./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.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-vector-add.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 f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --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 15:41:26,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:41:26,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:41:26,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:41:26,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:41:26,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:41:26,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:41:26,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:41:26,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:41:26,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:41:26,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:41:26,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:41:26,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:41:26,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:41:26,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:41:26,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:41:26,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:41:26,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:41:26,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:41:26,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:41:26,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:41:26,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:41:26,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:41:26,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:41:26,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:41:26,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:41:26,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:41:26,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:41:26,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:41:26,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:41:26,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:41:26,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:41:26,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:41:26,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:41:26,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:41:26,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:41:26,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:41:26,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:41:26,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:41:26,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:41:26,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:41:26,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:41:26,835 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:41:26,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:41:26,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:41:26,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:41:26,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:41:26,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:41:26,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:41:26,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:41:26,839 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:41:26,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:41:26,840 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:41:26,840 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:41:26,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:41:26,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:41:26,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:41:26,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:41:26,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:41:26,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:41:26,841 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:41:26,842 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:41:26,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:41:26,842 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:41:26,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:41:26,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:41:26,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:41:26,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:41:26,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:41:26,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:41:26,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:41:26,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:41:26,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:41:26,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:41:26,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:41:26,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:41:26,845 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:41:26,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:41:26,845 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:41:26,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:41:27,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:41:27,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:41:27,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:41:27,165 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:41:27,165 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:41:27,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-08-30 15:41:28,351 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:41:28,554 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:41:28,554 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-08-30 15:41:28,562 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/125832be3/c2d4b2ca27064edda466acea0af86c97/FLAGe3d8dc22a [2023-08-30 15:41:28,573 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/125832be3/c2d4b2ca27064edda466acea0af86c97 [2023-08-30 15:41:28,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:41:28,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:41:28,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:41:28,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:41:28,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:41:28,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:41:28" (1/1) ... [2023-08-30 15:41:28,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1165de1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:28, skipping insertion in model container [2023-08-30 15:41:28,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:41:28" (1/1) ... [2023-08-30 15:41:28,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:41:28,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:41:28,743 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-vector-add.wvr.c[2598,2611] [2023-08-30 15:41:28,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:41:28,761 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:41:28,795 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-vector-add.wvr.c[2598,2611] [2023-08-30 15:41:28,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:41:28,816 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:41:28,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:28 WrapperNode [2023-08-30 15:41:28,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:41:28,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:41:28,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:41:28,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:41:28,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:28" (1/1) ... [2023-08-30 15:41:28,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:28" (1/1) ... [2023-08-30 15:41:28,876 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 208 [2023-08-30 15:41:28,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:41:28,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:41:28,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:41:28,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:41:28,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:28" (1/1) ... [2023-08-30 15:41:28,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:28" (1/1) ... [2023-08-30 15:41:28,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:28" (1/1) ... [2023-08-30 15:41:28,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:28" (1/1) ... [2023-08-30 15:41:28,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:28" (1/1) ... [2023-08-30 15:41:28,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:28" (1/1) ... [2023-08-30 15:41:28,925 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:28" (1/1) ... [2023-08-30 15:41:28,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:28" (1/1) ... [2023-08-30 15:41:28,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:41:28,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:41:28,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:41:28,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:41:28,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:28" (1/1) ... [2023-08-30 15:41:28,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:41:28,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:28,986 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 15:41:29,019 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 15:41:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:41:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:41:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:41:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:41:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:41:29,034 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:41:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:41:29,034 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:41:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:41:29,034 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:41:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:41:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:41:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:41:29,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:41:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:41:29,036 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 15:41:29,157 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:41:29,158 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:41:29,492 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:41:29,503 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:41:29,503 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-30 15:41:29,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:41:29 BoogieIcfgContainer [2023-08-30 15:41:29,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:41:29,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:41:29,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:41:29,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:41:29,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:41:28" (1/3) ... [2023-08-30 15:41:29,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae3a6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:41:29, skipping insertion in model container [2023-08-30 15:41:29,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:28" (2/3) ... [2023-08-30 15:41:29,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae3a6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:41:29, skipping insertion in model container [2023-08-30 15:41:29,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:41:29" (3/3) ... [2023-08-30 15:41:29,511 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2023-08-30 15:41:29,517 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:41:29,525 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:41:29,525 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 15:41:29,526 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:41:29,641 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:41:29,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 299 transitions, 622 flow [2023-08-30 15:41:29,763 INFO L130 PetriNetUnfolder]: 25/296 cut-off events. [2023-08-30 15:41:29,764 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:41:29,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 296 events. 25/296 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 278 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 239. Up to 2 conditions per place. [2023-08-30 15:41:29,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 299 transitions, 622 flow [2023-08-30 15:41:29,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 263 transitions, 541 flow [2023-08-30 15:41:29,783 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:41:29,797 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 263 transitions, 541 flow [2023-08-30 15:41:29,800 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 263 transitions, 541 flow [2023-08-30 15:41:29,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 263 transitions, 541 flow [2023-08-30 15:41:29,858 INFO L130 PetriNetUnfolder]: 23/263 cut-off events. [2023-08-30 15:41:29,858 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:41:29,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 263 events. 23/263 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 273 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 239. Up to 2 conditions per place. [2023-08-30 15:41:29,861 INFO L119 LiptonReduction]: Number of co-enabled transitions 3240 [2023-08-30 15:41:36,898 INFO L134 LiptonReduction]: Checked pairs total: 7233 [2023-08-30 15:41:36,898 INFO L136 LiptonReduction]: Total number of compositions: 285 [2023-08-30 15:41:36,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:41:36,915 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;@517ea08a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:41:36,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-30 15:41:36,918 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:41:36,918 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:41:36,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:36,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:41:36,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:41:36,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:36,923 INFO L85 PathProgramCache]: Analyzing trace with hash 34577, now seen corresponding path program 1 times [2023-08-30 15:41:36,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:36,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614036472] [2023-08-30 15:41:36,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:36,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:37,219 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 15:41:37,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:37,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614036472] [2023-08-30 15:41:37,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614036472] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:37,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:37,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:41:37,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44204843] [2023-08-30 15:41:37,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:37,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:37,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:37,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:37,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:37,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 584 [2023-08-30 15:41:37,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:37,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:37,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 584 [2023-08-30 15:41:37,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:37,831 INFO L130 PetriNetUnfolder]: 3070/4355 cut-off events. [2023-08-30 15:41:37,831 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-08-30 15:41:37,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8837 conditions, 4355 events. 3070/4355 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 23724 event pairs, 2068 based on Foata normal form. 0/2238 useless extension candidates. Maximal degree in co-relation 3838. Up to 2121 conditions per place. [2023-08-30 15:41:37,860 INFO L137 encePairwiseOnDemand]: 568/584 looper letters, 67 selfloop transitions, 8 changer transitions 0/81 dead transitions. [2023-08-30 15:41:37,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 342 flow [2023-08-30 15:41:37,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:37,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 869 transitions. [2023-08-30 15:41:37,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4960045662100457 [2023-08-30 15:41:37,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 869 transitions. [2023-08-30 15:41:37,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 869 transitions. [2023-08-30 15:41:37,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:37,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 869 transitions. [2023-08-30 15:41:37,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:37,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:37,900 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:37,901 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 111 flow. Second operand 3 states and 869 transitions. [2023-08-30 15:41:37,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 342 flow [2023-08-30 15:41:37,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 81 transitions, 324 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:41:37,917 INFO L231 Difference]: Finished difference. Result has 50 places, 55 transitions, 178 flow [2023-08-30 15:41:37,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=50, PETRI_TRANSITIONS=55} [2023-08-30 15:41:37,922 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-08-30 15:41:37,922 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 55 transitions, 178 flow [2023-08-30 15:41:37,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:37,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:37,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:41:37,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:41:37,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:41:37,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:37,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1073294, now seen corresponding path program 1 times [2023-08-30 15:41:37,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:37,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584571758] [2023-08-30 15:41:37,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:37,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:37,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:37,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584571758] [2023-08-30 15:41:37,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584571758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:37,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:37,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:37,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289248043] [2023-08-30 15:41:37,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:37,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:37,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:37,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:37,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:38,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 584 [2023-08-30 15:41:38,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 55 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:38,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:38,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 584 [2023-08-30 15:41:38,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:38,378 INFO L130 PetriNetUnfolder]: 3095/4371 cut-off events. [2023-08-30 15:41:38,378 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-30 15:41:38,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8807 conditions, 4371 events. 3095/4371 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 23797 event pairs, 2078 based on Foata normal form. 0/2227 useless extension candidates. Maximal degree in co-relation 4378. Up to 4247 conditions per place. [2023-08-30 15:41:38,399 INFO L137 encePairwiseOnDemand]: 579/584 looper letters, 44 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-08-30 15:41:38,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 252 flow [2023-08-30 15:41:38,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:38,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:38,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 828 transitions. [2023-08-30 15:41:38,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2023-08-30 15:41:38,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 828 transitions. [2023-08-30 15:41:38,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 828 transitions. [2023-08-30 15:41:38,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:38,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 828 transitions. [2023-08-30 15:41:38,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.0) internal successors, (828), 3 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:38,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:38,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:38,409 INFO L175 Difference]: Start difference. First operand has 50 places, 55 transitions, 178 flow. Second operand 3 states and 828 transitions. [2023-08-30 15:41:38,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 252 flow [2023-08-30 15:41:38,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:41:38,412 INFO L231 Difference]: Finished difference. Result has 46 places, 51 transitions, 148 flow [2023-08-30 15:41:38,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=46, PETRI_TRANSITIONS=51} [2023-08-30 15:41:38,413 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2023-08-30 15:41:38,413 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 51 transitions, 148 flow [2023-08-30 15:41:38,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:38,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:38,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:41:38,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:41:38,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:41:38,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:38,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1073308, now seen corresponding path program 1 times [2023-08-30 15:41:38,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:38,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505096003] [2023-08-30 15:41:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:38,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:38,515 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 15:41:38,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:38,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505096003] [2023-08-30 15:41:38,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505096003] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:38,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165710933] [2023-08-30 15:41:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:38,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:38,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:38,525 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 15:41:38,548 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 15:41:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:38,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:41:38,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:38,642 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 15:41:38,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:38,656 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 15:41:38,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165710933] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:38,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:38,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:41:38,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87934782] [2023-08-30 15:41:38,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:38,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:41:38,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:38,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:41:38,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:41:38,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 584 [2023-08-30 15:41:38,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 51 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 263.14285714285717) internal successors, (1842), 7 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:38,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:38,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 584 [2023-08-30 15:41:38,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:39,875 INFO L130 PetriNetUnfolder]: 7636/10840 cut-off events. [2023-08-30 15:41:39,877 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-08-30 15:41:39,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21770 conditions, 10840 events. 7636/10840 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 67119 event pairs, 5155 based on Foata normal form. 0/5699 useless extension candidates. Maximal degree in co-relation 21762. Up to 2130 conditions per place. [2023-08-30 15:41:39,934 INFO L137 encePairwiseOnDemand]: 572/584 looper letters, 141 selfloop transitions, 29 changer transitions 0/176 dead transitions. [2023-08-30 15:41:39,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 176 transitions, 804 flow [2023-08-30 15:41:39,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:41:39,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:41:39,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1754 transitions. [2023-08-30 15:41:39,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005707762557078 [2023-08-30 15:41:39,939 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1754 transitions. [2023-08-30 15:41:39,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1754 transitions. [2023-08-30 15:41:39,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:39,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1754 transitions. [2023-08-30 15:41:39,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 292.3333333333333) internal successors, (1754), 6 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:39,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:39,950 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:39,951 INFO L175 Difference]: Start difference. First operand has 46 places, 51 transitions, 148 flow. Second operand 6 states and 1754 transitions. [2023-08-30 15:41:39,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 176 transitions, 804 flow [2023-08-30 15:41:39,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 176 transitions, 803 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:39,954 INFO L231 Difference]: Finished difference. Result has 53 places, 72 transitions, 354 flow [2023-08-30 15:41:39,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=354, PETRI_PLACES=53, PETRI_TRANSITIONS=72} [2023-08-30 15:41:39,955 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-08-30 15:41:39,955 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 72 transitions, 354 flow [2023-08-30 15:41:39,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 263.14285714285717) internal successors, (1842), 7 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:39,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:39,957 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:41:39,963 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 15:41:40,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:40,163 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:41:40,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:40,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1911127647, now seen corresponding path program 2 times [2023-08-30 15:41:40,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:40,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278115215] [2023-08-30 15:41:40,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:40,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:40,271 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 15:41:40,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:40,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278115215] [2023-08-30 15:41:40,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278115215] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:40,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633524500] [2023-08-30 15:41:40,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:41:40,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:40,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:40,275 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 15:41:40,277 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 15:41:40,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:41:40,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:41:40,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:41:40,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:40,366 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 15:41:40,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:41:40,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633524500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:40,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:41:40,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:41:40,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217637349] [2023-08-30 15:41:40,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:40,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:40,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:40,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:40,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:41:40,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 584 [2023-08-30 15:41:40,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 72 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:40,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:40,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 584 [2023-08-30 15:41:40,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:41,185 INFO L130 PetriNetUnfolder]: 7736/10919 cut-off events. [2023-08-30 15:41:41,186 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-08-30 15:41:41,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22033 conditions, 10919 events. 7736/10919 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 67117 event pairs, 5195 based on Foata normal form. 1/5564 useless extension candidates. Maximal degree in co-relation 22021. Up to 10604 conditions per place. [2023-08-30 15:41:41,240 INFO L137 encePairwiseOnDemand]: 581/584 looper letters, 59 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2023-08-30 15:41:41,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 474 flow [2023-08-30 15:41:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:41,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 836 transitions. [2023-08-30 15:41:41,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4771689497716895 [2023-08-30 15:41:41,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 836 transitions. [2023-08-30 15:41:41,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 836 transitions. [2023-08-30 15:41:41,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:41,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 836 transitions. [2023-08-30 15:41:41,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:41,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:41,249 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:41,249 INFO L175 Difference]: Start difference. First operand has 53 places, 72 transitions, 354 flow. Second operand 3 states and 836 transitions. [2023-08-30 15:41:41,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 474 flow [2023-08-30 15:41:41,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 71 transitions, 433 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:41,256 INFO L231 Difference]: Finished difference. Result has 53 places, 71 transitions, 315 flow [2023-08-30 15:41:41,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=53, PETRI_TRANSITIONS=71} [2023-08-30 15:41:41,257 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-08-30 15:41:41,257 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 71 transitions, 315 flow [2023-08-30 15:41:41,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:41,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:41,258 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:41:41,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:41:41,463 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 15:41:41,463 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:41:41,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:41,464 INFO L85 PathProgramCache]: Analyzing trace with hash 57314924, now seen corresponding path program 1 times [2023-08-30 15:41:41,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:41,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281202109] [2023-08-30 15:41:41,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:41,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:41,606 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:41:41,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:41,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281202109] [2023-08-30 15:41:41,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281202109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:41,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:41,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:41:41,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706333113] [2023-08-30 15:41:41,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:41,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:41:41,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:41,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:41:41,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:41:41,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 584 [2023-08-30 15:41:41,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 71 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 253.25) internal successors, (1013), 4 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:41,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:41,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 584 [2023-08-30 15:41:41,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:42,455 INFO L130 PetriNetUnfolder]: 7636/10842 cut-off events. [2023-08-30 15:41:42,456 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-08-30 15:41:42,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21823 conditions, 10842 events. 7636/10842 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 66000 event pairs, 5155 based on Foata normal form. 3/5793 useless extension candidates. Maximal degree in co-relation 21810. Up to 8360 conditions per place. [2023-08-30 15:41:42,503 INFO L137 encePairwiseOnDemand]: 575/584 looper letters, 73 selfloop transitions, 21 changer transitions 0/100 dead transitions. [2023-08-30 15:41:42,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 100 transitions, 571 flow [2023-08-30 15:41:42,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:41:42,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:41:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1084 transitions. [2023-08-30 15:41:42,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.464041095890411 [2023-08-30 15:41:42,507 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1084 transitions. [2023-08-30 15:41:42,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1084 transitions. [2023-08-30 15:41:42,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:42,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1084 transitions. [2023-08-30 15:41:42,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:42,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:42,515 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:42,515 INFO L175 Difference]: Start difference. First operand has 53 places, 71 transitions, 315 flow. Second operand 4 states and 1084 transitions. [2023-08-30 15:41:42,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 100 transitions, 571 flow [2023-08-30 15:41:42,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 100 transitions, 559 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:41:42,518 INFO L231 Difference]: Finished difference. Result has 55 places, 74 transitions, 382 flow [2023-08-30 15:41:42,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=382, PETRI_PLACES=55, PETRI_TRANSITIONS=74} [2023-08-30 15:41:42,519 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-08-30 15:41:42,519 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 74 transitions, 382 flow [2023-08-30 15:41:42,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 253.25) internal successors, (1013), 4 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:42,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:42,520 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 15:41:42,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:41:42,520 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:41:42,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:42,521 INFO L85 PathProgramCache]: Analyzing trace with hash -710403313, now seen corresponding path program 1 times [2023-08-30 15:41:42,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:42,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618052449] [2023-08-30 15:41:42,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:42,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:42,692 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:41:42,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:42,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618052449] [2023-08-30 15:41:42,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618052449] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:42,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410319303] [2023-08-30 15:41:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:42,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:42,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:42,695 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 15:41:42,698 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 15:41:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:42,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 15:41:42,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:41:42,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:42,883 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:41:42,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410319303] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:42,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:42,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-08-30 15:41:42,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674103342] [2023-08-30 15:41:42,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:42,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:41:42,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:42,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:41:42,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:41:43,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 584 [2023-08-30 15:41:43,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 74 transitions, 382 flow. Second operand has 14 states, 14 states have (on average 249.28571428571428) internal successors, (3490), 14 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:43,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:43,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 584 [2023-08-30 15:41:43,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:44,600 INFO L130 PetriNetUnfolder]: 9157/13006 cut-off events. [2023-08-30 15:41:44,600 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2023-08-30 15:41:44,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26216 conditions, 13006 events. 9157/13006 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 78734 event pairs, 6184 based on Foata normal form. 3/6964 useless extension candidates. Maximal degree in co-relation 26202. Up to 6252 conditions per place. [2023-08-30 15:41:44,653 INFO L137 encePairwiseOnDemand]: 572/584 looper letters, 116 selfloop transitions, 38 changer transitions 0/160 dead transitions. [2023-08-30 15:41:44,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 160 transitions, 934 flow [2023-08-30 15:41:44,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 15:41:44,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 15:41:44,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2623 transitions. [2023-08-30 15:41:44,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44914383561643834 [2023-08-30 15:41:44,660 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2623 transitions. [2023-08-30 15:41:44,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2623 transitions. [2023-08-30 15:41:44,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:44,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2623 transitions. [2023-08-30 15:41:44,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 262.3) internal successors, (2623), 10 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:44,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 584.0) internal successors, (6424), 11 states have internal predecessors, (6424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:44,675 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 584.0) internal successors, (6424), 11 states have internal predecessors, (6424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:44,676 INFO L175 Difference]: Start difference. First operand has 55 places, 74 transitions, 382 flow. Second operand 10 states and 2623 transitions. [2023-08-30 15:41:44,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 160 transitions, 934 flow [2023-08-30 15:41:44,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 160 transitions, 902 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:44,679 INFO L231 Difference]: Finished difference. Result has 65 places, 84 transitions, 532 flow [2023-08-30 15:41:44,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=532, PETRI_PLACES=65, PETRI_TRANSITIONS=84} [2023-08-30 15:41:44,680 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2023-08-30 15:41:44,680 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 84 transitions, 532 flow [2023-08-30 15:41:44,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 249.28571428571428) internal successors, (3490), 14 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:44,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:44,682 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-30 15:41:44,688 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 15:41:44,882 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 15:41:44,882 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:41:44,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:44,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1260135116, now seen corresponding path program 2 times [2023-08-30 15:41:44,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:44,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051228999] [2023-08-30 15:41:44,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:44,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:41:45,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:45,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051228999] [2023-08-30 15:41:45,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051228999] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:45,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744553530] [2023-08-30 15:41:45,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:41:45,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:45,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:45,032 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 15:41:45,057 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 15:41:45,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:41:45,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:41:45,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:41:45,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 15:41:45,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:41:45,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744553530] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:45,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:41:45,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-30 15:41:45,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745608410] [2023-08-30 15:41:45,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:45,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:41:45,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:45,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:41:45,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 15:41:45,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 584 [2023-08-30 15:41:45,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 84 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 265.25) internal successors, (1061), 4 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:45,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:45,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 584 [2023-08-30 15:41:45,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:45,926 INFO L130 PetriNetUnfolder]: 9282/13103 cut-off events. [2023-08-30 15:41:45,926 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2023-08-30 15:41:45,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26499 conditions, 13103 events. 9282/13103 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 79406 event pairs, 6234 based on Foata normal form. 3/6686 useless extension candidates. Maximal degree in co-relation 26482. Up to 12731 conditions per place. [2023-08-30 15:41:45,985 INFO L137 encePairwiseOnDemand]: 580/584 looper letters, 74 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-08-30 15:41:45,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 81 transitions, 643 flow [2023-08-30 15:41:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 829 transitions. [2023-08-30 15:41:45,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731735159817352 [2023-08-30 15:41:45,989 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 829 transitions. [2023-08-30 15:41:45,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 829 transitions. [2023-08-30 15:41:45,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:45,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 829 transitions. [2023-08-30 15:41:45,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:45,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:45,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:45,995 INFO L175 Difference]: Start difference. First operand has 65 places, 84 transitions, 532 flow. Second operand 3 states and 829 transitions. [2023-08-30 15:41:45,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 81 transitions, 643 flow [2023-08-30 15:41:45,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 526 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-30 15:41:46,000 INFO L231 Difference]: Finished difference. Result has 57 places, 81 transitions, 378 flow [2023-08-30 15:41:46,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=57, PETRI_TRANSITIONS=81} [2023-08-30 15:41:46,001 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2023-08-30 15:41:46,001 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 81 transitions, 378 flow [2023-08-30 15:41:46,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.25) internal successors, (1061), 4 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:46,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:46,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:46,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:41:46,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:46,207 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:41:46,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:46,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1302289154, now seen corresponding path program 1 times [2023-08-30 15:41:46,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:46,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687778707] [2023-08-30 15:41:46,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:46,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:46,270 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 15:41:46,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:46,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687778707] [2023-08-30 15:41:46,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687778707] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:46,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:46,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:46,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785449410] [2023-08-30 15:41:46,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:46,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:46,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:46,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:46,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:46,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 584 [2023-08-30 15:41:46,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 81 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:46,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:46,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 584 [2023-08-30 15:41:46,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:47,373 INFO L130 PetriNetUnfolder]: 14424/21035 cut-off events. [2023-08-30 15:41:47,373 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-08-30 15:41:47,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41911 conditions, 21035 events. 14424/21035 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 143594 event pairs, 6582 based on Foata normal form. 0/12047 useless extension candidates. Maximal degree in co-relation 41897. Up to 12756 conditions per place. [2023-08-30 15:41:47,438 INFO L137 encePairwiseOnDemand]: 580/584 looper letters, 96 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2023-08-30 15:41:47,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 103 transitions, 623 flow [2023-08-30 15:41:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:47,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:47,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 875 transitions. [2023-08-30 15:41:47,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4994292237442922 [2023-08-30 15:41:47,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 875 transitions. [2023-08-30 15:41:47,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 875 transitions. [2023-08-30 15:41:47,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:47,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 875 transitions. [2023-08-30 15:41:47,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.6666666666667) internal successors, (875), 3 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:47,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:47,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:47,448 INFO L175 Difference]: Start difference. First operand has 57 places, 81 transitions, 378 flow. Second operand 3 states and 875 transitions. [2023-08-30 15:41:47,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 103 transitions, 623 flow [2023-08-30 15:41:47,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 103 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:47,451 INFO L231 Difference]: Finished difference. Result has 59 places, 82 transitions, 391 flow [2023-08-30 15:41:47,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=59, PETRI_TRANSITIONS=82} [2023-08-30 15:41:47,452 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2023-08-30 15:41:47,452 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 82 transitions, 391 flow [2023-08-30 15:41:47,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:47,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:47,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:47,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 15:41:47,453 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:41:47,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:47,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1618201434, now seen corresponding path program 1 times [2023-08-30 15:41:47,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:47,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314333094] [2023-08-30 15:41:47,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:47,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:47,496 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 15:41:47,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:47,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314333094] [2023-08-30 15:41:47,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314333094] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:47,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:47,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:47,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924200177] [2023-08-30 15:41:47,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:47,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:47,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:47,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:47,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:47,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 584 [2023-08-30 15:41:47,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 82 transitions, 391 flow. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:47,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:47,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 584 [2023-08-30 15:41:47,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:49,096 INFO L130 PetriNetUnfolder]: 18384/27617 cut-off events. [2023-08-30 15:41:49,096 INFO L131 PetriNetUnfolder]: For 2054/2054 co-relation queries the response was YES. [2023-08-30 15:41:49,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58502 conditions, 27617 events. 18384/27617 cut-off events. For 2054/2054 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 203265 event pairs, 9462 based on Foata normal form. 0/16751 useless extension candidates. Maximal degree in co-relation 58487. Up to 17220 conditions per place. [2023-08-30 15:41:49,452 INFO L137 encePairwiseOnDemand]: 580/584 looper letters, 96 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2023-08-30 15:41:49,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 103 transitions, 642 flow [2023-08-30 15:41:49,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:49,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:49,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2023-08-30 15:41:49,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4982876712328767 [2023-08-30 15:41:49,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2023-08-30 15:41:49,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2023-08-30 15:41:49,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:49,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2023-08-30 15:41:49,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:49,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:49,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:49,460 INFO L175 Difference]: Start difference. First operand has 59 places, 82 transitions, 391 flow. Second operand 3 states and 873 transitions. [2023-08-30 15:41:49,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 103 transitions, 642 flow [2023-08-30 15:41:49,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 103 transitions, 639 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:49,464 INFO L231 Difference]: Finished difference. Result has 61 places, 83 transitions, 403 flow [2023-08-30 15:41:49,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=403, PETRI_PLACES=61, PETRI_TRANSITIONS=83} [2023-08-30 15:41:49,465 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2023-08-30 15:41:49,465 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 83 transitions, 403 flow [2023-08-30 15:41:49,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:49,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:49,466 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:49,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 15:41:49,467 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:41:49,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:49,467 INFO L85 PathProgramCache]: Analyzing trace with hash 57525530, now seen corresponding path program 1 times [2023-08-30 15:41:49,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:49,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047645215] [2023-08-30 15:41:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:49,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:49,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:49,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047645215] [2023-08-30 15:41:49,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047645215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:49,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:49,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:49,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453695897] [2023-08-30 15:41:49,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:49,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:49,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:49,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:49,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:49,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 584 [2023-08-30 15:41:49,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 83 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:49,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:49,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 584 [2023-08-30 15:41:49,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:51,013 INFO L130 PetriNetUnfolder]: 16674/25019 cut-off events. [2023-08-30 15:41:51,013 INFO L131 PetriNetUnfolder]: For 3662/3662 co-relation queries the response was YES. [2023-08-30 15:41:51,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56355 conditions, 25019 events. 16674/25019 cut-off events. For 3662/3662 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 185589 event pairs, 876 based on Foata normal form. 0/15593 useless extension candidates. Maximal degree in co-relation 56339. Up to 21900 conditions per place. [2023-08-30 15:41:51,113 INFO L137 encePairwiseOnDemand]: 582/584 looper letters, 92 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2023-08-30 15:41:51,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 98 transitions, 629 flow [2023-08-30 15:41:51,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:51,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:51,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 866 transitions. [2023-08-30 15:41:51,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942922374429224 [2023-08-30 15:41:51,117 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 866 transitions. [2023-08-30 15:41:51,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 866 transitions. [2023-08-30 15:41:51,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:51,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 866 transitions. [2023-08-30 15:41:51,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 288.6666666666667) internal successors, (866), 3 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:51,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:51,122 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:51,122 INFO L175 Difference]: Start difference. First operand has 61 places, 83 transitions, 403 flow. Second operand 3 states and 866 transitions. [2023-08-30 15:41:51,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 98 transitions, 629 flow [2023-08-30 15:41:51,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 98 transitions, 626 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:51,129 INFO L231 Difference]: Finished difference. Result has 61 places, 82 transitions, 399 flow [2023-08-30 15:41:51,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=399, PETRI_PLACES=61, PETRI_TRANSITIONS=82} [2023-08-30 15:41:51,129 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2023-08-30 15:41:51,130 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 82 transitions, 399 flow [2023-08-30 15:41:51,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:51,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:51,130 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:51,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 15:41:51,131 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:41:51,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:51,131 INFO L85 PathProgramCache]: Analyzing trace with hash 57525531, now seen corresponding path program 1 times [2023-08-30 15:41:51,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:51,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488511257] [2023-08-30 15:41:51,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:51,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:51,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:51,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488511257] [2023-08-30 15:41:51,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488511257] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:51,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247949668] [2023-08-30 15:41:51,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:51,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:51,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:51,189 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:41:51,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:41:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:51,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:41:51,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:41:51,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:41:51,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247949668] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:51,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:41:51,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 15:41:51,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960781054] [2023-08-30 15:41:51,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:51,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:41:51,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:51,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:41:51,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:41:51,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 584 [2023-08-30 15:41:51,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 82 transitions, 399 flow. Second operand has 5 states, 5 states have (on average 255.2) internal successors, (1276), 5 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:51,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:51,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 584 [2023-08-30 15:41:51,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:52,798 INFO L130 PetriNetUnfolder]: 13679/20449 cut-off events. [2023-08-30 15:41:52,798 INFO L131 PetriNetUnfolder]: For 4443/4443 co-relation queries the response was YES. [2023-08-30 15:41:52,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46615 conditions, 20449 events. 13679/20449 cut-off events. For 4443/4443 co-relation queries the response was YES. Maximal size of possible extension queue 926. Compared 143409 event pairs, 10281 based on Foata normal form. 0/12748 useless extension candidates. Maximal degree in co-relation 46599. Up to 18154 conditions per place. [2023-08-30 15:41:52,866 INFO L137 encePairwiseOnDemand]: 573/584 looper letters, 87 selfloop transitions, 30 changer transitions 0/122 dead transitions. [2023-08-30 15:41:52,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 122 transitions, 748 flow [2023-08-30 15:41:52,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:41:52,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:41:52,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1348 transitions. [2023-08-30 15:41:52,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46164383561643835 [2023-08-30 15:41:52,869 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1348 transitions. [2023-08-30 15:41:52,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1348 transitions. [2023-08-30 15:41:52,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:52,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1348 transitions. [2023-08-30 15:41:52,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.6) internal successors, (1348), 5 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:52,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 584.0) internal successors, (3504), 6 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:52,876 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 584.0) internal successors, (3504), 6 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:52,876 INFO L175 Difference]: Start difference. First operand has 61 places, 82 transitions, 399 flow. Second operand 5 states and 1348 transitions. [2023-08-30 15:41:52,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 122 transitions, 748 flow [2023-08-30 15:41:52,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 122 transitions, 746 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:52,882 INFO L231 Difference]: Finished difference. Result has 66 places, 83 transitions, 476 flow [2023-08-30 15:41:52,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=66, PETRI_TRANSITIONS=83} [2023-08-30 15:41:52,882 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2023-08-30 15:41:52,883 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 83 transitions, 476 flow [2023-08-30 15:41:52,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 255.2) internal successors, (1276), 5 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:52,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:52,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:52,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:41:53,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 15:41:53,089 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:41:53,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:53,089 INFO L85 PathProgramCache]: Analyzing trace with hash -685852427, now seen corresponding path program 1 times [2023-08-30 15:41:53,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:53,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675333834] [2023-08-30 15:41:53,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:53,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:53,155 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 15:41:53,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:53,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675333834] [2023-08-30 15:41:53,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675333834] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:53,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:53,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:53,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590368986] [2023-08-30 15:41:53,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:53,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:41:53,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:53,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:41:53,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:41:53,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 584 [2023-08-30 15:41:53,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 83 transitions, 476 flow. Second operand has 4 states, 4 states have (on average 273.25) internal successors, (1093), 4 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:53,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:53,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 584 [2023-08-30 15:41:53,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:54,214 INFO L130 PetriNetUnfolder]: 10564/16453 cut-off events. [2023-08-30 15:41:54,215 INFO L131 PetriNetUnfolder]: For 3534/3631 co-relation queries the response was YES. [2023-08-30 15:41:54,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37287 conditions, 16453 events. 10564/16453 cut-off events. For 3534/3631 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 119580 event pairs, 1954 based on Foata normal form. 97/12124 useless extension candidates. Maximal degree in co-relation 37268. Up to 11500 conditions per place. [2023-08-30 15:41:54,273 INFO L137 encePairwiseOnDemand]: 581/584 looper letters, 90 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-08-30 15:41:54,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 98 transitions, 708 flow [2023-08-30 15:41:54,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:41:54,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:41:54,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1128 transitions. [2023-08-30 15:41:54,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4828767123287671 [2023-08-30 15:41:54,276 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1128 transitions. [2023-08-30 15:41:54,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1128 transitions. [2023-08-30 15:41:54,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:54,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1128 transitions. [2023-08-30 15:41:54,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:54,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:54,282 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:54,283 INFO L175 Difference]: Start difference. First operand has 66 places, 83 transitions, 476 flow. Second operand 4 states and 1128 transitions. [2023-08-30 15:41:54,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 98 transitions, 708 flow [2023-08-30 15:41:54,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 98 transitions, 657 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:41:54,290 INFO L231 Difference]: Finished difference. Result has 66 places, 82 transitions, 427 flow [2023-08-30 15:41:54,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=427, PETRI_PLACES=66, PETRI_TRANSITIONS=82} [2023-08-30 15:41:54,291 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2023-08-30 15:41:54,291 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 82 transitions, 427 flow [2023-08-30 15:41:54,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 273.25) internal successors, (1093), 4 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:54,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:54,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:54,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 15:41:54,293 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:41:54,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:54,293 INFO L85 PathProgramCache]: Analyzing trace with hash -685852429, now seen corresponding path program 1 times [2023-08-30 15:41:54,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:54,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193174940] [2023-08-30 15:41:54,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:54,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:54,373 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 15:41:54,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:54,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193174940] [2023-08-30 15:41:54,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193174940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:54,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:54,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:41:54,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351596525] [2023-08-30 15:41:54,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:54,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:41:54,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:54,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:41:54,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:41:54,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 584 [2023-08-30 15:41:54,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 82 transitions, 427 flow. Second operand has 5 states, 5 states have (on average 254.6) internal successors, (1273), 5 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:54,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:54,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 584 [2023-08-30 15:41:54,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:55,761 INFO L130 PetriNetUnfolder]: 10464/15946 cut-off events. [2023-08-30 15:41:55,761 INFO L131 PetriNetUnfolder]: For 3937/4018 co-relation queries the response was YES. [2023-08-30 15:41:55,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37390 conditions, 15946 events. 10464/15946 cut-off events. For 3937/4018 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 111231 event pairs, 8502 based on Foata normal form. 81/11730 useless extension candidates. Maximal degree in co-relation 37371. Up to 14454 conditions per place. [2023-08-30 15:41:55,821 INFO L137 encePairwiseOnDemand]: 572/584 looper letters, 73 selfloop transitions, 31 changer transitions 6/116 dead transitions. [2023-08-30 15:41:55,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 116 transitions, 747 flow [2023-08-30 15:41:55,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:41:55,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:41:55,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1336 transitions. [2023-08-30 15:41:55,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4575342465753425 [2023-08-30 15:41:55,825 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1336 transitions. [2023-08-30 15:41:55,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1336 transitions. [2023-08-30 15:41:55,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:55,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1336 transitions. [2023-08-30 15:41:55,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 267.2) internal successors, (1336), 5 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:55,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 584.0) internal successors, (3504), 6 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:55,831 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 584.0) internal successors, (3504), 6 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:55,831 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 427 flow. Second operand 5 states and 1336 transitions. [2023-08-30 15:41:55,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 116 transitions, 747 flow [2023-08-30 15:41:55,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 116 transitions, 743 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:41:55,879 INFO L231 Difference]: Finished difference. Result has 70 places, 84 transitions, 507 flow [2023-08-30 15:41:55,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=507, PETRI_PLACES=70, PETRI_TRANSITIONS=84} [2023-08-30 15:41:55,879 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 19 predicate places. [2023-08-30 15:41:55,880 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 84 transitions, 507 flow [2023-08-30 15:41:55,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 254.6) internal successors, (1273), 5 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:55,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:55,880 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:55,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 15:41:55,880 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:41:55,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:55,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1128676485, now seen corresponding path program 1 times [2023-08-30 15:41:55,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:55,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980510851] [2023-08-30 15:41:55,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:55,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:55,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:55,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980510851] [2023-08-30 15:41:55,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980510851] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:55,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562761378] [2023-08-30 15:41:55,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:55,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:55,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:55,933 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:41:55,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:41:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:56,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:41:56,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:56,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:56,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:56,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562761378] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:56,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:56,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 15:41:56,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663671783] [2023-08-30 15:41:56,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:56,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:41:56,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:56,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:41:56,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:41:56,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 584 [2023-08-30 15:41:56,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 84 transitions, 507 flow. Second operand has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:56,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:56,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 584 [2023-08-30 15:41:56,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:58,673 INFO L130 PetriNetUnfolder]: 26719/39993 cut-off events. [2023-08-30 15:41:58,674 INFO L131 PetriNetUnfolder]: For 14131/14310 co-relation queries the response was YES. [2023-08-30 15:41:58,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97741 conditions, 39993 events. 26719/39993 cut-off events. For 14131/14310 co-relation queries the response was YES. Maximal size of possible extension queue 1272. Compared 292225 event pairs, 4855 based on Foata normal form. 179/31754 useless extension candidates. Maximal degree in co-relation 97720. Up to 9741 conditions per place. [2023-08-30 15:41:58,881 INFO L137 encePairwiseOnDemand]: 580/584 looper letters, 171 selfloop transitions, 9 changer transitions 0/186 dead transitions. [2023-08-30 15:41:58,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 186 transitions, 1212 flow [2023-08-30 15:41:58,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:41:58,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:41:58,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2028 transitions. [2023-08-30 15:41:58,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49608610567514677 [2023-08-30 15:41:58,886 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2028 transitions. [2023-08-30 15:41:58,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2028 transitions. [2023-08-30 15:41:58,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:58,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2028 transitions. [2023-08-30 15:41:58,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 289.7142857142857) internal successors, (2028), 7 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:58,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 584.0) internal successors, (4672), 8 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:58,895 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 584.0) internal successors, (4672), 8 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:58,895 INFO L175 Difference]: Start difference. First operand has 70 places, 84 transitions, 507 flow. Second operand 7 states and 2028 transitions. [2023-08-30 15:41:58,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 186 transitions, 1212 flow [2023-08-30 15:41:58,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 186 transitions, 1161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:41:58,918 INFO L231 Difference]: Finished difference. Result has 77 places, 90 transitions, 515 flow [2023-08-30 15:41:58,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=515, PETRI_PLACES=77, PETRI_TRANSITIONS=90} [2023-08-30 15:41:58,919 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 26 predicate places. [2023-08-30 15:41:58,919 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 90 transitions, 515 flow [2023-08-30 15:41:58,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:58,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:58,920 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:58,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 15:41:59,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:59,125 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:41:59,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:59,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1128676483, now seen corresponding path program 1 times [2023-08-30 15:41:59,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:59,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439676607] [2023-08-30 15:41:59,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:59,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:59,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:59,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:59,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439676607] [2023-08-30 15:41:59,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439676607] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:59,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154543366] [2023-08-30 15:41:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:59,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:59,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:59,213 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:41:59,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:41:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:59,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:41:59,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:59,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:59,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:41:59,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154543366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:59,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:41:59,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 15:41:59,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265472356] [2023-08-30 15:41:59,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:59,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:41:59,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:59,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:41:59,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:41:59,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 584 [2023-08-30 15:41:59,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 90 transitions, 515 flow. Second operand has 4 states, 4 states have (on average 275.25) internal successors, (1101), 4 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:59,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:59,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 584 [2023-08-30 15:41:59,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:42:01,894 INFO L130 PetriNetUnfolder]: 23844/36620 cut-off events. [2023-08-30 15:42:01,894 INFO L131 PetriNetUnfolder]: For 34127/34297 co-relation queries the response was YES. [2023-08-30 15:42:01,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94557 conditions, 36620 events. 23844/36620 cut-off events. For 34127/34297 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 280884 event pairs, 634 based on Foata normal form. 1266/32385 useless extension candidates. Maximal degree in co-relation 94534. Up to 26369 conditions per place. [2023-08-30 15:42:02,048 INFO L137 encePairwiseOnDemand]: 581/584 looper letters, 114 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2023-08-30 15:42:02,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 122 transitions, 843 flow [2023-08-30 15:42:02,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:42:02,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:42:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1152 transitions. [2023-08-30 15:42:02,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931506849315068 [2023-08-30 15:42:02,050 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1152 transitions. [2023-08-30 15:42:02,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1152 transitions. [2023-08-30 15:42:02,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:42:02,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1152 transitions. [2023-08-30 15:42:02,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:02,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:02,054 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:02,054 INFO L175 Difference]: Start difference. First operand has 77 places, 90 transitions, 515 flow. Second operand 4 states and 1152 transitions. [2023-08-30 15:42:02,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 122 transitions, 843 flow [2023-08-30 15:42:02,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 122 transitions, 835 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 15:42:02,241 INFO L231 Difference]: Finished difference. Result has 77 places, 86 transitions, 484 flow [2023-08-30 15:42:02,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=484, PETRI_PLACES=77, PETRI_TRANSITIONS=86} [2023-08-30 15:42:02,242 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 26 predicate places. [2023-08-30 15:42:02,242 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 86 transitions, 484 flow [2023-08-30 15:42:02,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 275.25) internal successors, (1101), 4 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:02,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:42:02,243 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:42:02,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 15:42:02,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:42:02,451 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:42:02,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:42:02,452 INFO L85 PathProgramCache]: Analyzing trace with hash -93188449, now seen corresponding path program 1 times [2023-08-30 15:42:02,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:42:02,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868190602] [2023-08-30 15:42:02,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:02,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:42:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 15:42:02,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:42:02,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868190602] [2023-08-30 15:42:02,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868190602] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:42:02,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368481797] [2023-08-30 15:42:02,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:02,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:42:02,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:42:02,520 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:42:02,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 15:42:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:02,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:42:02,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:42:02,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:42:02,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:42:02,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:42:02,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368481797] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:42:02,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:42:02,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-08-30 15:42:02,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524728192] [2023-08-30 15:42:02,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:42:02,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:42:02,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:42:02,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:42:02,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:42:03,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 584 [2023-08-30 15:42:03,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 86 transitions, 484 flow. Second operand has 13 states, 13 states have (on average 246.84615384615384) internal successors, (3209), 13 states have internal predecessors, (3209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:03,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:42:03,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 584 [2023-08-30 15:42:03,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:42:06,657 INFO L130 PetriNetUnfolder]: 28208/42429 cut-off events. [2023-08-30 15:42:06,657 INFO L131 PetriNetUnfolder]: For 31219/31219 co-relation queries the response was YES. [2023-08-30 15:42:06,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111700 conditions, 42429 events. 28208/42429 cut-off events. For 31219/31219 co-relation queries the response was YES. Maximal size of possible extension queue 1324. Compared 316198 event pairs, 5255 based on Foata normal form. 388/36700 useless extension candidates. Maximal degree in co-relation 111676. Up to 7895 conditions per place. [2023-08-30 15:42:06,901 INFO L137 encePairwiseOnDemand]: 570/584 looper letters, 267 selfloop transitions, 42 changer transitions 5/319 dead transitions. [2023-08-30 15:42:06,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 319 transitions, 2065 flow [2023-08-30 15:42:06,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 15:42:06,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 15:42:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4151 transitions. [2023-08-30 15:42:06,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4442422945205479 [2023-08-30 15:42:06,907 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4151 transitions. [2023-08-30 15:42:06,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4151 transitions. [2023-08-30 15:42:06,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:42:06,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4151 transitions. [2023-08-30 15:42:06,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 259.4375) internal successors, (4151), 16 states have internal predecessors, (4151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:06,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 584.0) internal successors, (9928), 17 states have internal predecessors, (9928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:06,923 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 584.0) internal successors, (9928), 17 states have internal predecessors, (9928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:06,924 INFO L175 Difference]: Start difference. First operand has 77 places, 86 transitions, 484 flow. Second operand 16 states and 4151 transitions. [2023-08-30 15:42:06,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 319 transitions, 2065 flow [2023-08-30 15:42:06,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 319 transitions, 2050 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:42:06,979 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 602 flow [2023-08-30 15:42:06,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=602, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2023-08-30 15:42:06,980 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 41 predicate places. [2023-08-30 15:42:06,980 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 602 flow [2023-08-30 15:42:06,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 246.84615384615384) internal successors, (3209), 13 states have internal predecessors, (3209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:06,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:42:06,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:42:06,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 15:42:07,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 15:42:07,186 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:42:07,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:42:07,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1063018513, now seen corresponding path program 1 times [2023-08-30 15:42:07,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:42:07,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916556158] [2023-08-30 15:42:07,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:07,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:42:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:42:07,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:42:07,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916556158] [2023-08-30 15:42:07,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916556158] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:42:07,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699810935] [2023-08-30 15:42:07,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:07,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:42:07,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:42:07,301 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:42:07,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 15:42:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:07,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:42:07,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:42:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 15:42:07,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:42:07,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699810935] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:42:07,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:42:07,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-08-30 15:42:07,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134022153] [2023-08-30 15:42:07,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:42:07,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:42:07,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:42:07,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:42:07,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:42:07,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 584 [2023-08-30 15:42:07,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 602 flow. Second operand has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:07,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:42:07,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 584 [2023-08-30 15:42:07,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:42:10,028 INFO L130 PetriNetUnfolder]: 19894/32028 cut-off events. [2023-08-30 15:42:10,028 INFO L131 PetriNetUnfolder]: For 30829/31469 co-relation queries the response was YES. [2023-08-30 15:42:10,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88066 conditions, 32028 events. 19894/32028 cut-off events. For 30829/31469 co-relation queries the response was YES. Maximal size of possible extension queue 1010. Compared 248246 event pairs, 12834 based on Foata normal form. 640/29374 useless extension candidates. Maximal degree in co-relation 88039. Up to 22853 conditions per place. [2023-08-30 15:42:10,192 INFO L137 encePairwiseOnDemand]: 580/584 looper letters, 102 selfloop transitions, 5 changer transitions 4/118 dead transitions. [2023-08-30 15:42:10,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 118 transitions, 940 flow [2023-08-30 15:42:10,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:42:10,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:42:10,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1117 transitions. [2023-08-30 15:42:10,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4781678082191781 [2023-08-30 15:42:10,195 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1117 transitions. [2023-08-30 15:42:10,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1117 transitions. [2023-08-30 15:42:10,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:42:10,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1117 transitions. [2023-08-30 15:42:10,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 279.25) internal successors, (1117), 4 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:10,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:10,199 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:10,199 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 602 flow. Second operand 4 states and 1117 transitions. [2023-08-30 15:42:10,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 118 transitions, 940 flow [2023-08-30 15:42:10,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 874 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-30 15:42:10,232 INFO L231 Difference]: Finished difference. Result has 89 places, 91 transitions, 541 flow [2023-08-30 15:42:10,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=541, PETRI_PLACES=89, PETRI_TRANSITIONS=91} [2023-08-30 15:42:10,233 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 38 predicate places. [2023-08-30 15:42:10,233 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 91 transitions, 541 flow [2023-08-30 15:42:10,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:10,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:42:10,233 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:42:10,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 15:42:10,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 15:42:10,438 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:42:10,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:42:10,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1793209828, now seen corresponding path program 2 times [2023-08-30 15:42:10,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:42:10,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274948539] [2023-08-30 15:42:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:10,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:42:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:42:10,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:42:10,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274948539] [2023-08-30 15:42:10,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274948539] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:42:10,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783415698] [2023-08-30 15:42:10,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:42:10,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:42:10,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:42:10,530 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:42:10,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 15:42:10,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:42:10,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:42:10,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:42:10,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:42:10,695 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-30 15:42:10,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:42:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-30 15:42:10,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783415698] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:42:10,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:42:10,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-08-30 15:42:10,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955241100] [2023-08-30 15:42:10,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:42:10,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 15:42:10,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:42:10,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 15:42:10,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-08-30 15:42:10,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 584 [2023-08-30 15:42:10,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 91 transitions, 541 flow. Second operand has 9 states, 9 states have (on average 271.55555555555554) internal successors, (2444), 9 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:10,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:42:10,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 584 [2023-08-30 15:42:10,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:42:13,951 INFO L130 PetriNetUnfolder]: 27494/42118 cut-off events. [2023-08-30 15:42:13,951 INFO L131 PetriNetUnfolder]: For 58166/58999 co-relation queries the response was YES. [2023-08-30 15:42:14,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118840 conditions, 42118 events. 27494/42118 cut-off events. For 58166/58999 co-relation queries the response was YES. Maximal size of possible extension queue 1132. Compared 316605 event pairs, 2724 based on Foata normal form. 1897/39549 useless extension candidates. Maximal degree in co-relation 118813. Up to 6048 conditions per place. [2023-08-30 15:42:14,142 INFO L137 encePairwiseOnDemand]: 579/584 looper letters, 123 selfloop transitions, 9 changer transitions 98/235 dead transitions. [2023-08-30 15:42:14,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 235 transitions, 1635 flow [2023-08-30 15:42:14,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 15:42:14,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 15:42:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2531 transitions. [2023-08-30 15:42:14,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481544901065449 [2023-08-30 15:42:14,146 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2531 transitions. [2023-08-30 15:42:14,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2531 transitions. [2023-08-30 15:42:14,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:42:14,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2531 transitions. [2023-08-30 15:42:14,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 281.22222222222223) internal successors, (2531), 9 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:14,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 584.0) internal successors, (5840), 10 states have internal predecessors, (5840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:14,154 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 584.0) internal successors, (5840), 10 states have internal predecessors, (5840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:14,154 INFO L175 Difference]: Start difference. First operand has 89 places, 91 transitions, 541 flow. Second operand 9 states and 2531 transitions. [2023-08-30 15:42:14,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 235 transitions, 1635 flow [2023-08-30 15:42:14,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 235 transitions, 1565 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-30 15:42:14,313 INFO L231 Difference]: Finished difference. Result has 88 places, 60 transitions, 334 flow [2023-08-30 15:42:14,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=334, PETRI_PLACES=88, PETRI_TRANSITIONS=60} [2023-08-30 15:42:14,313 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 37 predicate places. [2023-08-30 15:42:14,314 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 60 transitions, 334 flow [2023-08-30 15:42:14,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 271.55555555555554) internal successors, (2444), 9 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:14,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:42:14,314 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:42:14,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 15:42:14,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 15:42:14,519 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 15:42:14,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:42:14,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1639180099, now seen corresponding path program 2 times [2023-08-30 15:42:14,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:42:14,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395986205] [2023-08-30 15:42:14,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:14,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:42:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:42:14,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:42:14,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395986205] [2023-08-30 15:42:14,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395986205] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:42:14,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502523524] [2023-08-30 15:42:14,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:42:14,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:42:14,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:42:14,672 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:42:14,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 15:42:14,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:42:14,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:42:14,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:42:14,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:42:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-30 15:42:14,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:42:14,865 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-30 15:42:14,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502523524] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:42:14,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:42:14,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-08-30 15:42:14,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816953787] [2023-08-30 15:42:14,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:42:14,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 15:42:14,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:42:14,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 15:42:14,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 15:42:15,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 584 [2023-08-30 15:42:15,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 60 transitions, 334 flow. Second operand has 10 states, 10 states have (on average 247.3) internal successors, (2473), 10 states have internal predecessors, (2473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:15,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:42:15,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 584 [2023-08-30 15:42:15,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:42:17,391 INFO L130 PetriNetUnfolder]: 18965/28546 cut-off events. [2023-08-30 15:42:17,391 INFO L131 PetriNetUnfolder]: For 28937/29287 co-relation queries the response was YES. [2023-08-30 15:42:17,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83493 conditions, 28546 events. 18965/28546 cut-off events. For 28937/29287 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 189946 event pairs, 4886 based on Foata normal form. 350/28788 useless extension candidates. Maximal degree in co-relation 83469. Up to 8676 conditions per place. [2023-08-30 15:42:17,469 INFO L137 encePairwiseOnDemand]: 571/584 looper letters, 0 selfloop transitions, 0 changer transitions 194/194 dead transitions. [2023-08-30 15:42:17,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 194 transitions, 1339 flow [2023-08-30 15:42:17,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 15:42:17,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 15:42:17,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3546 transitions. [2023-08-30 15:42:17,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43370841487279843 [2023-08-30 15:42:17,474 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3546 transitions. [2023-08-30 15:42:17,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3546 transitions. [2023-08-30 15:42:17,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:42:17,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3546 transitions. [2023-08-30 15:42:17,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 253.28571428571428) internal successors, (3546), 14 states have internal predecessors, (3546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:17,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 584.0) internal successors, (8760), 15 states have internal predecessors, (8760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:17,484 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 584.0) internal successors, (8760), 15 states have internal predecessors, (8760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:17,484 INFO L175 Difference]: Start difference. First operand has 88 places, 60 transitions, 334 flow. Second operand 14 states and 3546 transitions. [2023-08-30 15:42:17,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 194 transitions, 1339 flow [2023-08-30 15:42:17,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 194 transitions, 1087 flow, removed 40 selfloop flow, removed 15 redundant places. [2023-08-30 15:42:17,756 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2023-08-30 15:42:17,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2023-08-30 15:42:17,757 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2023-08-30 15:42:17,757 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2023-08-30 15:42:17,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.3) internal successors, (2473), 10 states have internal predecessors, (2473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:17,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 23 remaining) [2023-08-30 15:42:17,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-08-30 15:42:17,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-08-30 15:42:17,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-08-30 15:42:17,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-08-30 15:42:17,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-08-30 15:42:17,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-08-30 15:42:17,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-08-30 15:42:17,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-08-30 15:42:17,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-08-30 15:42:17,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-08-30 15:42:17,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-08-30 15:42:17,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-08-30 15:42:17,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-08-30 15:42:17,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 23 remaining) [2023-08-30 15:42:17,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 23 remaining) [2023-08-30 15:42:17,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 23 remaining) [2023-08-30 15:42:17,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-08-30 15:42:17,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-08-30 15:42:17,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-08-30 15:42:17,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-08-30 15:42:17,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-08-30 15:42:17,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-08-30 15:42:17,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 15:42:17,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:42:17,962 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:42:17,966 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 15:42:17,966 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 15:42:17,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:42:17 BasicIcfg [2023-08-30 15:42:17,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 15:42:17,968 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 15:42:17,968 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 15:42:17,969 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 15:42:17,969 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:41:29" (3/4) ... [2023-08-30 15:42:17,971 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 15:42:17,976 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 15:42:17,976 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 15:42:17,976 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 15:42:17,982 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2023-08-30 15:42:17,982 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 15:42:17,983 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 15:42:17,983 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 15:42:18,021 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 15:42:18,021 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 15:42:18,021 INFO L158 Benchmark]: Toolchain (without parser) took 49445.58ms. Allocated memory was 69.2MB in the beginning and 12.1GB in the end (delta: 12.0GB). Free memory was 44.5MB in the beginning and 9.6GB in the end (delta: -9.6GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. [2023-08-30 15:42:18,022 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 69.2MB. Free memory was 47.3MB in the beginning and 47.3MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:42:18,022 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.00ms. Allocated memory is still 69.2MB. Free memory was 44.3MB in the beginning and 32.9MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 15:42:18,022 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.94ms. Allocated memory is still 69.2MB. Free memory was 32.6MB in the beginning and 30.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:42:18,022 INFO L158 Benchmark]: Boogie Preprocessor took 55.15ms. Allocated memory is still 69.2MB. Free memory was 30.6MB in the beginning and 28.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:42:18,023 INFO L158 Benchmark]: RCFGBuilder took 571.03ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 28.4MB in the beginning and 45.0MB in the end (delta: -16.5MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2023-08-30 15:42:18,023 INFO L158 Benchmark]: TraceAbstraction took 48461.64ms. Allocated memory was 88.1MB in the beginning and 12.1GB in the end (delta: 12.0GB). Free memory was 44.6MB in the beginning and 9.6GB in the end (delta: -9.6GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2023-08-30 15:42:18,023 INFO L158 Benchmark]: Witness Printer took 52.68ms. Allocated memory is still 12.1GB. Free memory was 9.6GB in the beginning and 9.6GB in the end (delta: 5.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 15:42:18,024 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 69.2MB. Free memory was 47.3MB in the beginning and 47.3MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.00ms. Allocated memory is still 69.2MB. Free memory was 44.3MB in the beginning and 32.9MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.94ms. Allocated memory is still 69.2MB. Free memory was 32.6MB in the beginning and 30.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.15ms. Allocated memory is still 69.2MB. Free memory was 30.6MB in the beginning and 28.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 571.03ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 28.4MB in the beginning and 45.0MB in the end (delta: -16.5MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. * TraceAbstraction took 48461.64ms. Allocated memory was 88.1MB in the beginning and 12.1GB in the end (delta: 12.0GB). Free memory was 44.6MB in the beginning and 9.6GB in the end (delta: -9.6GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. * Witness Printer took 52.68ms. Allocated memory is still 12.1GB. Free memory was 9.6GB in the beginning and 9.6GB in the end (delta: 5.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.1s, 250 PlacesBefore, 51 PlacesAfterwards, 263 TransitionsBefore, 48 TransitionsAfterwards, 3240 CoEnabledTransitionPairs, 7 FixpointIterations, 173 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 40 TrivialYvCompositions, 6 ConcurrentYvCompositions, 16 ChoiceCompositions, 285 TotalNumberOfCompositions, 7233 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3510, independent: 3309, independent conditional: 0, independent unconditional: 3309, dependent: 201, dependent conditional: 0, dependent unconditional: 201, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1705, independent: 1644, independent conditional: 0, independent unconditional: 1644, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3510, independent: 1665, independent conditional: 0, independent unconditional: 1665, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 1705, unknown conditional: 0, unknown unconditional: 1705] , Statistics on independence cache: Total cache size (in pairs): 144, Positive cache size: 114, Positive conditional cache size: 0, Positive unconditional cache size: 114, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 329 locations, 23 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 48.3s, OverallIterations: 19, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 35.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4674 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3778 mSDsluCounter, 1309 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1020 mSDsCounter, 400 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6721 IncrementalHoareTripleChecker+Invalid, 7121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 400 mSolverCounterUnsat, 289 mSDtfsCounter, 6721 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 327 GetRequests, 197 SyntacticMatches, 5 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=602occurred in iteration=16, InterpolantAutomatonStates: 109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 379 NumberOfCodeBlocks, 343 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 434 ConstructedInterpolants, 0 QuantifiedInterpolants, 1254 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2362 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 36 InterpolantComputations, 13 PerfectInterpolantSequences, 186/299 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 15:42:18,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE