./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.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/parallel-parallel-sum-1.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 54b834084fe1393c06cef2b14fb31f788537bd44a8744d5b4241cffc72e1d744 --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 15:09:49,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:09:49,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:09:49,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:09:49,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:09:49,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:09:49,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:09:49,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:09:49,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:09:50,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:09:50,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:09:50,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:09:50,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:09:50,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:09:50,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:09:50,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:09:50,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:09:50,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:09:50,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:09:50,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:09:50,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:09:50,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:09:50,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:09:50,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:09:50,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:09:50,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:09:50,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:09:50,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:09:50,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:09:50,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:09:50,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:09:50,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:09:50,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:09:50,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:09:50,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:09:50,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:09:50,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:09:50,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:09:50,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:09:50,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:09:50,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:09:50,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:09:50,078 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:09:50,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:09:50,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:09:50,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:09:50,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:09:50,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:09:50,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:09:50,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:09:50,082 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:09:50,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:09:50,083 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:09:50,083 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:09:50,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:09:50,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:09:50,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:09:50,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:09:50,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:09:50,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:09:50,085 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:09:50,085 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:09:50,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:09:50,085 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:09:50,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:09:50,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:09:50,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:09:50,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:09:50,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:09:50,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:09:50,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:09:50,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:09:50,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:09:50,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:09:50,087 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:09:50,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:09:50,088 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:09:50,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:09:50,088 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:09:50,088 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b834084fe1393c06cef2b14fb31f788537bd44a8744d5b4241cffc72e1d744 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:09:50,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:09:50,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:09:50,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:09:50,447 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:09:50,447 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:09:50,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2023-08-30 15:09:51,723 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:09:51,919 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:09:51,920 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2023-08-30 15:09:51,926 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cc159087/2f56b49168e54bfba39c824f8d7fab58/FLAG8ffe4f5cf [2023-08-30 15:09:51,940 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cc159087/2f56b49168e54bfba39c824f8d7fab58 [2023-08-30 15:09:51,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:09:51,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:09:51,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:09:51,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:09:51,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:09:51,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:09:51" (1/1) ... [2023-08-30 15:09:51,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b95ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:09:51, skipping insertion in model container [2023-08-30 15:09:51,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:09:51" (1/1) ... [2023-08-30 15:09:51,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:09:51,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:09:52,187 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/parallel-parallel-sum-1.wvr.c[3642,3655] [2023-08-30 15:09:52,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:09:52,210 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:09:52,251 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/parallel-parallel-sum-1.wvr.c[3642,3655] [2023-08-30 15:09:52,259 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:09:52,271 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:09:52,272 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:09:52,277 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:09:52,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:09:52 WrapperNode [2023-08-30 15:09:52,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:09:52,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:09:52,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:09:52,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:09:52,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:09:52" (1/1) ... [2023-08-30 15:09:52,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:09:52" (1/1) ... [2023-08-30 15:09:52,351 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 379 [2023-08-30 15:09:52,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:09:52,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:09:52,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:09:52,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:09:52,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:09:52" (1/1) ... [2023-08-30 15:09:52,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:09:52" (1/1) ... [2023-08-30 15:09:52,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:09:52" (1/1) ... [2023-08-30 15:09:52,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:09:52" (1/1) ... [2023-08-30 15:09:52,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:09:52" (1/1) ... [2023-08-30 15:09:52,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:09:52" (1/1) ... [2023-08-30 15:09:52,411 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:09:52" (1/1) ... [2023-08-30 15:09:52,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:09:52" (1/1) ... [2023-08-30 15:09:52,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:09:52,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:09:52,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:09:52,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:09:52,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:09:52" (1/1) ... [2023-08-30 15:09:52,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:09:52,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:09:52,448 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 15:09:52,492 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 15:09:52,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:09:52,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:09:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:09:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:09:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:09:52,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:09:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:09:52,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:09:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:09:52,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:09:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 15:09:52,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 15:09:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:09:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:09:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:09:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:09:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:09:52,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:09:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:09:52,513 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 15:09:52,612 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:09:52,614 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:09:53,214 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:09:53,664 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:09:53,664 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-30 15:09:53,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:09:53 BoogieIcfgContainer [2023-08-30 15:09:53,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:09:53,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:09:53,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:09:53,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:09:53,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:09:51" (1/3) ... [2023-08-30 15:09:53,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104844af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:09:53, skipping insertion in model container [2023-08-30 15:09:53,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:09:52" (2/3) ... [2023-08-30 15:09:53,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104844af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:09:53, skipping insertion in model container [2023-08-30 15:09:53,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:09:53" (3/3) ... [2023-08-30 15:09:53,676 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2023-08-30 15:09:53,683 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:09:53,691 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:09:53,691 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-08-30 15:09:53,692 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:09:53,882 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 15:09:53,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 245 transitions, 522 flow [2023-08-30 15:09:54,043 INFO L130 PetriNetUnfolder]: 15/241 cut-off events. [2023-08-30 15:09:54,043 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 15:09:54,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 241 events. 15/241 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 283 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2023-08-30 15:09:54,050 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 245 transitions, 522 flow [2023-08-30 15:09:54,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 221 transitions, 463 flow [2023-08-30 15:09:54,063 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:09:54,075 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 221 transitions, 463 flow [2023-08-30 15:09:54,079 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 221 transitions, 463 flow [2023-08-30 15:09:54,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 221 transitions, 463 flow [2023-08-30 15:09:54,134 INFO L130 PetriNetUnfolder]: 14/221 cut-off events. [2023-08-30 15:09:54,135 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:09:54,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 221 events. 14/221 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 281 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2023-08-30 15:09:54,141 INFO L119 LiptonReduction]: Number of co-enabled transitions 6264 [2023-08-30 15:10:01,474 INFO L134 LiptonReduction]: Checked pairs total: 24784 [2023-08-30 15:10:01,474 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-08-30 15:10:01,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:10:01,490 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;@14aa2fae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:10:01,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2023-08-30 15:10:01,491 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 15:10:01,491 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:10:01,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:10:01,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 15:10:01,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-08-30 15:10:01,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:10:01,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1452, now seen corresponding path program 1 times [2023-08-30 15:10:01,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:10:01,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917077037] [2023-08-30 15:10:01,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:10:01,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:10:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:10:01,595 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 15:10:01,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:10:01,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917077037] [2023-08-30 15:10:01,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917077037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:10:01,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:10:01,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 15:10:01,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67459240] [2023-08-30 15:10:01,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:10:01,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 15:10:01,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:10:01,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 15:10:01,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 15:10:01,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 456 [2023-08-30 15:10:01,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 151 flow. Second operand has 2 states, 2 states have (on average 186.5) internal successors, (373), 2 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:01,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:10:01,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 456 [2023-08-30 15:10:01,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:10:10,056 INFO L130 PetriNetUnfolder]: 55361/71763 cut-off events. [2023-08-30 15:10:10,057 INFO L131 PetriNetUnfolder]: For 2483/2483 co-relation queries the response was YES. [2023-08-30 15:10:10,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145991 conditions, 71763 events. 55361/71763 cut-off events. For 2483/2483 co-relation queries the response was YES. Maximal size of possible extension queue 4051. Compared 398072 event pairs, 48480 based on Foata normal form. 0/23600 useless extension candidates. Maximal degree in co-relation 132444. Up to 71764 conditions per place. [2023-08-30 15:10:10,520 INFO L137 encePairwiseOnDemand]: 446/456 looper letters, 55 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2023-08-30 15:10:10,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 241 flow [2023-08-30 15:10:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 15:10:10,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 15:10:10,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 437 transitions. [2023-08-30 15:10:10,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2023-08-30 15:10:10,541 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 437 transitions. [2023-08-30 15:10:10,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 437 transitions. [2023-08-30 15:10:10,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:10:10,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 437 transitions. [2023-08-30 15:10:10,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 218.5) internal successors, (437), 2 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:10,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 456.0) internal successors, (1368), 3 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:10,558 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 456.0) internal successors, (1368), 3 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:10,559 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 151 flow. Second operand 2 states and 437 transitions. [2023-08-30 15:10:10,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 241 flow [2023-08-30 15:10:10,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 15:10:10,655 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 118 flow [2023-08-30 15:10:10,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-08-30 15:10:10,662 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -16 predicate places. [2023-08-30 15:10:10,663 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 118 flow [2023-08-30 15:10:10,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 186.5) internal successors, (373), 2 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:10,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:10:10,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:10:10,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:10:10,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-08-30 15:10:10,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:10:10,672 INFO L85 PathProgramCache]: Analyzing trace with hash 46331, now seen corresponding path program 1 times [2023-08-30 15:10:10,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:10:10,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808204009] [2023-08-30 15:10:10,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:10:10,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:10:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:10:10,884 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 15:10:10,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:10:10,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808204009] [2023-08-30 15:10:10,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808204009] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:10:10,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:10:10,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:10:10,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128803211] [2023-08-30 15:10:10,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:10:10,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:10:10,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:10:10,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:10:10,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:10:10,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 456 [2023-08-30 15:10:10,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:10,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:10:10,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 456 [2023-08-30 15:10:10,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:10:24,507 INFO L130 PetriNetUnfolder]: 110721/143523 cut-off events. [2023-08-30 15:10:24,508 INFO L131 PetriNetUnfolder]: For 1296/1296 co-relation queries the response was YES. [2023-08-30 15:10:24,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290147 conditions, 143523 events. 110721/143523 cut-off events. For 1296/1296 co-relation queries the response was YES. Maximal size of possible extension queue 7856. Compared 860884 event pairs, 96960 based on Foata normal form. 0/47199 useless extension candidates. Maximal degree in co-relation 290144. Up to 71764 conditions per place. [2023-08-30 15:10:25,181 INFO L137 encePairwiseOnDemand]: 452/456 looper letters, 105 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-30 15:10:25,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 107 transitions, 444 flow [2023-08-30 15:10:25,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:10:25,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:10:25,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2023-08-30 15:10:25,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48099415204678364 [2023-08-30 15:10:25,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2023-08-30 15:10:25,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2023-08-30 15:10:25,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:10:25,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2023-08-30 15:10:25,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:25,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 456.0) internal successors, (1824), 4 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:25,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 456.0) internal successors, (1824), 4 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:25,191 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 118 flow. Second operand 3 states and 658 transitions. [2023-08-30 15:10:25,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 107 transitions, 444 flow [2023-08-30 15:10:25,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 107 transitions, 444 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 15:10:25,193 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 132 flow [2023-08-30 15:10:25,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-08-30 15:10:25,194 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -13 predicate places. [2023-08-30 15:10:25,194 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 132 flow [2023-08-30 15:10:25,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:25,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:10:25,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:10:25,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:10:25,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-08-30 15:10:25,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:10:25,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1438169, now seen corresponding path program 1 times [2023-08-30 15:10:25,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:10:25,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257623640] [2023-08-30 15:10:25,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:10:25,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:10:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:10:25,269 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 15:10:25,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:10:25,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257623640] [2023-08-30 15:10:25,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257623640] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:10:25,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796974883] [2023-08-30 15:10:25,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:10:25,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:10:25,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:10:25,281 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 15:10:25,309 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 15:10:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:10:25,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:10:25,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:10:25,479 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 15:10:25,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:10:25,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796974883] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:10:25,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:10:25,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 15:10:25,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952669760] [2023-08-30 15:10:25,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:10:25,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:10:25,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:10:25,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:10:25,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:10:25,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 456 [2023-08-30 15:10:25,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:25,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:10:25,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 456 [2023-08-30 15:10:25,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:10:38,864 INFO L130 PetriNetUnfolder]: 110721/143522 cut-off events. [2023-08-30 15:10:38,865 INFO L131 PetriNetUnfolder]: For 1296/1296 co-relation queries the response was YES. [2023-08-30 15:10:39,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290152 conditions, 143522 events. 110721/143522 cut-off events. For 1296/1296 co-relation queries the response was YES. Maximal size of possible extension queue 7284. Compared 856284 event pairs, 96960 based on Foata normal form. 0/47201 useless extension candidates. Maximal degree in co-relation 290147. Up to 71762 conditions per place. [2023-08-30 15:10:39,507 INFO L137 encePairwiseOnDemand]: 453/456 looper letters, 104 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-30 15:10:39,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 106 transitions, 450 flow [2023-08-30 15:10:39,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:10:39,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:10:39,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 839 transitions. [2023-08-30 15:10:39,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45997807017543857 [2023-08-30 15:10:39,512 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 839 transitions. [2023-08-30 15:10:39,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 839 transitions. [2023-08-30 15:10:39,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:10:39,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 839 transitions. [2023-08-30 15:10:39,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:39,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:39,522 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:39,522 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 132 flow. Second operand 4 states and 839 transitions. [2023-08-30 15:10:39,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 106 transitions, 450 flow [2023-08-30 15:10:39,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 106 transitions, 448 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:10:39,527 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 130 flow [2023-08-30 15:10:39,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-08-30 15:10:39,528 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2023-08-30 15:10:39,529 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 130 flow [2023-08-30 15:10:39,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:39,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:10:39,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:10:39,540 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 15:10:39,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:10:39,735 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-08-30 15:10:39,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:10:39,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1438185, now seen corresponding path program 1 times [2023-08-30 15:10:39,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:10:39,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111234038] [2023-08-30 15:10:39,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:10:39,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:10:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:10:39,837 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 15:10:39,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:10:39,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111234038] [2023-08-30 15:10:39,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111234038] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:10:39,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001165881] [2023-08-30 15:10:39,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:10:39,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:10:39,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:10:39,842 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 15:10:39,845 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 15:10:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:10:39,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:10:39,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:10:39,982 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 15:10:39,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:10:39,999 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 15:10:39,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001165881] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:10:39,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:10:40,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:10:40,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90359999] [2023-08-30 15:10:40,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:10:40,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:10:40,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:10:40,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:10:40,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:10:40,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 456 [2023-08-30 15:10:40,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 130 flow. Second operand has 7 states, 7 states have (on average 184.14285714285714) internal successors, (1289), 7 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:40,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:10:40,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 456 [2023-08-30 15:10:40,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:11:12,927 INFO L130 PetriNetUnfolder]: 276801/358802 cut-off events. [2023-08-30 15:11:12,927 INFO L131 PetriNetUnfolder]: For 3240/3240 co-relation queries the response was YES. [2023-08-30 15:11:13,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725363 conditions, 358802 events. 276801/358802 cut-off events. For 3240/3240 co-relation queries the response was YES. Maximal size of possible extension queue 14706. Compared 2322570 event pairs, 242400 based on Foata normal form. 0/118001 useless extension candidates. Maximal degree in co-relation 725358. Up to 71763 conditions per place. [2023-08-30 15:11:14,459 INFO L137 encePairwiseOnDemand]: 453/456 looper letters, 257 selfloop transitions, 5 changer transitions 0/262 dead transitions. [2023-08-30 15:11:14,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 262 transitions, 1106 flow [2023-08-30 15:11:14,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:11:14,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:11:14,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1363 transitions. [2023-08-30 15:11:14,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49817251461988304 [2023-08-30 15:11:14,463 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1363 transitions. [2023-08-30 15:11:14,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1363 transitions. [2023-08-30 15:11:14,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:11:14,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1363 transitions. [2023-08-30 15:11:14,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.16666666666666) internal successors, (1363), 6 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:11:14,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:11:14,473 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:11:14,473 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 130 flow. Second operand 6 states and 1363 transitions. [2023-08-30 15:11:14,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 262 transitions, 1106 flow [2023-08-30 15:11:14,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 262 transitions, 1103 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:11:14,477 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 163 flow [2023-08-30 15:11:14,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2023-08-30 15:11:14,478 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -6 predicate places. [2023-08-30 15:11:14,478 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 163 flow [2023-08-30 15:11:14,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 184.14285714285714) internal successors, (1289), 7 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:11:14,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:11:14,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:11:14,485 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 15:11:14,684 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 15:11:14,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-08-30 15:11:14,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:11:14,685 INFO L85 PathProgramCache]: Analyzing trace with hash 44589599, now seen corresponding path program 1 times [2023-08-30 15:11:14,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:11:14,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112630204] [2023-08-30 15:11:14,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:11:14,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:11:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:11:14,737 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 15:11:14,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:11:14,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112630204] [2023-08-30 15:11:14,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112630204] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:11:14,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:11:14,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:11:14,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428966958] [2023-08-30 15:11:14,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:11:14,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:11:14,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:11:14,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:11:14,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:11:14,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 456 [2023-08-30 15:11:14,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:11:14,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:11:14,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 456 [2023-08-30 15:11:14,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:11:41,992 INFO L130 PetriNetUnfolder]: 221236/286947 cut-off events. [2023-08-30 15:11:41,992 INFO L131 PetriNetUnfolder]: For 2881/2881 co-relation queries the response was YES. [2023-08-30 15:11:42,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580047 conditions, 286947 events. 221236/286947 cut-off events. For 2881/2881 co-relation queries the response was YES. Maximal size of possible extension queue 12672. Compared 1825750 event pairs, 192065 based on Foata normal form. 0/98137 useless extension candidates. Maximal degree in co-relation 580039. Up to 286947 conditions per place. [2023-08-30 15:11:43,389 INFO L137 encePairwiseOnDemand]: 453/456 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 15:11:43,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 56 transitions, 271 flow [2023-08-30 15:11:43,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:11:43,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:11:43,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 606 transitions. [2023-08-30 15:11:43,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2023-08-30 15:11:43,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 606 transitions. [2023-08-30 15:11:43,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 606 transitions. [2023-08-30 15:11:43,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:11:43,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 606 transitions. [2023-08-30 15:11:43,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:11:43,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 456.0) internal successors, (1824), 4 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:11:43,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 456.0) internal successors, (1824), 4 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:11:43,397 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 163 flow. Second operand 3 states and 606 transitions. [2023-08-30 15:11:43,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 56 transitions, 271 flow [2023-08-30 15:11:43,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 56 transitions, 263 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 15:11:43,400 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 153 flow [2023-08-30 15:11:43,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2023-08-30 15:11:43,401 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -7 predicate places. [2023-08-30 15:11:43,401 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 153 flow [2023-08-30 15:11:43,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:11:43,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:11:43,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:11:43,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:11:43,402 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-08-30 15:11:43,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:11:43,402 INFO L85 PathProgramCache]: Analyzing trace with hash 44589598, now seen corresponding path program 1 times [2023-08-30 15:11:43,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:11:43,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402989762] [2023-08-30 15:11:43,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:11:43,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:11:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:11:43,543 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 15:11:43,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:11:43,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402989762] [2023-08-30 15:11:43,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402989762] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:11:43,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:11:43,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:11:43,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954434176] [2023-08-30 15:11:43,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:11:43,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:11:43,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:11:43,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:11:43,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:11:43,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 456 [2023-08-30 15:11:43,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:11:43,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:11:43,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 456 [2023-08-30 15:11:43,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:12:09,531 INFO L130 PetriNetUnfolder]: 211373/274190 cut-off events. [2023-08-30 15:12:09,531 INFO L131 PetriNetUnfolder]: For 2811/2811 co-relation queries the response was YES. [2023-08-30 15:12:10,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554245 conditions, 274190 events. 211373/274190 cut-off events. For 2811/2811 co-relation queries the response was YES. Maximal size of possible extension queue 12504. Compared 1740650 event pairs, 183172 based on Foata normal form. 0/94518 useless extension candidates. Maximal degree in co-relation 554236. Up to 229559 conditions per place. [2023-08-30 15:12:10,865 INFO L137 encePairwiseOnDemand]: 451/456 looper letters, 100 selfloop transitions, 3 changer transitions 0/103 dead transitions. [2023-08-30 15:12:10,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 103 transitions, 461 flow [2023-08-30 15:12:10,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:12:10,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:12:10,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 806 transitions. [2023-08-30 15:12:10,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418859649122807 [2023-08-30 15:12:10,868 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 806 transitions. [2023-08-30 15:12:10,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 806 transitions. [2023-08-30 15:12:10,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:12:10,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 806 transitions. [2023-08-30 15:12:10,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:10,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:10,874 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:10,874 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 153 flow. Second operand 4 states and 806 transitions. [2023-08-30 15:12:10,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 103 transitions, 461 flow [2023-08-30 15:12:10,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 103 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:12:10,877 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 170 flow [2023-08-30 15:12:10,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2023-08-30 15:12:10,878 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -3 predicate places. [2023-08-30 15:12:10,878 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 170 flow [2023-08-30 15:12:10,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:10,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:12:10,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:12:10,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:12:10,879 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-08-30 15:12:10,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:12:10,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1382145916, now seen corresponding path program 1 times [2023-08-30 15:12:10,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:12:10,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414796588] [2023-08-30 15:12:10,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:12:10,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:12:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:12:11,071 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 15:12:11,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:12:11,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414796588] [2023-08-30 15:12:11,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414796588] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:12:11,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173236403] [2023-08-30 15:12:11,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:12:11,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:12:11,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:12:11,074 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 15:12:11,077 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 15:12:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:12:11,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:12:11,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:12:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:12:11,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:12:11,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173236403] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:12:11,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:12:11,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 15:12:11,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628110892] [2023-08-30 15:12:11,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:12:11,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:12:11,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:12:11,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:12:11,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:12:11,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 456 [2023-08-30 15:12:11,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:11,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:12:11,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 456 [2023-08-30 15:12:11,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand