.5GB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-08-30 10:54:07,151 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 75.5MB. Free memory is still 52.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.64ms. Allocated memory is still 75.5MB. Free memory was 49.5MB in the beginning and 37.8MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.48ms. Allocated memory is still 75.5MB. Free memory was 37.8MB in the beginning and 35.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.55ms. Allocated memory is still 75.5MB. Free memory was 35.5MB in the beginning and 33.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 690.64ms. Allocated memory is still 75.5MB. Free memory was 33.6MB in the beginning and 32.3MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 408423.44ms. Allocated memory was 75.5MB in the beginning and 16.1GB in the end (delta: 16.0GB). Free memory was 31.6MB in the beginning and 9.5GB in the end (delta: -9.4GB). Peak memory consumption was 6.6GB. Max. memory is 16.1GB. * Witness Printer took 72.75ms. Allocated memory is still 16.1GB. Free memory was 9.5GB in the beginning and 9.5GB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.6s, 224 PlacesBefore, 41 PlacesAfterwards, 235 TransitionsBefore, 39 TransitionsAfterwards, 3840 CoEnabledTransitionPairs, 7 FixpointIterations, 151 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 24 TrivialYvCompositions, 14 ConcurrentYvCompositions, 13 ChoiceCompositions, 265 TotalNumberOfCompositions, 5555 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4905, independent: 4791, independent conditional: 0, independent unconditional: 4791, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2278, independent: 2253, independent conditional: 0, independent unconditional: 2253, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4905, independent: 2538, independent conditional: 0, independent unconditional: 2538, dependent: 89, dependent conditional: 0, dependent unconditional: 89, unknown: 2278, unknown conditional: 0, unknown unconditional: 2278] , Statistics on independence cache: Total cache size (in pairs): 136, Positive cache size: 124, Positive conditional cache size: 0, Positive unconditional cache size: 124, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: 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 7 procedures, 338 locations, 21 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: 408.2s, OverallIterations: 25, TraceHistogramMax: 22, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 392.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7954 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6851 mSDsluCounter, 1792 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1389 mSDsCounter, 514 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8977 IncrementalHoareTripleChecker+Invalid, 9491 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 514 mSolverCounterUnsat, 403 mSDtfsCounter, 8977 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 174 SyntacticMatches, 6 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2130occurred in iteration=22, InterpolantAutomatonStates: 182, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 411 NumberOfCodeBlocks, 363 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 457 ConstructedInterpolants, 0 QuantifiedInterpolants, 1662 SizeOfPredicates, 21 NumberOfNonLiveVariables, 2419 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 45 InterpolantComputations, 17 PerfectInterpolantSequences, 413/949 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 10:54:07,178 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