./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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-mult.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 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:36:57,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:36:57,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:36:57,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:36:57,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:36:57,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:36:57,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:36:57,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:36:57,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:36:57,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:36:57,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:36:57,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:36:57,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:36:57,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:36:57,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:36:57,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:36:57,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:36:57,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:36:57,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:36:57,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:36:57,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:36:57,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:36:57,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:36:57,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:36:57,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:36:57,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:36:57,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:36:57,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:36:57,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:36:57,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:36:57,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:36:57,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:36:57,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:36:57,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:36:57,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:36:57,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:36:57,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:36:57,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:36:57,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:36:57,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:36:57,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:36:57,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:36:57,795 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:36:57,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:36:57,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:36:57,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:36:57,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:36:57,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:36:57,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:36:57,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:36:57,799 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:36:57,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:36:57,800 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:36:57,800 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:36:57,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:36:57,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:36:57,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:36:57,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:36:57,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:36:57,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:36:57,801 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:36:57,801 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:36:57,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:36:57,802 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:36:57,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:36:57,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:36:57,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:36:57,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:36:57,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:36:57,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:36:57,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:36:57,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:36:57,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:36:57,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:36:57,804 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:36:57,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:36:57,805 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:36:57,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:36:57,805 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:36:57,805 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:36:58,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:36:58,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:36:58,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:36:58,113 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:36:58,114 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:36:58,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2023-08-30 15:36:59,335 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:36:59,537 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:36:59,538 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2023-08-30 15:36:59,544 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f48d890c9/6da30826f568488eab7a71aabf17776f/FLAGb21f65154 [2023-08-30 15:36:59,556 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f48d890c9/6da30826f568488eab7a71aabf17776f [2023-08-30 15:36:59,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:36:59,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:36:59,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:36:59,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:36:59,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:36:59,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:36:59" (1/1) ... [2023-08-30 15:36:59,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1368390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:59, skipping insertion in model container [2023-08-30 15:36:59,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:36:59" (1/1) ... [2023-08-30 15:36:59,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:36:59,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:36:59,799 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-mult.wvr.c[4218,4231] [2023-08-30 15:36:59,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:36:59,824 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:36:59,863 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-mult.wvr.c[4218,4231] [2023-08-30 15:36:59,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:36:59,891 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:36:59,892 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:36:59,898 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:36:59,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:59 WrapperNode [2023-08-30 15:36:59,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:36:59,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:36:59,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:36:59,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:36:59,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:59" (1/1) ... [2023-08-30 15:36:59,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:59" (1/1) ... [2023-08-30 15:36:59,967 INFO L138 Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 361 [2023-08-30 15:36:59,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:36:59,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:36:59,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:36:59,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:36:59,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:59" (1/1) ... [2023-08-30 15:36:59,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:59" (1/1) ... [2023-08-30 15:36:59,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:59" (1/1) ... [2023-08-30 15:36:59,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:59" (1/1) ... [2023-08-30 15:37:00,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:59" (1/1) ... [2023-08-30 15:37:00,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:59" (1/1) ... [2023-08-30 15:37:00,021 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:59" (1/1) ... [2023-08-30 15:37:00,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:59" (1/1) ... [2023-08-30 15:37:00,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:37:00,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:37:00,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:37:00,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:37:00,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:59" (1/1) ... [2023-08-30 15:37:00,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:37:00,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:37:00,069 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 15:37:00,091 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 15:37:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:37:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:37:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:37:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:37:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:37:00,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:37:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:37:00,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:37:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:37:00,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:37:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 15:37:00,118 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 15:37:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:37:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:37:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:37:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:37:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:37:00,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:37:00,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:37:00,120 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 15:37:00,252 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:37:00,254 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:37:00,671 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:37:01,129 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:37:01,130 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 15:37:01,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:37:01 BoogieIcfgContainer [2023-08-30 15:37:01,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:37:01,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:37:01,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:37:01,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:37:01,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:36:59" (1/3) ... [2023-08-30 15:37:01,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3f95bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:37:01, skipping insertion in model container [2023-08-30 15:37:01,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:59" (2/3) ... [2023-08-30 15:37:01,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3f95bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:37:01, skipping insertion in model container [2023-08-30 15:37:01,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:37:01" (3/3) ... [2023-08-30 15:37:01,142 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2023-08-30 15:37:01,150 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:37:01,158 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:37:01,158 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-30 15:37:01,159 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:37:01,370 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 15:37:01,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 254 transitions, 540 flow [2023-08-30 15:37:01,534 INFO L130 PetriNetUnfolder]: 18/250 cut-off events. [2023-08-30 15:37:01,534 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 15:37:01,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 250 events. 18/250 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 293 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 207. Up to 2 conditions per place. [2023-08-30 15:37:01,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 254 transitions, 540 flow [2023-08-30 15:37:01,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 230 transitions, 481 flow [2023-08-30 15:37:01,554 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:37:01,569 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 230 transitions, 481 flow [2023-08-30 15:37:01,573 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 230 transitions, 481 flow [2023-08-30 15:37:01,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 230 transitions, 481 flow [2023-08-30 15:37:01,655 INFO L130 PetriNetUnfolder]: 17/230 cut-off events. [2023-08-30 15:37:01,655 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:37:01,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 230 events. 17/230 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 290 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 207. Up to 2 conditions per place. [2023-08-30 15:37:01,661 INFO L119 LiptonReduction]: Number of co-enabled transitions 4644 [2023-08-30 15:37:17,714 INFO L134 LiptonReduction]: Checked pairs total: 9412 [2023-08-30 15:37:17,715 INFO L136 LiptonReduction]: Total number of compositions: 231 [2023-08-30 15:37:17,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:37:17,732 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;@63238f66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:37:17,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-08-30 15:37:17,735 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:37:17,735 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:37:17,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:37:17,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:37:17,736 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 15:37:17,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:37:17,740 INFO L85 PathProgramCache]: Analyzing trace with hash 42807, now seen corresponding path program 1 times [2023-08-30 15:37:17,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:37:17,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563725271] [2023-08-30 15:37:17,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:17,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:37:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:18,094 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 15:37:18,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:37:18,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563725271] [2023-08-30 15:37:18,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563725271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:37:18,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:37:18,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:37:18,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686602640] [2023-08-30 15:37:18,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:37:18,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:37:18,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:37:18,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:37:18,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:37:18,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 485 [2023-08-30 15:37:18,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 151 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 15:37:18,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:37:18,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 485 [2023-08-30 15:37:18,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:37:29,784 INFO L130 PetriNetUnfolder]: 90903/113049 cut-off events. [2023-08-30 15:37:29,785 INFO L131 PetriNetUnfolder]: For 1312/1312 co-relation queries the response was YES. [2023-08-30 15:37:30,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227446 conditions, 113049 events. 90903/113049 cut-off events. For 1312/1312 co-relation queries the response was YES. Maximal size of possible extension queue 9860. Compared 669310 event pairs, 60600 based on Foata normal form. 0/34841 useless extension candidates. Maximal degree in co-relation 102115. Up to 55401 conditions per place. [2023-08-30 15:37:30,667 INFO L137 encePairwiseOnDemand]: 469/485 looper letters, 93 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2023-08-30 15:37:30,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 103 transitions, 442 flow [2023-08-30 15:37:30,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:37:30,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:37:30,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 702 transitions. [2023-08-30 15:37:30,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824742268041237 [2023-08-30 15:37:30,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 702 transitions. [2023-08-30 15:37:30,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 702 transitions. [2023-08-30 15:37:30,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:37:30,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 702 transitions. [2023-08-30 15:37:30,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 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 15:37:30,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 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 15:37:30,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 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 15:37:30,708 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 151 flow. Second operand 3 states and 702 transitions. [2023-08-30 15:37:30,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 103 transitions, 442 flow [2023-08-30 15:37:31,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 416 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 15:37:31,590 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 158 flow [2023-08-30 15:37:31,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2023-08-30 15:37:31,595 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-08-30 15:37:31,595 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 158 flow [2023-08-30 15:37:31,596 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 15:37:31,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:37:31,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:37:31,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:37:31,597 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 15:37:31,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:37:31,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1329307, now seen corresponding path program 1 times [2023-08-30 15:37:31,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:37:31,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386560995] [2023-08-30 15:37:31,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:31,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:37:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:31,685 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 15:37:31,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:37:31,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386560995] [2023-08-30 15:37:31,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386560995] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:37:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818784212] [2023-08-30 15:37:31,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:31,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:37:31,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:37:31,689 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 15:37:31,715 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 15:37:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:31,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:37:31,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:37:31,890 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 15:37:31,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:37:31,906 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 15:37:31,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818784212] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:37:31,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:37:31,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:37:31,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727482022] [2023-08-30 15:37:31,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:37:31,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:37:31,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:37:31,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:37:31,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:37:31,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 485 [2023-08-30 15:37:31,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 158 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 15:37:31,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:37:31,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 485 [2023-08-30 15:37:31,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:37:56,630 INFO L130 PetriNetUnfolder]: 227262/282621 cut-off events. [2023-08-30 15:37:56,630 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:37:57,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565039 conditions, 282621 events. 227262/282621 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18180. Compared 1789149 event pairs, 151500 based on Foata normal form. 0/87207 useless extension candidates. Maximal degree in co-relation 451987. Up to 55399 conditions per place. [2023-08-30 15:37:58,077 INFO L137 encePairwiseOnDemand]: 477/485 looper letters, 220 selfloop transitions, 21 changer transitions 0/247 dead transitions. [2023-08-30 15:37:58,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 247 transitions, 1082 flow [2023-08-30 15:37:58,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:37:58,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:37:58,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1612 transitions. [2023-08-30 15:37:58,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748159057437408 [2023-08-30 15:37:58,084 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1612 transitions. [2023-08-30 15:37:58,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1612 transitions. [2023-08-30 15:37:58,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:37:58,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1612 transitions. [2023-08-30 15:37:58,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 230.28571428571428) internal successors, (1612), 7 states have internal predecessors, (1612), 0 states have call successors, (0), 0 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 15:37:58,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 485.0) internal successors, (3880), 8 states have internal predecessors, (3880), 0 states have call successors, (0), 0 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 15:37:58,097 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 485.0) internal successors, (3880), 8 states have internal predecessors, (3880), 0 states have call successors, (0), 0 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 15:37:58,097 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 158 flow. Second operand 7 states and 1612 transitions. [2023-08-30 15:37:58,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 247 transitions, 1082 flow [2023-08-30 15:37:58,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 247 transitions, 1068 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:37:58,103 INFO L231 Difference]: Finished difference. Result has 68 places, 75 transitions, 289 flow [2023-08-30 15:37:58,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=289, PETRI_PLACES=68, PETRI_TRANSITIONS=75} [2023-08-30 15:37:58,104 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2023-08-30 15:37:58,104 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 75 transitions, 289 flow [2023-08-30 15:37:58,105 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 15:37:58,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:37:58,106 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 15:37:58,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 15:37:58,319 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 15:37:58,319 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 15:37:58,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:37:58,320 INFO L85 PathProgramCache]: Analyzing trace with hash 41210808, now seen corresponding path program 1 times [2023-08-30 15:37:58,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:37:58,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133624181] [2023-08-30 15:37:58,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:58,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:37:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:58,384 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 15:37:58,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:37:58,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133624181] [2023-08-30 15:37:58,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133624181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:37:58,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:37:58,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:37:58,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104417093] [2023-08-30 15:37:58,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:37:58,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:37:58,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:37:58,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:37:58,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:37:58,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 485 [2023-08-30 15:37:58,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 75 transitions, 289 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 15:37:58,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:37:58,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 485 [2023-08-30 15:37:58,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:38:22,567 INFO L130 PetriNetUnfolder]: 227256/282613 cut-off events. [2023-08-30 15:38:22,567 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:38:23,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565041 conditions, 282613 events. 227256/282613 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19738. Compared 1799961 event pairs, 151500 based on Foata normal form. 2/86953 useless extension candidates. Maximal degree in co-relation 339005. Up to 276978 conditions per place. [2023-08-30 15:38:24,019 INFO L137 encePairwiseOnDemand]: 482/485 looper letters, 60 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-08-30 15:38:24,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 67 transitions, 357 flow [2023-08-30 15:38:24,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:38:24,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:38:24,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-08-30 15:38:24,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43711340206185567 [2023-08-30 15:38:24,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-08-30 15:38:24,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-08-30 15:38:24,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:38:24,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-08-30 15:38:24,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 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 15:38:24,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 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 15:38:24,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 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 15:38:24,028 INFO L175 Difference]: Start difference. First operand has 68 places, 75 transitions, 289 flow. Second operand 3 states and 636 transitions. [2023-08-30 15:38:24,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 67 transitions, 357 flow [2023-08-30 15:38:24,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 67 transitions, 338 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 15:38:24,032 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 218 flow [2023-08-30 15:38:24,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2023-08-30 15:38:24,033 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-08-30 15:38:24,033 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 218 flow [2023-08-30 15:38:24,034 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 15:38:24,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:38:24,034 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:38:24,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 15:38:24,035 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 15:38:24,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:38:24,035 INFO L85 PathProgramCache]: Analyzing trace with hash 948953143, now seen corresponding path program 2 times [2023-08-30 15:38:24,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:38:24,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355907488] [2023-08-30 15:38:24,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:38:24,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:38:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:38:24,163 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 15:38:24,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:38:24,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355907488] [2023-08-30 15:38:24,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355907488] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:38:24,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249173983] [2023-08-30 15:38:24,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:38:24,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:38:24,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:38:24,169 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 15:38:24,172 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 15:38:24,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:38:24,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:38:24,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:38:24,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:38:24,347 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 15:38:24,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:38:24,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249173983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:38:24,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:38:24,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:38:24,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164197476] [2023-08-30 15:38:24,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:38:24,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:38:24,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:38:24,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:38:24,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:38:24,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 485 [2023-08-30 15:38:24,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 218 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 15:38:24,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:38:24,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 485 [2023-08-30 15:38:24,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:38:48,164 INFO L130 PetriNetUnfolder]: 227256/282612 cut-off events. [2023-08-30 15:38:48,165 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 15:38:48,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565026 conditions, 282612 events. 227256/282612 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19738. Compared 1799997 event pairs, 151500 based on Foata normal form. 1/86952 useless extension candidates. Maximal degree in co-relation 565014. Up to 276972 conditions per place. [2023-08-30 15:38:49,831 INFO L137 encePairwiseOnDemand]: 482/485 looper letters, 54 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2023-08-30 15:38:49,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 328 flow [2023-08-30 15:38:49,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:38:49,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:38:49,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2023-08-30 15:38:49,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43986254295532645 [2023-08-30 15:38:49,833 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2023-08-30 15:38:49,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2023-08-30 15:38:49,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:38:49,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2023-08-30 15:38:49,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 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 15:38:49,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 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 15:38:49,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 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 15:38:49,839 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 218 flow. Second operand 3 states and 640 transitions. [2023-08-30 15:38:49,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 328 flow [2023-08-30 15:38:49,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:38:49,841 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 219 flow [2023-08-30 15:38:49,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-08-30 15:38:49,842 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-08-30 15:38:49,842 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 219 flow [2023-08-30 15:38:49,843 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 15:38:49,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:38:49,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:38:49,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 15:38:50,048 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 15:38:50,048 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 15:38:50,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:38:50,049 INFO L85 PathProgramCache]: Analyzing trace with hash 951523232, now seen corresponding path program 1 times [2023-08-30 15:38:50,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:38:50,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274454675] [2023-08-30 15:38:50,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:38:50,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:38:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:38:50,197 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 15:38:50,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:38:50,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274454675] [2023-08-30 15:38:50,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274454675] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:38:50,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:38:50,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:38:50,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041480859] [2023-08-30 15:38:50,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:38:50,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:38:50,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:38:50,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:38:50,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:38:50,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 485 [2023-08-30 15:38:50,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 219 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 15:38:50,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:38:50,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 485 [2023-08-30 15:38:50,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:16,121 INFO L130 PetriNetUnfolder]: 242156/302908 cut-off events. [2023-08-30 15:39:16,121 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 15:39:16,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605648 conditions, 302908 events. 242156/302908 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 21204. Compared 1973795 event pairs, 162500 based on Foata normal form. 0/97638 useless extension candidates. Maximal degree in co-relation 605635. Up to 276976 conditions per place. [2023-08-30 15:39:17,795 INFO L137 encePairwiseOnDemand]: 472/485 looper letters, 95 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2023-08-30 15:39:17,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 104 transitions, 526 flow [2023-08-30 15:39:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:39:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:39:17,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 858 transitions. [2023-08-30 15:39:17,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4422680412371134 [2023-08-30 15:39:17,813 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 858 transitions. [2023-08-30 15:39:17,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 858 transitions. [2023-08-30 15:39:17,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:17,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 858 transitions. [2023-08-30 15:39:17,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 214.5) internal successors, (858), 4 states have internal predecessors, (858), 0 states have call successors, (0), 0 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 15:39:17,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 485.0) internal successors, (2425), 5 states have internal predecessors, (2425), 0 states have call successors, (0), 0 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 15:39:17,820 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 485.0) internal successors, (2425), 5 states have internal predecessors, (2425), 0 states have call successors, (0), 0 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 15:39:17,820 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 219 flow. Second operand 4 states and 858 transitions. [2023-08-30 15:39:17,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 104 transitions, 526 flow [2023-08-30 15:39:17,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 104 transitions, 514 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:39:17,823 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 234 flow [2023-08-30 15:39:17,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2023-08-30 15:39:17,824 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2023-08-30 15:39:17,824 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 234 flow [2023-08-30 15:39:17,825 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 15:39:17,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:17,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:39:17,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:39:17,826 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 15:39:17,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:17,826 INFO L85 PathProgramCache]: Analyzing trace with hash -644651260, now seen corresponding path program 1 times [2023-08-30 15:39:17,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:17,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751361900] [2023-08-30 15:39:17,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:17,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:17,927 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 15:39:17,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:17,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751361900] [2023-08-30 15:39:17,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751361900] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:39:17,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341594662] [2023-08-30 15:39:17,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:17,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:17,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:39:17,929 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 15:39:17,967 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 15:39:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:18,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:39:18,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:39:18,112 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 15:39:18,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:39:18,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341594662] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:39:18,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:39:18,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 15:39:18,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625692906] [2023-08-30 15:39:18,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:39:18,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:39:18,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:18,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:39:18,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:39:18,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 485 [2023-08-30 15:39:18,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 234 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 15:39:18,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:18,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 485 [2023-08-30 15:39:18,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:38,179 INFO L130 PetriNetUnfolder]: 184981/232783 cut-off events. [2023-08-30 15:39:38,179 INFO L131 PetriNetUnfolder]: For 16631/16631 co-relation queries the response was YES. [2023-08-30 15:39:38,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528401 conditions, 232783 events. 184981/232783 cut-off events. For 16631/16631 co-relation queries the response was YES. Maximal size of possible extension queue 15765. Compared 1509353 event pairs, 125270 based on Foata normal form. 0/97032 useless extension candidates. Maximal degree in co-relation 528387. Up to 228118 conditions per place. [2023-08-30 15:39:39,884 INFO L137 encePairwiseOnDemand]: 482/485 looper letters, 57 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-08-30 15:39:39,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 342 flow [2023-08-30 15:39:39,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:39:39,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:39:39,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 645 transitions. [2023-08-30 15:39:39,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44329896907216493 [2023-08-30 15:39:39,887 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 645 transitions. [2023-08-30 15:39:39,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 645 transitions. [2023-08-30 15:39:39,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:39,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 645 transitions. [2023-08-30 15:39:39,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 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 15:39:39,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 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 15:39:39,892 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 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 15:39:39,892 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 234 flow. Second operand 3 states and 645 transitions. [2023-08-30 15:39:39,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 342 flow [2023-08-30 15:39:39,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 64 transitions, 336 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 15:39:39,958 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 222 flow [2023-08-30 15:39:39,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2023-08-30 15:39:39,962 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2023-08-30 15:39:39,962 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 222 flow [2023-08-30 15:39:39,963 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 15:39:39,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:39,963 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:39:39,970 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 15:39:40,168 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 15:39:40,169 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 15:39:40,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:40,170 INFO L85 PathProgramCache]: Analyzing trace with hash -574694134, now seen corresponding path program 1 times [2023-08-30 15:39:40,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:40,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565064901] [2023-08-30 15:39:40,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:40,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:40,342 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 15:39:40,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:40,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565064901] [2023-08-30 15:39:40,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565064901] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:39:40,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164943446] [2023-08-30 15:39:40,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:40,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:40,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:39:40,353 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 15:39:40,413 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 15:39:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:40,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:39:40,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:39:40,633 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 15:39:40,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:39:40,684 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 15:39:40,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164943446] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:39:40,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:39:40,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 15:39:40,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407905190] [2023-08-30 15:39:40,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:39:40,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:39:40,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:40,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:39:40,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:39:40,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 485 [2023-08-30 15:39:40,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 222 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 15:39:40,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:40,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 485 [2023-08-30 15:39:40,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand