./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.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-simple-array-sum.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 eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc --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 15:51:59,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:51:59,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:51:59,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:51:59,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:51:59,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:51:59,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:51:59,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:51:59,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:51:59,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:51:59,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:51:59,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:51:59,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:51:59,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:51:59,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:51:59,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:51:59,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:51:59,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:51:59,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:51:59,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:51:59,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:51:59,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:51:59,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:51:59,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:51:59,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:51:59,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:51:59,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:51:59,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:51:59,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:51:59,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:51:59,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:51:59,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:51:59,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:51:59,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:51:59,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:51:59,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:51:59,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:51:59,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:51:59,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:51:59,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:51:59,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:51:59,420 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:51:59,444 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:51:59,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:51:59,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:51:59,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:51:59,445 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:51:59,445 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:51:59,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:51:59,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:51:59,446 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:51:59,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:51:59,447 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:51:59,447 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:51:59,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:51:59,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:51:59,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:51:59,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:51:59,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:51:59,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:51:59,448 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:51:59,448 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:51:59,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:51:59,448 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:51:59,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:51:59,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:51:59,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:51:59,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:51:59,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:51:59,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:51:59,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:51:59,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:51:59,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:51:59,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:51:59,450 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:51:59,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:51:59,450 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:51:59,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:51:59,450 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:51:59,451 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:51:59,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:51:59,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:51:59,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:51:59,674 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:51:59,675 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:51:59,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2023-08-30 15:52:00,509 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:52:00,688 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:52:00,688 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2023-08-30 15:52:00,692 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9277d45a0/b86da5355b6d42faa85a0212666d38d7/FLAGbe877d46e [2023-08-30 15:52:00,701 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9277d45a0/b86da5355b6d42faa85a0212666d38d7 [2023-08-30 15:52:00,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:52:00,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:52:00,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:52:00,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:52:00,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:52:00,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:52:00" (1/1) ... [2023-08-30 15:52:00,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@637b13d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:00, skipping insertion in model container [2023-08-30 15:52:00,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:52:00" (1/1) ... [2023-08-30 15:52:00,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:52:00,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:52:00,880 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-simple-array-sum.wvr.c[2690,2703] [2023-08-30 15:52:00,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:52:00,896 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:52:00,924 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-simple-array-sum.wvr.c[2690,2703] [2023-08-30 15:52:00,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:52:00,938 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:52:00,939 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:52:00,943 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:52:00,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:00 WrapperNode [2023-08-30 15:52:00,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:52:00,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:52:00,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:52:00,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:52:00,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:00" (1/1) ... [2023-08-30 15:52:00,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:00" (1/1) ... [2023-08-30 15:52:00,983 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 128 [2023-08-30 15:52:00,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:52:00,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:52:00,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:52:00,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:52:00,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:00" (1/1) ... [2023-08-30 15:52:00,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:00" (1/1) ... [2023-08-30 15:52:01,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:00" (1/1) ... [2023-08-30 15:52:01,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:00" (1/1) ... [2023-08-30 15:52:01,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:00" (1/1) ... [2023-08-30 15:52:01,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:00" (1/1) ... [2023-08-30 15:52:01,054 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:00" (1/1) ... [2023-08-30 15:52:01,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:00" (1/1) ... [2023-08-30 15:52:01,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:52:01,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:52:01,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:52:01,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:52:01,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:00" (1/1) ... [2023-08-30 15:52:01,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:52:01,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:52:01,094 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 15:52:01,112 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 15:52:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:52:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:52:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:52:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:52:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:52:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:52:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:52:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:52:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:52:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:52:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:52:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:52:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:52:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:52:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:52:01,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:52:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:52:01,125 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 15:52:01,194 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:52:01,195 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:52:01,486 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:52:01,523 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:52:01,527 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-30 15:52:01,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:52:01 BoogieIcfgContainer [2023-08-30 15:52:01,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:52:01,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:52:01,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:52:01,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:52:01,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:52:00" (1/3) ... [2023-08-30 15:52:01,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47da2488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:52:01, skipping insertion in model container [2023-08-30 15:52:01,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:00" (2/3) ... [2023-08-30 15:52:01,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47da2488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:52:01, skipping insertion in model container [2023-08-30 15:52:01,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:52:01" (3/3) ... [2023-08-30 15:52:01,535 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2023-08-30 15:52:01,540 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:52:01,546 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:52:01,546 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 15:52:01,547 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:52:01,638 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:52:01,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 192 transitions, 408 flow [2023-08-30 15:52:01,727 INFO L130 PetriNetUnfolder]: 16/189 cut-off events. [2023-08-30 15:52:01,729 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:52:01,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 189 events. 16/189 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 185 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 148. Up to 3 conditions per place. [2023-08-30 15:52:01,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 192 transitions, 408 flow [2023-08-30 15:52:01,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 171 transitions, 357 flow [2023-08-30 15:52:01,742 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:52:01,751 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 171 transitions, 357 flow [2023-08-30 15:52:01,754 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 171 transitions, 357 flow [2023-08-30 15:52:01,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 171 transitions, 357 flow [2023-08-30 15:52:01,792 INFO L130 PetriNetUnfolder]: 15/171 cut-off events. [2023-08-30 15:52:01,792 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:52:01,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 171 events. 15/171 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 183 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 148. Up to 3 conditions per place. [2023-08-30 15:52:01,794 INFO L119 LiptonReduction]: Number of co-enabled transitions 2680 [2023-08-30 15:52:05,850 INFO L134 LiptonReduction]: Checked pairs total: 4485 [2023-08-30 15:52:05,850 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-08-30 15:52:05,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:52:05,863 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;@3480c826, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:52:05,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-30 15:52:05,864 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:52:05,864 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:52:05,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:05,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:52:05,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:05,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:05,868 INFO L85 PathProgramCache]: Analyzing trace with hash 22949, now seen corresponding path program 1 times [2023-08-30 15:52:05,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:05,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072010569] [2023-08-30 15:52:05,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:05,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:06,018 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 15:52:06,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:06,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072010569] [2023-08-30 15:52:06,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072010569] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:52:06,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:52:06,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:52:06,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030148386] [2023-08-30 15:52:06,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:52:06,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:52:06,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:06,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:52:06,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:52:06,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 365 [2023-08-30 15:52:06,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:06,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:06,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 365 [2023-08-30 15:52:06,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:06,368 INFO L130 PetriNetUnfolder]: 3269/4307 cut-off events. [2023-08-30 15:52:06,369 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2023-08-30 15:52:06,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8805 conditions, 4307 events. 3269/4307 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 19344 event pairs, 1766 based on Foata normal form. 0/1862 useless extension candidates. Maximal degree in co-relation 3753. Up to 2136 conditions per place. [2023-08-30 15:52:06,387 INFO L137 encePairwiseOnDemand]: 357/365 looper letters, 59 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2023-08-30 15:52:06,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 288 flow [2023-08-30 15:52:06,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:52:06,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:52:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2023-08-30 15:52:06,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5187214611872146 [2023-08-30 15:52:06,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2023-08-30 15:52:06,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2023-08-30 15:52:06,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:06,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2023-08-30 15:52:06,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:06,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:06,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:06,409 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 89 flow. Second operand 3 states and 568 transitions. [2023-08-30 15:52:06,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 288 flow [2023-08-30 15:52:06,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 66 transitions, 270 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:52:06,416 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 116 flow [2023-08-30 15:52:06,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-08-30 15:52:06,420 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-08-30 15:52:06,420 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 116 flow [2023-08-30 15:52:06,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:06,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:06,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:52:06,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:52:06,421 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:06,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:06,421 INFO L85 PathProgramCache]: Analyzing trace with hash 712668, now seen corresponding path program 1 times [2023-08-30 15:52:06,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:06,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922904425] [2023-08-30 15:52:06,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:06,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:06,538 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 15:52:06,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:06,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922904425] [2023-08-30 15:52:06,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922904425] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:52:06,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105943538] [2023-08-30 15:52:06,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:06,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:52:06,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:52:06,548 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 15:52:06,550 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 15:52:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:06,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:52:06,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:52:06,640 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 15:52:06,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:52:06,663 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 15:52:06,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105943538] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:52:06,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:52:06,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:52:06,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595587398] [2023-08-30 15:52:06,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:52:06,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:52:06,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:06,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:52:06,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:52:06,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 365 [2023-08-30 15:52:06,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:06,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:06,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 365 [2023-08-30 15:52:06,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:07,464 INFO L130 PetriNetUnfolder]: 8177/10766 cut-off events. [2023-08-30 15:52:07,464 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-08-30 15:52:07,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21794 conditions, 10766 events. 8177/10766 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 54774 event pairs, 4415 based on Foata normal form. 0/4686 useless extension candidates. Maximal degree in co-relation 17391. Up to 2134 conditions per place. [2023-08-30 15:52:07,506 INFO L137 encePairwiseOnDemand]: 357/365 looper letters, 135 selfloop transitions, 21 changer transitions 0/159 dead transitions. [2023-08-30 15:52:07,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 159 transitions, 726 flow [2023-08-30 15:52:07,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:52:07,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:52:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1331 transitions. [2023-08-30 15:52:07,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209393346379648 [2023-08-30 15:52:07,510 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1331 transitions. [2023-08-30 15:52:07,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1331 transitions. [2023-08-30 15:52:07,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:07,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1331 transitions. [2023-08-30 15:52:07,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 190.14285714285714) internal successors, (1331), 7 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:07,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:07,516 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:07,516 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 116 flow. Second operand 7 states and 1331 transitions. [2023-08-30 15:52:07,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 159 transitions, 726 flow [2023-08-30 15:52:07,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 159 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:52:07,519 INFO L231 Difference]: Finished difference. Result has 47 places, 55 transitions, 247 flow [2023-08-30 15:52:07,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=47, PETRI_TRANSITIONS=55} [2023-08-30 15:52:07,520 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-08-30 15:52:07,520 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 55 transitions, 247 flow [2023-08-30 15:52:07,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:07,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:07,521 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 15:52:07,530 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 15:52:07,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:52:07,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:07,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:07,729 INFO L85 PathProgramCache]: Analyzing trace with hash 22093956, now seen corresponding path program 1 times [2023-08-30 15:52:07,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:07,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189203538] [2023-08-30 15:52:07,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:07,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:07,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:52:07,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:07,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189203538] [2023-08-30 15:52:07,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189203538] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:52:07,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:52:07,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:52:07,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203593236] [2023-08-30 15:52:07,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:52:07,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:52:07,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:07,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:52:07,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:52:07,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 365 [2023-08-30 15:52:07,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 55 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:07,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:07,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 365 [2023-08-30 15:52:07,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:08,351 INFO L130 PetriNetUnfolder]: 8171/10758 cut-off events. [2023-08-30 15:52:08,351 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2023-08-30 15:52:08,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21796 conditions, 10758 events. 8171/10758 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 54582 event pairs, 4415 based on Foata normal form. 2/4628 useless extension candidates. Maximal degree in co-relation 13058. Up to 10653 conditions per place. [2023-08-30 15:52:08,431 INFO L137 encePairwiseOnDemand]: 362/365 looper letters, 43 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-08-30 15:52:08,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 47 transitions, 281 flow [2023-08-30 15:52:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:52:08,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:52:08,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2023-08-30 15:52:08,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4885844748858447 [2023-08-30 15:52:08,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2023-08-30 15:52:08,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2023-08-30 15:52:08,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:08,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2023-08-30 15:52:08,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:08,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:08,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:08,436 INFO L175 Difference]: Start difference. First operand has 47 places, 55 transitions, 247 flow. Second operand 3 states and 535 transitions. [2023-08-30 15:52:08,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 47 transitions, 281 flow [2023-08-30 15:52:08,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 262 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 15:52:08,437 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 176 flow [2023-08-30 15:52:08,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2023-08-30 15:52:08,438 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2023-08-30 15:52:08,438 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 176 flow [2023-08-30 15:52:08,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:08,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:08,438 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:52:08,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 15:52:08,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:08,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:08,439 INFO L85 PathProgramCache]: Analyzing trace with hash -242503835, now seen corresponding path program 2 times [2023-08-30 15:52:08,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:08,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446694736] [2023-08-30 15:52:08,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:08,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:08,544 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 15:52:08,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:08,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446694736] [2023-08-30 15:52:08,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446694736] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:52:08,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203906384] [2023-08-30 15:52:08,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:52:08,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:52:08,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:52:08,548 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 15:52:08,551 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 15:52:08,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:52:08,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:52:08,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:52:08,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:52:08,616 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 15:52:08,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:52:08,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203906384] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:52:08,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:52:08,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:52:08,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954257709] [2023-08-30 15:52:08,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:52:08,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:52:08,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:08,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:52:08,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:52:08,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 365 [2023-08-30 15:52:08,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:08,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:08,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 365 [2023-08-30 15:52:08,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:09,120 INFO L130 PetriNetUnfolder]: 8171/10757 cut-off events. [2023-08-30 15:52:09,121 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 15:52:09,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21781 conditions, 10757 events. 8171/10757 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 54656 event pairs, 4415 based on Foata normal form. 1/4627 useless extension candidates. Maximal degree in co-relation 21769. Up to 10647 conditions per place. [2023-08-30 15:52:09,165 INFO L137 encePairwiseOnDemand]: 362/365 looper letters, 37 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2023-08-30 15:52:09,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 252 flow [2023-08-30 15:52:09,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:52:09,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:52:09,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2023-08-30 15:52:09,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4922374429223744 [2023-08-30 15:52:09,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2023-08-30 15:52:09,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2023-08-30 15:52:09,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:09,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2023-08-30 15:52:09,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:09,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:09,171 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:09,171 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 176 flow. Second operand 3 states and 539 transitions. [2023-08-30 15:52:09,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 252 flow [2023-08-30 15:52:09,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:52:09,172 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 177 flow [2023-08-30 15:52:09,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2023-08-30 15:52:09,173 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2023-08-30 15:52:09,173 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 177 flow [2023-08-30 15:52:09,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:09,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:09,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:52:09,180 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 15:52:09,378 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 15:52:09,378 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:09,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:09,379 INFO L85 PathProgramCache]: Analyzing trace with hash -235431933, now seen corresponding path program 1 times [2023-08-30 15:52:09,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:09,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928359856] [2023-08-30 15:52:09,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:09,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:09,410 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 15:52:09,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:09,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928359856] [2023-08-30 15:52:09,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928359856] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:52:09,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:52:09,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:52:09,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614537435] [2023-08-30 15:52:09,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:52:09,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:52:09,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:09,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:52:09,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:52:09,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-08-30 15:52:09,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:09,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:09,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-08-30 15:52:09,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:10,110 INFO L130 PetriNetUnfolder]: 10601/14467 cut-off events. [2023-08-30 15:52:10,111 INFO L131 PetriNetUnfolder]: For 256/256 co-relation queries the response was YES. [2023-08-30 15:52:10,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29357 conditions, 14467 events. 10601/14467 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 939. Compared 80650 event pairs, 4270 based on Foata normal form. 0/7152 useless extension candidates. Maximal degree in co-relation 29344. Up to 9513 conditions per place. [2023-08-30 15:52:10,164 INFO L137 encePairwiseOnDemand]: 361/365 looper letters, 64 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-30 15:52:10,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 68 transitions, 358 flow [2023-08-30 15:52:10,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:52:10,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:52:10,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 569 transitions. [2023-08-30 15:52:10,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196347031963471 [2023-08-30 15:52:10,166 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 569 transitions. [2023-08-30 15:52:10,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 569 transitions. [2023-08-30 15:52:10,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:10,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 569 transitions. [2023-08-30 15:52:10,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:10,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:10,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:10,169 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 177 flow. Second operand 3 states and 569 transitions. [2023-08-30 15:52:10,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 68 transitions, 358 flow [2023-08-30 15:52:10,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:52:10,170 INFO L231 Difference]: Finished difference. Result has 46 places, 47 transitions, 179 flow [2023-08-30 15:52:10,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=46, PETRI_TRANSITIONS=47} [2023-08-30 15:52:10,171 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2023-08-30 15:52:10,171 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 47 transitions, 179 flow [2023-08-30 15:52:10,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:10,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:10,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:52:10,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:52:10,171 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:10,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:10,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1291545728, now seen corresponding path program 1 times [2023-08-30 15:52:10,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:10,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508954959] [2023-08-30 15:52:10,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:10,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:10,200 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 15:52:10,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:10,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508954959] [2023-08-30 15:52:10,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508954959] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:52:10,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988002164] [2023-08-30 15:52:10,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:10,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:52:10,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:52:10,206 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 15:52:10,207 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 15:52:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:10,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:52:10,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:52:10,296 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 15:52:10,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:52:10,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988002164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:52:10,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:52:10,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 15:52:10,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244107532] [2023-08-30 15:52:10,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:52:10,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:52:10,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:10,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:52:10,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:52:10,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 365 [2023-08-30 15:52:10,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 47 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:10,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:10,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 365 [2023-08-30 15:52:10,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:11,241 INFO L130 PetriNetUnfolder]: 12680/17496 cut-off events. [2023-08-30 15:52:11,241 INFO L131 PetriNetUnfolder]: For 3010/3010 co-relation queries the response was YES. [2023-08-30 15:52:11,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37871 conditions, 17496 events. 12680/17496 cut-off events. For 3010/3010 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 103097 event pairs, 5850 based on Foata normal form. 430/10368 useless extension candidates. Maximal degree in co-relation 37858. Up to 11300 conditions per place. [2023-08-30 15:52:11,291 INFO L137 encePairwiseOnDemand]: 358/365 looper letters, 120 selfloop transitions, 12 changer transitions 0/134 dead transitions. [2023-08-30 15:52:11,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 134 transitions, 668 flow [2023-08-30 15:52:11,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:52:11,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:52:11,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1241 transitions. [2023-08-30 15:52:11,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2023-08-30 15:52:11,294 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1241 transitions. [2023-08-30 15:52:11,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1241 transitions. [2023-08-30 15:52:11,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:11,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1241 transitions. [2023-08-30 15:52:11,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 177.28571428571428) internal successors, (1241), 7 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:11,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:11,298 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:11,298 INFO L175 Difference]: Start difference. First operand has 46 places, 47 transitions, 179 flow. Second operand 7 states and 1241 transitions. [2023-08-30 15:52:11,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 134 transitions, 668 flow [2023-08-30 15:52:11,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 134 transitions, 664 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:52:11,304 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 236 flow [2023-08-30 15:52:11,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-08-30 15:52:11,304 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2023-08-30 15:52:11,304 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 236 flow [2023-08-30 15:52:11,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:11,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:11,305 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:52:11,309 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 15:52:11,509 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 15:52:11,509 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:11,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:11,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1299441574, now seen corresponding path program 1 times [2023-08-30 15:52:11,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:11,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532123528] [2023-08-30 15:52:11,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:11,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:52:11,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:11,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532123528] [2023-08-30 15:52:11,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532123528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:52:11,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:52:11,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:52:11,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355253027] [2023-08-30 15:52:11,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:52:11,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:52:11,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:11,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:52:11,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:52:11,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 365 [2023-08-30 15:52:11,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:11,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:11,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 365 [2023-08-30 15:52:11,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:12,179 INFO L130 PetriNetUnfolder]: 7971/10985 cut-off events. [2023-08-30 15:52:12,179 INFO L131 PetriNetUnfolder]: For 2542/3028 co-relation queries the response was YES. [2023-08-30 15:52:12,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24254 conditions, 10985 events. 7971/10985 cut-off events. For 2542/3028 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 61206 event pairs, 5115 based on Foata normal form. 487/6546 useless extension candidates. Maximal degree in co-relation 24237. Up to 10028 conditions per place. [2023-08-30 15:52:12,215 INFO L137 encePairwiseOnDemand]: 360/365 looper letters, 59 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2023-08-30 15:52:12,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 411 flow [2023-08-30 15:52:12,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:52:12,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:52:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 703 transitions. [2023-08-30 15:52:12,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4815068493150685 [2023-08-30 15:52:12,217 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 703 transitions. [2023-08-30 15:52:12,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 703 transitions. [2023-08-30 15:52:12,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:12,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 703 transitions. [2023-08-30 15:52:12,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:12,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 365.0) internal successors, (1825), 5 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:12,221 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 365.0) internal successors, (1825), 5 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:12,221 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 236 flow. Second operand 4 states and 703 transitions. [2023-08-30 15:52:12,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 411 flow [2023-08-30 15:52:12,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 72 transitions, 400 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 15:52:12,223 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 228 flow [2023-08-30 15:52:12,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-08-30 15:52:12,224 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2023-08-30 15:52:12,224 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 228 flow [2023-08-30 15:52:12,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:12,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:12,224 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 15:52:12,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 15:52:12,224 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:12,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:12,225 INFO L85 PathProgramCache]: Analyzing trace with hash -890786865, now seen corresponding path program 1 times [2023-08-30 15:52:12,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:12,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205264741] [2023-08-30 15:52:12,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:12,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:52:12,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:12,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205264741] [2023-08-30 15:52:12,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205264741] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:52:12,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661194382] [2023-08-30 15:52:12,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:12,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:52:12,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:52:12,296 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 15:52:12,300 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 15:52:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:12,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 15:52:12,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:52:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:52:12,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:52:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:52:12,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661194382] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:52:12,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:52:12,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-08-30 15:52:12,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515095844] [2023-08-30 15:52:12,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:52:12,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:52:12,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:12,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:52:12,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:52:12,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 365 [2023-08-30 15:52:12,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 228 flow. Second operand has 14 states, 14 states have (on average 160.28571428571428) internal successors, (2244), 14 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:12,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:12,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 365 [2023-08-30 15:52:12,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:13,663 INFO L130 PetriNetUnfolder]: 9336/12866 cut-off events. [2023-08-30 15:52:13,664 INFO L131 PetriNetUnfolder]: For 1852/2419 co-relation queries the response was YES. [2023-08-30 15:52:13,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27984 conditions, 12866 events. 9336/12866 cut-off events. For 1852/2419 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 72515 event pairs, 5962 based on Foata normal form. 568/7772 useless extension candidates. Maximal degree in co-relation 27967. Up to 7512 conditions per place. [2023-08-30 15:52:13,719 INFO L137 encePairwiseOnDemand]: 358/365 looper letters, 106 selfloop transitions, 16 changer transitions 0/126 dead transitions. [2023-08-30 15:52:13,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 126 transitions, 679 flow [2023-08-30 15:52:13,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 15:52:13,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 15:52:13,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1706 transitions. [2023-08-30 15:52:13,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673972602739726 [2023-08-30 15:52:13,723 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1706 transitions. [2023-08-30 15:52:13,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1706 transitions. [2023-08-30 15:52:13,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:13,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1706 transitions. [2023-08-30 15:52:13,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 170.6) internal successors, (1706), 10 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:13,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 365.0) internal successors, (4015), 11 states have internal predecessors, (4015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:13,730 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 365.0) internal successors, (4015), 11 states have internal predecessors, (4015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:13,731 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 228 flow. Second operand 10 states and 1706 transitions. [2023-08-30 15:52:13,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 126 transitions, 679 flow [2023-08-30 15:52:13,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 126 transitions, 660 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:52:13,733 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 290 flow [2023-08-30 15:52:13,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-08-30 15:52:13,734 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-08-30 15:52:13,734 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 290 flow [2023-08-30 15:52:13,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 160.28571428571428) internal successors, (2244), 14 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:13,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:13,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:52:13,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:52:13,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:52:13,940 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:13,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:13,940 INFO L85 PathProgramCache]: Analyzing trace with hash 105030115, now seen corresponding path program 1 times [2023-08-30 15:52:13,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:13,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78547453] [2023-08-30 15:52:13,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:13,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:13,973 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 15:52:13,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:13,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78547453] [2023-08-30 15:52:13,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78547453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:52:13,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:52:13,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:52:13,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011043045] [2023-08-30 15:52:13,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:52:13,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:52:13,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:13,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:52:13,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:52:13,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-08-30 15:52:13,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:13,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:13,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-08-30 15:52:13,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:14,775 INFO L130 PetriNetUnfolder]: 13854/19172 cut-off events. [2023-08-30 15:52:14,776 INFO L131 PetriNetUnfolder]: For 5368/6735 co-relation queries the response was YES. [2023-08-30 15:52:14,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42641 conditions, 19172 events. 13854/19172 cut-off events. For 5368/6735 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 112902 event pairs, 5628 based on Foata normal form. 1367/13099 useless extension candidates. Maximal degree in co-relation 42620. Up to 12611 conditions per place. [2023-08-30 15:52:14,862 INFO L137 encePairwiseOnDemand]: 361/365 looper letters, 69 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-30 15:52:14,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 492 flow [2023-08-30 15:52:14,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:52:14,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:52:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 567 transitions. [2023-08-30 15:52:14,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178082191780822 [2023-08-30 15:52:14,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 567 transitions. [2023-08-30 15:52:14,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 567 transitions. [2023-08-30 15:52:14,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:14,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 567 transitions. [2023-08-30 15:52:14,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:14,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:14,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:14,866 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 290 flow. Second operand 3 states and 567 transitions. [2023-08-30 15:52:14,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 492 flow [2023-08-30 15:52:14,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 461 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 15:52:14,870 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 273 flow [2023-08-30 15:52:14,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-08-30 15:52:14,870 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-08-30 15:52:14,870 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 273 flow [2023-08-30 15:52:14,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:14,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:14,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:52:14,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 15:52:14,871 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:14,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:14,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1852484239, now seen corresponding path program 1 times [2023-08-30 15:52:14,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:14,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118390337] [2023-08-30 15:52:14,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:14,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:14,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:52:14,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:14,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118390337] [2023-08-30 15:52:14,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118390337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:52:14,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:52:14,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:52:14,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598081999] [2023-08-30 15:52:14,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:52:14,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:52:14,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:14,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:52:14,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:52:14,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-08-30 15:52:14,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:14,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:14,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-08-30 15:52:14,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:15,868 INFO L130 PetriNetUnfolder]: 12826/17706 cut-off events. [2023-08-30 15:52:15,868 INFO L131 PetriNetUnfolder]: For 3885/3885 co-relation queries the response was YES. [2023-08-30 15:52:15,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42902 conditions, 17706 events. 12826/17706 cut-off events. For 3885/3885 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 107476 event pairs, 807 based on Foata normal form. 0/11182 useless extension candidates. Maximal degree in co-relation 42881. Up to 15808 conditions per place. [2023-08-30 15:52:15,920 INFO L137 encePairwiseOnDemand]: 363/365 looper letters, 66 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-30 15:52:15,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 451 flow [2023-08-30 15:52:15,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:52:15,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:52:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2023-08-30 15:52:15,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123287671232877 [2023-08-30 15:52:15,922 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2023-08-30 15:52:15,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2023-08-30 15:52:15,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:15,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2023-08-30 15:52:15,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:15,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:15,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:15,924 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 273 flow. Second operand 3 states and 561 transitions. [2023-08-30 15:52:15,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 451 flow [2023-08-30 15:52:15,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 448 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:52:15,933 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 271 flow [2023-08-30 15:52:15,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-08-30 15:52:15,933 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-08-30 15:52:15,934 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 271 flow [2023-08-30 15:52:15,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:15,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:15,934 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-30 15:52:15,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 15:52:15,934 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:15,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:15,934 INFO L85 PathProgramCache]: Analyzing trace with hash -68391738, now seen corresponding path program 2 times [2023-08-30 15:52:15,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:15,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216666317] [2023-08-30 15:52:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:15,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:15,998 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:52:15,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:15,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216666317] [2023-08-30 15:52:15,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216666317] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:52:15,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584380879] [2023-08-30 15:52:15,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:52:15,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:52:15,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:52:15,999 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:52:16,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:52:16,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:52:16,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:52:16,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:52:16,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:52:16,081 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 15:52:16,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:52:16,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584380879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:52:16,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:52:16,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-30 15:52:16,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175790271] [2023-08-30 15:52:16,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:52:16,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:52:16,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:16,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:52:16,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 15:52:16,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 365 [2023-08-30 15:52:16,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:16,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:16,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 365 [2023-08-30 15:52:16,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:16,701 INFO L130 PetriNetUnfolder]: 9691/13566 cut-off events. [2023-08-30 15:52:16,701 INFO L131 PetriNetUnfolder]: For 5312/6514 co-relation queries the response was YES. [2023-08-30 15:52:16,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30945 conditions, 13566 events. 9691/13566 cut-off events. For 5312/6514 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 80041 event pairs, 6534 based on Foata normal form. 1536/10032 useless extension candidates. Maximal degree in co-relation 30924. Up to 13472 conditions per place. [2023-08-30 15:52:16,754 INFO L137 encePairwiseOnDemand]: 362/365 looper letters, 46 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-08-30 15:52:16,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 51 transitions, 346 flow [2023-08-30 15:52:16,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:52:16,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:52:16,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-08-30 15:52:16,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849315068493151 [2023-08-30 15:52:16,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-08-30 15:52:16,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-08-30 15:52:16,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:16,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-08-30 15:52:16,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:16,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:16,758 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:16,758 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 271 flow. Second operand 3 states and 531 transitions. [2023-08-30 15:52:16,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 51 transitions, 346 flow [2023-08-30 15:52:16,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 320 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-30 15:52:16,760 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 228 flow [2023-08-30 15:52:16,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-08-30 15:52:16,760 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2023-08-30 15:52:16,761 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 228 flow [2023-08-30 15:52:16,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:16,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:16,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:52:16,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:52:16,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 15:52:16,965 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:16,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:16,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1973026507, now seen corresponding path program 1 times [2023-08-30 15:52:16,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:16,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610981265] [2023-08-30 15:52:16,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:16,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:16,990 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 15:52:16,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:16,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610981265] [2023-08-30 15:52:16,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610981265] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:52:16,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:52:16,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:52:16,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016848605] [2023-08-30 15:52:16,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:52:16,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:52:16,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:16,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:52:16,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:52:16,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-08-30 15:52:16,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:16,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:16,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-08-30 15:52:16,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:17,788 INFO L130 PetriNetUnfolder]: 13226/18817 cut-off events. [2023-08-30 15:52:17,789 INFO L131 PetriNetUnfolder]: For 5192/6314 co-relation queries the response was YES. [2023-08-30 15:52:17,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43077 conditions, 18817 events. 13226/18817 cut-off events. For 5192/6314 co-relation queries the response was YES. Maximal size of possible extension queue 887. Compared 117496 event pairs, 6714 based on Foata normal form. 1122/13923 useless extension candidates. Maximal degree in co-relation 43060. Up to 12722 conditions per place. [2023-08-30 15:52:17,842 INFO L137 encePairwiseOnDemand]: 361/365 looper letters, 64 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-30 15:52:17,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 412 flow [2023-08-30 15:52:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:52:17,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:52:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 560 transitions. [2023-08-30 15:52:17,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114155251141552 [2023-08-30 15:52:17,844 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 560 transitions. [2023-08-30 15:52:17,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 560 transitions. [2023-08-30 15:52:17,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:17,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 560 transitions. [2023-08-30 15:52:17,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:17,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:17,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:17,846 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 228 flow. Second operand 3 states and 560 transitions. [2023-08-30 15:52:17,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 412 flow [2023-08-30 15:52:17,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 411 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:52:17,848 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 241 flow [2023-08-30 15:52:17,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-08-30 15:52:17,849 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2023-08-30 15:52:17,849 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 241 flow [2023-08-30 15:52:17,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:17,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:17,849 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:52:17,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 15:52:17,849 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:17,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:17,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2145229933, now seen corresponding path program 1 times [2023-08-30 15:52:17,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:17,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140092508] [2023-08-30 15:52:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:17,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:52:17,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:17,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140092508] [2023-08-30 15:52:17,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140092508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:52:17,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:52:17,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 15:52:17,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566673454] [2023-08-30 15:52:17,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:52:17,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:52:17,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:17,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:52:17,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:52:17,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 365 [2023-08-30 15:52:17,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 241 flow. Second operand has 5 states, 5 states have (on average 162.2) internal successors, (811), 5 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:17,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:17,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 365 [2023-08-30 15:52:17,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:18,818 INFO L130 PetriNetUnfolder]: 14947/20788 cut-off events. [2023-08-30 15:52:18,818 INFO L131 PetriNetUnfolder]: For 6752/7767 co-relation queries the response was YES. [2023-08-30 15:52:18,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50694 conditions, 20788 events. 14947/20788 cut-off events. For 6752/7767 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 122548 event pairs, 10379 based on Foata normal form. 1015/14785 useless extension candidates. Maximal degree in co-relation 50676. Up to 20162 conditions per place. [2023-08-30 15:52:18,910 INFO L137 encePairwiseOnDemand]: 358/365 looper letters, 69 selfloop transitions, 12 changer transitions 2/86 dead transitions. [2023-08-30 15:52:18,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 86 transitions, 510 flow [2023-08-30 15:52:18,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:52:18,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:52:18,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 866 transitions. [2023-08-30 15:52:18,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745205479452055 [2023-08-30 15:52:18,912 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 866 transitions. [2023-08-30 15:52:18,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 866 transitions. [2023-08-30 15:52:18,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:18,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 866 transitions. [2023-08-30 15:52:18,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.2) internal successors, (866), 5 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:18,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:18,916 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:18,916 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 241 flow. Second operand 5 states and 866 transitions. [2023-08-30 15:52:18,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 86 transitions, 510 flow [2023-08-30 15:52:18,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 86 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:52:18,922 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 276 flow [2023-08-30 15:52:18,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-08-30 15:52:18,923 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-08-30 15:52:18,923 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 276 flow [2023-08-30 15:52:18,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 162.2) internal successors, (811), 5 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:18,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:18,924 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:52:18,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 15:52:18,924 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:18,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:18,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1562737787, now seen corresponding path program 1 times [2023-08-30 15:52:18,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:18,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136519398] [2023-08-30 15:52:18,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:18,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:52:18,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:18,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136519398] [2023-08-30 15:52:18,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136519398] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:52:18,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406106220] [2023-08-30 15:52:18,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:18,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:52:18,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:52:18,964 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:52:18,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:52:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:19,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:52:19,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:52:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:52:19,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:52:19,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:52:19,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406106220] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:52:19,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:52:19,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-08-30 15:52:19,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241729316] [2023-08-30 15:52:19,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:52:19,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:52:19,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:19,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:52:19,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:52:19,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 365 [2023-08-30 15:52:19,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 276 flow. Second operand has 13 states, 13 states have (on average 157.53846153846155) internal successors, (2048), 13 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:19,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:19,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 365 [2023-08-30 15:52:19,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:20,446 INFO L130 PetriNetUnfolder]: 11991/16788 cut-off events. [2023-08-30 15:52:20,446 INFO L131 PetriNetUnfolder]: For 6742/7582 co-relation queries the response was YES. [2023-08-30 15:52:20,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41634 conditions, 16788 events. 11991/16788 cut-off events. For 6742/7582 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 102225 event pairs, 854 based on Foata normal form. 1072/13620 useless extension candidates. Maximal degree in co-relation 41613. Up to 4236 conditions per place. [2023-08-30 15:52:20,512 INFO L137 encePairwiseOnDemand]: 355/365 looper letters, 200 selfloop transitions, 22 changer transitions 9/234 dead transitions. [2023-08-30 15:52:20,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 234 transitions, 1291 flow [2023-08-30 15:52:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 15:52:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 15:52:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2530 transitions. [2023-08-30 15:52:20,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621004566210046 [2023-08-30 15:52:20,516 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2530 transitions. [2023-08-30 15:52:20,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2530 transitions. [2023-08-30 15:52:20,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:20,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2530 transitions. [2023-08-30 15:52:20,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 168.66666666666666) internal successors, (2530), 15 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:20,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 365.0) internal successors, (5840), 16 states have internal predecessors, (5840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:20,525 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 365.0) internal successors, (5840), 16 states have internal predecessors, (5840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:20,525 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 276 flow. Second operand 15 states and 2530 transitions. [2023-08-30 15:52:20,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 234 transitions, 1291 flow [2023-08-30 15:52:20,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 234 transitions, 1272 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:52:20,538 INFO L231 Difference]: Finished difference. Result has 76 places, 58 transitions, 320 flow [2023-08-30 15:52:20,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=320, PETRI_PLACES=76, PETRI_TRANSITIONS=58} [2023-08-30 15:52:20,539 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2023-08-30 15:52:20,539 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 58 transitions, 320 flow [2023-08-30 15:52:20,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 157.53846153846155) internal successors, (2048), 13 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:20,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:20,539 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:52:20,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 15:52:20,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:52:20,744 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:20,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:20,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1997842472, now seen corresponding path program 1 times [2023-08-30 15:52:20,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:20,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528775974] [2023-08-30 15:52:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:20,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:52:20,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:20,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528775974] [2023-08-30 15:52:20,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528775974] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:52:20,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847912083] [2023-08-30 15:52:20,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:20,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:52:20,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:52:20,781 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:52:20,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:52:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:20,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:52:20,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:52:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:52:20,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:52:20,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847912083] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:52:20,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:52:20,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 15:52:20,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924467199] [2023-08-30 15:52:20,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:52:20,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:52:20,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:20,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:52:20,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:52:20,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 365 [2023-08-30 15:52:20,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 58 transitions, 320 flow. Second operand has 5 states, 5 states have (on average 162.6) internal successors, (813), 5 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:20,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:20,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 365 [2023-08-30 15:52:20,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:21,599 INFO L130 PetriNetUnfolder]: 9368/13465 cut-off events. [2023-08-30 15:52:21,599 INFO L131 PetriNetUnfolder]: For 9888/10565 co-relation queries the response was YES. [2023-08-30 15:52:21,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36219 conditions, 13465 events. 9368/13465 cut-off events. For 9888/10565 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 80356 event pairs, 7108 based on Foata normal form. 677/11280 useless extension candidates. Maximal degree in co-relation 36197. Up to 13318 conditions per place. [2023-08-30 15:52:21,656 INFO L137 encePairwiseOnDemand]: 357/365 looper letters, 41 selfloop transitions, 8 changer transitions 27/79 dead transitions. [2023-08-30 15:52:21,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 528 flow [2023-08-30 15:52:21,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:52:21,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:52:21,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 856 transitions. [2023-08-30 15:52:21,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.469041095890411 [2023-08-30 15:52:21,658 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 856 transitions. [2023-08-30 15:52:21,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 856 transitions. [2023-08-30 15:52:21,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:21,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 856 transitions. [2023-08-30 15:52:21,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:21,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:21,661 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:21,661 INFO L175 Difference]: Start difference. First operand has 76 places, 58 transitions, 320 flow. Second operand 5 states and 856 transitions. [2023-08-30 15:52:21,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 528 flow [2023-08-30 15:52:21,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 496 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-30 15:52:21,672 INFO L231 Difference]: Finished difference. Result has 77 places, 52 transitions, 267 flow [2023-08-30 15:52:21,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=77, PETRI_TRANSITIONS=52} [2023-08-30 15:52:21,673 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 36 predicate places. [2023-08-30 15:52:21,673 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 52 transitions, 267 flow [2023-08-30 15:52:21,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 162.6) internal successors, (813), 5 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:21,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:21,674 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:52:21,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 15:52:21,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:52:21,878 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:21,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:21,878 INFO L85 PathProgramCache]: Analyzing trace with hash -568638646, now seen corresponding path program 1 times [2023-08-30 15:52:21,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:21,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316218010] [2023-08-30 15:52:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:21,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:52:21,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:21,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316218010] [2023-08-30 15:52:21,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316218010] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:52:21,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405508471] [2023-08-30 15:52:21,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:21,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:52:21,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:52:21,927 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:52:21,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 15:52:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:22,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:52:22,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:52:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:52:22,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:52:22,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:52:22,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405508471] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:52:22,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:52:22,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-08-30 15:52:22,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546245377] [2023-08-30 15:52:22,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:52:22,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:52:22,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:22,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:52:22,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:52:22,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 365 [2023-08-30 15:52:22,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 52 transitions, 267 flow. Second operand has 13 states, 13 states have (on average 157.84615384615384) internal successors, (2052), 13 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:22,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:22,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 365 [2023-08-30 15:52:22,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:23,268 INFO L130 PetriNetUnfolder]: 10609/15067 cut-off events. [2023-08-30 15:52:23,268 INFO L131 PetriNetUnfolder]: For 10392/11083 co-relation queries the response was YES. [2023-08-30 15:52:23,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42641 conditions, 15067 events. 10609/15067 cut-off events. For 10392/11083 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 90216 event pairs, 2405 based on Foata normal form. 827/13622 useless extension candidates. Maximal degree in co-relation 42617. Up to 4395 conditions per place. [2023-08-30 15:52:23,330 INFO L137 encePairwiseOnDemand]: 353/365 looper letters, 93 selfloop transitions, 15 changer transitions 76/186 dead transitions. [2023-08-30 15:52:23,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 186 transitions, 1114 flow [2023-08-30 15:52:23,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 15:52:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 15:52:23,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2324 transitions. [2023-08-30 15:52:23,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547945205479452 [2023-08-30 15:52:23,334 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2324 transitions. [2023-08-30 15:52:23,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2324 transitions. [2023-08-30 15:52:23,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:23,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2324 transitions. [2023-08-30 15:52:23,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:23,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 365.0) internal successors, (5475), 15 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:23,342 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 365.0) internal successors, (5475), 15 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:23,342 INFO L175 Difference]: Start difference. First operand has 77 places, 52 transitions, 267 flow. Second operand 14 states and 2324 transitions. [2023-08-30 15:52:23,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 186 transitions, 1114 flow [2023-08-30 15:52:23,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 186 transitions, 1028 flow, removed 31 selfloop flow, removed 7 redundant places. [2023-08-30 15:52:23,410 INFO L231 Difference]: Finished difference. Result has 76 places, 48 transitions, 254 flow [2023-08-30 15:52:23,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=254, PETRI_PLACES=76, PETRI_TRANSITIONS=48} [2023-08-30 15:52:23,410 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2023-08-30 15:52:23,411 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 48 transitions, 254 flow [2023-08-30 15:52:23,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 157.84615384615384) internal successors, (2052), 13 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:23,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:23,411 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:52:23,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 15:52:23,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 15:52:23,616 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:23,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:23,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1031856145, now seen corresponding path program 1 times [2023-08-30 15:52:23,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:23,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817358557] [2023-08-30 15:52:23,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:23,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:23,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:52:23,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:23,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817358557] [2023-08-30 15:52:23,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817358557] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:52:23,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163048600] [2023-08-30 15:52:23,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:23,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:52:23,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:52:23,695 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:52:23,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 15:52:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:23,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:52:23,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:52:23,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:52:23,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:52:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:52:23,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163048600] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:52:23,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:52:23,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 15:52:23,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349696327] [2023-08-30 15:52:23,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:52:23,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:52:23,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:23,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:52:23,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:52:23,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-08-30 15:52:23,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 48 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:23,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:23,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-08-30 15:52:23,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:25,388 INFO L130 PetriNetUnfolder]: 22603/31115 cut-off events. [2023-08-30 15:52:25,388 INFO L131 PetriNetUnfolder]: For 26408/28367 co-relation queries the response was YES. [2023-08-30 15:52:25,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92332 conditions, 31115 events. 22603/31115 cut-off events. For 26408/28367 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 190135 event pairs, 4353 based on Foata normal form. 1959/29282 useless extension candidates. Maximal degree in co-relation 92310. Up to 8925 conditions per place. [2023-08-30 15:52:25,532 INFO L137 encePairwiseOnDemand]: 362/365 looper letters, 135 selfloop transitions, 5 changer transitions 0/142 dead transitions. [2023-08-30 15:52:25,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 142 transitions, 938 flow [2023-08-30 15:52:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:52:25,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:52:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1129 transitions. [2023-08-30 15:52:25,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155251141552512 [2023-08-30 15:52:25,535 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1129 transitions. [2023-08-30 15:52:25,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1129 transitions. [2023-08-30 15:52:25,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:25,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1129 transitions. [2023-08-30 15:52:25,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:25,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 365.0) internal successors, (2555), 7 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:25,539 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 365.0) internal successors, (2555), 7 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:25,539 INFO L175 Difference]: Start difference. First operand has 76 places, 48 transitions, 254 flow. Second operand 6 states and 1129 transitions. [2023-08-30 15:52:25,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 142 transitions, 938 flow [2023-08-30 15:52:25,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 142 transitions, 868 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-08-30 15:52:25,579 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 248 flow [2023-08-30 15:52:25,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2023-08-30 15:52:25,579 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2023-08-30 15:52:25,579 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 248 flow [2023-08-30 15:52:25,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:25,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:25,580 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:52:25,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 15:52:25,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 15:52:25,784 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:25,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:25,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1755100232, now seen corresponding path program 1 times [2023-08-30 15:52:25,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:25,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148178740] [2023-08-30 15:52:25,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:25,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:52:25,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:25,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148178740] [2023-08-30 15:52:25,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148178740] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:52:25,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:52:25,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:52:25,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483633872] [2023-08-30 15:52:25,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:52:25,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:52:25,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:25,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:52:25,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:52:25,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-08-30 15:52:25,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:25,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:25,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-08-30 15:52:25,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:27,156 INFO L130 PetriNetUnfolder]: 18151/25583 cut-off events. [2023-08-30 15:52:27,156 INFO L131 PetriNetUnfolder]: For 26558/27713 co-relation queries the response was YES. [2023-08-30 15:52:27,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73772 conditions, 25583 events. 18151/25583 cut-off events. For 26558/27713 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 159860 event pairs, 1305 based on Foata normal form. 2427/25442 useless extension candidates. Maximal degree in co-relation 73753. Up to 22944 conditions per place. [2023-08-30 15:52:27,267 INFO L137 encePairwiseOnDemand]: 363/365 looper letters, 63 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2023-08-30 15:52:27,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 66 transitions, 441 flow [2023-08-30 15:52:27,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:52:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:52:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2023-08-30 15:52:27,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041095890410959 [2023-08-30 15:52:27,269 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 552 transitions. [2023-08-30 15:52:27,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 552 transitions. [2023-08-30 15:52:27,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:27,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 552 transitions. [2023-08-30 15:52:27,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:27,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:27,272 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:27,272 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 248 flow. Second operand 3 states and 552 transitions. [2023-08-30 15:52:27,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 66 transitions, 441 flow [2023-08-30 15:52:27,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 415 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-30 15:52:27,351 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 217 flow [2023-08-30 15:52:27,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=217, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2023-08-30 15:52:27,351 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2023-08-30 15:52:27,352 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 217 flow [2023-08-30 15:52:27,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:27,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:27,352 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:52:27,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 15:52:27,352 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:27,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:27,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1270755781, now seen corresponding path program 2 times [2023-08-30 15:52:27,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:27,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672795416] [2023-08-30 15:52:27,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:27,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:52:27,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:27,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672795416] [2023-08-30 15:52:27,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672795416] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:52:27,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547644738] [2023-08-30 15:52:27,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:52:27,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:52:27,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:52:27,405 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:52:27,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 15:52:27,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:52:27,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:52:27,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:52:27,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:52:27,519 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:52:27,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:52:27,540 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:52:27,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547644738] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:52:27,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:52:27,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2, 2] total 6 [2023-08-30 15:52:27,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623532307] [2023-08-30 15:52:27,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:52:27,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:52:27,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:27,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:52:27,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:52:27,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 365 [2023-08-30 15:52:27,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 217 flow. Second operand has 7 states, 7 states have (on average 171.57142857142858) internal successors, (1201), 7 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:27,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:27,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 365 [2023-08-30 15:52:27,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:29,665 INFO L130 PetriNetUnfolder]: 25039/35015 cut-off events. [2023-08-30 15:52:29,665 INFO L131 PetriNetUnfolder]: For 25550/27089 co-relation queries the response was YES. [2023-08-30 15:52:29,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95009 conditions, 35015 events. 25039/35015 cut-off events. For 25550/27089 co-relation queries the response was YES. Maximal size of possible extension queue 1057. Compared 218924 event pairs, 3849 based on Foata normal form. 1539/33350 useless extension candidates. Maximal degree in co-relation 94990. Up to 8028 conditions per place. [2023-08-30 15:52:29,861 INFO L137 encePairwiseOnDemand]: 359/365 looper letters, 97 selfloop transitions, 8 changer transitions 20/127 dead transitions. [2023-08-30 15:52:29,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 127 transitions, 779 flow [2023-08-30 15:52:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:52:29,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:52:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1256 transitions. [2023-08-30 15:52:29,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49158512720156555 [2023-08-30 15:52:29,864 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1256 transitions. [2023-08-30 15:52:29,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1256 transitions. [2023-08-30 15:52:29,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:29,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1256 transitions. [2023-08-30 15:52:29,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.42857142857142) internal successors, (1256), 7 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:29,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:29,868 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:29,868 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 217 flow. Second operand 7 states and 1256 transitions. [2023-08-30 15:52:29,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 127 transitions, 779 flow [2023-08-30 15:52:29,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 127 transitions, 778 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:52:29,974 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 232 flow [2023-08-30 15:52:29,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2023-08-30 15:52:29,975 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2023-08-30 15:52:29,975 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 232 flow [2023-08-30 15:52:29,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 171.57142857142858) internal successors, (1201), 7 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:29,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:52:29,975 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:52:29,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 15:52:30,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:52:30,180 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 15:52:30,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:52:30,180 INFO L85 PathProgramCache]: Analyzing trace with hash 455261473, now seen corresponding path program 2 times [2023-08-30 15:52:30,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:52:30,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119562832] [2023-08-30 15:52:30,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:52:30,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:52:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:52:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-08-30 15:52:30,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:52:30,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119562832] [2023-08-30 15:52:30,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119562832] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:52:30,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014226638] [2023-08-30 15:52:30,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:52:30,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:52:30,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:52:30,275 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:52:30,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 15:52:30,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:52:30,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:52:30,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:52:30,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:52:30,391 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-30 15:52:30,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:52:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-30 15:52:30,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014226638] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:52:30,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:52:30,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 2, 2] total 7 [2023-08-30 15:52:30,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35150669] [2023-08-30 15:52:30,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:52:30,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 15:52:30,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:52:30,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 15:52:30,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 15:52:30,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 365 [2023-08-30 15:52:30,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 232 flow. Second operand has 9 states, 9 states have (on average 158.0) internal successors, (1422), 9 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:30,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:52:30,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 365 [2023-08-30 15:52:30,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:52:32,469 INFO L130 PetriNetUnfolder]: 28510/38915 cut-off events. [2023-08-30 15:52:32,470 INFO L131 PetriNetUnfolder]: For 39142/42124 co-relation queries the response was YES. [2023-08-30 15:52:32,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114915 conditions, 38915 events. 28510/38915 cut-off events. For 39142/42124 co-relation queries the response was YES. Maximal size of possible extension queue 1191. Compared 234521 event pairs, 5582 based on Foata normal form. 3922/38905 useless extension candidates. Maximal degree in co-relation 114894. Up to 12732 conditions per place. [2023-08-30 15:52:32,631 INFO L137 encePairwiseOnDemand]: 356/365 looper letters, 0 selfloop transitions, 0 changer transitions 161/161 dead transitions. [2023-08-30 15:52:32,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 161 transitions, 1051 flow [2023-08-30 15:52:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 15:52:32,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 15:52:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2116 transitions. [2023-08-30 15:52:32,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4459430979978925 [2023-08-30 15:52:32,633 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2116 transitions. [2023-08-30 15:52:32,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2116 transitions. [2023-08-30 15:52:32,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:52:32,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2116 transitions. [2023-08-30 15:52:32,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 162.76923076923077) internal successors, (2116), 13 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:32,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 365.0) internal successors, (5110), 14 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:32,638 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 365.0) internal successors, (5110), 14 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:32,639 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 232 flow. Second operand 13 states and 2116 transitions. [2023-08-30 15:52:32,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 161 transitions, 1051 flow [2023-08-30 15:52:32,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 161 transitions, 938 flow, removed 26 selfloop flow, removed 9 redundant places. [2023-08-30 15:52:32,914 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2023-08-30 15:52:32,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2023-08-30 15:52:32,915 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-08-30 15:52:32,915 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2023-08-30 15:52:32,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 158.0) internal successors, (1422), 9 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:52:32,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-08-30 15:52:32,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-30 15:52:32,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-30 15:52:32,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-30 15:52:32,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-30 15:52:32,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-30 15:52:32,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-30 15:52:32,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-30 15:52:32,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-08-30 15:52:32,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-08-30 15:52:32,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-08-30 15:52:32,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 19 remaining) [2023-08-30 15:52:32,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 19 remaining) [2023-08-30 15:52:32,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-30 15:52:32,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-30 15:52:32,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-30 15:52:32,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-30 15:52:32,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-30 15:52:32,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-30 15:52:32,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 15:52:33,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:52:33,123 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:52:33,127 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 15:52:33,127 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 15:52:33,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:52:33 BasicIcfg [2023-08-30 15:52:33,128 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 15:52:33,129 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 15:52:33,129 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 15:52:33,130 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 15:52:33,130 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:52:01" (3/4) ... [2023-08-30 15:52:33,131 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 15:52:33,134 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 15:52:33,134 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 15:52:33,135 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 15:52:33,137 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2023-08-30 15:52:33,137 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 15:52:33,138 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 15:52:33,138 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 15:52:33,160 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 15:52:33,161 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 15:52:33,161 INFO L158 Benchmark]: Toolchain (without parser) took 32457.65ms. Allocated memory was 65.0MB in the beginning and 4.8GB in the end (delta: 4.7GB). Free memory was 43.0MB in the beginning and 2.9GB in the end (delta: -2.9GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2023-08-30 15:52:33,161 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 52.4MB. Free memory is still 30.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:52:33,161 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.50ms. Allocated memory is still 65.0MB. Free memory was 42.9MB in the beginning and 31.3MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 15:52:33,162 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.25ms. Allocated memory is still 65.0MB. Free memory was 31.1MB in the beginning and 29.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:52:33,162 INFO L158 Benchmark]: Boogie Preprocessor took 84.06ms. Allocated memory is still 65.0MB. Free memory was 29.3MB in the beginning and 45.5MB in the end (delta: -16.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 15:52:33,162 INFO L158 Benchmark]: RCFGBuilder took 460.50ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 45.3MB in the beginning and 57.6MB in the end (delta: -12.3MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2023-08-30 15:52:33,162 INFO L158 Benchmark]: TraceAbstraction took 31597.44ms. Allocated memory was 79.7MB in the beginning and 4.8GB in the end (delta: 4.7GB). Free memory was 56.9MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. [2023-08-30 15:52:33,163 INFO L158 Benchmark]: Witness Printer took 32.08ms. Allocated memory is still 4.8GB. Free memory was 3.0GB in the beginning and 2.9GB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 15:52:33,163 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 52.4MB. Free memory is still 30.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.50ms. Allocated memory is still 65.0MB. Free memory was 42.9MB in the beginning and 31.3MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.25ms. Allocated memory is still 65.0MB. Free memory was 31.1MB in the beginning and 29.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.06ms. Allocated memory is still 65.0MB. Free memory was 29.3MB in the beginning and 45.5MB in the end (delta: -16.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 460.50ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 45.3MB in the beginning and 57.6MB in the end (delta: -12.3MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. * TraceAbstraction took 31597.44ms. Allocated memory was 79.7MB in the beginning and 4.8GB in the end (delta: 4.7GB). Free memory was 56.9MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. * Witness Printer took 32.08ms. Allocated memory is still 4.8GB. Free memory was 3.0GB in the beginning and 2.9GB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 166 PlacesBefore, 41 PlacesAfterwards, 171 TransitionsBefore, 37 TransitionsAfterwards, 2680 CoEnabledTransitionPairs, 7 FixpointIterations, 88 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 6 ConcurrentYvCompositions, 9 ChoiceCompositions, 173 TotalNumberOfCompositions, 4485 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3188, independent: 3075, independent conditional: 0, independent unconditional: 3075, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1470, independent: 1445, independent conditional: 0, independent unconditional: 1445, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3188, independent: 1630, independent conditional: 0, independent unconditional: 1630, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 1470, unknown conditional: 0, unknown unconditional: 1470] , Statistics on independence cache: Total cache size (in pairs): 136, Positive cache size: 126, Positive conditional cache size: 0, Positive unconditional cache size: 126, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 224 locations, 19 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 31.5s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 22.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4120 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3492 mSDsluCounter, 1188 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 966 mSDsCounter, 235 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6160 IncrementalHoareTripleChecker+Invalid, 6395 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 235 mSolverCounterUnsat, 222 mSDtfsCounter, 6160 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 311 GetRequests, 172 SyntacticMatches, 6 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=320occurred in iteration=14, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 334 NumberOfCodeBlocks, 304 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 390 ConstructedInterpolants, 0 QuantifiedInterpolants, 1070 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1913 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 38 InterpolantComputations, 13 PerfectInterpolantSequences, 207/276 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 15:52:33,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE