./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.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 f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:38:51,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:38:51,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:38:51,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:38:51,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:38:51,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:38:51,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:38:51,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:38:51,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:38:51,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:38:51,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:38:51,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:38:51,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:38:51,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:38:51,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:38:51,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:38:51,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:38:51,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:38:51,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:38:51,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:38:51,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:38:51,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:38:51,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:38:51,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:38:51,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:38:51,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:38:51,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:38:51,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:38:51,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:38:51,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:38:51,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:38:51,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:38:51,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:38:51,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:38:51,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:38:51,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:38:51,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:38:51,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:38:51,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:38:51,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:38:51,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:38:51,106 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:38:51,131 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:38:51,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:38:51,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:38:51,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:38:51,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:38:51,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:38:51,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:38:51,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:38:51,134 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:38:51,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:38:51,134 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:38:51,135 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:38:51,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:38:51,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:38:51,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:38:51,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:38:51,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:38:51,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:38:51,136 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:38:51,136 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:38:51,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:38:51,136 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:38:51,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:38:51,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:38:51,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:38:51,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:38:51,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:38:51,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:38:51,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:38:51,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:38:51,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:38:51,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:38:51,138 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:38:51,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:38:51,138 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:38:51,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:38:51,138 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:38:51,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:38:51,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:38:51,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:38:51,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:38:51,393 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:38:51,394 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:38:51,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-08-30 15:38:52,403 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:38:52,564 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:38:52,564 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-08-30 15:38:52,569 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78d0d894f/413af9b7ca184bfa8569c7cf50c29997/FLAG6f414549a [2023-08-30 15:38:52,579 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78d0d894f/413af9b7ca184bfa8569c7cf50c29997 [2023-08-30 15:38:52,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:38:52,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:38:52,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:38:52,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:38:52,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:38:52,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:38:52" (1/1) ... [2023-08-30 15:38:52,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d80f160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:38:52, skipping insertion in model container [2023-08-30 15:38:52,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:38:52" (1/1) ... [2023-08-30 15:38:52,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:38:52,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:38:52,724 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/popl20-more-buffer-series2.wvr.c[4232,4245] [2023-08-30 15:38:52,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:38:52,747 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:38:52,781 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/popl20-more-buffer-series2.wvr.c[4232,4245] [2023-08-30 15:38:52,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:38:52,798 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:38:52,799 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:38:52,803 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:38:52,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:38:52 WrapperNode [2023-08-30 15:38:52,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:38:52,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:38:52,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:38:52,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:38:52,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:38:52" (1/1) ... [2023-08-30 15:38:52,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:38:52" (1/1) ... [2023-08-30 15:38:52,860 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 402 [2023-08-30 15:38:52,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:38:52,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:38:52,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:38:52,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:38:52,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:38:52" (1/1) ... [2023-08-30 15:38:52,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:38:52" (1/1) ... [2023-08-30 15:38:52,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:38:52" (1/1) ... [2023-08-30 15:38:52,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:38:52" (1/1) ... [2023-08-30 15:38:52,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:38:52" (1/1) ... [2023-08-30 15:38:52,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:38:52" (1/1) ... [2023-08-30 15:38:52,910 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:38:52" (1/1) ... [2023-08-30 15:38:52,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:38:52" (1/1) ... [2023-08-30 15:38:52,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:38:52,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:38:52,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:38:52,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:38:52,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:38:52" (1/1) ... [2023-08-30 15:38:52,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:38:52,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:38:52,943 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 15:38:52,957 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 15:38:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:38:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:38:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:38:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:38:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:38:52,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:38:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:38:52,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:38:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:38:52,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:38:52,974 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 15:38:52,974 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 15:38:52,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:38:52,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:38:52,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:38:52,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:38:52,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:38:52,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:38:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:38:52,976 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 15:38:53,082 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:38:53,083 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:38:53,492 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:38:53,860 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:38:53,860 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-30 15:38:53,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:38:53 BoogieIcfgContainer [2023-08-30 15:38:53,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:38:53,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:38:53,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:38:53,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:38:53,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:38:52" (1/3) ... [2023-08-30 15:38:53,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a728fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:38:53, skipping insertion in model container [2023-08-30 15:38:53,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:38:52" (2/3) ... [2023-08-30 15:38:53,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a728fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:38:53, skipping insertion in model container [2023-08-30 15:38:53,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:38:53" (3/3) ... [2023-08-30 15:38:53,867 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2023-08-30 15:38:53,872 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:38:53,878 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:38:53,878 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-08-30 15:38:53,878 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:38:54,012 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 15:38:54,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 287 transitions, 606 flow [2023-08-30 15:38:54,136 INFO L130 PetriNetUnfolder]: 22/283 cut-off events. [2023-08-30 15:38:54,136 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 15:38:54,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 283 events. 22/283 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 336 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 240. Up to 2 conditions per place. [2023-08-30 15:38:54,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 287 transitions, 606 flow [2023-08-30 15:38:54,144 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 263 transitions, 547 flow [2023-08-30 15:38:54,146 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:38:54,152 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 263 transitions, 547 flow [2023-08-30 15:38:54,154 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 263 transitions, 547 flow [2023-08-30 15:38:54,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 263 transitions, 547 flow [2023-08-30 15:38:54,190 INFO L130 PetriNetUnfolder]: 21/263 cut-off events. [2023-08-30 15:38:54,190 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:38:54,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 263 events. 21/263 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 330 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 240. Up to 2 conditions per place. [2023-08-30 15:38:54,201 INFO L119 LiptonReduction]: Number of co-enabled transitions 4384 [2023-08-30 15:39:07,144 INFO L134 LiptonReduction]: Checked pairs total: 7078 [2023-08-30 15:39:07,145 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-08-30 15:39:07,155 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:39:07,159 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;@569611a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:39:07,159 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2023-08-30 15:39:07,161 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:39:07,161 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:39:07,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:07,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:39:07,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 15:39:07,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:07,165 INFO L85 PathProgramCache]: Analyzing trace with hash 49635, now seen corresponding path program 1 times [2023-08-30 15:39:07,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:07,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788746695] [2023-08-30 15:39:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:07,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:07,388 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 15:39:07,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:07,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788746695] [2023-08-30 15:39:07,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788746695] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:39:07,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:39:07,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:39:07,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369666449] [2023-08-30 15:39:07,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:39:07,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:39:07,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:07,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:39:07,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:39:07,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-08-30 15:39:07,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:07,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:07,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-08-30 15:39:07,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:12,829 INFO L130 PetriNetUnfolder]: 45294/56452 cut-off events. [2023-08-30 15:39:12,829 INFO L131 PetriNetUnfolder]: For 924/924 co-relation queries the response was YES. [2023-08-30 15:39:12,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113835 conditions, 56452 events. 45294/56452 cut-off events. For 924/924 co-relation queries the response was YES. Maximal size of possible extension queue 4699. Compared 312612 event pairs, 29191 based on Foata normal form. 0/17034 useless extension candidates. Maximal degree in co-relation 48897. Up to 27682 conditions per place. [2023-08-30 15:39:13,156 INFO L137 encePairwiseOnDemand]: 541/564 looper letters, 87 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2023-08-30 15:39:13,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 426 flow [2023-08-30 15:39:13,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:39:13,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:39:13,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2023-08-30 15:39:13,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46867612293144206 [2023-08-30 15:39:13,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2023-08-30 15:39:13,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2023-08-30 15:39:13,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:13,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2023-08-30 15:39:13,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:13,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:13,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:13,186 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 155 flow. Second operand 3 states and 793 transitions. [2023-08-30 15:39:13,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 426 flow [2023-08-30 15:39:13,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 400 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 15:39:13,521 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 176 flow [2023-08-30 15:39:13,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-08-30 15:39:13,525 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -14 predicate places. [2023-08-30 15:39:13,525 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 176 flow [2023-08-30 15:39:13,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:13,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:13,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:39:13,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:39:13,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 15:39:13,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:13,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1540239, now seen corresponding path program 1 times [2023-08-30 15:39:13,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:13,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105889391] [2023-08-30 15:39:13,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:13,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:13,585 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 15:39:13,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:13,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105889391] [2023-08-30 15:39:13,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105889391] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:39:13,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:39:13,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:39:13,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470911421] [2023-08-30 15:39:13,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:39:13,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:39:13,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:13,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:39:13,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:39:13,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-08-30 15:39:13,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:13,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:13,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-08-30 15:39:13,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:18,741 INFO L130 PetriNetUnfolder]: 45303/56458 cut-off events. [2023-08-30 15:39:18,741 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:39:18,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112882 conditions, 56458 events. 45303/56458 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4699. Compared 313064 event pairs, 29192 based on Foata normal form. 0/16801 useless extension candidates. Maximal degree in co-relation 56421. Up to 55368 conditions per place. [2023-08-30 15:39:19,009 INFO L137 encePairwiseOnDemand]: 560/564 looper letters, 51 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-30 15:39:19,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 268 flow [2023-08-30 15:39:19,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:39:19,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:39:19,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 722 transitions. [2023-08-30 15:39:19,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42671394799054374 [2023-08-30 15:39:19,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 722 transitions. [2023-08-30 15:39:19,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 722 transitions. [2023-08-30 15:39:19,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:19,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 722 transitions. [2023-08-30 15:39:19,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:19,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:19,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:19,016 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 176 flow. Second operand 3 states and 722 transitions. [2023-08-30 15:39:19,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 268 flow [2023-08-30 15:39:19,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:39:19,018 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 154 flow [2023-08-30 15:39:19,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2023-08-30 15:39:19,019 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -17 predicate places. [2023-08-30 15:39:19,019 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 154 flow [2023-08-30 15:39:19,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:19,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:19,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:39:19,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:39:19,020 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 15:39:19,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:19,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1540240, now seen corresponding path program 1 times [2023-08-30 15:39:19,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:19,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239755741] [2023-08-30 15:39:19,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:19,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:19,075 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 15:39:19,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:19,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239755741] [2023-08-30 15:39:19,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239755741] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:39:19,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842372966] [2023-08-30 15:39:19,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:19,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:19,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:39:19,079 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 15:39:19,097 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 15:39:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:19,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:39:19,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:39:19,248 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 15:39:19,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:39:19,260 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 15:39:19,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842372966] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:39:19,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:39:19,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:39:19,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92614730] [2023-08-30 15:39:19,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:39:19,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:39:19,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:19,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:39:19,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:39:19,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-08-30 15:39:19,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:19,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:19,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-08-30 15:39:19,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:31,835 INFO L130 PetriNetUnfolder]: 113220/141103 cut-off events. [2023-08-30 15:39:31,835 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:39:32,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282091 conditions, 141103 events. 113220/141103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9657. Compared 845128 event pairs, 72976 based on Foata normal form. 0/42947 useless extension candidates. Maximal degree in co-relation 282083. Up to 27688 conditions per place. [2023-08-30 15:39:32,625 INFO L137 encePairwiseOnDemand]: 555/564 looper letters, 198 selfloop transitions, 21 changer transitions 0/225 dead transitions. [2023-08-30 15:39:32,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 225 transitions, 988 flow [2023-08-30 15:39:32,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:39:32,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:39:32,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1572 transitions. [2023-08-30 15:39:32,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2023-08-30 15:39:32,629 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1572 transitions. [2023-08-30 15:39:32,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1572 transitions. [2023-08-30 15:39:32,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:32,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1572 transitions. [2023-08-30 15:39:32,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:32,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 564.0) internal successors, (3948), 7 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:32,637 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 564.0) internal successors, (3948), 7 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:32,637 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 154 flow. Second operand 6 states and 1572 transitions. [2023-08-30 15:39:32,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 225 transitions, 988 flow [2023-08-30 15:39:32,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 225 transitions, 987 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:39:32,640 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 303 flow [2023-08-30 15:39:32,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=63, PETRI_TRANSITIONS=73} [2023-08-30 15:39:32,641 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-08-30 15:39:32,641 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 303 flow [2023-08-30 15:39:32,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:32,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:32,642 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:39:32,651 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 15:39:32,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:32,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 15:39:32,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:32,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1357837084, now seen corresponding path program 2 times [2023-08-30 15:39:32,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:32,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896448657] [2023-08-30 15:39:32,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:32,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:32,920 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 15:39:32,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:32,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896448657] [2023-08-30 15:39:32,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896448657] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:39:32,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860969321] [2023-08-30 15:39:32,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:39:32,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:32,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:39:32,923 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 15:39:32,925 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 15:39:33,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:39:33,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:39:33,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:39:33,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:39:33,042 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 15:39:33,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:39:33,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860969321] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:39:33,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:39:33,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:39:33,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810232148] [2023-08-30 15:39:33,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:39:33,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:39:33,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:33,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:39:33,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:39:33,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 564 [2023-08-30 15:39:33,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:33,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:33,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 564 [2023-08-30 15:39:33,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:45,336 INFO L130 PetriNetUnfolder]: 113256/141138 cut-off events. [2023-08-30 15:39:45,337 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 15:39:45,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282212 conditions, 141138 events. 113256/141138 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9517. Compared 846324 event pairs, 72980 based on Foata normal form. 1/42000 useless extension candidates. Maximal degree in co-relation 282200. Up to 138408 conditions per place. [2023-08-30 15:39:45,987 INFO L137 encePairwiseOnDemand]: 561/564 looper letters, 60 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2023-08-30 15:39:45,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 425 flow [2023-08-30 15:39:45,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:39:45,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:39:45,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2023-08-30 15:39:45,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4302600472813239 [2023-08-30 15:39:45,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2023-08-30 15:39:45,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2023-08-30 15:39:45,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:45,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2023-08-30 15:39:45,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:45,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:45,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:45,995 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 303 flow. Second operand 3 states and 728 transitions. [2023-08-30 15:39:45,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 425 flow [2023-08-30 15:39:45,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 395 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 15:39:45,997 INFO L231 Difference]: Finished difference. Result has 63 places, 72 transitions, 275 flow [2023-08-30 15:39:45,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=72} [2023-08-30 15:39:45,998 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-08-30 15:39:45,998 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 72 transitions, 275 flow [2023-08-30 15:39:45,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:45,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:45,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:39:46,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 15:39:46,203 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 15:39:46,206 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 15:39:46,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:46,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1510203433, now seen corresponding path program 1 times [2023-08-30 15:39:46,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:46,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106170414] [2023-08-30 15:39:46,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:46,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:46,275 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 15:39:46,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:46,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106170414] [2023-08-30 15:39:46,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106170414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:39:46,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:39:46,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:39:46,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230899599] [2023-08-30 15:39:46,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:39:46,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:39:46,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:46,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:39:46,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:39:46,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 564 [2023-08-30 15:39:46,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 72 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:46,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:46,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 564 [2023-08-30 15:39:46,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:40:00,838 INFO L130 PetriNetUnfolder]: 130576/166603 cut-off events. [2023-08-30 15:40:00,838 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 15:40:01,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335276 conditions, 166603 events. 130576/166603 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 11664. Compared 1110438 event pairs, 33245 based on Foata normal form. 0/53042 useless extension candidates. Maximal degree in co-relation 335263. Up to 108456 conditions per place. [2023-08-30 15:40:01,685 INFO L137 encePairwiseOnDemand]: 560/564 looper letters, 98 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-30 15:40:01,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 106 transitions, 550 flow [2023-08-30 15:40:01,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:40:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:40:01,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 778 transitions. [2023-08-30 15:40:01,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4598108747044917 [2023-08-30 15:40:01,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 778 transitions. [2023-08-30 15:40:01,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 778 transitions. [2023-08-30 15:40:01,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:40:01,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 778 transitions. [2023-08-30 15:40:01,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:01,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:01,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:01,692 INFO L175 Difference]: Start difference. First operand has 63 places, 72 transitions, 275 flow. Second operand 3 states and 778 transitions. [2023-08-30 15:40:01,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 106 transitions, 550 flow [2023-08-30 15:40:01,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 106 transitions, 538 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:40:01,700 INFO L231 Difference]: Finished difference. Result has 64 places, 73 transitions, 277 flow [2023-08-30 15:40:01,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=64, PETRI_TRANSITIONS=73} [2023-08-30 15:40:01,701 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-08-30 15:40:01,701 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 73 transitions, 277 flow [2023-08-30 15:40:01,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:01,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:40:01,701 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:40:01,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:40:01,702 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 15:40:01,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:40:01,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1476068836, now seen corresponding path program 1 times [2023-08-30 15:40:01,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:40:01,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555261295] [2023-08-30 15:40:01,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:01,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:40:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:01,773 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 15:40:01,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:40:01,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555261295] [2023-08-30 15:40:01,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555261295] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:40:01,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469816300] [2023-08-30 15:40:01,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:01,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:40:01,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:40:01,776 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 15:40:01,778 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 15:40:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:01,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:40:01,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:40:01,895 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 15:40:01,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:40:01,933 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 15:40:01,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469816300] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:40:01,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:40:01,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 15:40:01,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305922220] [2023-08-30 15:40:01,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:40:01,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:40:01,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:40:01,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:40:01,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:40:02,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-08-30 15:40:02,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 73 transitions, 277 flow. Second operand has 13 states, 13 states have (on average 225.15384615384616) internal successors, (2927), 13 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:02,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:40:02,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-08-30 15:40:02,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:40:35,981 INFO L130 PetriNetUnfolder]: 289493/371126 cut-off events. [2023-08-30 15:40:35,982 INFO L131 PetriNetUnfolder]: For 19325/19325 co-relation queries the response was YES. [2023-08-30 15:40:36,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790228 conditions, 371126 events. 289493/371126 cut-off events. For 19325/19325 co-relation queries the response was YES. Maximal size of possible extension queue 15065. Compared 2582579 event pairs, 214171 based on Foata normal form. 12/141479 useless extension candidates. Maximal degree in co-relation 790214. Up to 38589 conditions per place. [2023-08-30 15:40:37,948 INFO L137 encePairwiseOnDemand]: 556/564 looper letters, 436 selfloop transitions, 51 changer transitions 0/493 dead transitions. [2023-08-30 15:40:37,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 493 transitions, 2369 flow [2023-08-30 15:40:37,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:40:37,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:40:37,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3176 transitions. [2023-08-30 15:40:37,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46926713947990545 [2023-08-30 15:40:37,954 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3176 transitions. [2023-08-30 15:40:37,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3176 transitions. [2023-08-30 15:40:37,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:40:37,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3176 transitions. [2023-08-30 15:40:37,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 264.6666666666667) internal successors, (3176), 12 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:37,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 564.0) internal successors, (7332), 13 states have internal predecessors, (7332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:37,966 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 564.0) internal successors, (7332), 13 states have internal predecessors, (7332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:37,966 INFO L175 Difference]: Start difference. First operand has 64 places, 73 transitions, 277 flow. Second operand 12 states and 3176 transitions. [2023-08-30 15:40:37,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 493 transitions, 2369 flow [2023-08-30 15:40:37,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 493 transitions, 2357 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:40:37,991 INFO L231 Difference]: Finished difference. Result has 80 places, 103 transitions, 623 flow [2023-08-30 15:40:37,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=623, PETRI_PLACES=80, PETRI_TRANSITIONS=103} [2023-08-30 15:40:37,991 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2023-08-30 15:40:37,992 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 103 transitions, 623 flow [2023-08-30 15:40:37,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 225.15384615384616) internal successors, (2927), 13 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:37,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:40:37,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:40:37,998 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 15:40:38,197 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 15:40:38,198 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 15:40:38,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:40:38,199 INFO L85 PathProgramCache]: Analyzing trace with hash -428327773, now seen corresponding path program 1 times [2023-08-30 15:40:38,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:40:38,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835133294] [2023-08-30 15:40:38,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:38,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:40:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:38,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:40:38,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:40:38,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835133294] [2023-08-30 15:40:38,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835133294] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:40:38,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881621803] [2023-08-30 15:40:38,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:38,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:40:38,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:40:38,265 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 15:40:38,267 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 15:40:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:38,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 15:40:38,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:40:38,411 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 15:40:38,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:40:38,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881621803] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:40:38,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:40:38,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-08-30 15:40:38,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820956809] [2023-08-30 15:40:38,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:40:38,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:40:38,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:40:38,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:40:38,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:40:38,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 564 [2023-08-30 15:40:38,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 103 transitions, 623 flow. Second operand has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:38,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:40:38,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 564 [2023-08-30 15:40:38,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand