./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.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/popl20-bad-commit-1.wvr-bad.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 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 --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 11:26:42,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:26:42,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:26:42,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:26:42,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:26:42,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:26:42,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:26:42,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:26:42,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:26:42,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:26:42,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:26:42,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:26:42,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:26:42,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:26:42,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:26:42,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:26:42,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:26:42,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:26:42,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:26:42,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:26:42,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:26:42,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:26:42,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:26:42,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:26:42,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:26:42,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:26:42,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:26:42,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:26:42,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:26:42,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:26:42,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:26:42,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:26:42,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:26:42,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:26:42,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:26:42,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:26:42,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:26:42,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:26:42,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:26:42,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:26:42,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:26:42,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:26:42,535 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:26:42,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:26:42,536 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:26:42,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:26:42,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:26:42,537 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:26:42,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:26:42,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:26:42,538 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:26:42,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:26:42,539 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:26:42,540 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:26:42,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:26:42,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:26:42,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:26:42,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:26:42,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:26:42,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:26:42,541 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:26:42,541 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:26:42,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:26:42,541 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:26:42,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:26:42,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:26:42,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:26:42,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:26:42,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:26:42,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:26:42,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:26:42,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:26:42,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:26:42,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:26:42,544 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:26:42,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:26:42,544 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:26:42,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:26:42,544 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:26:42,545 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:26:42,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:26:42,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:26:42,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:26:42,865 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:26:42,865 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:26:42,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c [2023-08-30 11:26:43,964 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:26:44,128 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:26:44,128 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c [2023-08-30 11:26:44,135 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1216e95cf/378fbd399d2b41568e3b69da2d3be67a/FLAG57962654b [2023-08-30 11:26:44,147 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1216e95cf/378fbd399d2b41568e3b69da2d3be67a [2023-08-30 11:26:44,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:26:44,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:26:44,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:26:44,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:26:44,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:26:44,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:26:44" (1/1) ... [2023-08-30 11:26:44,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8dcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:44, skipping insertion in model container [2023-08-30 11:26:44,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:26:44" (1/1) ... [2023-08-30 11:26:44,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:26:44,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:26:44,354 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2023-08-30 11:26:44,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:26:44,387 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:26:44,428 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2023-08-30 11:26:44,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:26:44,451 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:26:44,452 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:26:44,457 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:26:44,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:44 WrapperNode [2023-08-30 11:26:44,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:26:44,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:26:44,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:26:44,459 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:26:44,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:44" (1/1) ... [2023-08-30 11:26:44,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:44" (1/1) ... [2023-08-30 11:26:44,526 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 372 [2023-08-30 11:26:44,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:26:44,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:26:44,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:26:44,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:26:44,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:44" (1/1) ... [2023-08-30 11:26:44,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:44" (1/1) ... [2023-08-30 11:26:44,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:44" (1/1) ... [2023-08-30 11:26:44,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:44" (1/1) ... [2023-08-30 11:26:44,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:44" (1/1) ... [2023-08-30 11:26:44,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:44" (1/1) ... [2023-08-30 11:26:44,581 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:44" (1/1) ... [2023-08-30 11:26:44,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:44" (1/1) ... [2023-08-30 11:26:44,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:26:44,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:26:44,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:26:44,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:26:44,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:44" (1/1) ... [2023-08-30 11:26:44,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:26:44,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:26:44,634 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 11:26:44,659 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 11:26:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:26:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:26:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:26:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:26:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:26:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:26:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:26:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:26:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:26:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:26:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:26:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:26:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:26:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:26:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:26:44,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:26:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:26:44,682 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 11:26:44,835 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:26:44,837 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:26:45,308 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:26:45,499 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:26:45,501 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 11:26:45,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:26:45 BoogieIcfgContainer [2023-08-30 11:26:45,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:26:45,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:26:45,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:26:45,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:26:45,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:26:44" (1/3) ... [2023-08-30 11:26:45,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148c7fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:26:45, skipping insertion in model container [2023-08-30 11:26:45,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:44" (2/3) ... [2023-08-30 11:26:45,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148c7fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:26:45, skipping insertion in model container [2023-08-30 11:26:45,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:26:45" (3/3) ... [2023-08-30 11:26:45,511 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2023-08-30 11:26:45,518 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:26:45,526 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:26:45,527 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-08-30 11:26:45,527 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:26:45,632 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:26:45,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 293 transitions, 610 flow [2023-08-30 11:26:45,807 INFO L130 PetriNetUnfolder]: 27/290 cut-off events. [2023-08-30 11:26:45,808 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:26:45,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 290 events. 27/290 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 280 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 248. Up to 6 conditions per place. [2023-08-30 11:26:45,815 INFO L82 GeneralOperation]: Start removeDead. Operand has 276 places, 293 transitions, 610 flow [2023-08-30 11:26:45,833 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 272 transitions, 559 flow [2023-08-30 11:26:45,837 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:26:45,845 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 272 transitions, 559 flow [2023-08-30 11:26:45,848 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 272 transitions, 559 flow [2023-08-30 11:26:45,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 272 transitions, 559 flow [2023-08-30 11:26:45,885 INFO L130 PetriNetUnfolder]: 26/272 cut-off events. [2023-08-30 11:26:45,885 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:26:45,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 272 events. 26/272 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 278 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 248. Up to 6 conditions per place. [2023-08-30 11:26:45,889 INFO L119 LiptonReduction]: Number of co-enabled transitions 4260 [2023-08-30 11:26:56,795 INFO L134 LiptonReduction]: Checked pairs total: 4654 [2023-08-30 11:26:56,795 INFO L136 LiptonReduction]: Total number of compositions: 318 [2023-08-30 11:26:56,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:26:56,813 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;@6108eaea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:26:56,813 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-08-30 11:26:56,815 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:26:56,816 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:26:56,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:26:56,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:26:56,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:26:56,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:26:56,821 INFO L85 PathProgramCache]: Analyzing trace with hash 46586, now seen corresponding path program 1 times [2023-08-30 11:26:56,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:26:56,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26014315] [2023-08-30 11:26:56,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:26:56,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:26:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:26:57,063 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 11:26:57,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:26:57,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26014315] [2023-08-30 11:26:57,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26014315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:26:57,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:26:57,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:26:57,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828712654] [2023-08-30 11:26:57,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:26:57,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:26:57,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:26:57,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:26:57,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:26:57,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 611 [2023-08-30 11:26:57,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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 11:26:57,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:26:57,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 611 [2023-08-30 11:26:57,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:26:57,751 INFO L130 PetriNetUnfolder]: 1327/1925 cut-off events. [2023-08-30 11:26:57,751 INFO L131 PetriNetUnfolder]: For 76/76 co-relation queries the response was YES. [2023-08-30 11:26:57,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4019 conditions, 1925 events. 1327/1925 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7791 event pairs, 986 based on Foata normal form. 0/737 useless extension candidates. Maximal degree in co-relation 1740. Up to 967 conditions per place. [2023-08-30 11:26:57,765 INFO L137 encePairwiseOnDemand]: 591/611 looper letters, 61 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2023-08-30 11:26:57,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 67 transitions, 298 flow [2023-08-30 11:26:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:26:57,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:26:57,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 809 transitions. [2023-08-30 11:26:57,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4413529732678669 [2023-08-30 11:26:57,785 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 809 transitions. [2023-08-30 11:26:57,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 809 transitions. [2023-08-30 11:26:57,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:26:57,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 809 transitions. [2023-08-30 11:26:57,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 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 11:26:57,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:26:57,806 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:26:57,808 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 105 flow. Second operand 3 states and 809 transitions. [2023-08-30 11:26:57,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 67 transitions, 298 flow [2023-08-30 11:26:57,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 67 transitions, 280 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:26:57,816 INFO L231 Difference]: Finished difference. Result has 40 places, 42 transitions, 136 flow [2023-08-30 11:26:57,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=40, PETRI_TRANSITIONS=42} [2023-08-30 11:26:57,823 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -9 predicate places. [2023-08-30 11:26:57,824 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 42 transitions, 136 flow [2023-08-30 11:26:57,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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 11:26:57,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:26:57,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:26:57,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:26:57,826 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:26:57,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:26:57,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1447228, now seen corresponding path program 1 times [2023-08-30 11:26:57,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:26:57,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311183482] [2023-08-30 11:26:57,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:26:57,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:26:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:26:57,915 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 11:26:57,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:26:57,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311183482] [2023-08-30 11:26:57,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311183482] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:26:57,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:26:57,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:26:57,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763465801] [2023-08-30 11:26:57,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:26:57,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:26:57,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:26:57,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:26:57,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:26:57,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 611 [2023-08-30 11:26:57,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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 11:26:57,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:26:57,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 611 [2023-08-30 11:26:57,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:26:58,305 INFO L130 PetriNetUnfolder]: 1327/1922 cut-off events. [2023-08-30 11:26:58,305 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:26:58,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3978 conditions, 1922 events. 1327/1922 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 7864 event pairs, 986 based on Foata normal form. 0/743 useless extension candidates. Maximal degree in co-relation 1969. Up to 1922 conditions per place. [2023-08-30 11:26:58,314 INFO L137 encePairwiseOnDemand]: 607/611 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 11:26:58,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 202 flow [2023-08-30 11:26:58,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:26:58,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:26:58,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 757 transitions. [2023-08-30 11:26:58,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41298417894162576 [2023-08-30 11:26:58,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 757 transitions. [2023-08-30 11:26:58,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 757 transitions. [2023-08-30 11:26:58,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:26:58,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 757 transitions. [2023-08-30 11:26:58,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 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 11:26:58,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:26:58,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:26:58,324 INFO L175 Difference]: Start difference. First operand has 40 places, 42 transitions, 136 flow. Second operand 3 states and 757 transitions. [2023-08-30 11:26:58,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 39 transitions, 202 flow [2023-08-30 11:26:58,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 39 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:26:58,326 INFO L231 Difference]: Finished difference. Result has 37 places, 39 transitions, 114 flow [2023-08-30 11:26:58,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=37, PETRI_TRANSITIONS=39} [2023-08-30 11:26:58,327 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -12 predicate places. [2023-08-30 11:26:58,327 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 39 transitions, 114 flow [2023-08-30 11:26:58,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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 11:26:58,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:26:58,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:26:58,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:26:58,328 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:26:58,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:26:58,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1447253, now seen corresponding path program 1 times [2023-08-30 11:26:58,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:26:58,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959283245] [2023-08-30 11:26:58,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:26:58,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:26:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:26:58,422 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 11:26:58,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:26:58,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959283245] [2023-08-30 11:26:58,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959283245] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:26:58,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945184939] [2023-08-30 11:26:58,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:26:58,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:26:58,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:26:58,427 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 11:26:58,435 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 11:26:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:26:58,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:26:58,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:26:58,540 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 11:26:58,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:26:58,555 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 11:26:58,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945184939] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:26:58,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:26:58,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:26:58,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347129340] [2023-08-30 11:26:58,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:26:58,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:26:58,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:26:58,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:26:58,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:26:58,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 611 [2023-08-30 11:26:58,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 39 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 241.14285714285714) internal successors, (1688), 7 states have internal predecessors, (1688), 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 11:26:58,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:26:58,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 611 [2023-08-30 11:26:58,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:26:59,698 INFO L130 PetriNetUnfolder]: 3316/4799 cut-off events. [2023-08-30 11:26:59,700 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:26:59,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9907 conditions, 4799 events. 3316/4799 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 23092 event pairs, 2465 based on Foata normal form. 0/1846 useless extension candidates. Maximal degree in co-relation 9899. Up to 965 conditions per place. [2023-08-30 11:26:59,726 INFO L137 encePairwiseOnDemand]: 602/611 looper letters, 133 selfloop transitions, 21 changer transitions 0/154 dead transitions. [2023-08-30 11:26:59,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 154 transitions, 706 flow [2023-08-30 11:26:59,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:26:59,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:26:59,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1603 transitions. [2023-08-30 11:26:59,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43726132024004366 [2023-08-30 11:26:59,736 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1603 transitions. [2023-08-30 11:26:59,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1603 transitions. [2023-08-30 11:26:59,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:26:59,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1603 transitions. [2023-08-30 11:26:59,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.1666666666667) internal successors, (1603), 6 states have internal predecessors, (1603), 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 11:26:59,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 611.0) internal successors, (4277), 7 states have internal predecessors, (4277), 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 11:26:59,751 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 611.0) internal successors, (4277), 7 states have internal predecessors, (4277), 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 11:26:59,751 INFO L175 Difference]: Start difference. First operand has 37 places, 39 transitions, 114 flow. Second operand 6 states and 1603 transitions. [2023-08-30 11:26:59,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 154 transitions, 706 flow [2023-08-30 11:26:59,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 154 transitions, 705 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:26:59,757 INFO L231 Difference]: Finished difference. Result has 44 places, 54 transitions, 263 flow [2023-08-30 11:26:59,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=44, PETRI_TRANSITIONS=54} [2023-08-30 11:26:59,758 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2023-08-30 11:26:59,758 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 54 transitions, 263 flow [2023-08-30 11:26:59,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 241.14285714285714) internal successors, (1688), 7 states have internal predecessors, (1688), 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 11:26:59,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:26:59,760 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:26:59,772 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 11:26:59,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:26:59,973 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:26:59,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:26:59,973 INFO L85 PathProgramCache]: Analyzing trace with hash 167736979, now seen corresponding path program 2 times [2023-08-30 11:26:59,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:26:59,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439447052] [2023-08-30 11:26:59,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:26:59,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:26:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:00,064 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 11:27:00,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:00,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439447052] [2023-08-30 11:27:00,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439447052] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:27:00,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737269311] [2023-08-30 11:27:00,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:27:00,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:27:00,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:27:00,067 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 11:27:00,083 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 11:27:00,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:27:00,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:27:00,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:27:00,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:27:00,179 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 11:27:00,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:27:00,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737269311] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:00,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:27:00,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:27:00,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264980230] [2023-08-30 11:27:00,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:00,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:27:00,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:00,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:27:00,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:27:00,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 611 [2023-08-30 11:27:00,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 54 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 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 11:27:00,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:00,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 611 [2023-08-30 11:27:00,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:01,018 INFO L130 PetriNetUnfolder]: 3316/4796 cut-off events. [2023-08-30 11:27:01,019 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 11:27:01,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9940 conditions, 4796 events. 3316/4796 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 23089 event pairs, 2465 based on Foata normal form. 3/1855 useless extension candidates. Maximal degree in co-relation 9928. Up to 4796 conditions per place. [2023-08-30 11:27:01,048 INFO L137 encePairwiseOnDemand]: 607/611 looper letters, 50 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-08-30 11:27:01,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 335 flow [2023-08-30 11:27:01,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:27:01,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:27:01,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 763 transitions. [2023-08-30 11:27:01,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41625750136388434 [2023-08-30 11:27:01,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 763 transitions. [2023-08-30 11:27:01,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 763 transitions. [2023-08-30 11:27:01,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:01,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 763 transitions. [2023-08-30 11:27:01,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 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 11:27:01,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:01,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:01,059 INFO L175 Difference]: Start difference. First operand has 44 places, 54 transitions, 263 flow. Second operand 3 states and 763 transitions. [2023-08-30 11:27:01,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 335 flow [2023-08-30 11:27:01,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 51 transitions, 263 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-30 11:27:01,062 INFO L231 Difference]: Finished difference. Result has 38 places, 51 transitions, 163 flow [2023-08-30 11:27:01,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=38, PETRI_TRANSITIONS=51} [2023-08-30 11:27:01,063 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -11 predicate places. [2023-08-30 11:27:01,063 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 51 transitions, 163 flow [2023-08-30 11:27:01,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 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 11:27:01,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:01,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:27:01,071 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 11:27:01,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 11:27:01,269 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:27:01,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:01,269 INFO L85 PathProgramCache]: Analyzing trace with hash 179322811, now seen corresponding path program 1 times [2023-08-30 11:27:01,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:01,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343106705] [2023-08-30 11:27:01,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:01,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:01,428 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 11:27:01,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:01,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343106705] [2023-08-30 11:27:01,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343106705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:01,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:27:01,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:27:01,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875939797] [2023-08-30 11:27:01,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:01,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:27:01,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:01,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:27:01,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:27:01,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 611 [2023-08-30 11:27:01,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 51 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:01,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:01,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 611 [2023-08-30 11:27:01,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:02,829 INFO L130 PetriNetUnfolder]: 5576/8036 cut-off events. [2023-08-30 11:27:02,829 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-30 11:27:02,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16529 conditions, 8036 events. 5576/8036 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 44027 event pairs, 1945 based on Foata normal form. 0/3156 useless extension candidates. Maximal degree in co-relation 16520. Up to 5091 conditions per place. [2023-08-30 11:27:02,864 INFO L137 encePairwiseOnDemand]: 606/611 looper letters, 67 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-08-30 11:27:02,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 70 transitions, 345 flow [2023-08-30 11:27:02,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:27:02,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:27:02,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 781 transitions. [2023-08-30 11:27:02,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4260774686306601 [2023-08-30 11:27:02,868 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 781 transitions. [2023-08-30 11:27:02,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 781 transitions. [2023-08-30 11:27:02,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:02,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 781 transitions. [2023-08-30 11:27:02,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 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 11:27:02,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:02,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:02,875 INFO L175 Difference]: Start difference. First operand has 38 places, 51 transitions, 163 flow. Second operand 3 states and 781 transitions. [2023-08-30 11:27:02,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 70 transitions, 345 flow [2023-08-30 11:27:02,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 70 transitions, 344 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:27:02,877 INFO L231 Difference]: Finished difference. Result has 40 places, 53 transitions, 183 flow [2023-08-30 11:27:02,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=40, PETRI_TRANSITIONS=53} [2023-08-30 11:27:02,878 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -9 predicate places. [2023-08-30 11:27:02,878 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 53 transitions, 183 flow [2023-08-30 11:27:02,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:02,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:02,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:27:02,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:27:02,879 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:27:02,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:02,880 INFO L85 PathProgramCache]: Analyzing trace with hash 179322863, now seen corresponding path program 1 times [2023-08-30 11:27:02,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:02,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226485825] [2023-08-30 11:27:02,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:02,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:02,922 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 11:27:02,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:02,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226485825] [2023-08-30 11:27:02,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226485825] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:02,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:27:02,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:27:02,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347554342] [2023-08-30 11:27:02,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:02,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:27:02,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:02,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:27:02,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:27:02,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 611 [2023-08-30 11:27:02,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 53 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:02,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:02,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 611 [2023-08-30 11:27:02,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:04,730 INFO L130 PetriNetUnfolder]: 8436/12116 cut-off events. [2023-08-30 11:27:04,731 INFO L131 PetriNetUnfolder]: For 1575/1575 co-relation queries the response was YES. [2023-08-30 11:27:04,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27801 conditions, 12116 events. 8436/12116 cut-off events. For 1575/1575 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 70901 event pairs, 2245 based on Foata normal form. 0/7026 useless extension candidates. Maximal degree in co-relation 27790. Up to 7731 conditions per place. [2023-08-30 11:27:04,778 INFO L137 encePairwiseOnDemand]: 605/611 looper letters, 72 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-08-30 11:27:04,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 75 transitions, 394 flow [2023-08-30 11:27:04,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:27:04,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:27:04,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 783 transitions. [2023-08-30 11:27:04,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42716857610474634 [2023-08-30 11:27:04,781 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 783 transitions. [2023-08-30 11:27:04,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 783 transitions. [2023-08-30 11:27:04,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:04,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 783 transitions. [2023-08-30 11:27:04,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 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 11:27:04,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:04,787 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:04,787 INFO L175 Difference]: Start difference. First operand has 40 places, 53 transitions, 183 flow. Second operand 3 states and 783 transitions. [2023-08-30 11:27:04,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 75 transitions, 394 flow [2023-08-30 11:27:04,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 75 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:27:04,791 INFO L231 Difference]: Finished difference. Result has 43 places, 55 transitions, 208 flow [2023-08-30 11:27:04,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=43, PETRI_TRANSITIONS=55} [2023-08-30 11:27:04,792 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2023-08-30 11:27:04,792 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 55 transitions, 208 flow [2023-08-30 11:27:04,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:27:04,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:04,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:27:04,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:27:04,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:27:04,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:04,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1264043868, now seen corresponding path program 1 times [2023-08-30 11:27:04,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:04,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880946892] [2023-08-30 11:27:04,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:04,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:27:04,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:04,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880946892] [2023-08-30 11:27:04,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880946892] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:04,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:27:04,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:27:04,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926184156] [2023-08-30 11:27:04,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:04,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:27:04,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:04,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:27:04,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:27:04,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 611 [2023-08-30 11:27:04,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 55 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 236.75) internal successors, (947), 4 states have internal predecessors, (947), 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 11:27:04,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:04,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 611 [2023-08-30 11:27:04,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:06,398 INFO L130 PetriNetUnfolder]: 7880/11326 cut-off events. [2023-08-30 11:27:06,398 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-08-30 11:27:06,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28013 conditions, 11326 events. 7880/11326 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 62019 event pairs, 6107 based on Foata normal form. 0/7646 useless extension candidates. Maximal degree in co-relation 27999. Up to 9678 conditions per place. [2023-08-30 11:27:06,456 INFO L137 encePairwiseOnDemand]: 602/611 looper letters, 68 selfloop transitions, 14 changer transitions 0/82 dead transitions. [2023-08-30 11:27:06,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 82 transitions, 462 flow [2023-08-30 11:27:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:27:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:27:06,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1236 transitions. [2023-08-30 11:27:06,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.404582651391162 [2023-08-30 11:27:06,461 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1236 transitions. [2023-08-30 11:27:06,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1236 transitions. [2023-08-30 11:27:06,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:06,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1236 transitions. [2023-08-30 11:27:06,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 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 11:27:06,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 611.0) internal successors, (3666), 6 states have internal predecessors, (3666), 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 11:27:06,470 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 611.0) internal successors, (3666), 6 states have internal predecessors, (3666), 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 11:27:06,470 INFO L175 Difference]: Start difference. First operand has 43 places, 55 transitions, 208 flow. Second operand 5 states and 1236 transitions. [2023-08-30 11:27:06,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 82 transitions, 462 flow [2023-08-30 11:27:06,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 82 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:27:06,479 INFO L231 Difference]: Finished difference. Result has 47 places, 56 transitions, 254 flow [2023-08-30 11:27:06,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=47, PETRI_TRANSITIONS=56} [2023-08-30 11:27:06,479 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2023-08-30 11:27:06,480 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 56 transitions, 254 flow [2023-08-30 11:27:06,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 236.75) internal successors, (947), 4 states have internal predecessors, (947), 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 11:27:06,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:06,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:27:06,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:27:06,481 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:27:06,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:06,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1264043884, now seen corresponding path program 1 times [2023-08-30 11:27:06,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:06,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859756532] [2023-08-30 11:27:06,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:06,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:27:06,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:06,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859756532] [2023-08-30 11:27:06,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859756532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:06,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:27:06,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:27:06,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950354607] [2023-08-30 11:27:06,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:06,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:27:06,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:06,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:27:06,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:27:06,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 611 [2023-08-30 11:27:06,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 56 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 236.75) internal successors, (947), 4 states have internal predecessors, (947), 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 11:27:06,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:06,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 611 [2023-08-30 11:27:06,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:09,024 INFO L130 PetriNetUnfolder]: 13335/19191 cut-off events. [2023-08-30 11:27:09,024 INFO L131 PetriNetUnfolder]: For 8217/8217 co-relation queries the response was YES. [2023-08-30 11:27:09,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48457 conditions, 19191 events. 13335/19191 cut-off events. For 8217/8217 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 112922 event pairs, 10128 based on Foata normal form. 0/14975 useless extension candidates. Maximal degree in co-relation 48441. Up to 11315 conditions per place. [2023-08-30 11:27:09,143 INFO L137 encePairwiseOnDemand]: 605/611 looper letters, 81 selfloop transitions, 8 changer transitions 0/89 dead transitions. [2023-08-30 11:27:09,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 89 transitions, 553 flow [2023-08-30 11:27:09,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:27:09,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:27:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 999 transitions. [2023-08-30 11:27:09,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40875613747954176 [2023-08-30 11:27:09,147 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 999 transitions. [2023-08-30 11:27:09,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 999 transitions. [2023-08-30 11:27:09,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:09,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 999 transitions. [2023-08-30 11:27:09,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 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 11:27:09,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 611.0) internal successors, (3055), 5 states have internal predecessors, (3055), 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 11:27:09,154 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 611.0) internal successors, (3055), 5 states have internal predecessors, (3055), 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 11:27:09,154 INFO L175 Difference]: Start difference. First operand has 47 places, 56 transitions, 254 flow. Second operand 4 states and 999 transitions. [2023-08-30 11:27:09,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 89 transitions, 553 flow [2023-08-30 11:27:09,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 89 transitions, 546 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 11:27:09,159 INFO L231 Difference]: Finished difference. Result has 50 places, 56 transitions, 277 flow [2023-08-30 11:27:09,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=50, PETRI_TRANSITIONS=56} [2023-08-30 11:27:09,159 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2023-08-30 11:27:09,160 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 277 flow [2023-08-30 11:27:09,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 236.75) internal successors, (947), 4 states have internal predecessors, (947), 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 11:27:09,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:09,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:27:09,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 11:27:09,161 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:27:09,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:09,161 INFO L85 PathProgramCache]: Analyzing trace with hash 530568069, now seen corresponding path program 1 times [2023-08-30 11:27:09,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:09,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505051624] [2023-08-30 11:27:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:09,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:09,203 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 11:27:09,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:09,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505051624] [2023-08-30 11:27:09,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505051624] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:09,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:27:09,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:27:09,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342145668] [2023-08-30 11:27:09,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:09,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:27:09,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:09,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:27:09,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:27:09,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 611 [2023-08-30 11:27:09,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 56 transitions, 277 flow. Second operand has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 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 11:27:09,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:09,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 611 [2023-08-30 11:27:09,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:12,189 INFO L130 PetriNetUnfolder]: 15859/22545 cut-off events. [2023-08-30 11:27:12,189 INFO L131 PetriNetUnfolder]: For 10855/10855 co-relation queries the response was YES. [2023-08-30 11:27:12,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58847 conditions, 22545 events. 15859/22545 cut-off events. For 10855/10855 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 137004 event pairs, 6874 based on Foata normal form. 0/19647 useless extension candidates. Maximal degree in co-relation 58829. Up to 12725 conditions per place. [2023-08-30 11:27:12,322 INFO L137 encePairwiseOnDemand]: 607/611 looper letters, 74 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2023-08-30 11:27:12,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 78 transitions, 513 flow [2023-08-30 11:27:12,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:27:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:27:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 787 transitions. [2023-08-30 11:27:12,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42935079105291873 [2023-08-30 11:27:12,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 787 transitions. [2023-08-30 11:27:12,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 787 transitions. [2023-08-30 11:27:12,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:12,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 787 transitions. [2023-08-30 11:27:12,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 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 11:27:12,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:12,331 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:12,331 INFO L175 Difference]: Start difference. First operand has 50 places, 56 transitions, 277 flow. Second operand 3 states and 787 transitions. [2023-08-30 11:27:12,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 78 transitions, 513 flow [2023-08-30 11:27:12,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 78 transitions, 500 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 11:27:12,338 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 294 flow [2023-08-30 11:27:12,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=52, PETRI_TRANSITIONS=58} [2023-08-30 11:27:12,339 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2023-08-30 11:27:12,339 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 294 flow [2023-08-30 11:27:12,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 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 11:27:12,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:12,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:27:12,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 11:27:12,340 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:27:12,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:12,341 INFO L85 PathProgramCache]: Analyzing trace with hash 514801116, now seen corresponding path program 1 times [2023-08-30 11:27:12,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:12,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45761160] [2023-08-30 11:27:12,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:12,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:12,464 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 11:27:12,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:12,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45761160] [2023-08-30 11:27:12,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45761160] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:27:12,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788963845] [2023-08-30 11:27:12,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:12,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:27:12,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:27:12,467 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 11:27:12,470 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 11:27:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:12,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:27:12,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:27:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:27:12,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:27:12,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788963845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:12,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:27:12,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-30 11:27:12,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101443994] [2023-08-30 11:27:12,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:12,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:27:12,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:12,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:27:12,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:27:12,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 611 [2023-08-30 11:27:12,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 58 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 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 11:27:12,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:12,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 611 [2023-08-30 11:27:12,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:14,708 INFO L130 PetriNetUnfolder]: 11391/16421 cut-off events. [2023-08-30 11:27:14,709 INFO L131 PetriNetUnfolder]: For 21662/21662 co-relation queries the response was YES. [2023-08-30 11:27:14,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45429 conditions, 16421 events. 11391/16421 cut-off events. For 21662/21662 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 95112 event pairs, 8100 based on Foata normal form. 1992/16773 useless extension candidates. Maximal degree in co-relation 45409. Up to 16421 conditions per place. [2023-08-30 11:27:14,769 INFO L137 encePairwiseOnDemand]: 608/611 looper letters, 54 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-08-30 11:27:14,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 384 flow [2023-08-30 11:27:14,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:27:14,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:27:14,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 772 transitions. [2023-08-30 11:27:14,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42116748499727225 [2023-08-30 11:27:14,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 772 transitions. [2023-08-30 11:27:14,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 772 transitions. [2023-08-30 11:27:14,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:14,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 772 transitions. [2023-08-30 11:27:14,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 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 11:27:14,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:14,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:14,780 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 294 flow. Second operand 3 states and 772 transitions. [2023-08-30 11:27:14,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 384 flow [2023-08-30 11:27:14,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 369 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 11:27:14,785 INFO L231 Difference]: Finished difference. Result has 49 places, 55 transitions, 261 flow [2023-08-30 11:27:14,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=49, PETRI_TRANSITIONS=55} [2023-08-30 11:27:14,788 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2023-08-30 11:27:14,788 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 55 transitions, 261 flow [2023-08-30 11:27:14,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 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 11:27:14,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:14,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:27:14,797 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 11:27:14,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:27:14,994 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:27:14,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:14,995 INFO L85 PathProgramCache]: Analyzing trace with hash -252644819, now seen corresponding path program 1 times [2023-08-30 11:27:14,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:14,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629635554] [2023-08-30 11:27:14,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:14,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:15,128 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 11:27:15,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:15,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629635554] [2023-08-30 11:27:15,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629635554] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:27:15,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416638744] [2023-08-30 11:27:15,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:15,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:27:15,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:27:15,132 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 11:27:15,134 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 11:27:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:15,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:27:15,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:27:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:27:15,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:27:15,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416638744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:15,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:27:15,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-30 11:27:15,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238006579] [2023-08-30 11:27:15,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:15,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:27:15,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:15,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:27:15,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:27:15,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 611 [2023-08-30 11:27:15,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 55 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 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 11:27:15,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:15,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 611 [2023-08-30 11:27:15,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:16,991 INFO L130 PetriNetUnfolder]: 9241/13351 cut-off events. [2023-08-30 11:27:16,991 INFO L131 PetriNetUnfolder]: For 9405/9405 co-relation queries the response was YES. [2023-08-30 11:27:17,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35390 conditions, 13351 events. 9241/13351 cut-off events. For 9405/9405 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 75227 event pairs, 6370 based on Foata normal form. 850/12681 useless extension candidates. Maximal degree in co-relation 35371. Up to 13351 conditions per place. [2023-08-30 11:27:17,049 INFO L137 encePairwiseOnDemand]: 608/611 looper letters, 52 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-08-30 11:27:17,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 357 flow [2023-08-30 11:27:17,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:27:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:27:17,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 770 transitions. [2023-08-30 11:27:17,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42007637752318605 [2023-08-30 11:27:17,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 770 transitions. [2023-08-30 11:27:17,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 770 transitions. [2023-08-30 11:27:17,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:17,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 770 transitions. [2023-08-30 11:27:17,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 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 11:27:17,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:17,057 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:17,058 INFO L175 Difference]: Start difference. First operand has 49 places, 55 transitions, 261 flow. Second operand 3 states and 770 transitions. [2023-08-30 11:27:17,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 357 flow [2023-08-30 11:27:17,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 53 transitions, 349 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:27:17,061 INFO L231 Difference]: Finished difference. Result has 47 places, 53 transitions, 245 flow [2023-08-30 11:27:17,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=245, PETRI_PLACES=47, PETRI_TRANSITIONS=53} [2023-08-30 11:27:17,062 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2023-08-30 11:27:17,062 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 53 transitions, 245 flow [2023-08-30 11:27:17,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 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 11:27:17,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:17,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:27:17,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 11:27:17,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:27:17,268 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:27:17,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:17,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1216018687, now seen corresponding path program 1 times [2023-08-30 11:27:17,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:17,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769877419] [2023-08-30 11:27:17,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:17,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:17,403 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 11:27:17,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:17,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769877419] [2023-08-30 11:27:17,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769877419] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:27:17,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532084755] [2023-08-30 11:27:17,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:17,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:27:17,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:27:17,406 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 11:27:17,408 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 11:27:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:17,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:27:17,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:27:17,586 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 11:27:17,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:27:17,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532084755] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:17,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:27:17,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-30 11:27:17,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586591592] [2023-08-30 11:27:17,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:17,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:27:17,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:17,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:27:17,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:27:17,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 611 [2023-08-30 11:27:17,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 53 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 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 11:27:17,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:17,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 611 [2023-08-30 11:27:17,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:18,453 INFO L130 PetriNetUnfolder]: 3986/5776 cut-off events. [2023-08-30 11:27:18,453 INFO L131 PetriNetUnfolder]: For 2800/2800 co-relation queries the response was YES. [2023-08-30 11:27:18,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15399 conditions, 5776 events. 3986/5776 cut-off events. For 2800/2800 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 29678 event pairs, 885 based on Foata normal form. 90/5176 useless extension candidates. Maximal degree in co-relation 15380. Up to 5191 conditions per place. [2023-08-30 11:27:18,472 INFO L137 encePairwiseOnDemand]: 607/611 looper letters, 61 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-30 11:27:18,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 399 flow [2023-08-30 11:27:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:27:18,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:27:18,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 767 transitions. [2023-08-30 11:27:18,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41843971631205673 [2023-08-30 11:27:18,475 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 767 transitions. [2023-08-30 11:27:18,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 767 transitions. [2023-08-30 11:27:18,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:18,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 767 transitions. [2023-08-30 11:27:18,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 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 11:27:18,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:18,480 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:18,480 INFO L175 Difference]: Start difference. First operand has 47 places, 53 transitions, 245 flow. Second operand 3 states and 767 transitions. [2023-08-30 11:27:18,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 399 flow [2023-08-30 11:27:18,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:27:18,482 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 255 flow [2023-08-30 11:27:18,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2023-08-30 11:27:18,483 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2023-08-30 11:27:18,483 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 255 flow [2023-08-30 11:27:18,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 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 11:27:18,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:18,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:27:18,493 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 11:27:18,693 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,SelfDestructingSolverStorable11 [2023-08-30 11:27:18,693 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:27:18,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:18,694 INFO L85 PathProgramCache]: Analyzing trace with hash -732257678, now seen corresponding path program 1 times [2023-08-30 11:27:18,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:18,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185877479] [2023-08-30 11:27:18,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:18,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:18,904 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 11:27:18,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:18,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185877479] [2023-08-30 11:27:18,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185877479] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:18,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:27:18,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:27:18,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639080839] [2023-08-30 11:27:18,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:18,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:27:18,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:18,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:27:18,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:27:18,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 611 [2023-08-30 11:27:18,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 239.8) internal successors, (1199), 5 states have internal predecessors, (1199), 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 11:27:18,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:18,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 611 [2023-08-30 11:27:18,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:19,603 INFO L130 PetriNetUnfolder]: 3486/5096 cut-off events. [2023-08-30 11:27:19,604 INFO L131 PetriNetUnfolder]: For 3010/3010 co-relation queries the response was YES. [2023-08-30 11:27:19,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13511 conditions, 5096 events. 3486/5096 cut-off events. For 3010/3010 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 25368 event pairs, 1475 based on Foata normal form. 110/4546 useless extension candidates. Maximal degree in co-relation 13490. Up to 4511 conditions per place. [2023-08-30 11:27:19,624 INFO L137 encePairwiseOnDemand]: 608/611 looper letters, 58 selfloop transitions, 2 changer transitions 1/61 dead transitions. [2023-08-30 11:27:19,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 388 flow [2023-08-30 11:27:19,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:27:19,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:27:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 752 transitions. [2023-08-30 11:27:19,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2023-08-30 11:27:19,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 752 transitions. [2023-08-30 11:27:19,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 752 transitions. [2023-08-30 11:27:19,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:19,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 752 transitions. [2023-08-30 11:27:19,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 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 11:27:19,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:19,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:19,631 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 255 flow. Second operand 3 states and 752 transitions. [2023-08-30 11:27:19,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 388 flow [2023-08-30 11:27:19,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 61 transitions, 384 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:27:19,635 INFO L231 Difference]: Finished difference. Result has 49 places, 52 transitions, 246 flow [2023-08-30 11:27:19,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=49, PETRI_TRANSITIONS=52} [2023-08-30 11:27:19,635 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2023-08-30 11:27:19,636 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 246 flow [2023-08-30 11:27:19,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 239.8) internal successors, (1199), 5 states have internal predecessors, (1199), 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 11:27:19,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:19,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:27:19,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 11:27:19,637 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:27:19,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:19,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1225185113, now seen corresponding path program 1 times [2023-08-30 11:27:19,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:19,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269767866] [2023-08-30 11:27:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:19,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:19,711 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 11:27:19,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:19,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269767866] [2023-08-30 11:27:19,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269767866] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:19,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:27:19,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:27:19,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115464426] [2023-08-30 11:27:19,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:19,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:27:19,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:19,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:27:19,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:27:19,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 611 [2023-08-30 11:27:19,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 237.5) internal successors, (950), 4 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 11:27:19,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:19,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 611 [2023-08-30 11:27:19,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:20,803 INFO L130 PetriNetUnfolder]: 4946/7331 cut-off events. [2023-08-30 11:27:20,803 INFO L131 PetriNetUnfolder]: For 3979/3979 co-relation queries the response was YES. [2023-08-30 11:27:20,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19271 conditions, 7331 events. 4946/7331 cut-off events. For 3979/3979 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 39858 event pairs, 3470 based on Foata normal form. 280/6951 useless extension candidates. Maximal degree in co-relation 19250. Up to 5095 conditions per place. [2023-08-30 11:27:20,824 INFO L137 encePairwiseOnDemand]: 604/611 looper letters, 49 selfloop transitions, 2 changer transitions 37/88 dead transitions. [2023-08-30 11:27:20,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 88 transitions, 571 flow [2023-08-30 11:27:20,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:27:20,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:27:20,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 993 transitions. [2023-08-30 11:27:20,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4063011456628478 [2023-08-30 11:27:20,826 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 993 transitions. [2023-08-30 11:27:20,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 993 transitions. [2023-08-30 11:27:20,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:20,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 993 transitions. [2023-08-30 11:27:20,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 248.25) internal successors, (993), 4 states have internal predecessors, (993), 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 11:27:20,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 611.0) internal successors, (3055), 5 states have internal predecessors, (3055), 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 11:27:20,831 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 611.0) internal successors, (3055), 5 states have internal predecessors, (3055), 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 11:27:20,831 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 246 flow. Second operand 4 states and 993 transitions. [2023-08-30 11:27:20,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 88 transitions, 571 flow [2023-08-30 11:27:20,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 88 transitions, 565 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:27:20,834 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 251 flow [2023-08-30 11:27:20,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2023-08-30 11:27:20,834 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2023-08-30 11:27:20,834 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 251 flow [2023-08-30 11:27:20,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 237.5) internal successors, (950), 4 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 11:27:20,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:20,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:27:20,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 11:27:20,835 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:27:20,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:20,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1894000105, now seen corresponding path program 1 times [2023-08-30 11:27:20,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:20,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611080535] [2023-08-30 11:27:20,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:20,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:20,940 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 11:27:20,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:20,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611080535] [2023-08-30 11:27:20,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611080535] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:27:20,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322621856] [2023-08-30 11:27:20,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:20,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:27:20,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:27:20,949 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 11:27:20,951 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 11:27:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:21,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:27:21,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:27:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:27:21,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:27:21,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322621856] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:21,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:27:21,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 11:27:21,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543892180] [2023-08-30 11:27:21,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:21,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:27:21,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:21,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:27:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:27:21,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 611 [2023-08-30 11:27:21,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 251 flow. Second operand has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 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 11:27:21,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:21,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 611 [2023-08-30 11:27:21,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:21,426 INFO L130 PetriNetUnfolder]: 1465/2245 cut-off events. [2023-08-30 11:27:21,426 INFO L131 PetriNetUnfolder]: For 2044/2044 co-relation queries the response was YES. [2023-08-30 11:27:21,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5749 conditions, 2245 events. 1465/2245 cut-off events. For 2044/2044 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10251 event pairs, 975 based on Foata normal form. 630/2875 useless extension candidates. Maximal degree in co-relation 5739. Up to 2245 conditions per place. [2023-08-30 11:27:21,431 INFO L137 encePairwiseOnDemand]: 606/611 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2023-08-30 11:27:21,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 309 flow [2023-08-30 11:27:21,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:27:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:27:21,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 768 transitions. [2023-08-30 11:27:21,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41898527004909986 [2023-08-30 11:27:21,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 768 transitions. [2023-08-30 11:27:21,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 768 transitions. [2023-08-30 11:27:21,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:21,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 768 transitions. [2023-08-30 11:27:21,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 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 11:27:21,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:21,437 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 11:27:21,437 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 251 flow. Second operand 3 states and 768 transitions. [2023-08-30 11:27:21,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 309 flow [2023-08-30 11:27:21,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 284 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 11:27:21,439 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2023-08-30 11:27:21,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2023-08-30 11:27:21,440 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2023-08-30 11:27:21,440 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2023-08-30 11:27:21,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 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 11:27:21,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 41 remaining) [2023-08-30 11:27:21,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2023-08-30 11:27:21,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2023-08-30 11:27:21,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2023-08-30 11:27:21,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2023-08-30 11:27:21,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2023-08-30 11:27:21,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2023-08-30 11:27:21,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2023-08-30 11:27:21,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2023-08-30 11:27:21,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2023-08-30 11:27:21,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2023-08-30 11:27:21,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2023-08-30 11:27:21,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2023-08-30 11:27:21,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2023-08-30 11:27:21,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2023-08-30 11:27:21,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2023-08-30 11:27:21,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2023-08-30 11:27:21,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2023-08-30 11:27:21,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2023-08-30 11:27:21,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2023-08-30 11:27:21,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2023-08-30 11:27:21,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2023-08-30 11:27:21,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 41 remaining) [2023-08-30 11:27:21,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 41 remaining) [2023-08-30 11:27:21,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 41 remaining) [2023-08-30 11:27:21,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2023-08-30 11:27:21,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2023-08-30 11:27:21,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2023-08-30 11:27:21,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2023-08-30 11:27:21,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2023-08-30 11:27:21,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2023-08-30 11:27:21,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2023-08-30 11:27:21,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2023-08-30 11:27:21,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2023-08-30 11:27:21,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2023-08-30 11:27:21,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2023-08-30 11:27:21,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2023-08-30 11:27:21,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2023-08-30 11:27:21,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2023-08-30 11:27:21,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2023-08-30 11:27:21,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2023-08-30 11:27:21,460 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 11:27:21,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 11:27:21,655 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:27:21,659 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 11:27:21,660 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 11:27:21,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:27:21 BasicIcfg [2023-08-30 11:27:21,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 11:27:21,663 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 11:27:21,663 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 11:27:21,663 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 11:27:21,663 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:26:45" (3/4) ... [2023-08-30 11:27:21,665 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 11:27:21,669 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 11:27:21,670 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 11:27:21,670 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 11:27:21,676 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2023-08-30 11:27:21,677 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 11:27:21,677 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 11:27:21,678 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 11:27:21,726 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 11:27:21,726 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 11:27:21,726 INFO L158 Benchmark]: Toolchain (without parser) took 37576.02ms. Allocated memory was 83.9MB in the beginning and 3.3GB in the end (delta: 3.2GB). Free memory was 61.4MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2023-08-30 11:27:21,727 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory is still 36.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:27:21,727 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.56ms. Allocated memory is still 83.9MB. Free memory was 61.2MB in the beginning and 48.0MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 11:27:21,727 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.31ms. Allocated memory is still 83.9MB. Free memory was 48.0MB in the beginning and 45.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 11:27:21,728 INFO L158 Benchmark]: Boogie Preprocessor took 67.97ms. Allocated memory is still 83.9MB. Free memory was 45.0MB in the beginning and 63.9MB in the end (delta: -18.9MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2023-08-30 11:27:21,728 INFO L158 Benchmark]: RCFGBuilder took 903.15ms. Allocated memory is still 83.9MB. Free memory was 63.9MB in the beginning and 33.9MB in the end (delta: 30.0MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2023-08-30 11:27:21,729 INFO L158 Benchmark]: TraceAbstraction took 36157.43ms. Allocated memory was 83.9MB in the beginning and 3.3GB in the end (delta: 3.2GB). Free memory was 33.4MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-08-30 11:27:21,729 INFO L158 Benchmark]: Witness Printer took 63.18ms. Allocated memory is still 3.3GB. Free memory was 2.0GB in the beginning and 2.0GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 11:27:21,731 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory is still 36.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.56ms. Allocated memory is still 83.9MB. Free memory was 61.2MB in the beginning and 48.0MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.31ms. Allocated memory is still 83.9MB. Free memory was 48.0MB in the beginning and 45.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.97ms. Allocated memory is still 83.9MB. Free memory was 45.0MB in the beginning and 63.9MB in the end (delta: -18.9MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. * RCFGBuilder took 903.15ms. Allocated memory is still 83.9MB. Free memory was 63.9MB in the beginning and 33.9MB in the end (delta: 30.0MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. * TraceAbstraction took 36157.43ms. Allocated memory was 83.9MB in the beginning and 3.3GB in the end (delta: 3.2GB). Free memory was 33.4MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 63.18ms. Allocated memory is still 3.3GB. Free memory was 2.0GB in the beginning and 2.0GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.9s, 256 PlacesBefore, 49 PlacesAfterwards, 272 TransitionsBefore, 45 TransitionsAfterwards, 4260 CoEnabledTransitionPairs, 7 FixpointIterations, 176 TrivialSequentialCompositions, 83 ConcurrentSequentialCompositions, 28 TrivialYvCompositions, 11 ConcurrentYvCompositions, 20 ChoiceCompositions, 318 TotalNumberOfCompositions, 4654 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4528, independent: 4518, independent conditional: 0, independent unconditional: 4518, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2001, independent: 1995, independent conditional: 0, independent unconditional: 1995, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4528, independent: 2523, independent conditional: 0, independent unconditional: 2523, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 2001, unknown conditional: 0, unknown unconditional: 2001] , Statistics on independence cache: Total cache size (in pairs): 94, Positive cache size: 92, Positive conditional cache size: 0, Positive unconditional cache size: 92, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 99]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 99]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 121]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 121]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 323 locations, 41 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: 36.0s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 20.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1122 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 739 mSDsluCounter, 192 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 82 mSDsCounter, 136 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1479 IncrementalHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 136 mSolverCounterUnsat, 110 mSDtfsCounter, 1479 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=294occurred in iteration=9, InterpolantAutomatonStates: 52, 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, 1.5s InterpolantComputationTime, 150 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 545 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1284 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 22 InterpolantComputations, 14 PerfectInterpolantSequences, 21/38 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 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 11:27:21,759 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