./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-simple-queue.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 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:34:22,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:34:22,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:34:22,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:34:22,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:34:22,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:34:22,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:34:22,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:34:22,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:34:22,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:34:22,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:34:22,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:34:22,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:34:22,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:34:22,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:34:22,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:34:22,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:34:22,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:34:22,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:34:22,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:34:22,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:34:22,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:34:22,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:34:22,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:34:22,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:34:22,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:34:22,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:34:22,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:34:22,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:34:22,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:34:22,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:34:22,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:34:22,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:34:22,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:34:22,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:34:22,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:34:22,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:34:22,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:34:22,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:34:22,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:34:22,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:34:22,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:34:22,520 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:34:22,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:34:22,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:34:22,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:34:22,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:34:22,523 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:34:22,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:34:22,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:34:22,524 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:34:22,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:34:22,525 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:34:22,525 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:34:22,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:34:22,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:34:22,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:34:22,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:34:22,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:34:22,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:34:22,526 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:34:22,526 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:34:22,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:34:22,526 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:34:22,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:34:22,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:34:22,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:34:22,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:34:22,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:34:22,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:34:22,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:34:22,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:34:22,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:34:22,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:34:22,529 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:34:22,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:34:22,529 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:34:22,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:34:22,529 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:34:22,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:34:22,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:34:22,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:34:22,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:34:22,876 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:34:22,876 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:34:22,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2023-09-01 08:34:24,027 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:34:24,172 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:34:24,173 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2023-09-01 08:34:24,178 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac14e4841/583ba100b06a4af498f563c3439cf31e/FLAG2e110de32 [2023-09-01 08:34:24,201 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac14e4841/583ba100b06a4af498f563c3439cf31e [2023-09-01 08:34:24,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:34:24,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:34:24,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:34:24,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:34:24,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:34:24,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:34:24" (1/1) ... [2023-09-01 08:34:24,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320a01ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:24, skipping insertion in model container [2023-09-01 08:34:24,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:34:24" (1/1) ... [2023-09-01 08:34:24,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:34:24,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:34:24,368 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c[2438,2451] [2023-09-01 08:34:24,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:34:24,382 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:34:24,419 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c[2438,2451] [2023-09-01 08:34:24,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:34:24,431 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:34:24,431 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:34:24,437 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:34:24,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:24 WrapperNode [2023-09-01 08:34:24,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:34:24,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:34:24,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:34:24,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:34:24,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:24" (1/1) ... [2023-09-01 08:34:24,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:24" (1/1) ... [2023-09-01 08:34:24,492 INFO L138 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 139 [2023-09-01 08:34:24,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:34:24,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:34:24,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:34:24,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:34:24,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:24" (1/1) ... [2023-09-01 08:34:24,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:24" (1/1) ... [2023-09-01 08:34:24,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:24" (1/1) ... [2023-09-01 08:34:24,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:24" (1/1) ... [2023-09-01 08:34:24,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:24" (1/1) ... [2023-09-01 08:34:24,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:24" (1/1) ... [2023-09-01 08:34:24,537 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:24" (1/1) ... [2023-09-01 08:34:24,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:24" (1/1) ... [2023-09-01 08:34:24,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:34:24,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:34:24,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:34:24,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:34:24,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:24" (1/1) ... [2023-09-01 08:34:24,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:34:24,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:24,578 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) [2023-09-01 08:34:24,603 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 [2023-09-01 08:34:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:34:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:34:24,618 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:34:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:34:24,618 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:34:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:34:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:34:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:34:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:34:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:34:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:34:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:34:24,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:34:24,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:34:24,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:34:24,621 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:34:24,730 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:34:24,732 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:34:24,968 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:34:25,138 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:34:25,142 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-09-01 08:34:25,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:34:25 BoogieIcfgContainer [2023-09-01 08:34:25,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:34:25,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:34:25,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:34:25,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:34:25,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:34:24" (1/3) ... [2023-09-01 08:34:25,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9b4671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:34:25, skipping insertion in model container [2023-09-01 08:34:25,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:24" (2/3) ... [2023-09-01 08:34:25,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9b4671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:34:25, skipping insertion in model container [2023-09-01 08:34:25,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:34:25" (3/3) ... [2023-09-01 08:34:25,154 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2023-09-01 08:34:25,161 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:34:25,170 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:34:25,170 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 08:34:25,170 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:34:25,222 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 08:34:25,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 121 transitions, 258 flow [2023-09-01 08:34:25,306 INFO L130 PetriNetUnfolder]: 9/119 cut-off events. [2023-09-01 08:34:25,307 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:34:25,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 119 events. 9/119 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 95 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-09-01 08:34:25,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 121 transitions, 258 flow [2023-09-01 08:34:25,315 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 103 transitions, 215 flow [2023-09-01 08:34:25,319 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:34:25,335 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 103 transitions, 215 flow [2023-09-01 08:34:25,337 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 103 transitions, 215 flow [2023-09-01 08:34:25,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 103 transitions, 215 flow [2023-09-01 08:34:25,365 INFO L130 PetriNetUnfolder]: 8/103 cut-off events. [2023-09-01 08:34:25,366 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:34:25,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 103 events. 8/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-09-01 08:34:25,367 INFO L119 LiptonReduction]: Number of co-enabled transitions 572 [2023-09-01 08:34:29,264 INFO L134 LiptonReduction]: Checked pairs total: 587 [2023-09-01 08:34:29,264 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-09-01 08:34:29,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:34:29,283 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;@7feff36b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:34:29,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-09-01 08:34:29,286 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:34:29,286 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:34:29,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:29,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:34:29,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-09-01 08:34:29,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:29,292 INFO L85 PathProgramCache]: Analyzing trace with hash 16971, now seen corresponding path program 1 times [2023-09-01 08:34:29,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:29,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496389050] [2023-09-01 08:34:29,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:29,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:29,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:34:29,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:29,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496389050] [2023-09-01 08:34:29,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496389050] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:29,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:34:29,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:34:29,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90646877] [2023-09-01 08:34:29,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:29,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:34:29,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:29,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:34:29,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:34:29,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 234 [2023-09-01 08:34:29,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2023-09-01 08:34:29,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:29,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 234 [2023-09-01 08:34:29,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:29,785 INFO L130 PetriNetUnfolder]: 81/147 cut-off events. [2023-09-01 08:34:29,785 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 08:34:29,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 147 events. 81/147 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 393 event pairs, 48 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 120. Up to 76 conditions per place. [2023-09-01 08:34:29,790 INFO L137 encePairwiseOnDemand]: 228/234 looper letters, 29 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-09-01 08:34:29,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 31 transitions, 142 flow [2023-09-01 08:34:29,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:34:29,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:34:29,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2023-09-01 08:34:29,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843304843304843 [2023-09-01 08:34:29,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2023-09-01 08:34:29,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2023-09-01 08:34:29,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:29,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2023-09-01 08:34:29,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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) [2023-09-01 08:34:29,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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) [2023-09-01 08:34:29,826 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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) [2023-09-01 08:34:29,828 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 47 flow. Second operand 3 states and 340 transitions. [2023-09-01 08:34:29,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 31 transitions, 142 flow [2023-09-01 08:34:29,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 31 transitions, 132 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:34:29,834 INFO L231 Difference]: Finished difference. Result has 21 places, 18 transitions, 52 flow [2023-09-01 08:34:29,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=21, PETRI_TRANSITIONS=18} [2023-09-01 08:34:29,840 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -2 predicate places. [2023-09-01 08:34:29,840 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 18 transitions, 52 flow [2023-09-01 08:34:29,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2023-09-01 08:34:29,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:29,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:34:29,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:34:29,845 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-09-01 08:34:29,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:29,847 INFO L85 PathProgramCache]: Analyzing trace with hash 527076, now seen corresponding path program 1 times [2023-09-01 08:34:29,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:29,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989530365] [2023-09-01 08:34:29,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:29,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:29,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:34:29,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:29,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989530365] [2023-09-01 08:34:29,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989530365] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:34:29,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337353735] [2023-09-01 08:34:29,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:29,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:29,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:29,954 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) [2023-09-01 08:34:29,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:34:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:30,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:34:30,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:34:30,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:34:30,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:34:30,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337353735] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:30,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:34:30,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 08:34:30,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912860641] [2023-09-01 08:34:30,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:30,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:34:30,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:30,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:34:30,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:34:30,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 234 [2023-09-01 08:34:30,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 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) [2023-09-01 08:34:30,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:30,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 234 [2023-09-01 08:34:30,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:30,205 INFO L130 PetriNetUnfolder]: 81/146 cut-off events. [2023-09-01 08:34:30,205 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:34:30,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 146 events. 81/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 387 event pairs, 48 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 155. Up to 74 conditions per place. [2023-09-01 08:34:30,206 INFO L137 encePairwiseOnDemand]: 231/234 looper letters, 28 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-09-01 08:34:30,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 30 transitions, 138 flow [2023-09-01 08:34:30,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:34:30,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:34:30,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 435 transitions. [2023-09-01 08:34:30,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46474358974358976 [2023-09-01 08:34:30,208 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 435 transitions. [2023-09-01 08:34:30,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 435 transitions. [2023-09-01 08:34:30,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:30,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 435 transitions. [2023-09-01 08:34:30,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 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) [2023-09-01 08:34:30,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 234.0) internal successors, (1170), 5 states have internal predecessors, (1170), 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) [2023-09-01 08:34:30,213 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 234.0) internal successors, (1170), 5 states have internal predecessors, (1170), 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) [2023-09-01 08:34:30,213 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 52 flow. Second operand 4 states and 435 transitions. [2023-09-01 08:34:30,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 30 transitions, 138 flow [2023-09-01 08:34:30,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 30 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:34:30,214 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 50 flow [2023-09-01 08:34:30,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=50, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2023-09-01 08:34:30,215 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -1 predicate places. [2023-09-01 08:34:30,215 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 50 flow [2023-09-01 08:34:30,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 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) [2023-09-01 08:34:30,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:30,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:34:30,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:34:30,416 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 [2023-09-01 08:34:30,417 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-09-01 08:34:30,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:30,418 INFO L85 PathProgramCache]: Analyzing trace with hash 527083, now seen corresponding path program 1 times [2023-09-01 08:34:30,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:30,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506542171] [2023-09-01 08:34:30,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:30,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:30,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:34:30,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:30,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506542171] [2023-09-01 08:34:30,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506542171] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:34:30,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844277863] [2023-09-01 08:34:30,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:30,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:30,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:30,500 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) [2023-09-01 08:34:30,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:34:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:30,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:34:30,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:34:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:34:30,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:34:30,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:34:30,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844277863] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:34:30,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:34:30,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:34:30,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349300074] [2023-09-01 08:34:30,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:34:30,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:34:30,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:30,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:34:30,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:34:30,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 234 [2023-09-01 08:34:30,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 50 flow. Second operand has 7 states, 7 states have (on average 102.14285714285714) internal successors, (715), 7 states have internal predecessors, (715), 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) [2023-09-01 08:34:30,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:30,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 234 [2023-09-01 08:34:30,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:30,744 INFO L130 PetriNetUnfolder]: 201/362 cut-off events. [2023-09-01 08:34:30,744 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:34:30,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 362 events. 201/362 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1305 event pairs, 120 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 611. Up to 75 conditions per place. [2023-09-01 08:34:30,747 INFO L137 encePairwiseOnDemand]: 231/234 looper letters, 67 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2023-09-01 08:34:30,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 72 transitions, 326 flow [2023-09-01 08:34:30,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:34:30,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:34:30,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 681 transitions. [2023-09-01 08:34:30,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48504273504273504 [2023-09-01 08:34:30,750 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 681 transitions. [2023-09-01 08:34:30,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 681 transitions. [2023-09-01 08:34:30,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:30,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 681 transitions. [2023-09-01 08:34:30,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 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) [2023-09-01 08:34:30,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 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) [2023-09-01 08:34:30,757 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 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) [2023-09-01 08:34:30,757 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 50 flow. Second operand 6 states and 681 transitions. [2023-09-01 08:34:30,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 72 transitions, 326 flow [2023-09-01 08:34:30,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 72 transitions, 323 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:34:30,759 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 83 flow [2023-09-01 08:34:30,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=83, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-09-01 08:34:30,760 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 5 predicate places. [2023-09-01 08:34:30,760 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 83 flow [2023-09-01 08:34:30,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 102.14285714285714) internal successors, (715), 7 states have internal predecessors, (715), 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) [2023-09-01 08:34:30,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:30,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 08:34:30,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:34:30,967 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 [2023-09-01 08:34:30,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-09-01 08:34:30,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:30,968 INFO L85 PathProgramCache]: Analyzing trace with hash 16335025, now seen corresponding path program 1 times [2023-09-01 08:34:30,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:30,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441986451] [2023-09-01 08:34:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:30,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:34:31,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:31,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441986451] [2023-09-01 08:34:31,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441986451] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:31,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:34:31,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:34:31,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639706432] [2023-09-01 08:34:31,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:31,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:34:31,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:31,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:34:31,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:34:31,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 234 [2023-09-01 08:34:31,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2023-09-01 08:34:31,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:31,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 234 [2023-09-01 08:34:31,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:31,156 INFO L130 PetriNetUnfolder]: 170/317 cut-off events. [2023-09-01 08:34:31,156 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:34:31,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 317 events. 170/317 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1157 event pairs, 105 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 621. Up to 291 conditions per place. [2023-09-01 08:34:31,158 INFO L137 encePairwiseOnDemand]: 227/234 looper letters, 18 selfloop transitions, 2 changer transitions 9/29 dead transitions. [2023-09-01 08:34:31,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 163 flow [2023-09-01 08:34:31,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:34:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:34:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 422 transitions. [2023-09-01 08:34:31,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45085470085470086 [2023-09-01 08:34:31,167 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 422 transitions. [2023-09-01 08:34:31,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 422 transitions. [2023-09-01 08:34:31,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:31,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 422 transitions. [2023-09-01 08:34:31,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 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) [2023-09-01 08:34:31,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 234.0) internal successors, (1170), 5 states have internal predecessors, (1170), 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) [2023-09-01 08:34:31,171 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 234.0) internal successors, (1170), 5 states have internal predecessors, (1170), 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) [2023-09-01 08:34:31,171 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 83 flow. Second operand 4 states and 422 transitions. [2023-09-01 08:34:31,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 163 flow [2023-09-01 08:34:31,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 155 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 08:34:31,174 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 91 flow [2023-09-01 08:34:31,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2023-09-01 08:34:31,176 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 9 predicate places. [2023-09-01 08:34:31,176 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 91 flow [2023-09-01 08:34:31,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2023-09-01 08:34:31,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:31,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:34:31,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:34:31,178 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-09-01 08:34:31,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:31,179 INFO L85 PathProgramCache]: Analyzing trace with hash 506545930, now seen corresponding path program 1 times [2023-09-01 08:34:31,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:31,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790008492] [2023-09-01 08:34:31,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:31,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:34:31,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:31,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790008492] [2023-09-01 08:34:31,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790008492] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:34:31,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936085842] [2023-09-01 08:34:31,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:31,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:31,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:31,289 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) [2023-09-01 08:34:31,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:34:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:31,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:34:31,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:34:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:34:31,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:34:31,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936085842] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:31,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:34:31,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-09-01 08:34:31,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718508340] [2023-09-01 08:34:31,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:31,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:34:31,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:31,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:34:31,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:34:31,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 234 [2023-09-01 08:34:31,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2023-09-01 08:34:31,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:31,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 234 [2023-09-01 08:34:31,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:31,403 INFO L130 PetriNetUnfolder]: 85/159 cut-off events. [2023-09-01 08:34:31,404 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-09-01 08:34:31,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 159 events. 85/159 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 438 event pairs, 36 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 398. Up to 159 conditions per place. [2023-09-01 08:34:31,405 INFO L137 encePairwiseOnDemand]: 231/234 looper letters, 6 selfloop transitions, 1 changer transitions 11/18 dead transitions. [2023-09-01 08:34:31,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 18 transitions, 119 flow [2023-09-01 08:34:31,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:34:31,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:34:31,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-09-01 08:34:31,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4586894586894587 [2023-09-01 08:34:31,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-09-01 08:34:31,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-09-01 08:34:31,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:31,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-09-01 08:34:31,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2023-09-01 08:34:31,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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) [2023-09-01 08:34:31,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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) [2023-09-01 08:34:31,410 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 91 flow. Second operand 3 states and 322 transitions. [2023-09-01 08:34:31,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 18 transitions, 119 flow [2023-09-01 08:34:31,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 113 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 08:34:31,412 INFO L231 Difference]: Finished difference. Result has 29 places, 7 transitions, 47 flow [2023-09-01 08:34:31,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=29, PETRI_TRANSITIONS=7} [2023-09-01 08:34:31,412 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 6 predicate places. [2023-09-01 08:34:31,413 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 7 transitions, 47 flow [2023-09-01 08:34:31,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2023-09-01 08:34:31,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:31,413 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:34:31,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:34:31,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:31,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-09-01 08:34:31,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:31,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1476779886, now seen corresponding path program 2 times [2023-09-01 08:34:31,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:31,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475467355] [2023-09-01 08:34:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:31,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:34:31,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:31,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475467355] [2023-09-01 08:34:31,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475467355] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:34:31,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104119778] [2023-09-01 08:34:31,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:34:31,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:31,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:31,739 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) [2023-09-01 08:34:31,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:34:31,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:34:31,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:34:31,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:34:31,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:34:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:34:31,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:34:31,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104119778] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:31,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:34:31,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:34:31,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819545920] [2023-09-01 08:34:31,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:31,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:34:31,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:31,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:34:31,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:34:31,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 234 [2023-09-01 08:34:31,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 7 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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) [2023-09-01 08:34:31,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:31,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 234 [2023-09-01 08:34:31,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:31,846 INFO L130 PetriNetUnfolder]: 1/6 cut-off events. [2023-09-01 08:34:31,846 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 08:34:31,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 6 events. 1/6 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/7 useless extension candidates. Maximal degree in co-relation 25. Up to 6 conditions per place. [2023-09-01 08:34:31,846 INFO L137 encePairwiseOnDemand]: 232/234 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2023-09-01 08:34:31,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 6 transitions, 49 flow [2023-09-01 08:34:31,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:34:31,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:34:31,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-09-01 08:34:31,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44017094017094016 [2023-09-01 08:34:31,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-09-01 08:34:31,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-09-01 08:34:31,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:31,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-09-01 08:34:31,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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) [2023-09-01 08:34:31,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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) [2023-09-01 08:34:31,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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) [2023-09-01 08:34:31,851 INFO L175 Difference]: Start difference. First operand has 29 places, 7 transitions, 47 flow. Second operand 3 states and 309 transitions. [2023-09-01 08:34:31,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 6 transitions, 49 flow [2023-09-01 08:34:31,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 6 transitions, 30 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-09-01 08:34:31,851 INFO L231 Difference]: Finished difference. Result has 12 places, 0 transitions, 0 flow [2023-09-01 08:34:31,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=12, PETRI_TRANSITIONS=0} [2023-09-01 08:34:31,852 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -11 predicate places. [2023-09-01 08:34:31,852 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 0 transitions, 0 flow [2023-09-01 08:34:31,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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) [2023-09-01 08:34:31,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-09-01 08:34:31,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-09-01 08:34:31,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-09-01 08:34:31,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-09-01 08:34:31,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-09-01 08:34:31,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-09-01 08:34:31,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2023-09-01 08:34:31,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2023-09-01 08:34:31,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-09-01 08:34:31,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-09-01 08:34:31,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-09-01 08:34:31,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-09-01 08:34:31,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:34:32,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:32,064 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-09-01 08:34:32,068 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:34:32,068 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:34:32,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:34:32 BasicIcfg [2023-09-01 08:34:32,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:34:32,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:34:32,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:34:32,072 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:34:32,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:34:25" (3/4) ... [2023-09-01 08:34:32,074 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:34:32,079 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:34:32,079 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:34:32,085 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-09-01 08:34:32,085 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 08:34:32,086 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:34:32,086 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:34:32,116 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:34:32,117 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:34:32,117 INFO L158 Benchmark]: Toolchain (without parser) took 7911.89ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 62.6MB in the beginning and 51.3MB in the end (delta: 11.3MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2023-09-01 08:34:32,117 INFO L158 Benchmark]: CDTParser took 3.28ms. Allocated memory is still 65.0MB. Free memory is still 43.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:34:32,118 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.70ms. Allocated memory is still 81.8MB. Free memory was 62.4MB in the beginning and 51.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 08:34:32,118 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.64ms. Allocated memory is still 81.8MB. Free memory was 51.1MB in the beginning and 49.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:34:32,118 INFO L158 Benchmark]: Boogie Preprocessor took 52.46ms. Allocated memory is still 81.8MB. Free memory was 49.4MB in the beginning and 47.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:34:32,118 INFO L158 Benchmark]: RCFGBuilder took 598.28ms. Allocated memory is still 81.8MB. Free memory was 47.8MB in the beginning and 45.2MB in the end (delta: 2.6MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2023-09-01 08:34:32,119 INFO L158 Benchmark]: TraceAbstraction took 6923.57ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 44.7MB in the beginning and 54.3MB in the end (delta: -9.6MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2023-09-01 08:34:32,119 INFO L158 Benchmark]: Witness Printer took 45.31ms. Allocated memory is still 98.6MB. Free memory was 54.3MB in the beginning and 51.3MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:34:32,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.28ms. Allocated memory is still 65.0MB. Free memory is still 43.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.70ms. Allocated memory is still 81.8MB. Free memory was 62.4MB in the beginning and 51.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.64ms. Allocated memory is still 81.8MB. Free memory was 51.1MB in the beginning and 49.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.46ms. Allocated memory is still 81.8MB. Free memory was 49.4MB in the beginning and 47.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 598.28ms. Allocated memory is still 81.8MB. Free memory was 47.8MB in the beginning and 45.2MB in the end (delta: 2.6MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6923.57ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 44.7MB in the beginning and 54.3MB in the end (delta: -9.6MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * Witness Printer took 45.31ms. Allocated memory is still 98.6MB. Free memory was 54.3MB in the beginning and 51.3MB in the end (delta: 3.0MB). 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: 3.9s, 102 PlacesBefore, 23 PlacesAfterwards, 103 TransitionsBefore, 19 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 7 FixpointIterations, 69 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 113 TotalNumberOfCompositions, 587 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 582, independent: 577, independent conditional: 0, independent unconditional: 577, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 305, independent: 304, independent conditional: 0, independent unconditional: 304, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 582, independent: 273, independent conditional: 0, independent unconditional: 273, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 305, unknown conditional: 0, unknown unconditional: 305] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: 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 5 procedures, 135 locations, 12 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: 6.8s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 259 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 198 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 333 IncrementalHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 2 mSDtfsCounter, 333 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=4, InterpolantAutomatonStates: 23, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 40 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 108 SizeOfPredicates, 2 NumberOfNonLiveVariables, 414 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 12/27 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! [2023-09-01 08:34:32,145 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