./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/test-context1.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/test-context1.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 a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:03:56,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:03:56,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:03:56,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:03:56,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:03:56,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:03:56,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:03:56,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:03:56,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:03:56,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:03:56,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:03:56,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:03:56,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:03:56,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:03:56,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:03:56,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:03:56,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:03:56,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:03:56,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:03:56,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:03:56,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:03:56,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:03:56,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:03:56,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:03:56,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:03:56,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:03:56,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:03:56,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:03:56,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:03:56,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:03:56,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:03:56,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:03:56,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:03:56,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:03:56,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:03:56,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:03:56,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:03:56,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:03:56,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:03:56,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:03:56,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:03:56,459 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:03:56,490 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:03:56,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:03:56,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:03:56,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:03:56,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:03:56,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:03:56,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:03:56,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:03:56,495 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:03:56,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:03:56,496 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:03:56,496 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:03:56,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:03:56,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:03:56,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:03:56,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:03:56,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:03:56,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:03:56,497 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:03:56,497 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:03:56,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:03:56,498 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:03:56,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:03:56,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:03:56,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:03:56,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:03:56,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:03:56,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:03:56,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:03:56,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:03:56,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:03:56,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:03:56,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:03:56,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:03:56,500 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:03:56,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:03:56,501 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:03:56,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 12:03:56,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:03:56,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:03:56,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:03:56,833 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:03:56,833 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:03:56,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-context1.wvr.c [2023-08-30 12:03:58,069 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:03:58,256 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:03:58,257 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c [2023-08-30 12:03:58,263 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df18b63e5/1ee5ca5a883049e98871bfc093fe81cc/FLAG8e88feb43 [2023-08-30 12:03:58,281 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df18b63e5/1ee5ca5a883049e98871bfc093fe81cc [2023-08-30 12:03:58,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:03:58,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:03:58,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:03:58,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:03:58,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:03:58,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:03:58" (1/1) ... [2023-08-30 12:03:58,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d435df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:03:58, skipping insertion in model container [2023-08-30 12:03:58,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:03:58" (1/1) ... [2023-08-30 12:03:58,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:03:58,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:03:58,445 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/test-context1.wvr.c[2433,2446] [2023-08-30 12:03:58,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:03:58,456 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:03:58,473 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/test-context1.wvr.c[2433,2446] [2023-08-30 12:03:58,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:03:58,483 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:03:58,483 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:03:58,490 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:03:58,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:03:58 WrapperNode [2023-08-30 12:03:58,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:03:58,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:03:58,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:03:58,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:03:58,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:03:58" (1/1) ... [2023-08-30 12:03:58,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:03:58" (1/1) ... [2023-08-30 12:03:58,525 INFO L138 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 153 [2023-08-30 12:03:58,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:03:58,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:03:58,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:03:58,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:03:58,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:03:58" (1/1) ... [2023-08-30 12:03:58,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:03:58" (1/1) ... [2023-08-30 12:03:58,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:03:58" (1/1) ... [2023-08-30 12:03:58,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:03:58" (1/1) ... [2023-08-30 12:03:58,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:03:58" (1/1) ... [2023-08-30 12:03:58,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:03:58" (1/1) ... [2023-08-30 12:03:58,569 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:03:58" (1/1) ... [2023-08-30 12:03:58,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:03:58" (1/1) ... [2023-08-30 12:03:58,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:03:58,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:03:58,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:03:58,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:03:58,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:03:58" (1/1) ... [2023-08-30 12:03:58,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:03:58,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:58,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 12:03:58,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 12:03:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:03:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 12:03:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 12:03:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 12:03:58,654 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 12:03:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:03:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:03:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:03:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 12:03:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 12:03:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 12:03:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:03:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:03:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:03:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:03:58,669 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 12:03:58,779 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:03:58,781 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:03:59,085 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:03:59,367 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:03:59,367 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 12:03:59,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:03:59 BoogieIcfgContainer [2023-08-30 12:03:59,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:03:59,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:03:59,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:03:59,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:03:59,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:03:58" (1/3) ... [2023-08-30 12:03:59,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3246181e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:03:59, skipping insertion in model container [2023-08-30 12:03:59,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:03:58" (2/3) ... [2023-08-30 12:03:59,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3246181e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:03:59, skipping insertion in model container [2023-08-30 12:03:59,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:03:59" (3/3) ... [2023-08-30 12:03:59,378 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2023-08-30 12:03:59,385 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:03:59,393 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:03:59,394 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 12:03:59,394 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:03:59,480 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 12:03:59,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 124 transitions, 264 flow [2023-08-30 12:03:59,591 INFO L130 PetriNetUnfolder]: 9/122 cut-off events. [2023-08-30 12:03:59,591 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:03:59,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 122 events. 9/122 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 132 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-08-30 12:03:59,597 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 124 transitions, 264 flow [2023-08-30 12:03:59,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 106 transitions, 221 flow [2023-08-30 12:03:59,611 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:03:59,625 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 106 transitions, 221 flow [2023-08-30 12:03:59,628 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 106 transitions, 221 flow [2023-08-30 12:03:59,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 106 transitions, 221 flow [2023-08-30 12:03:59,673 INFO L130 PetriNetUnfolder]: 8/106 cut-off events. [2023-08-30 12:03:59,674 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:03:59,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 106 events. 8/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 129 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-08-30 12:03:59,677 INFO L119 LiptonReduction]: Number of co-enabled transitions 904 [2023-08-30 12:04:05,769 INFO L134 LiptonReduction]: Checked pairs total: 1362 [2023-08-30 12:04:05,769 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-08-30 12:04:05,782 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:04:05,800 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;@8b6287, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:04:05,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-30 12:04:05,802 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 12:04:05,803 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:04:05,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:05,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 12:04:05,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 12:04:05,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:05,809 INFO L85 PathProgramCache]: Analyzing trace with hash 20531, now seen corresponding path program 1 times [2023-08-30 12:04:05,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:05,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665205806] [2023-08-30 12:04:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:05,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:06,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:06,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665205806] [2023-08-30 12:04:06,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665205806] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:06,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:06,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:04:06,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882631472] [2023-08-30 12:04:06,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:06,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:04:06,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:06,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:04:06,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:04:06,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 252 [2023-08-30 12:04:06,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:06,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:06,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 252 [2023-08-30 12:04:06,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:06,304 INFO L130 PetriNetUnfolder]: 187/329 cut-off events. [2023-08-30 12:04:06,304 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 12:04:06,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 329 events. 187/329 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1237 event pairs, 138 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 300. Up to 167 conditions per place. [2023-08-30 12:04:06,311 INFO L137 encePairwiseOnDemand]: 242/252 looper letters, 37 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-08-30 12:04:06,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 39 transitions, 174 flow [2023-08-30 12:04:06,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:04:06,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:04:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-08-30 12:04:06,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2023-08-30 12:04:06,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-08-30 12:04:06,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-08-30 12:04:06,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:06,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-08-30 12:04:06,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:06,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:06,411 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:06,413 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 63 flow. Second operand 3 states and 344 transitions. [2023-08-30 12:04:06,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 39 transitions, 174 flow [2023-08-30 12:04:06,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 39 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:04:06,424 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 60 flow [2023-08-30 12:04:06,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2023-08-30 12:04:06,430 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -6 predicate places. [2023-08-30 12:04:06,431 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 60 flow [2023-08-30 12:04:06,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:06,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:06,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 12:04:06,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:04:06,436 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 12:04:06,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:06,444 INFO L85 PathProgramCache]: Analyzing trace with hash 637276, now seen corresponding path program 1 times [2023-08-30 12:04:06,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:06,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332478780] [2023-08-30 12:04:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:06,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:06,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:06,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:06,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332478780] [2023-08-30 12:04:06,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332478780] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:06,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289507845] [2023-08-30 12:04:06,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:06,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:06,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:06,628 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:04:06,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 12:04:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:06,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:04:06,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:06,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:04:06,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289507845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:06,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:04:06,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 12:04:06,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724171052] [2023-08-30 12:04:06,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:06,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:04:06,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:06,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:04:06,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:04:06,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 252 [2023-08-30 12:04:06,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:06,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:06,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 252 [2023-08-30 12:04:06,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:06,892 INFO L130 PetriNetUnfolder]: 187/328 cut-off events. [2023-08-30 12:04:06,893 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:04:06,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 328 events. 187/328 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1223 event pairs, 138 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 343. Up to 165 conditions per place. [2023-08-30 12:04:06,895 INFO L137 encePairwiseOnDemand]: 249/252 looper letters, 36 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-30 12:04:06,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 38 transitions, 170 flow [2023-08-30 12:04:06,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:04:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:04:06,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2023-08-30 12:04:06,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2023-08-30 12:04:06,898 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 427 transitions. [2023-08-30 12:04:06,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 427 transitions. [2023-08-30 12:04:06,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:06,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 427 transitions. [2023-08-30 12:04:06,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:06,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:06,903 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:06,903 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 60 flow. Second operand 4 states and 427 transitions. [2023-08-30 12:04:06,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 38 transitions, 170 flow [2023-08-30 12:04:06,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 38 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:04:06,905 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 58 flow [2023-08-30 12:04:06,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2023-08-30 12:04:06,905 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -5 predicate places. [2023-08-30 12:04:06,906 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 58 flow [2023-08-30 12:04:06,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:06,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:06,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 12:04:06,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 12:04:07,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:07,107 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 12:04:07,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:07,108 INFO L85 PathProgramCache]: Analyzing trace with hash 637277, now seen corresponding path program 1 times [2023-08-30 12:04:07,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:07,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215548958] [2023-08-30 12:04:07,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:07,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:07,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:07,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:07,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215548958] [2023-08-30 12:04:07,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215548958] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:07,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891874070] [2023-08-30 12:04:07,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:07,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:07,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:07,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:04:07,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 12:04:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:07,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:04:07,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:07,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:07,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:04:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:07,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891874070] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:04:07,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:04:07,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 12:04:07,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041904420] [2023-08-30 12:04:07,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:04:07,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:04:07,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:07,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:04:07,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:04:07,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 252 [2023-08-30 12:04:07,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 58 flow. Second operand has 7 states, 7 states have (on average 98.14285714285714) internal successors, (687), 7 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:07,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:07,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 252 [2023-08-30 12:04:07,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:07,652 INFO L130 PetriNetUnfolder]: 466/817 cut-off events. [2023-08-30 12:04:07,652 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:04:07,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1712 conditions, 817 events. 466/817 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3875 event pairs, 345 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 1363. Up to 166 conditions per place. [2023-08-30 12:04:07,657 INFO L137 encePairwiseOnDemand]: 249/252 looper letters, 87 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2023-08-30 12:04:07,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 92 transitions, 406 flow [2023-08-30 12:04:07,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:04:07,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:04:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 677 transitions. [2023-08-30 12:04:07,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44775132275132273 [2023-08-30 12:04:07,661 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 677 transitions. [2023-08-30 12:04:07,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 677 transitions. [2023-08-30 12:04:07,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:07,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 677 transitions. [2023-08-30 12:04:07,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.83333333333333) internal successors, (677), 6 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:07,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:07,668 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:07,668 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 58 flow. Second operand 6 states and 677 transitions. [2023-08-30 12:04:07,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 92 transitions, 406 flow [2023-08-30 12:04:07,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 92 transitions, 403 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:04:07,671 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 91 flow [2023-08-30 12:04:07,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-08-30 12:04:07,671 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-08-30 12:04:07,672 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 91 flow [2023-08-30 12:04:07,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.14285714285714) internal successors, (687), 7 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:07,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:07,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:04:07,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 12:04:07,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 12:04:07,878 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 12:04:07,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:07,878 INFO L85 PathProgramCache]: Analyzing trace with hash 19744847, now seen corresponding path program 1 times [2023-08-30 12:04:07,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:07,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227083311] [2023-08-30 12:04:07,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:07,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:08,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:08,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227083311] [2023-08-30 12:04:08,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227083311] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:08,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:08,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:04:08,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151129192] [2023-08-30 12:04:08,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:08,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:04:08,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:08,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:04:08,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:04:08,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 252 [2023-08-30 12:04:08,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:08,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:08,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 252 [2023-08-30 12:04:08,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:08,227 INFO L130 PetriNetUnfolder]: 396/697 cut-off events. [2023-08-30 12:04:08,235 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:04:08,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 697 events. 396/697 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3196 event pairs, 285 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 1173. Up to 697 conditions per place. [2023-08-30 12:04:08,242 INFO L137 encePairwiseOnDemand]: 250/252 looper letters, 22 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-08-30 12:04:08,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 23 transitions, 135 flow [2023-08-30 12:04:08,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:04:08,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:04:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-08-30 12:04:08,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4193121693121693 [2023-08-30 12:04:08,244 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-08-30 12:04:08,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-08-30 12:04:08,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:08,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-08-30 12:04:08,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:08,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:08,259 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:08,260 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 91 flow. Second operand 3 states and 317 transitions. [2023-08-30 12:04:08,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 23 transitions, 135 flow [2023-08-30 12:04:08,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 127 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 12:04:08,263 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 83 flow [2023-08-30 12:04:08,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-08-30 12:04:08,265 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-08-30 12:04:08,265 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 83 flow [2023-08-30 12:04:08,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:08,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:08,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:04:08,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 12:04:08,266 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 12:04:08,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:08,266 INFO L85 PathProgramCache]: Analyzing trace with hash 19744844, now seen corresponding path program 1 times [2023-08-30 12:04:08,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:08,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378260663] [2023-08-30 12:04:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:08,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:08,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:08,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378260663] [2023-08-30 12:04:08,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378260663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:08,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:08,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:04:08,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590339150] [2023-08-30 12:04:08,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:08,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:04:08,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:08,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:04:08,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:04:08,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 252 [2023-08-30 12:04:08,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:08,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:08,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 252 [2023-08-30 12:04:08,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:09,173 INFO L130 PetriNetUnfolder]: 526/967 cut-off events. [2023-08-30 12:04:09,173 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 12:04:09,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2054 conditions, 967 events. 526/967 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5237 event pairs, 205 based on Foata normal form. 0/497 useless extension candidates. Maximal degree in co-relation 2042. Up to 711 conditions per place. [2023-08-30 12:04:09,178 INFO L137 encePairwiseOnDemand]: 246/252 looper letters, 28 selfloop transitions, 2 changer transitions 3/33 dead transitions. [2023-08-30 12:04:09,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 172 flow [2023-08-30 12:04:09,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:04:09,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:04:09,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2023-08-30 12:04:09,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2023-08-30 12:04:09,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2023-08-30 12:04:09,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2023-08-30 12:04:09,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:09,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2023-08-30 12:04:09,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:09,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:09,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:09,184 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 83 flow. Second operand 3 states and 330 transitions. [2023-08-30 12:04:09,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 172 flow [2023-08-30 12:04:09,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:04:09,186 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 100 flow [2023-08-30 12:04:09,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-08-30 12:04:09,187 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2023-08-30 12:04:09,187 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 100 flow [2023-08-30 12:04:09,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:09,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:09,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:04:09,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:04:09,188 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 12:04:09,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:09,189 INFO L85 PathProgramCache]: Analyzing trace with hash 19744848, now seen corresponding path program 1 times [2023-08-30 12:04:09,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:09,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235921772] [2023-08-30 12:04:09,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:09,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:09,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:09,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235921772] [2023-08-30 12:04:09,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235921772] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:09,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:09,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:04:09,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813101096] [2023-08-30 12:04:09,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:09,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:04:09,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:09,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:04:09,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:04:09,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 252 [2023-08-30 12:04:09,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:09,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:09,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 252 [2023-08-30 12:04:09,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:09,407 INFO L130 PetriNetUnfolder]: 676/1177 cut-off events. [2023-08-30 12:04:09,407 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2023-08-30 12:04:09,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2936 conditions, 1177 events. 676/1177 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5998 event pairs, 225 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 2922. Up to 681 conditions per place. [2023-08-30 12:04:09,415 INFO L137 encePairwiseOnDemand]: 247/252 looper letters, 31 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-08-30 12:04:09,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 197 flow [2023-08-30 12:04:09,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:04:09,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:04:09,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-08-30 12:04:09,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2023-08-30 12:04:09,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-08-30 12:04:09,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-08-30 12:04:09,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:09,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-08-30 12:04:09,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:09,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:09,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:09,422 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 100 flow. Second operand 3 states and 328 transitions. [2023-08-30 12:04:09,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 197 flow [2023-08-30 12:04:09,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:04:09,425 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 123 flow [2023-08-30 12:04:09,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-08-30 12:04:09,428 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2023-08-30 12:04:09,428 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 123 flow [2023-08-30 12:04:09,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:09,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:09,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:04:09,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 12:04:09,429 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 12:04:09,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:09,430 INFO L85 PathProgramCache]: Analyzing trace with hash 19744843, now seen corresponding path program 1 times [2023-08-30 12:04:09,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:09,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274745717] [2023-08-30 12:04:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:09,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:09,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:09,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274745717] [2023-08-30 12:04:09,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274745717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:09,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:09,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:04:09,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962016552] [2023-08-30 12:04:09,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:09,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:04:09,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:09,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:04:09,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:04:09,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 252 [2023-08-30 12:04:09,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:09,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:09,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 252 [2023-08-30 12:04:09,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:09,624 INFO L130 PetriNetUnfolder]: 646/1117 cut-off events. [2023-08-30 12:04:09,624 INFO L131 PetriNetUnfolder]: For 218/218 co-relation queries the response was YES. [2023-08-30 12:04:09,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3198 conditions, 1117 events. 646/1117 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5665 event pairs, 225 based on Foata normal form. 0/807 useless extension candidates. Maximal degree in co-relation 3182. Up to 981 conditions per place. [2023-08-30 12:04:09,630 INFO L137 encePairwiseOnDemand]: 249/252 looper letters, 28 selfloop transitions, 2 changer transitions 3/33 dead transitions. [2023-08-30 12:04:09,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 33 transitions, 206 flow [2023-08-30 12:04:09,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:04:09,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:04:09,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-08-30 12:04:09,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2023-08-30 12:04:09,632 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-08-30 12:04:09,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-08-30 12:04:09,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:09,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-08-30 12:04:09,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:09,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:09,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:09,635 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 123 flow. Second operand 3 states and 328 transitions. [2023-08-30 12:04:09,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 33 transitions, 206 flow [2023-08-30 12:04:09,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:04:09,637 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 128 flow [2023-08-30 12:04:09,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2023-08-30 12:04:09,638 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2023-08-30 12:04:09,638 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 128 flow [2023-08-30 12:04:09,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:09,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:09,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:04:09,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:04:09,639 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 12:04:09,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:09,639 INFO L85 PathProgramCache]: Analyzing trace with hash 612090767, now seen corresponding path program 1 times [2023-08-30 12:04:09,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:09,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773736685] [2023-08-30 12:04:09,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:09,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:09,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:09,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773736685] [2023-08-30 12:04:09,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773736685] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:09,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890627394] [2023-08-30 12:04:09,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:09,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:09,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:09,697 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:04:09,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 12:04:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:09,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 12:04:09,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:09,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:09,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:04:09,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890627394] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:09,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:04:09,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-08-30 12:04:09,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183946292] [2023-08-30 12:04:09,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:09,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:04:09,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:09,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:04:09,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:04:09,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 252 [2023-08-30 12:04:09,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:09,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:09,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 252 [2023-08-30 12:04:09,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:10,050 INFO L130 PetriNetUnfolder]: 526/921 cut-off events. [2023-08-30 12:04:10,060 INFO L131 PetriNetUnfolder]: For 307/307 co-relation queries the response was YES. [2023-08-30 12:04:10,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2650 conditions, 921 events. 526/921 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4419 event pairs, 373 based on Foata normal form. 6/735 useless extension candidates. Maximal degree in co-relation 2632. Up to 895 conditions per place. [2023-08-30 12:04:10,066 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 24 selfloop transitions, 2 changer transitions 9/35 dead transitions. [2023-08-30 12:04:10,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 220 flow [2023-08-30 12:04:10,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:04:10,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:04:10,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2023-08-30 12:04:10,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2023-08-30 12:04:10,068 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 402 transitions. [2023-08-30 12:04:10,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 402 transitions. [2023-08-30 12:04:10,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:10,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 402 transitions. [2023-08-30 12:04:10,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:10,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:10,084 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:10,084 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 128 flow. Second operand 4 states and 402 transitions. [2023-08-30 12:04:10,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 220 flow [2023-08-30 12:04:10,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:04:10,086 INFO L231 Difference]: Finished difference. Result has 41 places, 26 transitions, 134 flow [2023-08-30 12:04:10,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=41, PETRI_TRANSITIONS=26} [2023-08-30 12:04:10,087 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2023-08-30 12:04:10,087 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 26 transitions, 134 flow [2023-08-30 12:04:10,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:10,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:10,088 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 12:04:10,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 12:04:10,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:10,294 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 12:04:10,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:10,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1806029428, now seen corresponding path program 2 times [2023-08-30 12:04:10,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:10,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267161017] [2023-08-30 12:04:10,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:10,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:10,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:10,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267161017] [2023-08-30 12:04:10,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267161017] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:10,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167469912] [2023-08-30 12:04:10,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:04:10,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:10,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:10,398 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:04:10,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 12:04:10,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 12:04:10,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:04:10,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:04:10,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 12:04:10,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:04:10,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167469912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:10,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:04:10,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 12:04:10,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279901222] [2023-08-30 12:04:10,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:10,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:04:10,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:10,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:04:10,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 12:04:10,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 252 [2023-08-30 12:04:10,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 26 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:10,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:10,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 252 [2023-08-30 12:04:10,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:10,637 INFO L130 PetriNetUnfolder]: 517/894 cut-off events. [2023-08-30 12:04:10,637 INFO L131 PetriNetUnfolder]: For 291/291 co-relation queries the response was YES. [2023-08-30 12:04:10,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 894 events. 517/894 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4243 event pairs, 364 based on Foata normal form. 1/703 useless extension candidates. Maximal degree in co-relation 2575. Up to 894 conditions per place. [2023-08-30 12:04:10,643 INFO L137 encePairwiseOnDemand]: 250/252 looper letters, 24 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-08-30 12:04:10,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 25 transitions, 174 flow [2023-08-30 12:04:10,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:04:10,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:04:10,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2023-08-30 12:04:10,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.414021164021164 [2023-08-30 12:04:10,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2023-08-30 12:04:10,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2023-08-30 12:04:10,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:10,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2023-08-30 12:04:10,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:10,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:10,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:10,648 INFO L175 Difference]: Start difference. First operand has 41 places, 26 transitions, 134 flow. Second operand 3 states and 313 transitions. [2023-08-30 12:04:10,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 25 transitions, 174 flow [2023-08-30 12:04:10,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 25 transitions, 156 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 12:04:10,650 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 108 flow [2023-08-30 12:04:10,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2023-08-30 12:04:10,651 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2023-08-30 12:04:10,651 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 108 flow [2023-08-30 12:04:10,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:10,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:10,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 12:04:10,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 12:04:10,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:10,857 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 12:04:10,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:10,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1805671877, now seen corresponding path program 1 times [2023-08-30 12:04:10,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:10,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208279713] [2023-08-30 12:04:10,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:10,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:04:11,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:11,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208279713] [2023-08-30 12:04:11,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208279713] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:11,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:11,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:04:11,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682300367] [2023-08-30 12:04:11,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:11,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:04:11,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:11,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:04:11,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:04:11,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 252 [2023-08-30 12:04:11,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:11,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:11,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 252 [2023-08-30 12:04:11,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:11,707 INFO L130 PetriNetUnfolder]: 445/798 cut-off events. [2023-08-30 12:04:11,708 INFO L131 PetriNetUnfolder]: For 228/228 co-relation queries the response was YES. [2023-08-30 12:04:11,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 798 events. 445/798 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3879 event pairs, 164 based on Foata normal form. 24/670 useless extension candidates. Maximal degree in co-relation 2224. Up to 497 conditions per place. [2023-08-30 12:04:11,721 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 29 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-30 12:04:11,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 183 flow [2023-08-30 12:04:11,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:04:11,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:04:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2023-08-30 12:04:11,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421957671957672 [2023-08-30 12:04:11,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2023-08-30 12:04:11,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2023-08-30 12:04:11,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:11,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2023-08-30 12:04:11,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:11,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:11,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:11,729 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 108 flow. Second operand 3 states and 319 transitions. [2023-08-30 12:04:11,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 183 flow [2023-08-30 12:04:11,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:04:11,731 INFO L231 Difference]: Finished difference. Result has 36 places, 24 transitions, 109 flow [2023-08-30 12:04:11,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2023-08-30 12:04:11,732 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2023-08-30 12:04:11,733 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 109 flow [2023-08-30 12:04:11,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:11,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:11,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 12:04:11,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 12:04:11,734 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 12:04:11,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:11,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1805671878, now seen corresponding path program 1 times [2023-08-30 12:04:11,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:11,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510115962] [2023-08-30 12:04:11,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:11,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:04:11,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:11,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510115962] [2023-08-30 12:04:11,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510115962] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:11,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104882108] [2023-08-30 12:04:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:11,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:11,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:11,804 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:04:11,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 12:04:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:11,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:04:11,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:04:11,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:04:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:04:11,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104882108] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:04:11,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:04:11,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 12:04:11,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411406130] [2023-08-30 12:04:11,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:04:11,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:04:11,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:11,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:04:11,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:04:11,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 252 [2023-08-30 12:04:11,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 109 flow. Second operand has 7 states, 7 states have (on average 101.42857142857143) internal successors, (710), 7 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:11,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:11,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 252 [2023-08-30 12:04:11,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:12,206 INFO L130 PetriNetUnfolder]: 1261/2246 cut-off events. [2023-08-30 12:04:12,206 INFO L131 PetriNetUnfolder]: For 1212/1212 co-relation queries the response was YES. [2023-08-30 12:04:12,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6473 conditions, 2246 events. 1261/2246 cut-off events. For 1212/1212 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 13699 event pairs, 252 based on Foata normal form. 40/2014 useless extension candidates. Maximal degree in co-relation 6456. Up to 785 conditions per place. [2023-08-30 12:04:12,220 INFO L137 encePairwiseOnDemand]: 246/252 looper letters, 60 selfloop transitions, 10 changer transitions 3/73 dead transitions. [2023-08-30 12:04:12,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 73 transitions, 442 flow [2023-08-30 12:04:12,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:04:12,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:04:12,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 668 transitions. [2023-08-30 12:04:12,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2023-08-30 12:04:12,223 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 668 transitions. [2023-08-30 12:04:12,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 668 transitions. [2023-08-30 12:04:12,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:12,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 668 transitions. [2023-08-30 12:04:12,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:12,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:12,227 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:12,228 INFO L175 Difference]: Start difference. First operand has 36 places, 24 transitions, 109 flow. Second operand 6 states and 668 transitions. [2023-08-30 12:04:12,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 73 transitions, 442 flow [2023-08-30 12:04:12,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 73 transitions, 420 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 12:04:12,230 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 211 flow [2023-08-30 12:04:12,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-08-30 12:04:12,231 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2023-08-30 12:04:12,231 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 211 flow [2023-08-30 12:04:12,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.42857142857143) internal successors, (710), 7 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:12,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:12,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:12,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 12:04:12,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 12:04:12,438 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 12:04:12,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:12,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1681860594, now seen corresponding path program 1 times [2023-08-30 12:04:12,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:12,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526589558] [2023-08-30 12:04:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:12,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:04:12,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:12,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526589558] [2023-08-30 12:04:12,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526589558] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:12,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69242447] [2023-08-30 12:04:12,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:12,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:12,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:12,683 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:04:12,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 12:04:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:12,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 12:04:12,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:04:12,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:04:12,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69242447] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:12,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:04:12,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-30 12:04:12,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957396293] [2023-08-30 12:04:12,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:12,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:04:12,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:12,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:04:12,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:04:12,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 252 [2023-08-30 12:04:12,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 211 flow. Second operand has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:12,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:12,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 252 [2023-08-30 12:04:12,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:13,059 INFO L130 PetriNetUnfolder]: 1057/1922 cut-off events. [2023-08-30 12:04:13,060 INFO L131 PetriNetUnfolder]: For 3132/3132 co-relation queries the response was YES. [2023-08-30 12:04:13,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6652 conditions, 1922 events. 1057/1922 cut-off events. For 3132/3132 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 11449 event pairs, 452 based on Foata normal form. 152/2074 useless extension candidates. Maximal degree in co-relation 6632. Up to 1260 conditions per place. [2023-08-30 12:04:13,072 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 36 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-08-30 12:04:13,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 327 flow [2023-08-30 12:04:13,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:04:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:04:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 418 transitions. [2023-08-30 12:04:13,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146825396825397 [2023-08-30 12:04:13,075 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 418 transitions. [2023-08-30 12:04:13,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 418 transitions. [2023-08-30 12:04:13,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:13,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 418 transitions. [2023-08-30 12:04:13,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:13,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:13,079 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:13,079 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 211 flow. Second operand 4 states and 418 transitions. [2023-08-30 12:04:13,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 327 flow [2023-08-30 12:04:13,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 327 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 12:04:13,084 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 220 flow [2023-08-30 12:04:13,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2023-08-30 12:04:13,087 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2023-08-30 12:04:13,087 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 220 flow [2023-08-30 12:04:13,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:13,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:13,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:13,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 12:04:13,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:13,297 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 12:04:13,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:13,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1693479089, now seen corresponding path program 1 times [2023-08-30 12:04:13,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:13,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165692012] [2023-08-30 12:04:13,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:13,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:13,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:04:13,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:13,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165692012] [2023-08-30 12:04:13,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165692012] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:13,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111461968] [2023-08-30 12:04:13,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:13,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:13,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:13,738 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:04:13,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 12:04:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:13,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 12:04:13,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:04:14,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:04:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:04:14,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111461968] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:04:14,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:04:14,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 2] total 7 [2023-08-30 12:04:14,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883099584] [2023-08-30 12:04:14,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:04:14,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 12:04:14,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:14,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 12:04:14,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-08-30 12:04:14,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 252 [2023-08-30 12:04:14,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 220 flow. Second operand has 9 states, 9 states have (on average 99.55555555555556) internal successors, (896), 9 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:14,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:14,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 252 [2023-08-30 12:04:14,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:15,230 INFO L130 PetriNetUnfolder]: 1457/2658 cut-off events. [2023-08-30 12:04:15,231 INFO L131 PetriNetUnfolder]: For 5328/5328 co-relation queries the response was YES. [2023-08-30 12:04:15,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9103 conditions, 2658 events. 1457/2658 cut-off events. For 5328/5328 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 17024 event pairs, 244 based on Foata normal form. 312/2970 useless extension candidates. Maximal degree in co-relation 9080. Up to 1205 conditions per place. [2023-08-30 12:04:15,247 INFO L137 encePairwiseOnDemand]: 246/252 looper letters, 50 selfloop transitions, 16 changer transitions 21/87 dead transitions. [2023-08-30 12:04:15,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 87 transitions, 618 flow [2023-08-30 12:04:15,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 12:04:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 12:04:15,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 950 transitions. [2023-08-30 12:04:15,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41887125220458554 [2023-08-30 12:04:15,251 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 950 transitions. [2023-08-30 12:04:15,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 950 transitions. [2023-08-30 12:04:15,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:15,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 950 transitions. [2023-08-30 12:04:15,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.55555555555556) internal successors, (950), 9 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:15,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:15,258 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:15,259 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 220 flow. Second operand 9 states and 950 transitions. [2023-08-30 12:04:15,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 87 transitions, 618 flow [2023-08-30 12:04:15,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 87 transitions, 612 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:04:15,266 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 380 flow [2023-08-30 12:04:15,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=380, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2023-08-30 12:04:15,267 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2023-08-30 12:04:15,267 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 380 flow [2023-08-30 12:04:15,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 99.55555555555556) internal successors, (896), 9 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:15,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:15,268 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 12:04:15,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 12:04:15,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:15,474 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 12:04:15,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:15,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1693866123, now seen corresponding path program 2 times [2023-08-30 12:04:15,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:15,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864443989] [2023-08-30 12:04:15,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:15,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 12:04:15,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:15,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864443989] [2023-08-30 12:04:15,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864443989] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:15,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172444701] [2023-08-30 12:04:15,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:04:15,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:15,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:15,685 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:04:15,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 12:04:15,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 12:04:15,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:04:15,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 12:04:15,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:15,801 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-30 12:04:15,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:04:15,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172444701] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:15,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:04:15,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 12:04:15,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278408472] [2023-08-30 12:04:15,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:15,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:04:15,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:15,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:04:15,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:04:15,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 252 [2023-08-30 12:04:15,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:15,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:15,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 252 [2023-08-30 12:04:15,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:16,051 INFO L130 PetriNetUnfolder]: 1233/2250 cut-off events. [2023-08-30 12:04:16,052 INFO L131 PetriNetUnfolder]: For 8620/8620 co-relation queries the response was YES. [2023-08-30 12:04:16,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8578 conditions, 2250 events. 1233/2250 cut-off events. For 8620/8620 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 13918 event pairs, 920 based on Foata normal form. 152/2402 useless extension candidates. Maximal degree in co-relation 8552. Up to 2250 conditions per place. [2023-08-30 12:04:16,066 INFO L137 encePairwiseOnDemand]: 249/252 looper letters, 39 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-30 12:04:16,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 40 transitions, 434 flow [2023-08-30 12:04:16,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:04:16,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:04:16,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-08-30 12:04:16,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2023-08-30 12:04:16,068 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-08-30 12:04:16,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-08-30 12:04:16,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:16,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-08-30 12:04:16,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:16,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:16,071 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:16,071 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 380 flow. Second operand 3 states and 314 transitions. [2023-08-30 12:04:16,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 40 transitions, 434 flow [2023-08-30 12:04:16,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 40 transitions, 381 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-08-30 12:04:16,085 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 303 flow [2023-08-30 12:04:16,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=303, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-08-30 12:04:16,086 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2023-08-30 12:04:16,086 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 303 flow [2023-08-30 12:04:16,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:16,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:16,087 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:16,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 12:04:16,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 12:04:16,295 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 12:04:16,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:16,296 INFO L85 PathProgramCache]: Analyzing trace with hash 442568441, now seen corresponding path program 2 times [2023-08-30 12:04:16,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:16,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086787188] [2023-08-30 12:04:16,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:16,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:16,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:04:16,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:16,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086787188] [2023-08-30 12:04:16,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086787188] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:16,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833852906] [2023-08-30 12:04:16,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:04:16,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:16,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:16,492 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:04:16,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 12:04:16,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:04:16,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:04:16,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 12:04:16,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:04:16,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:04:16,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:04:16,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833852906] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:04:16,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:04:16,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-30 12:04:16,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539181162] [2023-08-30 12:04:16,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:04:16,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 12:04:16,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:16,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 12:04:16,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-30 12:04:16,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 252 [2023-08-30 12:04:16,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 303 flow. Second operand has 14 states, 14 states have (on average 90.78571428571429) internal successors, (1271), 14 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:16,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:16,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 252 [2023-08-30 12:04:16,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:17,270 INFO L130 PetriNetUnfolder]: 960/1769 cut-off events. [2023-08-30 12:04:17,271 INFO L131 PetriNetUnfolder]: For 4104/4104 co-relation queries the response was YES. [2023-08-30 12:04:17,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6193 conditions, 1769 events. 960/1769 cut-off events. For 4104/4104 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10365 event pairs, 699 based on Foata normal form. 10/1779 useless extension candidates. Maximal degree in co-relation 6168. Up to 1688 conditions per place. [2023-08-30 12:04:17,280 INFO L137 encePairwiseOnDemand]: 247/252 looper letters, 37 selfloop transitions, 3 changer transitions 23/63 dead transitions. [2023-08-30 12:04:17,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 502 flow [2023-08-30 12:04:17,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:04:17,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:04:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 665 transitions. [2023-08-30 12:04:17,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2023-08-30 12:04:17,283 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 665 transitions. [2023-08-30 12:04:17,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 665 transitions. [2023-08-30 12:04:17,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:17,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 665 transitions. [2023-08-30 12:04:17,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:17,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:17,288 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:17,288 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 303 flow. Second operand 7 states and 665 transitions. [2023-08-30 12:04:17,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 502 flow [2023-08-30 12:04:17,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 501 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:04:17,295 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 320 flow [2023-08-30 12:04:17,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=320, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2023-08-30 12:04:17,296 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2023-08-30 12:04:17,296 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 320 flow [2023-08-30 12:04:17,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 90.78571428571429) internal successors, (1271), 14 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:17,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:17,297 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:17,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 12:04:17,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 12:04:17,503 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 12:04:17,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:17,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1403053040, now seen corresponding path program 3 times [2023-08-30 12:04:17,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:17,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512214067] [2023-08-30 12:04:17,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:17,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:17,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:17,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512214067] [2023-08-30 12:04:17,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512214067] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:17,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048568988] [2023-08-30 12:04:17,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 12:04:17,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:17,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:17,722 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:04:17,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 12:04:17,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 12:04:17,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:04:17,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:04:17,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:17,950 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 12:04:17,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:04:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 12:04:17,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048568988] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:04:17,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:04:17,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 10 [2023-08-30 12:04:17,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062405310] [2023-08-30 12:04:17,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:04:17,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 12:04:17,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:17,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 12:04:17,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-08-30 12:04:18,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 252 [2023-08-30 12:04:18,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 320 flow. Second operand has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:18,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:18,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 252 [2023-08-30 12:04:18,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:18,444 INFO L130 PetriNetUnfolder]: 722/1346 cut-off events. [2023-08-30 12:04:18,444 INFO L131 PetriNetUnfolder]: For 3507/3507 co-relation queries the response was YES. [2023-08-30 12:04:18,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4520 conditions, 1346 events. 722/1346 cut-off events. For 3507/3507 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7674 event pairs, 457 based on Foata normal form. 92/1438 useless extension candidates. Maximal degree in co-relation 4490. Up to 1203 conditions per place. [2023-08-30 12:04:18,450 INFO L137 encePairwiseOnDemand]: 245/252 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2023-08-30 12:04:18,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 570 flow [2023-08-30 12:04:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 12:04:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 12:04:18,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 943 transitions. [2023-08-30 12:04:18,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3742063492063492 [2023-08-30 12:04:18,455 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 943 transitions. [2023-08-30 12:04:18,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 943 transitions. [2023-08-30 12:04:18,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:18,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 943 transitions. [2023-08-30 12:04:18,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 94.3) internal successors, (943), 10 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:18,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 252.0) internal successors, (2772), 11 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:18,463 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 252.0) internal successors, (2772), 11 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:18,464 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 320 flow. Second operand 10 states and 943 transitions. [2023-08-30 12:04:18,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 570 flow [2023-08-30 12:04:18,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 528 flow, removed 8 selfloop flow, removed 9 redundant places. [2023-08-30 12:04:18,470 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-08-30 12:04:18,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-08-30 12:04:18,471 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2023-08-30 12:04:18,472 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-08-30 12:04:18,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:18,474 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 28 remaining) [2023-08-30 12:04:18,475 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2023-08-30 12:04:18,475 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2023-08-30 12:04:18,475 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 28 remaining) [2023-08-30 12:04:18,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2023-08-30 12:04:18,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2023-08-30 12:04:18,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2023-08-30 12:04:18,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2023-08-30 12:04:18,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2023-08-30 12:04:18,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2023-08-30 12:04:18,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2023-08-30 12:04:18,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2023-08-30 12:04:18,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2023-08-30 12:04:18,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 28 remaining) [2023-08-30 12:04:18,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 28 remaining) [2023-08-30 12:04:18,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 28 remaining) [2023-08-30 12:04:18,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2023-08-30 12:04:18,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2023-08-30 12:04:18,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 28 remaining) [2023-08-30 12:04:18,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 28 remaining) [2023-08-30 12:04:18,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2023-08-30 12:04:18,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2023-08-30 12:04:18,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2023-08-30 12:04:18,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 28 remaining) [2023-08-30 12:04:18,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2023-08-30 12:04:18,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2023-08-30 12:04:18,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2023-08-30 12:04:18,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2023-08-30 12:04:18,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 12:04:18,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 12:04:18,686 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:18,691 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 12:04:18,691 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 12:04:18,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 12:04:18 BasicIcfg [2023-08-30 12:04:18,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 12:04:18,694 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 12:04:18,694 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 12:04:18,694 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 12:04:18,695 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:03:59" (3/4) ... [2023-08-30 12:04:18,696 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 12:04:18,717 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 12:04:18,717 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 12:04:18,720 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-30 12:04:18,721 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 12:04:18,721 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 12:04:18,721 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 12:04:18,778 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 12:04:18,778 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 12:04:18,793 INFO L158 Benchmark]: Toolchain (without parser) took 20494.32ms. Allocated memory was 73.4MB in the beginning and 272.6MB in the end (delta: 199.2MB). Free memory was 49.0MB in the beginning and 207.3MB in the end (delta: -158.3MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2023-08-30 12:04:18,794 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 73.4MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:04:18,794 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.99ms. Allocated memory is still 73.4MB. Free memory was 48.8MB in the beginning and 37.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 12:04:18,794 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.11ms. Allocated memory is still 73.4MB. Free memory was 37.7MB in the beginning and 35.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:04:18,794 INFO L158 Benchmark]: Boogie Preprocessor took 55.33ms. Allocated memory is still 73.4MB. Free memory was 35.6MB in the beginning and 34.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:04:18,795 INFO L158 Benchmark]: RCFGBuilder took 787.00ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 34.1MB in the beginning and 54.8MB in the end (delta: -20.7MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2023-08-30 12:04:18,795 INFO L158 Benchmark]: TraceAbstraction took 19321.72ms. Allocated memory was 88.1MB in the beginning and 272.6MB in the end (delta: 184.5MB). Free memory was 54.3MB in the beginning and 209.4MB in the end (delta: -155.1MB). Peak memory consumption was 131.2MB. Max. memory is 16.1GB. [2023-08-30 12:04:18,795 INFO L158 Benchmark]: Witness Printer took 84.47ms. Allocated memory is still 272.6MB. Free memory was 209.4MB in the beginning and 207.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:04:18,797 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 73.4MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 204.99ms. Allocated memory is still 73.4MB. Free memory was 48.8MB in the beginning and 37.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.11ms. Allocated memory is still 73.4MB. Free memory was 37.7MB in the beginning and 35.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.33ms. Allocated memory is still 73.4MB. Free memory was 35.6MB in the beginning and 34.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 787.00ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 34.1MB in the beginning and 54.8MB in the end (delta: -20.7MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * TraceAbstraction took 19321.72ms. Allocated memory was 88.1MB in the beginning and 272.6MB in the end (delta: 184.5MB). Free memory was 54.3MB in the beginning and 209.4MB in the end (delta: -155.1MB). Peak memory consumption was 131.2MB. Max. memory is 16.1GB. * Witness Printer took 84.47ms. Allocated memory is still 272.6MB. Free memory was 209.4MB in the beginning and 207.3MB in the end (delta: 2.1MB). 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: 6.1s, 105 PlacesBefore, 31 PlacesAfterwards, 106 TransitionsBefore, 27 TransitionsAfterwards, 904 CoEnabledTransitionPairs, 7 FixpointIterations, 62 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 7 ConcurrentYvCompositions, 5 ChoiceCompositions, 128 TotalNumberOfCompositions, 1362 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1334, independent: 1326, independent conditional: 0, independent unconditional: 1326, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 465, independent: 461, independent conditional: 0, independent unconditional: 461, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1334, independent: 865, independent conditional: 0, independent unconditional: 865, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 465, unknown conditional: 0, unknown unconditional: 465] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, 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: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 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: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: 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, 146 locations, 28 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: 19.2s, OverallIterations: 16, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1020 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 870 mSDsluCounter, 228 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 192 mSDsCounter, 92 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1494 IncrementalHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 92 mSolverCounterUnsat, 36 mSDtfsCounter, 1494 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=380occurred in iteration=13, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 170 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 872 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1345 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 31 InterpolantComputations, 11 PerfectInterpolantSequences, 74/115 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 12:04:18,818 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