./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --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 11:29:03,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:29:03,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:29:03,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:29:03,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:29:03,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:29:03,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:29:03,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:29:03,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:29:03,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:29:03,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:29:03,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:29:03,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:29:03,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:29:03,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:29:03,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:29:03,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:29:03,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:29:03,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:29:03,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:29:03,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:29:03,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:29:03,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:29:03,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:29:03,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:29:03,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:29:03,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:29:03,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:29:03,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:29:03,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:29:03,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:29:03,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:29:03,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:29:03,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:29:03,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:29:03,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:29:03,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:29:03,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:29:03,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:29:03,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:29:03,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:29:03,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:29:03,659 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:29:03,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:29:03,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:29:03,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:29:03,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:29:03,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:29:03,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:29:03,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:29:03,663 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:29:03,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:29:03,664 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:29:03,664 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:29:03,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:29:03,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:29:03,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:29:03,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:29:03,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:29:03,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:29:03,665 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:29:03,665 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:29:03,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:29:03,666 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:29:03,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:29:03,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:29:03,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:29:03,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:29:03,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:29:03,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:29:03,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:29:03,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:29:03,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:29:03,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:29:03,668 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:29:03,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:29:03,668 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:29:03,669 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:29:03,669 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:29:03,669 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:29:03,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:29:03,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:29:03,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:29:03,987 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:29:03,989 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:29:03,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2023-08-30 11:29:05,136 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:29:05,391 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:29:05,391 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2023-08-30 11:29:05,398 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52d20d4ca/0ca3723db839437a81dde2c2da0cc839/FLAGc4ccc2734 [2023-08-30 11:29:05,416 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52d20d4ca/0ca3723db839437a81dde2c2da0cc839 [2023-08-30 11:29:05,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:29:05,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:29:05,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:29:05,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:29:05,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:29:05,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:29:05" (1/1) ... [2023-08-30 11:29:05,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@676ac262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:05, skipping insertion in model container [2023-08-30 11:29:05,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:29:05" (1/1) ... [2023-08-30 11:29:05,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:29:05,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:29:05,575 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-ring-nondet.wvr.c[4085,4098] [2023-08-30 11:29:05,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:29:05,588 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:29:05,616 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-ring-nondet.wvr.c[4085,4098] [2023-08-30 11:29:05,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:29:05,638 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:29:05,647 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:29:05,652 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:29:05,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:05 WrapperNode [2023-08-30 11:29:05,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:29:05,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:29:05,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:29:05,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:29:05,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:05" (1/1) ... [2023-08-30 11:29:05,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:05" (1/1) ... [2023-08-30 11:29:05,707 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 359 [2023-08-30 11:29:05,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:29:05,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:29:05,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:29:05,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:29:05,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:05" (1/1) ... [2023-08-30 11:29:05,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:05" (1/1) ... [2023-08-30 11:29:05,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:05" (1/1) ... [2023-08-30 11:29:05,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:05" (1/1) ... [2023-08-30 11:29:05,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:05" (1/1) ... [2023-08-30 11:29:05,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:05" (1/1) ... [2023-08-30 11:29:05,756 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:05" (1/1) ... [2023-08-30 11:29:05,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:05" (1/1) ... [2023-08-30 11:29:05,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:29:05,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:29:05,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:29:05,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:29:05,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:05" (1/1) ... [2023-08-30 11:29:05,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:29:05,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:29:05,811 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 11:29:05,852 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 11:29:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:29:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:29:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:29:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:29:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:29:05,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:29:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:29:05,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:29:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:29:05,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:29:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:29:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:29:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:29:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:29:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:29:05,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:29:05,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:29:05,906 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 11:29:06,045 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:29:06,046 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:29:06,448 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:29:06,779 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:29:06,780 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 11:29:06,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:29:06 BoogieIcfgContainer [2023-08-30 11:29:06,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:29:06,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:29:06,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:29:06,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:29:06,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:29:05" (1/3) ... [2023-08-30 11:29:06,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e776341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:29:06, skipping insertion in model container [2023-08-30 11:29:06,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:05" (2/3) ... [2023-08-30 11:29:06,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e776341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:29:06, skipping insertion in model container [2023-08-30 11:29:06,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:29:06" (3/3) ... [2023-08-30 11:29:06,791 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2023-08-30 11:29:06,798 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:29:06,806 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:29:06,806 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-08-30 11:29:06,806 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:29:06,936 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:29:06,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 306 transitions, 636 flow [2023-08-30 11:29:07,139 INFO L130 PetriNetUnfolder]: 25/303 cut-off events. [2023-08-30 11:29:07,140 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:29:07,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 303 events. 25/303 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 386 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 257. Up to 4 conditions per place. [2023-08-30 11:29:07,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 306 transitions, 636 flow [2023-08-30 11:29:07,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 285 transitions, 585 flow [2023-08-30 11:29:07,161 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:29:07,168 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 271 places, 285 transitions, 585 flow [2023-08-30 11:29:07,170 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 271 places, 285 transitions, 585 flow [2023-08-30 11:29:07,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 285 transitions, 585 flow [2023-08-30 11:29:07,224 INFO L130 PetriNetUnfolder]: 24/285 cut-off events. [2023-08-30 11:29:07,226 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:29:07,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 285 events. 24/285 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 383 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 257. Up to 4 conditions per place. [2023-08-30 11:29:07,232 INFO L119 LiptonReduction]: Number of co-enabled transitions 6140 [2023-08-30 11:29:18,644 INFO L134 LiptonReduction]: Checked pairs total: 20631 [2023-08-30 11:29:18,644 INFO L136 LiptonReduction]: Total number of compositions: 312 [2023-08-30 11:29:18,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:29:18,657 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;@41768531, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:29:18,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-08-30 11:29:18,659 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:29:18,659 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:29:18,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:29:18,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:29:18,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:29:18,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:29:18,663 INFO L85 PathProgramCache]: Analyzing trace with hash 46041, now seen corresponding path program 1 times [2023-08-30 11:29:18,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:29:18,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069960887] [2023-08-30 11:29:18,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:18,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:29:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:18,833 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 11:29:18,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:29:18,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069960887] [2023-08-30 11:29:18,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069960887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:29:18,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:29:18,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:29:18,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120933140] [2023-08-30 11:29:18,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:29:18,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:29:18,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:29:18,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:29:18,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:29:18,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 618 [2023-08-30 11:29:18,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 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 11:29:18,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:29:18,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 618 [2023-08-30 11:29:18,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:29:20,950 INFO L130 PetriNetUnfolder]: 16911/23581 cut-off events. [2023-08-30 11:29:20,950 INFO L131 PetriNetUnfolder]: For 848/848 co-relation queries the response was YES. [2023-08-30 11:29:20,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48007 conditions, 23581 events. 16911/23581 cut-off events. For 848/848 co-relation queries the response was YES. Maximal size of possible extension queue 1276. Compared 135456 event pairs, 14314 based on Foata normal form. 0/9865 useless extension candidates. Maximal degree in co-relation 22588. Up to 11795 conditions per place. [2023-08-30 11:29:21,080 INFO L137 encePairwiseOnDemand]: 598/618 looper letters, 105 selfloop transitions, 6 changer transitions 0/111 dead transitions. [2023-08-30 11:29:21,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 111 transitions, 474 flow [2023-08-30 11:29:21,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:29:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:29:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 865 transitions. [2023-08-30 11:29:21,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4665587918015103 [2023-08-30 11:29:21,097 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 865 transitions. [2023-08-30 11:29:21,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 865 transitions. [2023-08-30 11:29:21,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:29:21,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 865 transitions. [2023-08-30 11:29:21,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 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 11:29:21,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 11:29:21,114 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 11:29:21,115 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 149 flow. Second operand 3 states and 865 transitions. [2023-08-30 11:29:21,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 111 transitions, 474 flow [2023-08-30 11:29:21,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 456 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:29:21,127 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 180 flow [2023-08-30 11:29:21,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2023-08-30 11:29:21,132 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -7 predicate places. [2023-08-30 11:29:21,132 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 180 flow [2023-08-30 11:29:21,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 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 11:29:21,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:29:21,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:29:21,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:29:21,133 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:29:21,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:29:21,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1428610, now seen corresponding path program 1 times [2023-08-30 11:29:21,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:29:21,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715920267] [2023-08-30 11:29:21,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:21,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:29:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:21,237 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 11:29:21,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:29:21,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715920267] [2023-08-30 11:29:21,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715920267] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:29:21,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763056834] [2023-08-30 11:29:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:21,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:29:21,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:29:21,255 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 11:29:21,256 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 11:29:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:21,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:29:21,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:29:21,359 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 11:29:21,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:29:21,370 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 11:29:21,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763056834] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:29:21,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:29:21,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 11:29:21,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088532447] [2023-08-30 11:29:21,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:29:21,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 11:29:21,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:29:21,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 11:29:21,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:29:21,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 618 [2023-08-30 11:29:21,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 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 11:29:21,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:29:21,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 618 [2023-08-30 11:29:21,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:29:25,387 INFO L130 PetriNetUnfolder]: 42285/58951 cut-off events. [2023-08-30 11:29:25,387 INFO L131 PetriNetUnfolder]: For 450/450 co-relation queries the response was YES. [2023-08-30 11:29:25,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119434 conditions, 58951 events. 42285/58951 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 2808. Compared 379462 event pairs, 35785 based on Foata normal form. 0/24676 useless extension candidates. Maximal degree in co-relation 95463. Up to 11805 conditions per place. [2023-08-30 11:29:25,706 INFO L137 encePairwiseOnDemand]: 606/618 looper letters, 243 selfloop transitions, 33 changer transitions 0/276 dead transitions. [2023-08-30 11:29:25,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 276 transitions, 1240 flow [2023-08-30 11:29:25,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:29:25,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:29:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1749 transitions. [2023-08-30 11:29:25,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716828478964401 [2023-08-30 11:29:25,710 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1749 transitions. [2023-08-30 11:29:25,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1749 transitions. [2023-08-30 11:29:25,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:29:25,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1749 transitions. [2023-08-30 11:29:25,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 291.5) internal successors, (1749), 6 states have internal predecessors, (1749), 0 states have call successors, (0), 0 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 11:29:25,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 618.0) internal successors, (4326), 7 states have internal predecessors, (4326), 0 states have call successors, (0), 0 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 11:29:25,719 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 618.0) internal successors, (4326), 7 states have internal predecessors, (4326), 0 states have call successors, (0), 0 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 11:29:25,719 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 180 flow. Second operand 6 states and 1749 transitions. [2023-08-30 11:29:25,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 276 transitions, 1240 flow [2023-08-30 11:29:25,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 276 transitions, 1216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:29:25,725 INFO L231 Difference]: Finished difference. Result has 66 places, 88 transitions, 387 flow [2023-08-30 11:29:25,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=66, PETRI_TRANSITIONS=88} [2023-08-30 11:29:25,726 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2023-08-30 11:29:25,726 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 88 transitions, 387 flow [2023-08-30 11:29:25,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 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 11:29:25,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:29:25,728 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 11:29:25,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 11:29:25,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:29:25,933 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:29:25,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:29:25,934 INFO L85 PathProgramCache]: Analyzing trace with hash 44288250, now seen corresponding path program 1 times [2023-08-30 11:29:25,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:29:25,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008905126] [2023-08-30 11:29:25,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:25,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:29:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:29:25,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:29:25,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008905126] [2023-08-30 11:29:25,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008905126] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:29:26,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:29:26,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:29:26,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687487553] [2023-08-30 11:29:26,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:29:26,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:29:26,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:29:26,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:29:26,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:29:26,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 618 [2023-08-30 11:29:26,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 88 transitions, 387 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 11:29:26,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:29:26,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 618 [2023-08-30 11:29:26,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:29:30,034 INFO L130 PetriNetUnfolder]: 42276/58939 cut-off events. [2023-08-30 11:29:30,035 INFO L131 PetriNetUnfolder]: For 455/455 co-relation queries the response was YES. [2023-08-30 11:29:30,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119437 conditions, 58939 events. 42276/58939 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 2845. Compared 379467 event pairs, 35785 based on Foata normal form. 2/24677 useless extension candidates. Maximal degree in co-relation 71634. Up to 58939 conditions per place. [2023-08-30 11:29:30,338 INFO L137 encePairwiseOnDemand]: 614/618 looper letters, 75 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2023-08-30 11:29:30,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 458 flow [2023-08-30 11:29:30,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:29:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:29:30,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 791 transitions. [2023-08-30 11:29:30,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266450916936354 [2023-08-30 11:29:30,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 791 transitions. [2023-08-30 11:29:30,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 791 transitions. [2023-08-30 11:29:30,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:29:30,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 791 transitions. [2023-08-30 11:29:30,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 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 11:29:30,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 11:29:30,349 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 11:29:30,349 INFO L175 Difference]: Start difference. First operand has 66 places, 88 transitions, 387 flow. Second operand 3 states and 791 transitions. [2023-08-30 11:29:30,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 458 flow [2023-08-30 11:29:30,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 76 transitions, 428 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 11:29:30,352 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 278 flow [2023-08-30 11:29:30,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=64, PETRI_TRANSITIONS=76} [2023-08-30 11:29:30,354 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2023-08-30 11:29:30,354 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 278 flow [2023-08-30 11:29:30,354 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 11:29:30,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:29:30,355 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:29:30,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 11:29:30,355 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:29:30,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:29:30,355 INFO L85 PathProgramCache]: Analyzing trace with hash -388622823, now seen corresponding path program 2 times [2023-08-30 11:29:30,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:29:30,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030098902] [2023-08-30 11:29:30,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:30,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:29:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:30,472 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 11:29:30,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:29:30,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030098902] [2023-08-30 11:29:30,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030098902] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:29:30,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936749384] [2023-08-30 11:29:30,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:29:30,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:29:30,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:29:30,503 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 11:29:30,553 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 11:29:30,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:29:30,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:29:30,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:29:30,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:29:30,644 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 11:29:30,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:29:30,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936749384] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:29:30,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:29:30,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:29:30,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854112598] [2023-08-30 11:29:30,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:29:30,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:29:30,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:29:30,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:29:30,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:29:30,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 618 [2023-08-30 11:29:30,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 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 11:29:30,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:29:30,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 618 [2023-08-30 11:29:30,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:29:34,138 INFO L130 PetriNetUnfolder]: 42276/58938 cut-off events. [2023-08-30 11:29:34,138 INFO L131 PetriNetUnfolder]: For 459/459 co-relation queries the response was YES. [2023-08-30 11:29:34,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119415 conditions, 58938 events. 42276/58938 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 2846. Compared 379540 event pairs, 35785 based on Foata normal form. 1/24677 useless extension candidates. Maximal degree in co-relation 119403. Up to 58933 conditions per place. [2023-08-30 11:29:34,365 INFO L137 encePairwiseOnDemand]: 615/618 looper letters, 69 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2023-08-30 11:29:34,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 418 flow [2023-08-30 11:29:34,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:29:34,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:29:34,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2023-08-30 11:29:34,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298813376483279 [2023-08-30 11:29:34,368 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2023-08-30 11:29:34,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2023-08-30 11:29:34,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:29:34,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2023-08-30 11:29:34,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 0 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 11:29:34,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 11:29:34,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 11:29:34,373 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 278 flow. Second operand 3 states and 797 transitions. [2023-08-30 11:29:34,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 418 flow [2023-08-30 11:29:34,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 417 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:29:34,375 INFO L231 Difference]: Finished difference. Result has 64 places, 75 transitions, 279 flow [2023-08-30 11:29:34,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2023-08-30 11:29:34,376 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2023-08-30 11:29:34,376 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 279 flow [2023-08-30 11:29:34,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 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 11:29:34,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:29:34,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:29:34,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 11:29:34,580 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 11:29:34,580 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:29:34,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:29:34,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1816291730, now seen corresponding path program 1 times [2023-08-30 11:29:34,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:29:34,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552456130] [2023-08-30 11:29:34,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:34,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:29:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:34,856 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 11:29:34,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:29:34,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552456130] [2023-08-30 11:29:34,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552456130] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:29:34,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:29:34,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:29:34,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975965780] [2023-08-30 11:29:34,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:29:34,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:29:34,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:29:34,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:29:34,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:29:34,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 618 [2023-08-30 11:29:34,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 0 states have call successors, (0), 0 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 11:29:34,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:29:34,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 618 [2023-08-30 11:29:34,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:29:38,839 INFO L130 PetriNetUnfolder]: 42936/60075 cut-off events. [2023-08-30 11:29:38,839 INFO L131 PetriNetUnfolder]: For 465/465 co-relation queries the response was YES. [2023-08-30 11:29:38,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121786 conditions, 60075 events. 42936/60075 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 2845. Compared 389527 event pairs, 36400 based on Foata normal form. 450/25983 useless extension candidates. Maximal degree in co-relation 121773. Up to 58937 conditions per place. [2023-08-30 11:29:39,123 INFO L137 encePairwiseOnDemand]: 610/618 looper letters, 107 selfloop transitions, 3 changer transitions 1/111 dead transitions. [2023-08-30 11:29:39,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 111 transitions, 648 flow [2023-08-30 11:29:39,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:29:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:29:39,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1042 transitions. [2023-08-30 11:29:39,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4215210355987055 [2023-08-30 11:29:39,126 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1042 transitions. [2023-08-30 11:29:39,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1042 transitions. [2023-08-30 11:29:39,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:29:39,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1042 transitions. [2023-08-30 11:29:39,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 260.5) internal successors, (1042), 4 states have internal predecessors, (1042), 0 states have call successors, (0), 0 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 11:29:39,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 0 states have call successors, (0), 0 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 11:29:39,133 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 0 states have call successors, (0), 0 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 11:29:39,133 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 279 flow. Second operand 4 states and 1042 transitions. [2023-08-30 11:29:39,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 111 transitions, 648 flow [2023-08-30 11:29:39,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 111 transitions, 636 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:29:39,135 INFO L231 Difference]: Finished difference. Result has 66 places, 75 transitions, 284 flow [2023-08-30 11:29:39,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=66, PETRI_TRANSITIONS=75} [2023-08-30 11:29:39,135 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2023-08-30 11:29:39,136 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 75 transitions, 284 flow [2023-08-30 11:29:39,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 0 states have call successors, (0), 0 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 11:29:39,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:29:39,136 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:29:39,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:29:39,137 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:29:39,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:29:39,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1789992135, now seen corresponding path program 1 times [2023-08-30 11:29:39,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:29:39,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724173388] [2023-08-30 11:29:39,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:39,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:29:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:39,194 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 11:29:39,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:29:39,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724173388] [2023-08-30 11:29:39,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724173388] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:29:39,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903543655] [2023-08-30 11:29:39,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:39,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:29:39,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:29:39,210 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 11:29:39,211 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 11:29:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:39,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:29:39,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:29:39,309 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 11:29:39,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:29:39,358 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 11:29:39,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903543655] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:29:39,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:29:39,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 11:29:39,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098985188] [2023-08-30 11:29:39,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:29:39,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:29:39,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:29:39,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:29:39,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:29:39,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 618 [2023-08-30 11:29:39,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 75 transitions, 284 flow. Second operand has 13 states, 13 states have (on average 245.15384615384616) internal successors, (3187), 13 states have internal predecessors, (3187), 0 states have call successors, (0), 0 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 11:29:39,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:29:39,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 618 [2023-08-30 11:29:39,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:29:48,721 INFO L130 PetriNetUnfolder]: 94458/132159 cut-off events. [2023-08-30 11:29:48,721 INFO L131 PetriNetUnfolder]: For 7058/7058 co-relation queries the response was YES. [2023-08-30 11:29:48,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282408 conditions, 132159 events. 94458/132159 cut-off events. For 7058/7058 co-relation queries the response was YES. Maximal size of possible extension queue 4042. Compared 906978 event pairs, 80080 based on Foata normal form. 24/56174 useless extension candidates. Maximal degree in co-relation 282394. Up to 15840 conditions per place. [2023-08-30 11:29:49,281 INFO L137 encePairwiseOnDemand]: 610/618 looper letters, 524 selfloop transitions, 51 changer transitions 0/575 dead transitions. [2023-08-30 11:29:49,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 575 transitions, 2702 flow [2023-08-30 11:29:49,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:29:49,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:29:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3515 transitions. [2023-08-30 11:29:49,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473975188781014 [2023-08-30 11:29:49,313 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3515 transitions. [2023-08-30 11:29:49,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3515 transitions. [2023-08-30 11:29:49,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:29:49,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3515 transitions. [2023-08-30 11:29:49,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 292.9166666666667) internal successors, (3515), 12 states have internal predecessors, (3515), 0 states have call successors, (0), 0 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 11:29:49,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 618.0) internal successors, (8034), 13 states have internal predecessors, (8034), 0 states have call successors, (0), 0 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 11:29:49,333 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 618.0) internal successors, (8034), 13 states have internal predecessors, (8034), 0 states have call successors, (0), 0 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 11:29:49,334 INFO L175 Difference]: Start difference. First operand has 66 places, 75 transitions, 284 flow. Second operand 12 states and 3515 transitions. [2023-08-30 11:29:49,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 575 transitions, 2702 flow [2023-08-30 11:29:49,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 575 transitions, 2696 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 11:29:49,353 INFO L231 Difference]: Finished difference. Result has 82 places, 105 transitions, 626 flow [2023-08-30 11:29:49,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=626, PETRI_PLACES=82, PETRI_TRANSITIONS=105} [2023-08-30 11:29:49,355 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2023-08-30 11:29:49,355 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 105 transitions, 626 flow [2023-08-30 11:29:49,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 245.15384615384616) internal successors, (3187), 13 states have internal predecessors, (3187), 0 states have call successors, (0), 0 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 11:29:49,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:29:49,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:29:49,375 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 11:29:49,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:29:49,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:29:49,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:29:49,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1174360713, now seen corresponding path program 1 times [2023-08-30 11:29:49,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:29:49,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853922724] [2023-08-30 11:29:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:49,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:29:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:49,657 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 11:29:49,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:29:49,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853922724] [2023-08-30 11:29:49,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853922724] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:29:49,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694848983] [2023-08-30 11:29:49,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:49,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:29:49,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:29:49,661 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 11:29:49,699 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 11:29:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:49,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:29:49,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:29:49,775 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 11:29:49,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:29:49,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694848983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:29:49,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:29:49,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 11:29:49,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245217400] [2023-08-30 11:29:49,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:29:49,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:29:49,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:29:49,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:29:49,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:29:49,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 618 [2023-08-30 11:29:49,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 105 transitions, 626 flow. Second operand has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 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 11:29:49,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:29:49,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 618 [2023-08-30 11:29:49,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:29:57,328 INFO L130 PetriNetUnfolder]: 79850/111743 cut-off events. [2023-08-30 11:29:57,329 INFO L131 PetriNetUnfolder]: For 6558/6558 co-relation queries the response was YES. [2023-08-30 11:29:57,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234444 conditions, 111743 events. 79850/111743 cut-off events. For 6558/6558 co-relation queries the response was YES. Maximal size of possible extension queue 3439. Compared 749493 event pairs, 66968 based on Foata normal form. 0/49367 useless extension candidates. Maximal degree in co-relation 234423. Up to 111743 conditions per place. [2023-08-30 11:29:57,888 INFO L137 encePairwiseOnDemand]: 615/618 looper letters, 102 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2023-08-30 11:29:57,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 103 transitions, 824 flow [2023-08-30 11:29:57,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:29:57,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:29:57,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 808 transitions. [2023-08-30 11:29:57,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43581445523193096 [2023-08-30 11:29:57,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 808 transitions. [2023-08-30 11:29:57,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 808 transitions. [2023-08-30 11:29:57,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:29:57,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 808 transitions. [2023-08-30 11:29:57,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 11:29:57,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 11:29:57,894 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 11:29:57,894 INFO L175 Difference]: Start difference. First operand has 82 places, 105 transitions, 626 flow. Second operand 3 states and 808 transitions. [2023-08-30 11:29:57,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 103 transitions, 824 flow [2023-08-30 11:29:57,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 103 transitions, 680 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-30 11:29:57,898 INFO L231 Difference]: Finished difference. Result has 77 places, 103 transitions, 476 flow [2023-08-30 11:29:57,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=77, PETRI_TRANSITIONS=103} [2023-08-30 11:29:57,898 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 10 predicate places. [2023-08-30 11:29:57,899 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 103 transitions, 476 flow [2023-08-30 11:29:57,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 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 11:29:57,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:29:57,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:29:57,919 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 11:29:58,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:29:58,104 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:29:58,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:29:58,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2045447239, now seen corresponding path program 1 times [2023-08-30 11:29:58,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:29:58,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505427021] [2023-08-30 11:29:58,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:58,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:29:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:58,153 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 11:29:58,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:29:58,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505427021] [2023-08-30 11:29:58,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505427021] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:29:58,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:29:58,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:29:58,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762607544] [2023-08-30 11:29:58,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:29:58,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:29:58,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:29:58,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:29:58,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:29:58,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 618 [2023-08-30 11:29:58,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 103 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 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 11:29:58,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:29:58,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 618 [2023-08-30 11:29:58,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:30:05,001 INFO L130 PetriNetUnfolder]: 74482/104175 cut-off events. [2023-08-30 11:30:05,001 INFO L131 PetriNetUnfolder]: For 6339/6339 co-relation queries the response was YES. [2023-08-30 11:30:05,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218742 conditions, 104175 events. 74482/104175 cut-off events. For 6339/6339 co-relation queries the response was YES. Maximal size of possible extension queue 3192. Compared 691196 event pairs, 62040 based on Foata normal form. 0/46840 useless extension candidates. Maximal degree in co-relation 218721. Up to 104175 conditions per place. [2023-08-30 11:30:05,511 INFO L137 encePairwiseOnDemand]: 616/618 looper letters, 101 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2023-08-30 11:30:05,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 678 flow [2023-08-30 11:30:05,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:30:05,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:30:05,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 806 transitions. [2023-08-30 11:30:05,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43473570658036675 [2023-08-30 11:30:05,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 806 transitions. [2023-08-30 11:30:05,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 806 transitions. [2023-08-30 11:30:05,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:30:05,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 806 transitions. [2023-08-30 11:30:05,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 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 11:30:05,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 11:30:05,517 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 11:30:05,517 INFO L175 Difference]: Start difference. First operand has 77 places, 103 transitions, 476 flow. Second operand 3 states and 806 transitions. [2023-08-30 11:30:05,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 678 flow [2023-08-30 11:30:05,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 677 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:30:05,520 INFO L231 Difference]: Finished difference. Result has 77 places, 102 transitions, 475 flow [2023-08-30 11:30:05,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=475, PETRI_PLACES=77, PETRI_TRANSITIONS=102} [2023-08-30 11:30:05,521 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 10 predicate places. [2023-08-30 11:30:05,521 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 102 transitions, 475 flow [2023-08-30 11:30:05,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 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 11:30:05,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:30:05,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:30:05,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 11:30:05,522 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:30:05,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:30:05,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2045447238, now seen corresponding path program 1 times [2023-08-30 11:30:05,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:30:05,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004375582] [2023-08-30 11:30:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:05,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:30:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:05,608 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 11:30:05,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:30:05,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004375582] [2023-08-30 11:30:05,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004375582] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:30:05,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771913851] [2023-08-30 11:30:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:05,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:30:05,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:30:05,612 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 11:30:05,641 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 11:30:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:05,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 11:30:05,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:30:05,758 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 11:30:05,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:30:05,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771913851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:30:05,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:30:05,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-08-30 11:30:05,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666101461] [2023-08-30 11:30:05,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:30:05,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:30:05,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:30:05,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:30:05,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:30:05,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 618 [2023-08-30 11:30:05,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 102 transitions, 475 flow. Second operand has 4 states, 4 states have (on average 251.25) internal successors, (1005), 4 states have internal predecessors, (1005), 0 states have call successors, (0), 0 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 11:30:05,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:30:05,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 618 [2023-08-30 11:30:05,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:30:12,676 INFO L130 PetriNetUnfolder]: 76682/106375 cut-off events. [2023-08-30 11:30:12,677 INFO L131 PetriNetUnfolder]: For 6086/6086 co-relation queries the response was YES. [2023-08-30 11:30:12,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227543 conditions, 106375 events. 76682/106375 cut-off events. For 6086/6086 co-relation queries the response was YES. Maximal size of possible extension queue 3191. Compared 728068 event pairs, 27544 based on Foata normal form. 0/49040 useless extension candidates. Maximal degree in co-relation 227521. Up to 57469 conditions per place. [2023-08-30 11:30:13,249 INFO L137 encePairwiseOnDemand]: 610/618 looper letters, 120 selfloop transitions, 7 changer transitions 0/127 dead transitions. [2023-08-30 11:30:13,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 127 transitions, 788 flow [2023-08-30 11:30:13,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:30:13,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:30:13,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1074 transitions. [2023-08-30 11:30:13,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4344660194174757 [2023-08-30 11:30:13,252 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1074 transitions. [2023-08-30 11:30:13,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1074 transitions. [2023-08-30 11:30:13,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:30:13,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1074 transitions. [2023-08-30 11:30:13,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 268.5) internal successors, (1074), 4 states have internal predecessors, (1074), 0 states have call successors, (0), 0 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 11:30:13,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 0 states have call successors, (0), 0 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 11:30:13,265 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 0 states have call successors, (0), 0 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 11:30:13,265 INFO L175 Difference]: Start difference. First operand has 77 places, 102 transitions, 475 flow. Second operand 4 states and 1074 transitions. [2023-08-30 11:30:13,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 127 transitions, 788 flow [2023-08-30 11:30:13,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 127 transitions, 787 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:30:13,269 INFO L231 Difference]: Finished difference. Result has 80 places, 103 transitions, 511 flow [2023-08-30 11:30:13,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=511, PETRI_PLACES=80, PETRI_TRANSITIONS=103} [2023-08-30 11:30:13,270 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2023-08-30 11:30:13,270 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 103 transitions, 511 flow [2023-08-30 11:30:13,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.25) internal successors, (1005), 4 states have internal predecessors, (1005), 0 states have call successors, (0), 0 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 11:30:13,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:30:13,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:30:13,285 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 11:30:13,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:30:13,476 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:30:13,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:30:13,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1015649919, now seen corresponding path program 1 times [2023-08-30 11:30:13,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:30:13,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968012617] [2023-08-30 11:30:13,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:13,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:30:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:13,512 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 11:30:13,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:30:13,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968012617] [2023-08-30 11:30:13,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968012617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:30:13,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:30:13,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:30:13,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377167759] [2023-08-30 11:30:13,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:30:13,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:30:13,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:30:13,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:30:13,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:30:13,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 618 [2023-08-30 11:30:13,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 103 transitions, 511 flow. Second operand has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 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 11:30:13,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:30:13,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 618 [2023-08-30 11:30:13,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:30:26,868 INFO L130 PetriNetUnfolder]: 135774/187467 cut-off events. [2023-08-30 11:30:26,868 INFO L131 PetriNetUnfolder]: For 60470/60470 co-relation queries the response was YES. [2023-08-30 11:30:27,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446853 conditions, 187467 events. 135774/187467 cut-off events. For 60470/60470 co-relation queries the response was YES. Maximal size of possible extension queue 5151. Compared 1327460 event pairs, 61116 based on Foata normal form. 0/95130 useless extension candidates. Maximal degree in co-relation 446828. Up to 104902 conditions per place. [2023-08-30 11:30:27,984 INFO L137 encePairwiseOnDemand]: 614/618 looper letters, 141 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2023-08-30 11:30:27,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 143 transitions, 908 flow [2023-08-30 11:30:27,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:30:27,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:30:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 847 transitions. [2023-08-30 11:30:27,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45685005393743255 [2023-08-30 11:30:27,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 847 transitions. [2023-08-30 11:30:27,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 847 transitions. [2023-08-30 11:30:27,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:30:27,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 847 transitions. [2023-08-30 11:30:27,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 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 11:30:27,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 11:30:27,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 11:30:27,990 INFO L175 Difference]: Start difference. First operand has 80 places, 103 transitions, 511 flow. Second operand 3 states and 847 transitions. [2023-08-30 11:30:27,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 143 transitions, 908 flow [2023-08-30 11:30:28,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 143 transitions, 907 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:30:28,106 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 528 flow [2023-08-30 11:30:28,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=528, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2023-08-30 11:30:28,106 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2023-08-30 11:30:28,107 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 528 flow [2023-08-30 11:30:28,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 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 11:30:28,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:30:28,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:30:28,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 11:30:28,107 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:30:28,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:30:28,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1015649777, now seen corresponding path program 1 times [2023-08-30 11:30:28,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:30:28,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102972301] [2023-08-30 11:30:28,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:28,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:30:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:28,195 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 11:30:28,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:30:28,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102972301] [2023-08-30 11:30:28,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102972301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:30:28,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:30:28,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:30:28,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318094412] [2023-08-30 11:30:28,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:30:28,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:30:28,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:30:28,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:30:28,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:30:28,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 618 [2023-08-30 11:30:28,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 528 flow. Second operand has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 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 11:30:28,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:30:28,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 618 [2023-08-30 11:30:28,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:30:55,992 INFO L130 PetriNetUnfolder]: 272306/372751 cut-off events. [2023-08-30 11:30:55,993 INFO L131 PetriNetUnfolder]: For 172956/172956 co-relation queries the response was YES. [2023-08-30 11:30:57,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925915 conditions, 372751 events. 272306/372751 cut-off events. For 172956/172956 co-relation queries the response was YES. Maximal size of possible extension queue 9926. Compared 2733493 event pairs, 30371 based on Foata normal form. 6776/191688 useless extension candidates. Maximal degree in co-relation 925889. Up to 164088 conditions per place. [2023-08-30 11:30:58,616 INFO L137 encePairwiseOnDemand]: 608/618 looper letters, 191 selfloop transitions, 12 changer transitions 0/203 dead transitions. [2023-08-30 11:30:58,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 203 transitions, 1250 flow [2023-08-30 11:30:58,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:30:58,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:30:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1387 transitions. [2023-08-30 11:30:58,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488673139158576 [2023-08-30 11:30:58,635 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1387 transitions. [2023-08-30 11:30:58,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1387 transitions. [2023-08-30 11:30:58,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:30:58,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1387 transitions. [2023-08-30 11:30:58,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 277.4) internal successors, (1387), 5 states have internal predecessors, (1387), 0 states have call successors, (0), 0 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 11:30:58,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 618.0) internal successors, (3708), 6 states have internal predecessors, (3708), 0 states have call successors, (0), 0 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 11:30:58,652 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 618.0) internal successors, (3708), 6 states have internal predecessors, (3708), 0 states have call successors, (0), 0 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 11:30:58,652 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 528 flow. Second operand 5 states and 1387 transitions. [2023-08-30 11:30:58,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 203 transitions, 1250 flow [2023-08-30 11:30:58,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 203 transitions, 1245 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:30:58,796 INFO L231 Difference]: Finished difference. Result has 88 places, 115 transitions, 643 flow [2023-08-30 11:30:58,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=643, PETRI_PLACES=88, PETRI_TRANSITIONS=115} [2023-08-30 11:30:58,797 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2023-08-30 11:30:58,797 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 115 transitions, 643 flow [2023-08-30 11:30:58,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 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 11:30:58,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:30:58,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:30:58,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 11:30:58,798 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:30:58,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:30:58,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1362665638, now seen corresponding path program 1 times [2023-08-30 11:30:58,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:30:58,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485728772] [2023-08-30 11:30:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:58,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:30:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:58,855 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 11:30:58,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:30:58,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485728772] [2023-08-30 11:30:58,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485728772] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:30:58,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:30:58,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:30:58,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652732320] [2023-08-30 11:30:58,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:30:58,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:30:58,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:30:58,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:30:58,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:30:58,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 618 [2023-08-30 11:30:58,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 115 transitions, 643 flow. Second operand has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 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 11:30:58,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:30:58,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 618 [2023-08-30 11:30:58,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand