./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.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 df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a --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 15:37:18,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:37:18,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:37:18,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:37:18,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:37:18,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:37:18,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:37:18,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:37:18,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:37:18,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:37:18,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:37:18,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:37:18,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:37:18,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:37:18,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:37:18,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:37:18,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:37:18,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:37:18,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:37:18,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:37:18,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:37:18,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:37:18,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:37:18,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:37:18,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:37:18,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:37:18,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:37:18,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:37:18,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:37:18,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:37:18,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:37:18,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:37:18,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:37:18,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:37:18,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:37:18,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:37:18,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:37:18,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:37:18,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:37:18,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:37:18,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:37:18,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:37:18,712 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:37:18,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:37:18,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:37:18,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:37:18,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:37:18,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:37:18,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:37:18,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:37:18,715 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:37:18,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:37:18,716 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:37:18,716 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:37:18,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:37:18,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:37:18,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:37:18,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:37:18,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:37:18,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:37:18,718 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:37:18,718 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:37:18,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:37:18,718 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:37:18,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:37:18,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:37:18,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:37:18,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:37:18,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:37:18,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:37:18,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:37:18,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:37:18,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:37:18,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:37:18,720 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:37:18,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:37:18,721 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:37:18,721 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:37:18,721 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:37:18,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:37:18,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:37:19,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:37:19,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:37:19,015 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:37:19,015 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:37:19,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2023-08-30 15:37:20,269 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:37:20,534 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:37:20,534 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2023-08-30 15:37:20,545 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ecbfe5bc/ab4eb35820494004ac34787585cf2899/FLAG3763969cf [2023-08-30 15:37:20,557 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ecbfe5bc/ab4eb35820494004ac34787585cf2899 [2023-08-30 15:37:20,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:37:20,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:37:20,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:37:20,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:37:20,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:37:20,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:37:20" (1/1) ... [2023-08-30 15:37:20,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71068125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:20, skipping insertion in model container [2023-08-30 15:37:20,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:37:20" (1/1) ... [2023-08-30 15:37:20,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:37:20,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:37:20,788 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2023-08-30 15:37:20,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:37:20,815 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:37:20,857 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2023-08-30 15:37:20,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:37:20,888 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:37:20,890 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:37:20,896 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:37:20,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:20 WrapperNode [2023-08-30 15:37:20,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:37:20,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:37:20,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:37:20,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:37:20,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:20" (1/1) ... [2023-08-30 15:37:20,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:20" (1/1) ... [2023-08-30 15:37:20,966 INFO L138 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 357 [2023-08-30 15:37:20,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:37:20,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:37:20,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:37:20,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:37:20,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:20" (1/1) ... [2023-08-30 15:37:20,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:20" (1/1) ... [2023-08-30 15:37:20,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:20" (1/1) ... [2023-08-30 15:37:20,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:20" (1/1) ... [2023-08-30 15:37:21,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:20" (1/1) ... [2023-08-30 15:37:21,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:20" (1/1) ... [2023-08-30 15:37:21,051 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:20" (1/1) ... [2023-08-30 15:37:21,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:20" (1/1) ... [2023-08-30 15:37:21,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:37:21,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:37:21,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:37:21,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:37:21,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:20" (1/1) ... [2023-08-30 15:37:21,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:37:21,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:37:21,106 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 15:37:21,124 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 15:37:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:37:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:37:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:37:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:37:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:37:21,148 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:37:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:37:21,149 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:37:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:37:21,149 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:37:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 15:37:21,149 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 15:37:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:37:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:37:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:37:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:37:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:37:21,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:37:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:37:21,152 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 15:37:21,305 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:37:21,315 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:37:21,774 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:37:22,216 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:37:22,216 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 15:37:22,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:37:22 BoogieIcfgContainer [2023-08-30 15:37:22,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:37:22,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:37:22,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:37:22,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:37:22,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:37:20" (1/3) ... [2023-08-30 15:37:22,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61573c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:37:22, skipping insertion in model container [2023-08-30 15:37:22,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:20" (2/3) ... [2023-08-30 15:37:22,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61573c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:37:22, skipping insertion in model container [2023-08-30 15:37:22,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:37:22" (3/3) ... [2023-08-30 15:37:22,228 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2023-08-30 15:37:22,236 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:37:22,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:37:22,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-30 15:37:22,253 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:37:22,433 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 15:37:22,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 252 transitions, 536 flow [2023-08-30 15:37:22,604 INFO L130 PetriNetUnfolder]: 18/248 cut-off events. [2023-08-30 15:37:22,604 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 15:37:22,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 248 events. 18/248 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 307 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 205. Up to 2 conditions per place. [2023-08-30 15:37:22,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 252 transitions, 536 flow [2023-08-30 15:37:22,623 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 228 transitions, 477 flow [2023-08-30 15:37:22,627 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:37:22,643 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 228 transitions, 477 flow [2023-08-30 15:37:22,647 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 228 transitions, 477 flow [2023-08-30 15:37:22,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 228 transitions, 477 flow [2023-08-30 15:37:22,701 INFO L130 PetriNetUnfolder]: 17/228 cut-off events. [2023-08-30 15:37:22,701 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:37:22,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 228 events. 17/228 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 300 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 205. Up to 2 conditions per place. [2023-08-30 15:37:22,706 INFO L119 LiptonReduction]: Number of co-enabled transitions 4384 [2023-08-30 15:37:36,669 INFO L134 LiptonReduction]: Checked pairs total: 7340 [2023-08-30 15:37:36,669 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-08-30 15:37:36,680 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:37:36,686 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;@ae5374, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:37:36,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-08-30 15:37:36,688 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:37:36,688 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:37:36,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:37:36,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:37:36,690 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 15:37:36,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:37:36,694 INFO L85 PathProgramCache]: Analyzing trace with hash 43038, now seen corresponding path program 1 times [2023-08-30 15:37:36,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:37:36,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804137273] [2023-08-30 15:37:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:36,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:37:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:36,934 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 15:37:36,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:37:36,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804137273] [2023-08-30 15:37:36,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804137273] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:37:36,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:37:36,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:37:36,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670632679] [2023-08-30 15:37:36,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:37:36,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:37:36,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:37:36,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:37:36,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:37:36,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 480 [2023-08-30 15:37:37,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:37:37,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:37:37,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 480 [2023-08-30 15:37:37,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:37:46,166 INFO L130 PetriNetUnfolder]: 73037/90281 cut-off events. [2023-08-30 15:37:46,166 INFO L131 PetriNetUnfolder]: For 1182/1182 co-relation queries the response was YES. [2023-08-30 15:37:46,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181763 conditions, 90281 events. 73037/90281 cut-off events. For 1182/1182 co-relation queries the response was YES. Maximal size of possible extension queue 7807. Compared 512124 event pairs, 46499 based on Foata normal form. 0/24431 useless extension candidates. Maximal degree in co-relation 80304. Up to 44280 conditions per place. [2023-08-30 15:37:46,808 INFO L137 encePairwiseOnDemand]: 464/480 looper letters, 89 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2023-08-30 15:37:46,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 426 flow [2023-08-30 15:37:46,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:37:46,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:37:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 698 transitions. [2023-08-30 15:37:46,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847222222222222 [2023-08-30 15:37:46,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 698 transitions. [2023-08-30 15:37:46,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 698 transitions. [2023-08-30 15:37:46,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:37:46,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 698 transitions. [2023-08-30 15:37:46,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:37:46,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:37:46,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:37:46,848 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 147 flow. Second operand 3 states and 698 transitions. [2023-08-30 15:37:46,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 426 flow [2023-08-30 15:37:47,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 400 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 15:37:47,053 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 154 flow [2023-08-30 15:37:47,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2023-08-30 15:37:47,060 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2023-08-30 15:37:47,060 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 154 flow [2023-08-30 15:37:47,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:37:47,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:37:47,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:37:47,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:37:47,063 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 15:37:47,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:37:47,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1336203, now seen corresponding path program 1 times [2023-08-30 15:37:47,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:37:47,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606005400] [2023-08-30 15:37:47,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:47,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:37:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:47,219 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 15:37:47,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:37:47,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606005400] [2023-08-30 15:37:47,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606005400] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:37:47,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658249773] [2023-08-30 15:37:47,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:47,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:37:47,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:37:47,229 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 15:37:47,238 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 15:37:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:47,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:37:47,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:37:47,472 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 15:37:47,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:37:47,486 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 15:37:47,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658249773] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:37:47,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:37:47,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:37:47,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387196628] [2023-08-30 15:37:47,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:37:47,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:37:47,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:37:47,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:37:47,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:37:47,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 480 [2023-08-30 15:37:47,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 196.14285714285714) internal successors, (1373), 7 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:37:47,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:37:47,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 480 [2023-08-30 15:37:47,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:38:06,574 INFO L130 PetriNetUnfolder]: 182588/225701 cut-off events. [2023-08-30 15:38:06,575 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:38:06,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451212 conditions, 225701 events. 182588/225701 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13114. Compared 1364276 event pairs, 116246 based on Foata normal form. 0/61173 useless extension candidates. Maximal degree in co-relation 360915. Up to 44283 conditions per place. [2023-08-30 15:38:07,927 INFO L137 encePairwiseOnDemand]: 472/480 looper letters, 210 selfloop transitions, 21 changer transitions 0/237 dead transitions. [2023-08-30 15:38:07,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 237 transitions, 1042 flow [2023-08-30 15:38:07,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:38:07,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:38:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1602 transitions. [2023-08-30 15:38:07,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767857142857143 [2023-08-30 15:38:07,940 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1602 transitions. [2023-08-30 15:38:07,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1602 transitions. [2023-08-30 15:38:07,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:38:07,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1602 transitions. [2023-08-30 15:38:07,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 228.85714285714286) internal successors, (1602), 7 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:38:07,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:38:07,957 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:38:07,957 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 154 flow. Second operand 7 states and 1602 transitions. [2023-08-30 15:38:07,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 237 transitions, 1042 flow [2023-08-30 15:38:07,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 237 transitions, 1028 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:38:07,964 INFO L231 Difference]: Finished difference. Result has 66 places, 73 transitions, 285 flow [2023-08-30 15:38:07,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=57, 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=7, PETRI_FLOW=285, PETRI_PLACES=66, PETRI_TRANSITIONS=73} [2023-08-30 15:38:07,966 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-08-30 15:38:07,966 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 73 transitions, 285 flow [2023-08-30 15:38:07,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 196.14285714285714) internal successors, (1373), 7 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:38:07,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:38:07,968 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 15:38:07,977 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 15:38:08,173 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 15:38:08,173 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 15:38:08,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:38:08,175 INFO L85 PathProgramCache]: Analyzing trace with hash 41424317, now seen corresponding path program 1 times [2023-08-30 15:38:08,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:38:08,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090423851] [2023-08-30 15:38:08,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:38:08,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:38:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:38:08,219 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 15:38:08,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:38:08,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090423851] [2023-08-30 15:38:08,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090423851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:38:08,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:38:08,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:38:08,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905524095] [2023-08-30 15:38:08,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:38:08,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:38:08,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:38:08,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:38:08,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:38:08,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 480 [2023-08-30 15:38:08,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 73 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:38:08,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:38:08,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 480 [2023-08-30 15:38:08,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:38:26,464 INFO L130 PetriNetUnfolder]: 182606/225693 cut-off events. [2023-08-30 15:38:26,464 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:38:26,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451266 conditions, 225693 events. 182606/225693 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15816. Compared 1384094 event pairs, 116250 based on Foata normal form. 2/60943 useless extension candidates. Maximal degree in co-relation 270740. Up to 221403 conditions per place. [2023-08-30 15:38:27,806 INFO L137 encePairwiseOnDemand]: 477/480 looper letters, 58 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2023-08-30 15:38:27,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 349 flow [2023-08-30 15:38:27,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:38:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:38:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions. [2023-08-30 15:38:27,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44027777777777777 [2023-08-30 15:38:27,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions. [2023-08-30 15:38:27,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions. [2023-08-30 15:38:27,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:38:27,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions. [2023-08-30 15:38:27,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:38:27,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:38:27,814 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:38:27,814 INFO L175 Difference]: Start difference. First operand has 66 places, 73 transitions, 285 flow. Second operand 3 states and 634 transitions. [2023-08-30 15:38:27,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 349 flow [2023-08-30 15:38:27,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 330 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 15:38:27,817 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 214 flow [2023-08-30 15:38:27,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2023-08-30 15:38:27,818 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2023-08-30 15:38:27,818 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 214 flow [2023-08-30 15:38:27,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:38:27,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:38:27,819 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:38:27,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 15:38:27,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 15:38:27,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:38:27,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1154128734, now seen corresponding path program 2 times [2023-08-30 15:38:27,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:38:27,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619409134] [2023-08-30 15:38:27,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:38:27,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:38:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:38:27,962 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 15:38:27,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:38:27,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619409134] [2023-08-30 15:38:27,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619409134] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:38:27,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923275011] [2023-08-30 15:38:27,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:38:27,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:38:27,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:38:27,969 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 15:38:27,977 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 15:38:28,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:38:28,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:38:28,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:38:28,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:38:28,113 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 15:38:28,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:38:28,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923275011] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:38:28,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:38:28,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:38:28,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348477676] [2023-08-30 15:38:28,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:38:28,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:38:28,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:38:28,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:38:28,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:38:28,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 480 [2023-08-30 15:38:28,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:38:28,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:38:28,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 480 [2023-08-30 15:38:28,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:38:46,144 INFO L130 PetriNetUnfolder]: 182606/225692 cut-off events. [2023-08-30 15:38:46,145 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 15:38:46,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451251 conditions, 225692 events. 182606/225692 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15816. Compared 1384328 event pairs, 116250 based on Foata normal form. 1/60942 useless extension candidates. Maximal degree in co-relation 451239. Up to 221397 conditions per place. [2023-08-30 15:38:47,314 INFO L137 encePairwiseOnDemand]: 477/480 looper letters, 52 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2023-08-30 15:38:47,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 320 flow [2023-08-30 15:38:47,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:38:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:38:47,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2023-08-30 15:38:47,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44305555555555554 [2023-08-30 15:38:47,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2023-08-30 15:38:47,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2023-08-30 15:38:47,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:38:47,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2023-08-30 15:38:47,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:38:47,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:38:47,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:38:47,323 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 214 flow. Second operand 3 states and 638 transitions. [2023-08-30 15:38:47,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 320 flow [2023-08-30 15:38:47,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:38:47,326 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 215 flow [2023-08-30 15:38:47,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2023-08-30 15:38:47,327 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2023-08-30 15:38:47,327 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 215 flow [2023-08-30 15:38:47,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:38:47,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:38:47,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:38:47,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:38:47,533 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 15:38:47,533 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 15:38:47,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:38:47,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1162364152, now seen corresponding path program 1 times [2023-08-30 15:38:47,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:38:47,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744590595] [2023-08-30 15:38:47,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:38:47,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:38:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:38:47,667 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 15:38:47,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:38:47,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744590595] [2023-08-30 15:38:47,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744590595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:38:47,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:38:47,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:38:47,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271450846] [2023-08-30 15:38:47,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:38:47,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:38:47,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:38:47,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:38:47,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:38:47,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 480 [2023-08-30 15:38:47,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 215 flow. Second operand has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:38:47,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:38:47,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 480 [2023-08-30 15:38:47,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:06,697 INFO L130 PetriNetUnfolder]: 196206/244148 cut-off events. [2023-08-30 15:39:06,697 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 15:39:07,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488128 conditions, 244148 events. 196206/244148 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 16825. Compared 1532013 event pairs, 125995 based on Foata normal form. 0/70123 useless extension candidates. Maximal degree in co-relation 488115. Up to 221336 conditions per place. [2023-08-30 15:39:08,222 INFO L137 encePairwiseOnDemand]: 467/480 looper letters, 92 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2023-08-30 15:39:08,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 101 transitions, 514 flow [2023-08-30 15:39:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:39:08,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:39:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 855 transitions. [2023-08-30 15:39:08,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2023-08-30 15:39:08,229 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 855 transitions. [2023-08-30 15:39:08,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 855 transitions. [2023-08-30 15:39:08,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:08,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 855 transitions. [2023-08-30 15:39:08,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:08,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:08,235 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:08,235 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 215 flow. Second operand 4 states and 855 transitions. [2023-08-30 15:39:08,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 101 transitions, 514 flow [2023-08-30 15:39:08,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 101 transitions, 502 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:39:08,238 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 230 flow [2023-08-30 15:39:08,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2023-08-30 15:39:08,239 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-08-30 15:39:08,239 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 230 flow [2023-08-30 15:39:08,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:08,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:08,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:39:08,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:39:08,240 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 15:39:08,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:08,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1426489829, now seen corresponding path program 1 times [2023-08-30 15:39:08,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:08,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323079706] [2023-08-30 15:39:08,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:08,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:39:08,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:08,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323079706] [2023-08-30 15:39:08,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323079706] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:39:08,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262943285] [2023-08-30 15:39:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:08,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:08,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:39:08,387 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 15:39:08,391 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 15:39:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:08,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:39:08,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:39:08,538 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 15:39:08,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:39:08,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262943285] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:39:08,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:39:08,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 15:39:08,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664237478] [2023-08-30 15:39:08,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:39:08,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:39:08,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:08,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:39:08,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:39:08,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 480 [2023-08-30 15:39:08,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:08,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:08,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 480 [2023-08-30 15:39:08,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:23,235 INFO L130 PetriNetUnfolder]: 147516/184703 cut-off events. [2023-08-30 15:39:23,235 INFO L131 PetriNetUnfolder]: For 14186/14186 co-relation queries the response was YES. [2023-08-30 15:39:23,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421681 conditions, 184703 events. 147516/184703 cut-off events. For 14186/14186 co-relation queries the response was YES. Maximal size of possible extension queue 12516. Compared 1159271 event pairs, 95350 based on Foata normal form. 0/71337 useless extension candidates. Maximal degree in co-relation 421667. Up to 181123 conditions per place. [2023-08-30 15:39:24,488 INFO L137 encePairwiseOnDemand]: 477/480 looper letters, 55 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-30 15:39:24,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 334 flow [2023-08-30 15:39:24,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:39:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:39:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 643 transitions. [2023-08-30 15:39:24,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4465277777777778 [2023-08-30 15:39:24,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 643 transitions. [2023-08-30 15:39:24,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 643 transitions. [2023-08-30 15:39:24,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:24,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 643 transitions. [2023-08-30 15:39:24,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:24,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:24,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:24,495 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 230 flow. Second operand 3 states and 643 transitions. [2023-08-30 15:39:24,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 334 flow [2023-08-30 15:39:24,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 62 transitions, 328 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 15:39:24,504 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 218 flow [2023-08-30 15:39:24,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2023-08-30 15:39:24,505 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -5 predicate places. [2023-08-30 15:39:24,505 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 218 flow [2023-08-30 15:39:24,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:24,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:24,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:39:24,515 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 15:39:24,712 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 15:39:24,712 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 15:39:24,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:24,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1426489830, now seen corresponding path program 1 times [2023-08-30 15:39:24,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:24,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878347862] [2023-08-30 15:39:24,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:24,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:24,763 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 15:39:24,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:24,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878347862] [2023-08-30 15:39:24,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878347862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:39:24,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:39:24,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:39:24,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161899872] [2023-08-30 15:39:24,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:39:24,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:39:24,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:24,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:39:24,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:39:24,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 480 [2023-08-30 15:39:24,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 218 flow. Second operand has 3 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 15:39:24,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:24,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 480 [2023-08-30 15:39:24,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand