./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.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-more-buffer-mult2.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 df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a --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 11:44:41,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:44:41,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:44:41,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:44:41,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:44:41,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:44:41,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:44:41,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:44:41,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:44:41,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:44:41,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:44:41,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:44:41,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:44:41,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:44:41,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:44:41,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:44:41,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:44:41,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:44:41,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:44:41,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:44:41,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:44:41,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:44:41,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:44:41,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:44:41,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:44:41,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:44:41,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:44:41,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:44:41,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:44:41,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:44:41,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:44:41,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:44:41,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:44:41,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:44:41,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:44:41,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:44:41,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:44:41,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:44:41,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:44:41,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:44:41,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:44:41,655 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:44:41,688 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:44:41,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:44:41,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:44:41,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:44:41,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:44:41,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:44:41,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:44:41,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:44:41,692 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:44:41,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:44:41,693 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:44:41,693 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:44:41,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:44:41,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:44:41,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:44:41,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:44:41,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:44:41,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:44:41,694 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:44:41,694 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:44:41,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:44:41,695 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:44:41,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:44:41,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:44:41,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:44:41,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:44:41,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:44:41,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:44:41,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:44:41,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:44:41,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:44:41,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:44:41,697 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:44:41,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:44:41,697 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:44:41,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:44:41,698 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:44:41,698 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:44:41,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:44:42,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:44:42,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:44:42,020 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:44:42,020 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:44:42,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2023-08-30 11:44:43,291 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:44:43,527 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:44:43,528 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2023-08-30 11:44:43,535 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae7a92415/973c53fbfe9a4e6996afe2c100f7fcd8/FLAG46de8c631 [2023-08-30 11:44:43,558 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae7a92415/973c53fbfe9a4e6996afe2c100f7fcd8 [2023-08-30 11:44:43,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:44:43,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:44:43,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:44:43,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:44:43,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:44:43,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:44:43" (1/1) ... [2023-08-30 11:44:43,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e548cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:43, skipping insertion in model container [2023-08-30 11:44:43,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:44:43" (1/1) ... [2023-08-30 11:44:43,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:44:43,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:44:43,797 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2023-08-30 11:44:43,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:44:43,820 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:44:43,866 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2023-08-30 11:44:43,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:44:43,883 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:44:43,883 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:44:43,889 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:44:43,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:43 WrapperNode [2023-08-30 11:44:43,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:44:43,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:44:43,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:44:43,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:44:43,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:43" (1/1) ... [2023-08-30 11:44:43,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:43" (1/1) ... [2023-08-30 11:44:43,963 INFO L138 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 357 [2023-08-30 11:44:43,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:44:43,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:44:43,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:44:43,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:44:43,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:43" (1/1) ... [2023-08-30 11:44:43,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:43" (1/1) ... [2023-08-30 11:44:43,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:43" (1/1) ... [2023-08-30 11:44:43,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:43" (1/1) ... [2023-08-30 11:44:44,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:43" (1/1) ... [2023-08-30 11:44:44,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:43" (1/1) ... [2023-08-30 11:44:44,029 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:43" (1/1) ... [2023-08-30 11:44:44,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:43" (1/1) ... [2023-08-30 11:44:44,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:44:44,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:44:44,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:44:44,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:44:44,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:43" (1/1) ... [2023-08-30 11:44:44,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:44:44,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:44:44,078 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 11:44:44,105 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 11:44:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:44:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:44:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:44:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:44:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:44:44,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:44:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:44:44,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:44:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:44:44,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:44:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 11:44:44,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 11:44:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:44:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:44:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:44:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:44:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:44:44,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:44:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:44:44,123 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 11:44:44,300 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:44:44,301 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:44:44,772 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:44:45,244 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:44:45,245 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 11:44:45,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:44:45 BoogieIcfgContainer [2023-08-30 11:44:45,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:44:45,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:44:45,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:44:45,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:44:45,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:44:43" (1/3) ... [2023-08-30 11:44:45,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c64a3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:44:45, skipping insertion in model container [2023-08-30 11:44:45,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:43" (2/3) ... [2023-08-30 11:44:45,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c64a3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:44:45, skipping insertion in model container [2023-08-30 11:44:45,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:44:45" (3/3) ... [2023-08-30 11:44:45,264 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2023-08-30 11:44:45,271 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:44:45,279 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:44:45,280 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-30 11:44:45,280 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:44:45,457 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 11:44:45,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 252 transitions, 536 flow [2023-08-30 11:44:45,627 INFO L130 PetriNetUnfolder]: 18/248 cut-off events. [2023-08-30 11:44:45,628 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 11:44:45,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 248 events. 18/248 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 307 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 205. Up to 2 conditions per place. [2023-08-30 11:44:45,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 252 transitions, 536 flow [2023-08-30 11:44:45,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 228 transitions, 477 flow [2023-08-30 11:44:45,648 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:44:45,660 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 228 transitions, 477 flow [2023-08-30 11:44:45,663 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 228 transitions, 477 flow [2023-08-30 11:44:45,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 228 transitions, 477 flow [2023-08-30 11:44:45,724 INFO L130 PetriNetUnfolder]: 17/228 cut-off events. [2023-08-30 11:44:45,725 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:44:45,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 228 events. 17/228 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 300 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 205. Up to 2 conditions per place. [2023-08-30 11:44:45,759 INFO L119 LiptonReduction]: Number of co-enabled transitions 4384 [2023-08-30 11:44:59,772 INFO L134 LiptonReduction]: Checked pairs total: 7340 [2023-08-30 11:44:59,772 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-08-30 11:44:59,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:44:59,793 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;@1114407, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:44:59,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-08-30 11:44:59,796 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:44:59,796 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:44:59,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:59,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:44:59,798 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:44:59,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:59,802 INFO L85 PathProgramCache]: Analyzing trace with hash 43038, now seen corresponding path program 1 times [2023-08-30 11:44:59,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:59,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361589916] [2023-08-30 11:44:59,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:59,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:45:00,187 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 11:45:00,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:45:00,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361589916] [2023-08-30 11:45:00,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361589916] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:45:00,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:45:00,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:45:00,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170638712] [2023-08-30 11:45:00,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:45:00,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:45:00,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:45:00,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:45:00,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:45:00,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 480 [2023-08-30 11:45:00,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:00,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:45:00,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 480 [2023-08-30 11:45:00,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:45:09,919 INFO L130 PetriNetUnfolder]: 73037/90281 cut-off events. [2023-08-30 11:45:09,919 INFO L131 PetriNetUnfolder]: For 1182/1182 co-relation queries the response was YES. [2023-08-30 11:45:10,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181763 conditions, 90281 events. 73037/90281 cut-off events. For 1182/1182 co-relation queries the response was YES. Maximal size of possible extension queue 7807. Compared 512124 event pairs, 46499 based on Foata normal form. 0/24431 useless extension candidates. Maximal degree in co-relation 80304. Up to 44280 conditions per place. [2023-08-30 11:45:10,546 INFO L137 encePairwiseOnDemand]: 464/480 looper letters, 89 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2023-08-30 11:45:10,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 426 flow [2023-08-30 11:45:10,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:45:10,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:45:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 698 transitions. [2023-08-30 11:45:10,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847222222222222 [2023-08-30 11:45:10,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 698 transitions. [2023-08-30 11:45:10,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 698 transitions. [2023-08-30 11:45:10,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:45:10,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 698 transitions. [2023-08-30 11:45:10,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:10,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:10,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:10,592 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 147 flow. Second operand 3 states and 698 transitions. [2023-08-30 11:45:10,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 426 flow [2023-08-30 11:45:10,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 400 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 11:45:10,800 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 154 flow [2023-08-30 11:45:10,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2023-08-30 11:45:10,809 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2023-08-30 11:45:10,810 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 154 flow [2023-08-30 11:45:10,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:10,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:45:10,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:45:10,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:45:10,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:45:10,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:45:10,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1336203, now seen corresponding path program 1 times [2023-08-30 11:45:10,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:45:10,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186843674] [2023-08-30 11:45:10,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:45:10,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:45:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:45:10,960 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 11:45:10,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:45:10,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186843674] [2023-08-30 11:45:10,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186843674] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:45:10,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665261743] [2023-08-30 11:45:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:45:10,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:45:10,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:45:10,969 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 11:45:11,006 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 11:45:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:45:11,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:45:11,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:45:11,138 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 11:45:11,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:45:11,152 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 11:45:11,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665261743] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:45:11,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:45:11,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:45:11,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704224236] [2023-08-30 11:45:11,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:45:11,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:45:11,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:45:11,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:45:11,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:45:11,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 480 [2023-08-30 11:45:11,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 196.14285714285714) internal successors, (1373), 7 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:11,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:45:11,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 480 [2023-08-30 11:45:11,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:45:30,902 INFO L130 PetriNetUnfolder]: 182588/225701 cut-off events. [2023-08-30 11:45:30,903 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:45:31,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451212 conditions, 225701 events. 182588/225701 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13114. Compared 1364276 event pairs, 116246 based on Foata normal form. 0/61173 useless extension candidates. Maximal degree in co-relation 360915. Up to 44283 conditions per place. [2023-08-30 11:45:32,060 INFO L137 encePairwiseOnDemand]: 472/480 looper letters, 210 selfloop transitions, 21 changer transitions 0/237 dead transitions. [2023-08-30 11:45:32,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 237 transitions, 1042 flow [2023-08-30 11:45:32,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:45:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:45:32,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1602 transitions. [2023-08-30 11:45:32,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767857142857143 [2023-08-30 11:45:32,066 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1602 transitions. [2023-08-30 11:45:32,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1602 transitions. [2023-08-30 11:45:32,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:45:32,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1602 transitions. [2023-08-30 11:45:32,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 228.85714285714286) internal successors, (1602), 7 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:32,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:32,079 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:32,079 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 154 flow. Second operand 7 states and 1602 transitions. [2023-08-30 11:45:32,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 237 transitions, 1042 flow [2023-08-30 11:45:32,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 237 transitions, 1028 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:45:32,083 INFO L231 Difference]: Finished difference. Result has 66 places, 73 transitions, 285 flow [2023-08-30 11:45:32,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=285, PETRI_PLACES=66, PETRI_TRANSITIONS=73} [2023-08-30 11:45:32,084 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-08-30 11:45:32,084 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 73 transitions, 285 flow [2023-08-30 11:45:32,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 196.14285714285714) internal successors, (1373), 7 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:32,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:45:32,086 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 11:45:32,094 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 11:45:32,290 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 11:45:32,291 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:45:32,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:45:32,291 INFO L85 PathProgramCache]: Analyzing trace with hash 41424317, now seen corresponding path program 1 times [2023-08-30 11:45:32,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:45:32,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65672455] [2023-08-30 11:45:32,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:45:32,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:45:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:45:32,356 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 11:45:32,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:45:32,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65672455] [2023-08-30 11:45:32,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65672455] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:45:32,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:45:32,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:45:32,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117641735] [2023-08-30 11:45:32,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:45:32,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:45:32,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:45:32,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:45:32,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:45:32,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 480 [2023-08-30 11:45:32,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 73 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:32,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:45:32,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 480 [2023-08-30 11:45:32,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:45:51,375 INFO L130 PetriNetUnfolder]: 182606/225693 cut-off events. [2023-08-30 11:45:51,376 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:45:51,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451266 conditions, 225693 events. 182606/225693 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15816. Compared 1384094 event pairs, 116250 based on Foata normal form. 2/60943 useless extension candidates. Maximal degree in co-relation 270740. Up to 221403 conditions per place. [2023-08-30 11:45:52,542 INFO L137 encePairwiseOnDemand]: 477/480 looper letters, 58 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2023-08-30 11:45:52,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 349 flow [2023-08-30 11:45:52,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:45:52,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:45:52,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions. [2023-08-30 11:45:52,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44027777777777777 [2023-08-30 11:45:52,545 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions. [2023-08-30 11:45:52,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions. [2023-08-30 11:45:52,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:45:52,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions. [2023-08-30 11:45:52,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:52,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:52,550 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:52,550 INFO L175 Difference]: Start difference. First operand has 66 places, 73 transitions, 285 flow. Second operand 3 states and 634 transitions. [2023-08-30 11:45:52,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 349 flow [2023-08-30 11:45:52,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 330 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 11:45:52,553 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 214 flow [2023-08-30 11:45:52,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2023-08-30 11:45:52,554 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2023-08-30 11:45:52,554 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 214 flow [2023-08-30 11:45:52,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:52,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:45:52,555 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:45:52,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 11:45:52,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:45:52,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:45:52,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1154128734, now seen corresponding path program 2 times [2023-08-30 11:45:52,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:45:52,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679257274] [2023-08-30 11:45:52,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:45:52,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:45:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:45:52,689 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 11:45:52,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:45:52,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679257274] [2023-08-30 11:45:52,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679257274] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:45:52,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589954060] [2023-08-30 11:45:52,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:45:52,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:45:52,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:45:52,697 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 11:45:52,705 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 11:45:52,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:45:52,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:45:52,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:45:52,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:45:52,844 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 11:45:52,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:45:52,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589954060] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:45:52,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:45:52,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:45:52,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798151417] [2023-08-30 11:45:52,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:45:52,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:45:52,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:45:52,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:45:52,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:45:52,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 480 [2023-08-30 11:45:52,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:52,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:45:52,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 480 [2023-08-30 11:45:52,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:46:11,634 INFO L130 PetriNetUnfolder]: 182606/225692 cut-off events. [2023-08-30 11:46:11,634 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 11:46:12,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451251 conditions, 225692 events. 182606/225692 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15816. Compared 1384328 event pairs, 116250 based on Foata normal form. 1/60942 useless extension candidates. Maximal degree in co-relation 451239. Up to 221397 conditions per place. [2023-08-30 11:46:12,866 INFO L137 encePairwiseOnDemand]: 477/480 looper letters, 52 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2023-08-30 11:46:12,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 320 flow [2023-08-30 11:46:12,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:46:12,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:46:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2023-08-30 11:46:12,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44305555555555554 [2023-08-30 11:46:12,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2023-08-30 11:46:12,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2023-08-30 11:46:12,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:46:12,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2023-08-30 11:46:12,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:12,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:12,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:12,875 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 214 flow. Second operand 3 states and 638 transitions. [2023-08-30 11:46:12,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 320 flow [2023-08-30 11:46:12,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:46:12,879 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 215 flow [2023-08-30 11:46:12,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2023-08-30 11:46:12,882 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2023-08-30 11:46:12,882 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 215 flow [2023-08-30 11:46:12,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:12,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:46:12,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:46:12,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:46:13,088 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 11:46:13,088 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:46:13,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:46:13,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1162364152, now seen corresponding path program 1 times [2023-08-30 11:46:13,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:46:13,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322363819] [2023-08-30 11:46:13,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:46:13,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:46:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:46:13,205 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 11:46:13,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:46:13,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322363819] [2023-08-30 11:46:13,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322363819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:46:13,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:46:13,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:46:13,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804813513] [2023-08-30 11:46:13,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:46:13,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:46:13,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:46:13,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:46:13,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:46:13,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 480 [2023-08-30 11:46:13,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 215 flow. Second operand has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:13,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:46:13,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 480 [2023-08-30 11:46:13,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:46:33,214 INFO L130 PetriNetUnfolder]: 196206/244148 cut-off events. [2023-08-30 11:46:33,214 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 11:46:33,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488128 conditions, 244148 events. 196206/244148 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 16825. Compared 1532013 event pairs, 125995 based on Foata normal form. 0/70123 useless extension candidates. Maximal degree in co-relation 488115. Up to 221336 conditions per place. [2023-08-30 11:46:34,529 INFO L137 encePairwiseOnDemand]: 467/480 looper letters, 92 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2023-08-30 11:46:34,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 101 transitions, 514 flow [2023-08-30 11:46:34,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:46:34,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:46:34,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 855 transitions. [2023-08-30 11:46:34,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2023-08-30 11:46:34,532 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 855 transitions. [2023-08-30 11:46:34,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 855 transitions. [2023-08-30 11:46:34,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:46:34,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 855 transitions. [2023-08-30 11:46:34,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:34,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:34,538 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:34,539 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 215 flow. Second operand 4 states and 855 transitions. [2023-08-30 11:46:34,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 101 transitions, 514 flow [2023-08-30 11:46:34,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 101 transitions, 502 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:46:34,542 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 230 flow [2023-08-30 11:46:34,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2023-08-30 11:46:34,542 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-08-30 11:46:34,543 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 230 flow [2023-08-30 11:46:34,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:34,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:46:34,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:46:34,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:46:34,544 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:46:34,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:46:34,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1426489829, now seen corresponding path program 1 times [2023-08-30 11:46:34,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:46:34,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122311166] [2023-08-30 11:46:34,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:46:34,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:46:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:46:34,675 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 11:46:34,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:46:34,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122311166] [2023-08-30 11:46:34,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122311166] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:46:34,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955454977] [2023-08-30 11:46:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:46:34,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:46:34,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:46:34,678 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 11:46:34,680 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 11:46:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:46:34,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:46:34,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:46:34,828 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 11:46:34,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:46:34,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955454977] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:46:34,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:46:34,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 11:46:34,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375350919] [2023-08-30 11:46:34,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:46:34,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:46:34,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:46:34,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:46:34,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:46:34,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 480 [2023-08-30 11:46:34,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:34,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:46:34,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 480 [2023-08-30 11:46:34,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:46:50,197 INFO L130 PetriNetUnfolder]: 147516/184703 cut-off events. [2023-08-30 11:46:50,198 INFO L131 PetriNetUnfolder]: For 14186/14186 co-relation queries the response was YES. [2023-08-30 11:46:50,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421681 conditions, 184703 events. 147516/184703 cut-off events. For 14186/14186 co-relation queries the response was YES. Maximal size of possible extension queue 12516. Compared 1159271 event pairs, 95350 based on Foata normal form. 0/71337 useless extension candidates. Maximal degree in co-relation 421667. Up to 181123 conditions per place. [2023-08-30 11:46:51,255 INFO L137 encePairwiseOnDemand]: 477/480 looper letters, 55 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-30 11:46:51,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 334 flow [2023-08-30 11:46:51,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:46:51,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:46:51,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 643 transitions. [2023-08-30 11:46:51,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4465277777777778 [2023-08-30 11:46:51,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 643 transitions. [2023-08-30 11:46:51,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 643 transitions. [2023-08-30 11:46:51,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:46:51,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 643 transitions. [2023-08-30 11:46:51,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:51,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:51,263 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:51,263 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 230 flow. Second operand 3 states and 643 transitions. [2023-08-30 11:46:51,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 334 flow [2023-08-30 11:46:51,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 62 transitions, 328 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 11:46:51,271 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 218 flow [2023-08-30 11:46:51,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2023-08-30 11:46:51,272 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -5 predicate places. [2023-08-30 11:46:51,272 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 218 flow [2023-08-30 11:46:51,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:51,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:46:51,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:46:51,283 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 11:46:51,477 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 11:46:51,478 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:46:51,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:46:51,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1426489830, now seen corresponding path program 1 times [2023-08-30 11:46:51,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:46:51,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242775751] [2023-08-30 11:46:51,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:46:51,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:46:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:46:51,573 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 11:46:51,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:46:51,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242775751] [2023-08-30 11:46:51,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242775751] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:46:51,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:46:51,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:46:51,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310753098] [2023-08-30 11:46:51,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:46:51,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:46:51,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:46:51,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:46:51,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:46:51,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 480 [2023-08-30 11:46:51,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:51,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:46:51,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 480 [2023-08-30 11:46:51,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:09,755 INFO L130 PetriNetUnfolder]: 168011/214508 cut-off events. [2023-08-30 11:47:09,755 INFO L131 PetriNetUnfolder]: For 8563/8563 co-relation queries the response was YES. [2023-08-30 11:47:10,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480759 conditions, 214508 events. 168011/214508 cut-off events. For 8563/8563 co-relation queries the response was YES. Maximal size of possible extension queue 14430. Compared 1453224 event pairs, 48565 based on Foata normal form. 0/84182 useless extension candidates. Maximal degree in co-relation 480744. Up to 127766 conditions per place. [2023-08-30 11:47:11,030 INFO L137 encePairwiseOnDemand]: 476/480 looper letters, 89 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2023-08-30 11:47:11,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 97 transitions, 489 flow [2023-08-30 11:47:11,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:11,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:11,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-08-30 11:47:11,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47291666666666665 [2023-08-30 11:47:11,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-08-30 11:47:11,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-08-30 11:47:11,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:11,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-08-30 11:47:11,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:11,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:11,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:11,037 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 218 flow. Second operand 3 states and 681 transitions. [2023-08-30 11:47:11,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 97 transitions, 489 flow [2023-08-30 11:47:11,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 488 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:11,054 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 233 flow [2023-08-30 11:47:11,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2023-08-30 11:47:11,055 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -3 predicate places. [2023-08-30 11:47:11,055 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 233 flow [2023-08-30 11:47:11,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:11,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:11,055 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:47:11,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:47:11,056 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:47:11,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:11,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1676871067, now seen corresponding path program 1 times [2023-08-30 11:47:11,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:11,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932926922] [2023-08-30 11:47:11,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:11,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:11,142 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 11:47:11,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:11,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932926922] [2023-08-30 11:47:11,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932926922] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:11,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838175667] [2023-08-30 11:47:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:11,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:11,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:11,146 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 11:47:11,149 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 11:47:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:11,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:47:11,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:11,298 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 11:47:11,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:47:11,356 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 11:47:11,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838175667] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:47:11,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:47:11,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 11:47:11,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252140015] [2023-08-30 11:47:11,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:47:11,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:47:11,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:11,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:47:11,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:47:11,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 480 [2023-08-30 11:47:11,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 233 flow. Second operand has 13 states, 13 states have (on average 196.15384615384616) internal successors, (2550), 13 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:11,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:11,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 480 [2023-08-30 11:47:11,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand