./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.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-min-le-max.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 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 --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 15:40:30,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:40:30,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:40:30,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:40:30,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:40:30,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:40:30,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:40:30,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:40:30,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:40:30,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:40:30,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:40:30,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:40:30,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:40:30,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:40:30,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:40:30,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:40:30,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:40:30,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:40:30,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:40:30,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:40:30,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:40:30,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:40:30,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:40:30,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:40:30,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:40:30,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:40:30,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:40:30,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:40:30,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:40:30,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:40:30,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:40:30,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:40:30,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:40:30,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:40:30,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:40:30,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:40:30,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:40:30,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:40:30,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:40:30,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:40:30,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:40:30,439 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:40:30,469 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:40:30,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:40:30,471 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:40:30,471 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:40:30,472 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:40:30,472 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:40:30,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:40:30,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:40:30,473 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:40:30,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:40:30,474 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:40:30,474 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:40:30,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:40:30,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:40:30,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:40:30,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:40:30,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:40:30,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:40:30,476 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:40:30,476 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:40:30,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:40:30,476 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:40:30,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:40:30,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:40:30,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:40:30,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:40:30,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:40:30,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:40:30,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:40:30,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:40:30,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:40:30,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:40:30,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:40:30,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:40:30,479 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:40:30,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:40:30,479 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:40:30,480 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:40:30,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:40:30,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:40:30,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:40:30,813 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:40:30,814 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:40:30,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2023-08-30 15:40:32,014 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:40:32,199 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:40:32,200 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2023-08-30 15:40:32,211 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3472f3866/b37f56af0e1d4828858c2b58ab1ea5fe/FLAGa0b6a15ac [2023-08-30 15:40:32,232 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3472f3866/b37f56af0e1d4828858c2b58ab1ea5fe [2023-08-30 15:40:32,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:40:32,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:40:32,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:40:32,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:40:32,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:40:32,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:40:32" (1/1) ... [2023-08-30 15:40:32,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19acc2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:32, skipping insertion in model container [2023-08-30 15:40:32,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:40:32" (1/1) ... [2023-08-30 15:40:32,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:40:32,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:40:32,467 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-min-le-max.wvr.c[2486,2499] [2023-08-30 15:40:32,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:40:32,489 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:40:32,524 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-min-le-max.wvr.c[2486,2499] [2023-08-30 15:40:32,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:40:32,542 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:40:32,542 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:40:32,548 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:40:32,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:32 WrapperNode [2023-08-30 15:40:32,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:40:32,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:40:32,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:40:32,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:40:32,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:32" (1/1) ... [2023-08-30 15:40:32,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:32" (1/1) ... [2023-08-30 15:40:32,602 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 108 [2023-08-30 15:40:32,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:40:32,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:40:32,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:40:32,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:40:32,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:32" (1/1) ... [2023-08-30 15:40:32,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:32" (1/1) ... [2023-08-30 15:40:32,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:32" (1/1) ... [2023-08-30 15:40:32,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:32" (1/1) ... [2023-08-30 15:40:32,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:32" (1/1) ... [2023-08-30 15:40:32,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:32" (1/1) ... [2023-08-30 15:40:32,646 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:32" (1/1) ... [2023-08-30 15:40:32,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:32" (1/1) ... [2023-08-30 15:40:32,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:40:32,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:40:32,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:40:32,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:40:32,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:32" (1/1) ... [2023-08-30 15:40:32,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:40:32,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:40:32,698 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 15:40:32,720 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 15:40:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:40:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:40:32,736 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:40:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:40:32,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:40:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:40:32,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:40:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:40:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:40:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:40:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:40:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:40:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:40:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:40:32,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:40:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:40:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:40:32,740 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 15:40:32,830 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:40:32,832 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:40:33,157 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:40:33,211 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:40:33,211 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 15:40:33,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:40:33 BoogieIcfgContainer [2023-08-30 15:40:33,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:40:33,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:40:33,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:40:33,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:40:33,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:40:32" (1/3) ... [2023-08-30 15:40:33,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6104afc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:40:33, skipping insertion in model container [2023-08-30 15:40:33,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:32" (2/3) ... [2023-08-30 15:40:33,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6104afc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:40:33, skipping insertion in model container [2023-08-30 15:40:33,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:40:33" (3/3) ... [2023-08-30 15:40:33,221 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2023-08-30 15:40:33,228 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:40:33,236 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:40:33,237 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 15:40:33,237 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:40:33,291 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:40:33,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 150 transitions, 324 flow [2023-08-30 15:40:33,371 INFO L130 PetriNetUnfolder]: 10/147 cut-off events. [2023-08-30 15:40:33,372 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:40:33,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 10/147 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2023-08-30 15:40:33,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 150 transitions, 324 flow [2023-08-30 15:40:33,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 126 transitions, 264 flow [2023-08-30 15:40:33,384 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:40:33,392 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 126 transitions, 264 flow [2023-08-30 15:40:33,394 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 126 transitions, 264 flow [2023-08-30 15:40:33,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 126 transitions, 264 flow [2023-08-30 15:40:33,426 INFO L130 PetriNetUnfolder]: 9/126 cut-off events. [2023-08-30 15:40:33,426 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 15:40:33,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 126 events. 9/126 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2023-08-30 15:40:33,429 INFO L119 LiptonReduction]: Number of co-enabled transitions 1352 [2023-08-30 15:40:38,201 INFO L134 LiptonReduction]: Checked pairs total: 1683 [2023-08-30 15:40:38,201 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-30 15:40:38,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:40:38,219 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;@21c6c45, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:40:38,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 15:40:38,222 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:40:38,222 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:40:38,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:40:38,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:40:38,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:40:38,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:40:38,228 INFO L85 PathProgramCache]: Analyzing trace with hash 18355, now seen corresponding path program 1 times [2023-08-30 15:40:38,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:40:38,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130025372] [2023-08-30 15:40:38,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:38,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:40:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:38,547 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 15:40:38,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:40:38,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130025372] [2023-08-30 15:40:38,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130025372] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:40:38,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:40:38,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:40:38,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678093200] [2023-08-30 15:40:38,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:40:38,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:40:38,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:40:38,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:40:38,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:40:38,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 279 [2023-08-30 15:40:38,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:38,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:40:38,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 279 [2023-08-30 15:40:38,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:40:38,938 INFO L130 PetriNetUnfolder]: 1015/1381 cut-off events. [2023-08-30 15:40:38,938 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-30 15:40:38,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2899 conditions, 1381 events. 1015/1381 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5863 event pairs, 530 based on Foata normal form. 0/633 useless extension candidates. Maximal degree in co-relation 1302. Up to 687 conditions per place. [2023-08-30 15:40:38,949 INFO L137 encePairwiseOnDemand]: 275/279 looper letters, 39 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-30 15:40:38,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 43 transitions, 192 flow [2023-08-30 15:40:38,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:40:38,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:40:38,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2023-08-30 15:40:38,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209080047789725 [2023-08-30 15:40:38,963 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2023-08-30 15:40:38,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2023-08-30 15:40:38,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:40:38,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2023-08-30 15:40:38,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:38,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:38,976 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:38,978 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 60 flow. Second operand 3 states and 436 transitions. [2023-08-30 15:40:38,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 43 transitions, 192 flow [2023-08-30 15:40:38,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 43 transitions, 180 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 15:40:38,985 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 68 flow [2023-08-30 15:40:38,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-08-30 15:40:38,990 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2023-08-30 15:40:38,991 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 68 flow [2023-08-30 15:40:38,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:38,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:40:38,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:40:38,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:40:38,992 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:40:38,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:40:38,993 INFO L85 PathProgramCache]: Analyzing trace with hash 569566, now seen corresponding path program 1 times [2023-08-30 15:40:38,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:40:38,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724117402] [2023-08-30 15:40:38,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:38,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:40:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:39,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:40:39,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:40:39,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724117402] [2023-08-30 15:40:39,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724117402] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:40:39,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783053932] [2023-08-30 15:40:39,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:39,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:40:39,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:40:39,101 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 15:40:39,128 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 15:40:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:39,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:40:39,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:40:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:40:39,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:40:39,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783053932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:40:39,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:40:39,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 15:40:39,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856909120] [2023-08-30 15:40:39,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:40:39,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:40:39,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:40:39,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:40:39,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:40:39,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 279 [2023-08-30 15:40:39,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:39,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:40:39,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 279 [2023-08-30 15:40:39,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:40:39,505 INFO L130 PetriNetUnfolder]: 1015/1380 cut-off events. [2023-08-30 15:40:39,505 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 15:40:39,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2879 conditions, 1380 events. 1015/1380 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5731 event pairs, 530 based on Foata normal form. 0/635 useless extension candidates. Maximal degree in co-relation 1437. Up to 685 conditions per place. [2023-08-30 15:40:39,513 INFO L137 encePairwiseOnDemand]: 276/279 looper letters, 38 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-30 15:40:39,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 42 transitions, 186 flow [2023-08-30 15:40:39,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:40:39,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:40:39,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 565 transitions. [2023-08-30 15:40:39,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062724014336918 [2023-08-30 15:40:39,519 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 565 transitions. [2023-08-30 15:40:39,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 565 transitions. [2023-08-30 15:40:39,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:40:39,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 565 transitions. [2023-08-30 15:40:39,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:39,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:39,526 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:39,526 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 68 flow. Second operand 4 states and 565 transitions. [2023-08-30 15:40:39,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 42 transitions, 186 flow [2023-08-30 15:40:39,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 42 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:40:39,528 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 66 flow [2023-08-30 15:40:39,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-08-30 15:40:39,529 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2023-08-30 15:40:39,529 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 66 flow [2023-08-30 15:40:39,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:39,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:40:39,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:40:39,539 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 15:40:39,735 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 15:40:39,736 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:40:39,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:40:39,737 INFO L85 PathProgramCache]: Analyzing trace with hash 569568, now seen corresponding path program 1 times [2023-08-30 15:40:39,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:40:39,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383356501] [2023-08-30 15:40:39,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:39,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:40:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:39,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:40:39,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:40:39,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383356501] [2023-08-30 15:40:39,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383356501] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:40:39,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243499481] [2023-08-30 15:40:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:39,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:40:39,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:40:39,789 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 15:40:39,809 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 15:40:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:39,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:40:39,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:40:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:40:39,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:40:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:40:39,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243499481] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:40:39,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:40:39,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:40:39,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98102469] [2023-08-30 15:40:39,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:40:39,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:40:39,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:40:39,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:40:39,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:40:39,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 279 [2023-08-30 15:40:39,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 132.14285714285714) internal successors, (925), 7 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:39,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:40:39,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 279 [2023-08-30 15:40:39,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:40:40,287 INFO L130 PetriNetUnfolder]: 2536/3447 cut-off events. [2023-08-30 15:40:40,288 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-30 15:40:40,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7182 conditions, 3447 events. 2536/3447 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 16559 event pairs, 1325 based on Foata normal form. 0/1586 useless extension candidates. Maximal degree in co-relation 5739. Up to 686 conditions per place. [2023-08-30 15:40:40,308 INFO L137 encePairwiseOnDemand]: 276/279 looper letters, 92 selfloop transitions, 5 changer transitions 0/99 dead transitions. [2023-08-30 15:40:40,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 99 transitions, 440 flow [2023-08-30 15:40:40,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:40:40,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:40:40,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 886 transitions. [2023-08-30 15:40:40,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292712066905615 [2023-08-30 15:40:40,311 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 886 transitions. [2023-08-30 15:40:40,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 886 transitions. [2023-08-30 15:40:40,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:40:40,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 886 transitions. [2023-08-30 15:40:40,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:40,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 279.0) internal successors, (1953), 7 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:40,318 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 279.0) internal successors, (1953), 7 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:40,318 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 66 flow. Second operand 6 states and 886 transitions. [2023-08-30 15:40:40,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 99 transitions, 440 flow [2023-08-30 15:40:40,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 99 transitions, 437 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:40:40,321 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 99 flow [2023-08-30 15:40:40,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=99, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2023-08-30 15:40:40,326 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2023-08-30 15:40:40,327 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 99 flow [2023-08-30 15:40:40,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 132.14285714285714) internal successors, (925), 7 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:40,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:40:40,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:40:40,337 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 15:40:40,534 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,SelfDestructingSolverStorable2 [2023-08-30 15:40:40,535 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:40:40,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:40:40,535 INFO L85 PathProgramCache]: Analyzing trace with hash 547490007, now seen corresponding path program 1 times [2023-08-30 15:40:40,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:40:40,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803533099] [2023-08-30 15:40:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:40,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:40:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:40,616 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 15:40:40,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:40:40,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803533099] [2023-08-30 15:40:40,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803533099] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:40:40,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:40:40,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:40:40,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767074036] [2023-08-30 15:40:40,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:40:40,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:40:40,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:40:40,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:40:40,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:40:40,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 279 [2023-08-30 15:40:40,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:40,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:40:40,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 279 [2023-08-30 15:40:40,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:40:41,043 INFO L130 PetriNetUnfolder]: 3161/4492 cut-off events. [2023-08-30 15:40:41,043 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-08-30 15:40:41,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9426 conditions, 4492 events. 3161/4492 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 25432 event pairs, 1350 based on Foata normal form. 0/2382 useless extension candidates. Maximal degree in co-relation 7533. Up to 3058 conditions per place. [2023-08-30 15:40:41,068 INFO L137 encePairwiseOnDemand]: 275/279 looper letters, 38 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-30 15:40:41,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 212 flow [2023-08-30 15:40:41,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:40:41,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:40:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2023-08-30 15:40:41,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2023-08-30 15:40:41,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2023-08-30 15:40:41,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2023-08-30 15:40:41,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:40:41,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2023-08-30 15:40:41,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:41,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:41,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:41,075 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 99 flow. Second operand 3 states and 434 transitions. [2023-08-30 15:40:41,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 212 flow [2023-08-30 15:40:41,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 41 transitions, 204 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 15:40:41,077 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 105 flow [2023-08-30 15:40:41,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-08-30 15:40:41,078 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2023-08-30 15:40:41,078 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 105 flow [2023-08-30 15:40:41,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:41,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:40:41,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:40:41,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:40:41,080 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:40:41,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:40:41,080 INFO L85 PathProgramCache]: Analyzing trace with hash -207677294, now seen corresponding path program 1 times [2023-08-30 15:40:41,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:40:41,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98268390] [2023-08-30 15:40:41,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:41,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:40:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:40:41,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:40:41,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98268390] [2023-08-30 15:40:41,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98268390] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:40:41,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:40:41,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 15:40:41,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488961965] [2023-08-30 15:40:41,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:40:41,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:40:41,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:40:41,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:40:41,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:40:41,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 279 [2023-08-30 15:40:41,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:41,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:40:41,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 279 [2023-08-30 15:40:41,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:40:41,580 INFO L130 PetriNetUnfolder]: 2473/3539 cut-off events. [2023-08-30 15:40:41,581 INFO L131 PetriNetUnfolder]: For 643/643 co-relation queries the response was YES. [2023-08-30 15:40:41,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8167 conditions, 3539 events. 2473/3539 cut-off events. For 643/643 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 18883 event pairs, 1608 based on Foata normal form. 1/2144 useless extension candidates. Maximal degree in co-relation 8150. Up to 3519 conditions per place. [2023-08-30 15:40:41,605 INFO L137 encePairwiseOnDemand]: 276/279 looper letters, 25 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-30 15:40:41,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 28 transitions, 159 flow [2023-08-30 15:40:41,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:40:41,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:40:41,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-08-30 15:40:41,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767025089605735 [2023-08-30 15:40:41,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-08-30 15:40:41,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-08-30 15:40:41,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:40:41,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-08-30 15:40:41,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:41,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:41,615 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:41,615 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 105 flow. Second operand 3 states and 399 transitions. [2023-08-30 15:40:41,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 28 transitions, 159 flow [2023-08-30 15:40:41,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 28 transitions, 155 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 15:40:41,619 INFO L231 Difference]: Finished difference. Result has 41 places, 28 transitions, 109 flow [2023-08-30 15:40:41,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2023-08-30 15:40:41,619 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2023-08-30 15:40:41,620 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 109 flow [2023-08-30 15:40:41,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:41,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:40:41,620 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:40:41,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:40:41,621 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:40:41,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:40:41,621 INFO L85 PathProgramCache]: Analyzing trace with hash -211371403, now seen corresponding path program 2 times [2023-08-30 15:40:41,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:40:41,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586732412] [2023-08-30 15:40:41,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:41,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:40:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:40:41,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:40:41,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586732412] [2023-08-30 15:40:41,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586732412] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:40:41,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816865344] [2023-08-30 15:40:41,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:40:41,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:40:41,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:40:41,698 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:40:41,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:40:41,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:40:41,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:40:41,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:40:41,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:40:41,780 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 15:40:41,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:40:41,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816865344] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:40:41,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:40:41,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:40:41,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669412153] [2023-08-30 15:40:41,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:40:41,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:40:41,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:40:41,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:40:41,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:40:41,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 279 [2023-08-30 15:40:41,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:41,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:40:41,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 279 [2023-08-30 15:40:41,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:40:42,053 INFO L130 PetriNetUnfolder]: 2189/3130 cut-off events. [2023-08-30 15:40:42,054 INFO L131 PetriNetUnfolder]: For 280/396 co-relation queries the response was YES. [2023-08-30 15:40:42,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7064 conditions, 3130 events. 2189/3130 cut-off events. For 280/396 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 16704 event pairs, 1396 based on Foata normal form. 117/1967 useless extension candidates. Maximal degree in co-relation 7044. Up to 3114 conditions per place. [2023-08-30 15:40:42,072 INFO L137 encePairwiseOnDemand]: 277/279 looper letters, 24 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-30 15:40:42,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 149 flow [2023-08-30 15:40:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:40:42,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:40:42,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2023-08-30 15:40:42,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4982078853046595 [2023-08-30 15:40:42,075 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2023-08-30 15:40:42,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2023-08-30 15:40:42,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:40:42,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2023-08-30 15:40:42,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:42,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:42,078 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:42,078 INFO L175 Difference]: Start difference. First operand has 41 places, 28 transitions, 109 flow. Second operand 3 states and 417 transitions. [2023-08-30 15:40:42,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 149 flow [2023-08-30 15:40:42,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 135 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 15:40:42,080 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 87 flow [2023-08-30 15:40:42,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-08-30 15:40:42,081 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2023-08-30 15:40:42,081 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 87 flow [2023-08-30 15:40:42,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:42,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:40:42,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:40:42,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:40:42,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:40:42,287 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:40:42,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:40:42,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2041115723, now seen corresponding path program 1 times [2023-08-30 15:40:42,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:40:42,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210450539] [2023-08-30 15:40:42,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:42,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:40:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:42,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:40:42,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:40:42,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210450539] [2023-08-30 15:40:42,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210450539] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:40:42,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477017686] [2023-08-30 15:40:42,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:42,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:40:42,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:40:42,342 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:40:42,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:40:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:42,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:40:42,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:40:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:40:42,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:40:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:40:42,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477017686] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:40:42,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:40:42,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-30 15:40:42,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796413986] [2023-08-30 15:40:42,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:40:42,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:40:42,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:40:42,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:40:42,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:40:42,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 279 [2023-08-30 15:40:42,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 87 flow. Second operand has 13 states, 13 states have (on average 123.53846153846153) internal successors, (1606), 13 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:42,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:40:42,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 279 [2023-08-30 15:40:42,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:40:43,297 INFO L130 PetriNetUnfolder]: 2824/4039 cut-off events. [2023-08-30 15:40:43,297 INFO L131 PetriNetUnfolder]: For 279/279 co-relation queries the response was YES. [2023-08-30 15:40:43,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9178 conditions, 4039 events. 2824/4039 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 22335 event pairs, 276 based on Foata normal form. 26/2583 useless extension candidates. Maximal degree in co-relation 9168. Up to 983 conditions per place. [2023-08-30 15:40:43,318 INFO L137 encePairwiseOnDemand]: 270/279 looper letters, 107 selfloop transitions, 14 changer transitions 7/129 dead transitions. [2023-08-30 15:40:43,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 129 transitions, 598 flow [2023-08-30 15:40:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 15:40:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 15:40:43,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1722 transitions. [2023-08-30 15:40:43,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4747725392886683 [2023-08-30 15:40:43,323 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1722 transitions. [2023-08-30 15:40:43,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1722 transitions. [2023-08-30 15:40:43,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:40:43,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1722 transitions. [2023-08-30 15:40:43,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 132.46153846153845) internal successors, (1722), 13 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:43,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 279.0) internal successors, (3906), 14 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:43,334 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 279.0) internal successors, (3906), 14 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:43,334 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 87 flow. Second operand 13 states and 1722 transitions. [2023-08-30 15:40:43,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 129 transitions, 598 flow [2023-08-30 15:40:43,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 129 transitions, 597 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:40:43,337 INFO L231 Difference]: Finished difference. Result has 56 places, 36 transitions, 192 flow [2023-08-30 15:40:43,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=192, PETRI_PLACES=56, PETRI_TRANSITIONS=36} [2023-08-30 15:40:43,338 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2023-08-30 15:40:43,338 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 36 transitions, 192 flow [2023-08-30 15:40:43,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 123.53846153846153) internal successors, (1606), 13 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:43,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:40:43,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:40:43,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:40:43,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:40:43,545 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:40:43,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:40:43,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1145963983, now seen corresponding path program 1 times [2023-08-30 15:40:43,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:40:43,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974634451] [2023-08-30 15:40:43,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:43,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:40:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:43,594 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 15:40:43,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:40:43,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974634451] [2023-08-30 15:40:43,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974634451] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:40:43,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:40:43,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:40:43,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869138240] [2023-08-30 15:40:43,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:40:43,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:40:43,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:40:43,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:40:43,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:40:43,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 279 [2023-08-30 15:40:43,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 36 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:43,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:40:43,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 279 [2023-08-30 15:40:43,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:40:43,994 INFO L130 PetriNetUnfolder]: 2849/4370 cut-off events. [2023-08-30 15:40:43,994 INFO L131 PetriNetUnfolder]: For 10759/11349 co-relation queries the response was YES. [2023-08-30 15:40:44,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13080 conditions, 4370 events. 2849/4370 cut-off events. For 10759/11349 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 25043 event pairs, 1616 based on Foata normal form. 710/4306 useless extension candidates. Maximal degree in co-relation 13060. Up to 3115 conditions per place. [2023-08-30 15:40:44,022 INFO L137 encePairwiseOnDemand]: 275/279 looper letters, 52 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-30 15:40:44,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 400 flow [2023-08-30 15:40:44,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:40:44,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:40:44,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-08-30 15:40:44,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149342891278376 [2023-08-30 15:40:44,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-08-30 15:40:44,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-08-30 15:40:44,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:40:44,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-08-30 15:40:44,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:44,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:44,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:44,028 INFO L175 Difference]: Start difference. First operand has 56 places, 36 transitions, 192 flow. Second operand 3 states and 431 transitions. [2023-08-30 15:40:44,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 400 flow [2023-08-30 15:40:44,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 378 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-30 15:40:44,039 INFO L231 Difference]: Finished difference. Result has 56 places, 37 transitions, 190 flow [2023-08-30 15:40:44,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=56, PETRI_TRANSITIONS=37} [2023-08-30 15:40:44,041 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2023-08-30 15:40:44,042 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 37 transitions, 190 flow [2023-08-30 15:40:44,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:44,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:40:44,042 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 15:40:44,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 15:40:44,043 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:40:44,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:40:44,043 INFO L85 PathProgramCache]: Analyzing trace with hash -428394793, now seen corresponding path program 1 times [2023-08-30 15:40:44,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:40:44,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60324609] [2023-08-30 15:40:44,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:44,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:40:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:44,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:40:44,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:40:44,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60324609] [2023-08-30 15:40:44,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60324609] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:40:44,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980753894] [2023-08-30 15:40:44,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:44,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:40:44,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:40:44,111 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:40:44,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:40:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:44,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 15:40:44,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:40:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:40:44,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:40:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:40:44,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980753894] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:40:44,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:40:44,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2023-08-30 15:40:44,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279898672] [2023-08-30 15:40:44,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:40:44,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 15:40:44,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:40:44,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 15:40:44,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-08-30 15:40:44,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 279 [2023-08-30 15:40:44,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 37 transitions, 190 flow. Second operand has 18 states, 18 states have (on average 123.38888888888889) internal successors, (2221), 18 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:44,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:40:44,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 279 [2023-08-30 15:40:44,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:40:45,474 INFO L130 PetriNetUnfolder]: 2195/3444 cut-off events. [2023-08-30 15:40:45,474 INFO L131 PetriNetUnfolder]: For 7007/7318 co-relation queries the response was YES. [2023-08-30 15:40:45,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10570 conditions, 3444 events. 2195/3444 cut-off events. For 7007/7318 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 20935 event pairs, 112 based on Foata normal form. 593/3747 useless extension candidates. Maximal degree in co-relation 10549. Up to 717 conditions per place. [2023-08-30 15:40:45,499 INFO L137 encePairwiseOnDemand]: 270/279 looper letters, 196 selfloop transitions, 21 changer transitions 14/232 dead transitions. [2023-08-30 15:40:45,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 232 transitions, 1308 flow [2023-08-30 15:40:45,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 15:40:45,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 15:40:45,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2906 transitions. [2023-08-30 15:40:45,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734441186054089 [2023-08-30 15:40:45,508 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2906 transitions. [2023-08-30 15:40:45,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2906 transitions. [2023-08-30 15:40:45,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:40:45,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2906 transitions. [2023-08-30 15:40:45,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.0909090909091) internal successors, (2906), 22 states have internal predecessors, (2906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:45,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 279.0) internal successors, (6417), 23 states have internal predecessors, (6417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:45,528 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 279.0) internal successors, (6417), 23 states have internal predecessors, (6417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:45,528 INFO L175 Difference]: Start difference. First operand has 56 places, 37 transitions, 190 flow. Second operand 22 states and 2906 transitions. [2023-08-30 15:40:45,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 232 transitions, 1308 flow [2023-08-30 15:40:45,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 232 transitions, 1273 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 15:40:45,540 INFO L231 Difference]: Finished difference. Result has 80 places, 42 transitions, 268 flow [2023-08-30 15:40:45,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=268, PETRI_PLACES=80, PETRI_TRANSITIONS=42} [2023-08-30 15:40:45,542 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2023-08-30 15:40:45,542 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 42 transitions, 268 flow [2023-08-30 15:40:45,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 123.38888888888889) internal successors, (2221), 18 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:45,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:40:45,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:40:45,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:40:45,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:40:45,749 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:40:45,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:40:45,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1165143157, now seen corresponding path program 1 times [2023-08-30 15:40:45,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:40:45,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676536760] [2023-08-30 15:40:45,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:45,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:40:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:40:45,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:40:45,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676536760] [2023-08-30 15:40:45,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676536760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:40:45,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:40:45,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:40:45,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101999347] [2023-08-30 15:40:45,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:40:45,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:40:45,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:40:45,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:40:45,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:40:45,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 279 [2023-08-30 15:40:45,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 42 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:45,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:40:45,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 279 [2023-08-30 15:40:45,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:40:46,071 INFO L130 PetriNetUnfolder]: 1923/3032 cut-off events. [2023-08-30 15:40:46,071 INFO L131 PetriNetUnfolder]: For 7719/7966 co-relation queries the response was YES. [2023-08-30 15:40:46,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10007 conditions, 3032 events. 1923/3032 cut-off events. For 7719/7966 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 17758 event pairs, 186 based on Foata normal form. 247/3197 useless extension candidates. Maximal degree in co-relation 9980. Up to 2580 conditions per place. [2023-08-30 15:40:46,089 INFO L137 encePairwiseOnDemand]: 277/279 looper letters, 38 selfloop transitions, 1 changer transitions 22/62 dead transitions. [2023-08-30 15:40:46,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 62 transitions, 510 flow [2023-08-30 15:40:46,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:40:46,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:40:46,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2023-08-30 15:40:46,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5077658303464755 [2023-08-30 15:40:46,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2023-08-30 15:40:46,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2023-08-30 15:40:46,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:40:46,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2023-08-30 15:40:46,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:46,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:46,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:46,094 INFO L175 Difference]: Start difference. First operand has 80 places, 42 transitions, 268 flow. Second operand 3 states and 425 transitions. [2023-08-30 15:40:46,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 62 transitions, 510 flow [2023-08-30 15:40:46,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 62 transitions, 462 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-08-30 15:40:46,106 INFO L231 Difference]: Finished difference. Result has 73 places, 29 transitions, 157 flow [2023-08-30 15:40:46,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=73, PETRI_TRANSITIONS=29} [2023-08-30 15:40:46,108 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2023-08-30 15:40:46,108 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 29 transitions, 157 flow [2023-08-30 15:40:46,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:46,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:40:46,108 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-08-30 15:40:46,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 15:40:46,109 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:40:46,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:40:46,109 INFO L85 PathProgramCache]: Analyzing trace with hash 464074586, now seen corresponding path program 2 times [2023-08-30 15:40:46,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:40:46,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771720728] [2023-08-30 15:40:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:40:46,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:40:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:40:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:40:46,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:40:46,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771720728] [2023-08-30 15:40:46,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771720728] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:40:46,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178488090] [2023-08-30 15:40:46,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:40:46,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:40:46,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:40:46,193 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:40:46,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:40:46,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:40:46,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:40:46,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:40:46,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:40:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-30 15:40:46,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:40:46,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178488090] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:40:46,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:40:46,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 15:40:46,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37201951] [2023-08-30 15:40:46,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:40:46,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:40:46,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:40:46,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:40:46,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:40:46,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 279 [2023-08-30 15:40:46,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 29 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:46,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:40:46,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 279 [2023-08-30 15:40:46,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:40:46,423 INFO L130 PetriNetUnfolder]: 747/1170 cut-off events. [2023-08-30 15:40:46,423 INFO L131 PetriNetUnfolder]: For 5742/5928 co-relation queries the response was YES. [2023-08-30 15:40:46,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3479 conditions, 1170 events. 747/1170 cut-off events. For 5742/5928 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5747 event pairs, 598 based on Foata normal form. 242/1404 useless extension candidates. Maximal degree in co-relation 3456. Up to 1162 conditions per place. [2023-08-30 15:40:46,428 INFO L137 encePairwiseOnDemand]: 276/279 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-08-30 15:40:46,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 27 transitions, 173 flow [2023-08-30 15:40:46,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:40:46,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:40:46,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2023-08-30 15:40:46,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946236559139785 [2023-08-30 15:40:46,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 414 transitions. [2023-08-30 15:40:46,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 414 transitions. [2023-08-30 15:40:46,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:40:46,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 414 transitions. [2023-08-30 15:40:46,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:46,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:46,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:46,434 INFO L175 Difference]: Start difference. First operand has 73 places, 29 transitions, 157 flow. Second operand 3 states and 414 transitions. [2023-08-30 15:40:46,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 27 transitions, 173 flow [2023-08-30 15:40:46,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 27 transitions, 156 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-30 15:40:46,436 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-08-30 15:40:46,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-08-30 15:40:46,436 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2023-08-30 15:40:46,437 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-08-30 15:40:46,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:40:46,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-08-30 15:40:46,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-30 15:40:46,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-30 15:40:46,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-30 15:40:46,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-30 15:40:46,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-30 15:40:46,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2023-08-30 15:40:46,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2023-08-30 15:40:46,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2023-08-30 15:40:46,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-30 15:40:46,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-30 15:40:46,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-30 15:40:46,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-30 15:40:46,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 15:40:46,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:40:46,647 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:40:46,652 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 15:40:46,652 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 15:40:46,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:40:46 BasicIcfg [2023-08-30 15:40:46,655 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 15:40:46,655 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 15:40:46,655 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 15:40:46,655 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 15:40:46,656 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:40:33" (3/4) ... [2023-08-30 15:40:46,659 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 15:40:46,663 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 15:40:46,664 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 15:40:46,664 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 15:40:46,671 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-08-30 15:40:46,672 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 15:40:46,672 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 15:40:46,672 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 15:40:46,715 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 15:40:46,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 15:40:46,717 INFO L158 Benchmark]: Toolchain (without parser) took 14480.29ms. Allocated memory was 62.9MB in the beginning and 610.3MB in the end (delta: 547.4MB). Free memory was 30.0MB in the beginning and 534.6MB in the end (delta: -504.6MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2023-08-30 15:40:46,717 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory was 40.8MB in the beginning and 40.8MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:40:46,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.92ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 29.9MB in the beginning and 55.0MB in the end (delta: -25.2MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2023-08-30 15:40:46,718 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.73ms. Allocated memory is still 79.7MB. Free memory was 54.8MB in the beginning and 53.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:40:46,718 INFO L158 Benchmark]: Boogie Preprocessor took 55.47ms. Allocated memory is still 79.7MB. Free memory was 53.0MB in the beginning and 51.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:40:46,718 INFO L158 Benchmark]: RCFGBuilder took 553.29ms. Allocated memory is still 79.7MB. Free memory was 51.5MB in the beginning and 53.0MB in the end (delta: -1.5MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2023-08-30 15:40:46,719 INFO L158 Benchmark]: TraceAbstraction took 13439.04ms. Allocated memory was 79.7MB in the beginning and 610.3MB in the end (delta: 530.6MB). Free memory was 52.4MB in the beginning and 537.2MB in the end (delta: -484.7MB). Peak memory consumption was 283.7MB. Max. memory is 16.1GB. [2023-08-30 15:40:46,719 INFO L158 Benchmark]: Witness Printer took 60.87ms. Allocated memory is still 610.3MB. Free memory was 537.2MB in the beginning and 534.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:40:46,721 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory was 40.8MB in the beginning and 40.8MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.92ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 29.9MB in the beginning and 55.0MB in the end (delta: -25.2MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.73ms. Allocated memory is still 79.7MB. Free memory was 54.8MB in the beginning and 53.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.47ms. Allocated memory is still 79.7MB. Free memory was 53.0MB in the beginning and 51.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 553.29ms. Allocated memory is still 79.7MB. Free memory was 51.5MB in the beginning and 53.0MB in the end (delta: -1.5MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * TraceAbstraction took 13439.04ms. Allocated memory was 79.7MB in the beginning and 610.3MB in the end (delta: 530.6MB). Free memory was 52.4MB in the beginning and 537.2MB in the end (delta: -484.7MB). Peak memory consumption was 283.7MB. Max. memory is 16.1GB. * Witness Printer took 60.87ms. Allocated memory is still 610.3MB. Free memory was 537.2MB in the beginning and 534.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 127 PlacesBefore, 31 PlacesAfterwards, 126 TransitionsBefore, 24 TransitionsAfterwards, 1352 CoEnabledTransitionPairs, 7 FixpointIterations, 73 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 129 TotalNumberOfCompositions, 1683 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1434, independent: 1409, independent conditional: 0, independent unconditional: 1409, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 749, independent: 735, independent conditional: 0, independent unconditional: 735, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1434, independent: 674, independent conditional: 0, independent unconditional: 674, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 749, unknown conditional: 0, unknown unconditional: 749] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 108]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 108]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 174 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.3s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1398 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1243 mSDsluCounter, 357 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 332 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2478 IncrementalHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 25 mSDtfsCounter, 2478 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=268occurred in iteration=9, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 106 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 333 SizeOfPredicates, 8 NumberOfNonLiveVariables, 784 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 43/71 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 15:40:46,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE