./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.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-sum-array-hom.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 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 --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 15:41:02,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:41:02,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:41:02,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:41:02,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:41:02,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:41:02,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:41:02,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:41:02,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:41:02,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:41:02,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:41:02,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:41:02,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:41:02,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:41:02,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:41:02,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:41:02,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:41:02,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:41:02,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:41:02,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:41:02,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:41:02,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:41:02,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:41:02,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:41:02,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:41:02,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:41:02,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:41:02,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:41:02,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:41:02,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:41:02,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:41:02,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:41:02,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:41:02,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:41:02,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:41:02,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:41:02,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:41:02,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:41:02,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:41:02,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:41:02,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:41:02,767 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:41:02,801 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:41:02,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:41:02,802 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:41:02,802 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:41:02,803 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:41:02,803 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:41:02,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:41:02,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:41:02,804 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:41:02,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:41:02,805 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:41:02,805 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:41:02,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:41:02,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:41:02,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:41:02,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:41:02,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:41:02,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:41:02,807 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:41:02,807 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:41:02,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:41:02,807 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:41:02,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:41:02,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:41:02,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:41:02,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:41:02,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:41:02,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:41:02,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:41:02,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:41:02,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:41:02,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:41:02,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:41:02,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:41:02,810 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:41:02,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:41:02,810 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:41:02,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:41:03,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:41:03,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:41:03,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:41:03,152 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:41:03,152 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:41:03,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2023-08-30 15:41:04,325 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:41:04,559 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:41:04,560 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2023-08-30 15:41:04,566 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae08b6146/85bbeaeb13674a21a330117643981aa1/FLAG30177b9e4 [2023-08-30 15:41:04,588 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae08b6146/85bbeaeb13674a21a330117643981aa1 [2023-08-30 15:41:04,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:41:04,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:41:04,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:41:04,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:41:04,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:41:04,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:41:04" (1/1) ... [2023-08-30 15:41:04,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb54604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:04, skipping insertion in model container [2023-08-30 15:41:04,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:41:04" (1/1) ... [2023-08-30 15:41:04,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:41:04,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:41:04,804 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-sum-array-hom.wvr.c[2396,2409] [2023-08-30 15:41:04,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:41:04,823 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:41:04,856 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-sum-array-hom.wvr.c[2396,2409] [2023-08-30 15:41:04,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:41:04,878 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:41:04,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:04 WrapperNode [2023-08-30 15:41:04,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:41:04,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:41:04,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:41:04,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:41:04,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:04" (1/1) ... [2023-08-30 15:41:04,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:04" (1/1) ... [2023-08-30 15:41:04,929 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 107 [2023-08-30 15:41:04,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:41:04,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:41:04,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:41:04,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:41:04,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:04" (1/1) ... [2023-08-30 15:41:04,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:04" (1/1) ... [2023-08-30 15:41:04,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:04" (1/1) ... [2023-08-30 15:41:04,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:04" (1/1) ... [2023-08-30 15:41:04,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:04" (1/1) ... [2023-08-30 15:41:04,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:04" (1/1) ... [2023-08-30 15:41:04,954 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:04" (1/1) ... [2023-08-30 15:41:04,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:04" (1/1) ... [2023-08-30 15:41:04,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:41:04,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:41:04,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:41:04,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:41:04,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:04" (1/1) ... [2023-08-30 15:41:04,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:41:04,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:04,994 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 15:41:05,017 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 15:41:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:41:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:41:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:41:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:41:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:41:05,030 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:41:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:41:05,030 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:41:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:41:05,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:41:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:41:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:41:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:41:05,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:41:05,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:41:05,033 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 15:41:05,162 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:41:05,164 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:41:05,437 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:41:05,444 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:41:05,445 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 15:41:05,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:41:05 BoogieIcfgContainer [2023-08-30 15:41:05,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:41:05,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:41:05,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:41:05,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:41:05,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:41:04" (1/3) ... [2023-08-30 15:41:05,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2b206d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:41:05, skipping insertion in model container [2023-08-30 15:41:05,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:04" (2/3) ... [2023-08-30 15:41:05,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2b206d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:41:05, skipping insertion in model container [2023-08-30 15:41:05,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:41:05" (3/3) ... [2023-08-30 15:41:05,453 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2023-08-30 15:41:05,459 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:41:05,466 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:41:05,466 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 15:41:05,466 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:41:05,529 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:41:05,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 165 transitions, 354 flow [2023-08-30 15:41:05,646 INFO L130 PetriNetUnfolder]: 12/162 cut-off events. [2023-08-30 15:41:05,647 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:41:05,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 162 events. 12/162 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 159 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-08-30 15:41:05,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 165 transitions, 354 flow [2023-08-30 15:41:05,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 144 transitions, 303 flow [2023-08-30 15:41:05,667 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:41:05,679 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 144 transitions, 303 flow [2023-08-30 15:41:05,685 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 144 transitions, 303 flow [2023-08-30 15:41:05,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 144 transitions, 303 flow [2023-08-30 15:41:05,717 INFO L130 PetriNetUnfolder]: 11/144 cut-off events. [2023-08-30 15:41:05,718 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:41:05,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 144 events. 11/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 158 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-08-30 15:41:05,723 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-08-30 15:41:10,331 INFO L134 LiptonReduction]: Checked pairs total: 2954 [2023-08-30 15:41:10,331 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-30 15:41:10,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:41:10,348 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;@33dd2c82, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:41:10,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 15:41:10,351 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:41:10,351 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:41:10,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:10,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:41:10,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 15:41:10,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:10,356 INFO L85 PathProgramCache]: Analyzing trace with hash 19618, now seen corresponding path program 1 times [2023-08-30 15:41:10,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:10,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589755472] [2023-08-30 15:41:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:10,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:10,640 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 15:41:10,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:10,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589755472] [2023-08-30 15:41:10,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589755472] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:10,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:10,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:41:10,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286926203] [2023-08-30 15:41:10,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:10,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:10,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:10,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:10,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:10,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 314 [2023-08-30 15:41:10,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:10,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:10,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 314 [2023-08-30 15:41:10,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:11,001 INFO L130 PetriNetUnfolder]: 2441/3187 cut-off events. [2023-08-30 15:41:11,002 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-08-30 15:41:11,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6502 conditions, 3187 events. 2441/3187 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 13664 event pairs, 1155 based on Foata normal form. 0/1166 useless extension candidates. Maximal degree in co-relation 2744. Up to 1566 conditions per place. [2023-08-30 15:41:11,043 INFO L137 encePairwiseOnDemand]: 310/314 looper letters, 49 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-30 15:41:11,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 240 flow [2023-08-30 15:41:11,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:11,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:11,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-08-30 15:41:11,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524416135881104 [2023-08-30 15:41:11,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-08-30 15:41:11,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-08-30 15:41:11,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:11,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-08-30 15:41:11,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:11,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:11,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:11,070 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 75 flow. Second operand 3 states and 494 transitions. [2023-08-30 15:41:11,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 240 flow [2023-08-30 15:41:11,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 54 transitions, 222 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:41:11,076 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 80 flow [2023-08-30 15:41:11,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-08-30 15:41:11,080 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-08-30 15:41:11,081 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 80 flow [2023-08-30 15:41:11,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:11,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:11,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:41:11,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:41:11,082 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 15:41:11,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:11,083 INFO L85 PathProgramCache]: Analyzing trace with hash 609021, now seen corresponding path program 1 times [2023-08-30 15:41:11,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:11,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920617358] [2023-08-30 15:41:11,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:11,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:11,136 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 15:41:11,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:11,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920617358] [2023-08-30 15:41:11,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920617358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:11,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:11,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:11,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559144147] [2023-08-30 15:41:11,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:11,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:11,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:11,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:11,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:11,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 314 [2023-08-30 15:41:11,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:11,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:11,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 314 [2023-08-30 15:41:11,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:11,398 INFO L130 PetriNetUnfolder]: 2449/3194 cut-off events. [2023-08-30 15:41:11,398 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 15:41:11,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6449 conditions, 3194 events. 2449/3194 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 13667 event pairs, 1156 based on Foata normal form. 0/1169 useless extension candidates. Maximal degree in co-relation 3222. Up to 3134 conditions per place. [2023-08-30 15:41:11,414 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 26 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-30 15:41:11,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 130 flow [2023-08-30 15:41:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:11,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:11,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2023-08-30 15:41:11,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968152866242038 [2023-08-30 15:41:11,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 468 transitions. [2023-08-30 15:41:11,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 468 transitions. [2023-08-30 15:41:11,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:11,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 468 transitions. [2023-08-30 15:41:11,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:11,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:11,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:11,425 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 3 states and 468 transitions. [2023-08-30 15:41:11,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 130 flow [2023-08-30 15:41:11,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:11,426 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 76 flow [2023-08-30 15:41:11,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-08-30 15:41:11,427 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-08-30 15:41:11,427 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 76 flow [2023-08-30 15:41:11,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:11,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:11,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:41:11,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:41:11,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 15:41:11,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:11,431 INFO L85 PathProgramCache]: Analyzing trace with hash 609020, now seen corresponding path program 1 times [2023-08-30 15:41:11,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:11,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708340986] [2023-08-30 15:41:11,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:11,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:11,534 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 15:41:11,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:11,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708340986] [2023-08-30 15:41:11,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708340986] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:11,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736308479] [2023-08-30 15:41:11,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:11,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:11,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:11,549 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 15:41:11,568 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 15:41:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:11,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:41:11,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:11,643 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 15:41:11,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:11,658 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 15:41:11,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736308479] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:11,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:11,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:41:11,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148898177] [2023-08-30 15:41:11,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:11,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:41:11,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:11,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:41:11,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:41:11,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 314 [2023-08-30 15:41:11,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:11,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:11,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 314 [2023-08-30 15:41:11,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:12,333 INFO L130 PetriNetUnfolder]: 6089/7950 cut-off events. [2023-08-30 15:41:12,333 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-30 15:41:12,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16038 conditions, 7950 events. 6089/7950 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 38430 event pairs, 2886 based on Foata normal form. 0/2917 useless extension candidates. Maximal degree in co-relation 16030. Up to 1566 conditions per place. [2023-08-30 15:41:12,389 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 117 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2023-08-30 15:41:12,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 125 transitions, 540 flow [2023-08-30 15:41:12,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:41:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:41:12,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1007 transitions. [2023-08-30 15:41:12,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345010615711253 [2023-08-30 15:41:12,392 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1007 transitions. [2023-08-30 15:41:12,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1007 transitions. [2023-08-30 15:41:12,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:12,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1007 transitions. [2023-08-30 15:41:12,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.83333333333334) internal successors, (1007), 6 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:12,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:12,399 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:12,399 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 76 flow. Second operand 6 states and 1007 transitions. [2023-08-30 15:41:12,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 125 transitions, 540 flow [2023-08-30 15:41:12,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 125 transitions, 539 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:12,402 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 111 flow [2023-08-30 15:41:12,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-08-30 15:41:12,403 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2023-08-30 15:41:12,403 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 111 flow [2023-08-30 15:41:12,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:12,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:12,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:41:12,415 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 15:41:12,611 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 15:41:12,611 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 15:41:12,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:12,611 INFO L85 PathProgramCache]: Analyzing trace with hash 585731244, now seen corresponding path program 1 times [2023-08-30 15:41:12,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:12,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846676646] [2023-08-30 15:41:12,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:12,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:12,656 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 15:41:12,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:12,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846676646] [2023-08-30 15:41:12,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846676646] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:12,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:12,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:12,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072286484] [2023-08-30 15:41:12,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:12,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:12,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:12,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:12,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:12,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-08-30 15:41:12,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:12,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:12,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-08-30 15:41:12,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:13,445 INFO L130 PetriNetUnfolder]: 8331/11112 cut-off events. [2023-08-30 15:41:13,446 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-08-30 15:41:13,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22506 conditions, 11112 events. 8331/11112 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 59819 event pairs, 1930 based on Foata normal form. 0/4577 useless extension candidates. Maximal degree in co-relation 22494. Up to 7078 conditions per place. [2023-08-30 15:41:13,492 INFO L137 encePairwiseOnDemand]: 310/314 looper letters, 48 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-30 15:41:13,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 254 flow [2023-08-30 15:41:13,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:13,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2023-08-30 15:41:13,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222929936305732 [2023-08-30 15:41:13,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2023-08-30 15:41:13,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2023-08-30 15:41:13,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:13,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2023-08-30 15:41:13,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:13,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:13,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:13,499 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 111 flow. Second operand 3 states and 492 transitions. [2023-08-30 15:41:13,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 254 flow [2023-08-30 15:41:13,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 246 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:13,502 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 117 flow [2023-08-30 15:41:13,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-08-30 15:41:13,503 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-08-30 15:41:13,503 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 117 flow [2023-08-30 15:41:13,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:13,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:13,504 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:41:13,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:41:13,505 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 15:41:13,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:13,506 INFO L85 PathProgramCache]: Analyzing trace with hash 964332385, now seen corresponding path program 2 times [2023-08-30 15:41:13,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:13,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26701920] [2023-08-30 15:41:13,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:13,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:13,586 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 15:41:13,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:13,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26701920] [2023-08-30 15:41:13,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26701920] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:13,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878372116] [2023-08-30 15:41:13,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:41:13,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:13,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:13,589 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 15:41:13,614 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 15:41:13,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:41:13,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:41:13,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:41:13,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:13,679 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 15:41:13,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:41:13,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878372116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:13,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:41:13,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:41:13,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334917308] [2023-08-30 15:41:13,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:13,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:13,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:13,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:13,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:41:13,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-08-30 15:41:13,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:13,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:13,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-08-30 15:41:13,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:14,312 INFO L130 PetriNetUnfolder]: 7076/9551 cut-off events. [2023-08-30 15:41:14,312 INFO L131 PetriNetUnfolder]: For 603/873 co-relation queries the response was YES. [2023-08-30 15:41:14,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20693 conditions, 9551 events. 7076/9551 cut-off events. For 603/873 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 52026 event pairs, 3890 based on Foata normal form. 271/4642 useless extension candidates. Maximal degree in co-relation 20680. Up to 9381 conditions per place. [2023-08-30 15:41:14,358 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 29 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-08-30 15:41:14,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 33 transitions, 167 flow [2023-08-30 15:41:14,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:14,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:14,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2023-08-30 15:41:14,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4989384288747346 [2023-08-30 15:41:14,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2023-08-30 15:41:14,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2023-08-30 15:41:14,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:14,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2023-08-30 15:41:14,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:14,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:14,364 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:14,364 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 117 flow. Second operand 3 states and 470 transitions. [2023-08-30 15:41:14,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 33 transitions, 167 flow [2023-08-30 15:41:14,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 155 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 15:41:14,368 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 97 flow [2023-08-30 15:41:14,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-08-30 15:41:14,370 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-08-30 15:41:14,373 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 97 flow [2023-08-30 15:41:14,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:14,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:14,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:41:14,384 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 15:41:14,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:14,585 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 15:41:14,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:14,586 INFO L85 PathProgramCache]: Analyzing trace with hash 977799977, now seen corresponding path program 1 times [2023-08-30 15:41:14,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:14,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983094052] [2023-08-30 15:41:14,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:14,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:14,700 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 15:41:14,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:14,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983094052] [2023-08-30 15:41:14,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983094052] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:14,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503151168] [2023-08-30 15:41:14,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:14,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:14,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:14,703 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 15:41:14,729 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 15:41:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:14,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:41:14,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:14,830 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 15:41:14,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:41:14,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503151168] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:14,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:41:14,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 15:41:14,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939896283] [2023-08-30 15:41:14,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:14,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:41:14,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:14,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:41:14,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:41:14,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 314 [2023-08-30 15:41:14,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:14,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:14,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 314 [2023-08-30 15:41:14,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:15,583 INFO L130 PetriNetUnfolder]: 6913/9343 cut-off events. [2023-08-30 15:41:15,583 INFO L131 PetriNetUnfolder]: For 747/747 co-relation queries the response was YES. [2023-08-30 15:41:15,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20045 conditions, 9343 events. 6913/9343 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 50159 event pairs, 3591 based on Foata normal form. 52/4466 useless extension candidates. Maximal degree in co-relation 20035. Up to 8410 conditions per place. [2023-08-30 15:41:15,636 INFO L137 encePairwiseOnDemand]: 308/314 looper letters, 59 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2023-08-30 15:41:15,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 65 transitions, 298 flow [2023-08-30 15:41:15,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:41:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:41:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 767 transitions. [2023-08-30 15:41:15,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48853503184713376 [2023-08-30 15:41:15,640 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 767 transitions. [2023-08-30 15:41:15,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 767 transitions. [2023-08-30 15:41:15,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:15,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 767 transitions. [2023-08-30 15:41:15,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.4) internal successors, (767), 5 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:15,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 314.0) internal successors, (1884), 6 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:15,645 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 314.0) internal successors, (1884), 6 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:15,645 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 97 flow. Second operand 5 states and 767 transitions. [2023-08-30 15:41:15,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 65 transitions, 298 flow [2023-08-30 15:41:15,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 65 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:15,648 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 126 flow [2023-08-30 15:41:15,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2023-08-30 15:41:15,651 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2023-08-30 15:41:15,651 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 126 flow [2023-08-30 15:41:15,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:15,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:15,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:15,659 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 15:41:15,859 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 15:41:15,860 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 15:41:15,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:15,860 INFO L85 PathProgramCache]: Analyzing trace with hash 251954377, now seen corresponding path program 1 times [2023-08-30 15:41:15,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:15,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241413696] [2023-08-30 15:41:15,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:15,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:15,919 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 15:41:15,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:15,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241413696] [2023-08-30 15:41:15,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241413696] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:15,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:15,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:15,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386078058] [2023-08-30 15:41:15,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:15,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:15,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:15,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:15,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:15,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-08-30 15:41:15,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:15,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:15,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-08-30 15:41:15,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:16,466 INFO L130 PetriNetUnfolder]: 8062/11133 cut-off events. [2023-08-30 15:41:16,466 INFO L131 PetriNetUnfolder]: For 4139/4623 co-relation queries the response was YES. [2023-08-30 15:41:16,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26504 conditions, 11133 events. 8062/11133 cut-off events. For 4139/4623 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 65439 event pairs, 3653 based on Foata normal form. 481/7114 useless extension candidates. Maximal degree in co-relation 26490. Up to 7771 conditions per place. [2023-08-30 15:41:16,521 INFO L137 encePairwiseOnDemand]: 310/314 looper letters, 48 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-30 15:41:16,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 280 flow [2023-08-30 15:41:16,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:16,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2023-08-30 15:41:16,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191082802547771 [2023-08-30 15:41:16,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2023-08-30 15:41:16,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2023-08-30 15:41:16,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:16,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2023-08-30 15:41:16,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:16,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:16,530 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:16,531 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 126 flow. Second operand 3 states and 489 transitions. [2023-08-30 15:41:16,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 280 flow [2023-08-30 15:41:16,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 274 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 15:41:16,537 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 134 flow [2023-08-30 15:41:16,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2023-08-30 15:41:16,538 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2023-08-30 15:41:16,538 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 134 flow [2023-08-30 15:41:16,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:16,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:16,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:16,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 15:41:16,540 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 15:41:16,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:16,541 INFO L85 PathProgramCache]: Analyzing trace with hash -156998660, now seen corresponding path program 1 times [2023-08-30 15:41:16,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:16,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793061725] [2023-08-30 15:41:16,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:16,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:16,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:16,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793061725] [2023-08-30 15:41:16,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793061725] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:16,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:16,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:16,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973878148] [2023-08-30 15:41:16,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:16,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:16,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:16,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:16,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:16,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-08-30 15:41:16,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:16,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:16,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-08-30 15:41:16,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:17,111 INFO L130 PetriNetUnfolder]: 7064/9745 cut-off events. [2023-08-30 15:41:17,111 INFO L131 PetriNetUnfolder]: For 3941/4382 co-relation queries the response was YES. [2023-08-30 15:41:17,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25404 conditions, 9745 events. 7064/9745 cut-off events. For 3941/4382 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 57017 event pairs, 402 based on Foata normal form. 399/7196 useless extension candidates. Maximal degree in co-relation 25390. Up to 8812 conditions per place. [2023-08-30 15:41:17,153 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 45 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-30 15:41:17,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 49 transitions, 268 flow [2023-08-30 15:41:17,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:17,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-08-30 15:41:17,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127388535031847 [2023-08-30 15:41:17,157 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-08-30 15:41:17,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-08-30 15:41:17,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:17,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-08-30 15:41:17,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:17,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:17,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:17,161 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 134 flow. Second operand 3 states and 483 transitions. [2023-08-30 15:41:17,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 49 transitions, 268 flow [2023-08-30 15:41:17,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:17,165 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 132 flow [2023-08-30 15:41:17,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-08-30 15:41:17,166 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2023-08-30 15:41:17,166 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 132 flow [2023-08-30 15:41:17,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:17,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:17,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:17,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 15:41:17,167 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 15:41:17,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:17,167 INFO L85 PathProgramCache]: Analyzing trace with hash -156998652, now seen corresponding path program 1 times [2023-08-30 15:41:17,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:17,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165002748] [2023-08-30 15:41:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:17,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:17,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:17,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:17,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165002748] [2023-08-30 15:41:17,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165002748] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:17,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92077238] [2023-08-30 15:41:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:17,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:17,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:17,209 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 15:41:17,234 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 15:41:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:17,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:41:17,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:17,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:17,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:17,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92077238] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:17,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:17,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-30 15:41:17,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066845776] [2023-08-30 15:41:17,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:17,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:41:17,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:17,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:41:17,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:41:17,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 314 [2023-08-30 15:41:17,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 132 flow. Second operand has 13 states, 13 states have (on average 139.53846153846155) internal successors, (1814), 13 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:17,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:17,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 314 [2023-08-30 15:41:17,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:18,537 INFO L130 PetriNetUnfolder]: 7898/11100 cut-off events. [2023-08-30 15:41:18,537 INFO L131 PetriNetUnfolder]: For 6545/7020 co-relation queries the response was YES. [2023-08-30 15:41:18,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27767 conditions, 11100 events. 7898/11100 cut-off events. For 6545/7020 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 66616 event pairs, 799 based on Foata normal form. 1044/8741 useless extension candidates. Maximal degree in co-relation 27753. Up to 2405 conditions per place. [2023-08-30 15:41:18,583 INFO L137 encePairwiseOnDemand]: 306/314 looper letters, 207 selfloop transitions, 16 changer transitions 0/225 dead transitions. [2023-08-30 15:41:18,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 225 transitions, 1128 flow [2023-08-30 15:41:18,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 15:41:18,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 15:41:18,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2425 transitions. [2023-08-30 15:41:18,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48268312101910826 [2023-08-30 15:41:18,589 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2425 transitions. [2023-08-30 15:41:18,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2425 transitions. [2023-08-30 15:41:18,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:18,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2425 transitions. [2023-08-30 15:41:18,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 151.5625) internal successors, (2425), 16 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:18,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 314.0) internal successors, (5338), 17 states have internal predecessors, (5338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:18,603 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 314.0) internal successors, (5338), 17 states have internal predecessors, (5338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:18,603 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 132 flow. Second operand 16 states and 2425 transitions. [2023-08-30 15:41:18,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 225 transitions, 1128 flow [2023-08-30 15:41:18,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 225 transitions, 1125 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:18,609 INFO L231 Difference]: Finished difference. Result has 68 places, 44 transitions, 232 flow [2023-08-30 15:41:18,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=232, PETRI_PLACES=68, PETRI_TRANSITIONS=44} [2023-08-30 15:41:18,609 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2023-08-30 15:41:18,610 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 44 transitions, 232 flow [2023-08-30 15:41:18,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 139.53846153846155) internal successors, (1814), 13 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:18,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:18,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:18,617 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 15:41:18,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:18,816 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 15:41:18,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:18,816 INFO L85 PathProgramCache]: Analyzing trace with hash -779348364, now seen corresponding path program 1 times [2023-08-30 15:41:18,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:18,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786437486] [2023-08-30 15:41:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:18,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:18,866 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 15:41:18,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:18,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786437486] [2023-08-30 15:41:18,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786437486] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:18,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051965126] [2023-08-30 15:41:18,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:18,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:18,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:18,868 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 15:41:18,871 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 15:41:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:18,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:41:18,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:18,951 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 15:41:18,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:41:18,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051965126] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:18,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:41:18,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 15:41:18,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565420007] [2023-08-30 15:41:18,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:18,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:41:18,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:18,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:41:18,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:41:18,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-08-30 15:41:18,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 44 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:18,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:18,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-08-30 15:41:18,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:19,622 INFO L130 PetriNetUnfolder]: 7180/10069 cut-off events. [2023-08-30 15:41:19,622 INFO L131 PetriNetUnfolder]: For 26622/27209 co-relation queries the response was YES. [2023-08-30 15:41:19,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30535 conditions, 10069 events. 7180/10069 cut-off events. For 26622/27209 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 58978 event pairs, 796 based on Foata normal form. 561/7856 useless extension candidates. Maximal degree in co-relation 30512. Up to 5460 conditions per place. [2023-08-30 15:41:19,671 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 80 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-30 15:41:19,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 86 transitions, 615 flow [2023-08-30 15:41:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:41:19,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:41:19,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 645 transitions. [2023-08-30 15:41:19,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135350318471338 [2023-08-30 15:41:19,674 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 645 transitions. [2023-08-30 15:41:19,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 645 transitions. [2023-08-30 15:41:19,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:19,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 645 transitions. [2023-08-30 15:41:19,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.25) internal successors, (645), 4 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:19,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:19,679 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:19,679 INFO L175 Difference]: Start difference. First operand has 68 places, 44 transitions, 232 flow. Second operand 4 states and 645 transitions. [2023-08-30 15:41:19,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 86 transitions, 615 flow [2023-08-30 15:41:19,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 86 transitions, 563 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-08-30 15:41:19,715 INFO L231 Difference]: Finished difference. Result has 66 places, 43 transitions, 204 flow [2023-08-30 15:41:19,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=66, PETRI_TRANSITIONS=43} [2023-08-30 15:41:19,715 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2023-08-30 15:41:19,715 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 43 transitions, 204 flow [2023-08-30 15:41:19,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:19,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:19,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:19,726 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 15:41:19,921 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,SelfDestructingSolverStorable9 [2023-08-30 15:41:19,921 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 15:41:19,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:19,922 INFO L85 PathProgramCache]: Analyzing trace with hash -779348363, now seen corresponding path program 1 times [2023-08-30 15:41:19,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:19,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942630496] [2023-08-30 15:41:19,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:19,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:19,966 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 15:41:19,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:19,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942630496] [2023-08-30 15:41:19,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942630496] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:19,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239999388] [2023-08-30 15:41:19,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:19,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:19,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:19,969 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 15:41:19,997 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 15:41:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:20,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:41:20,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:20,059 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 15:41:20,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:20,075 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 15:41:20,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239999388] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:20,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:20,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 15:41:20,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947606538] [2023-08-30 15:41:20,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:20,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:41:20,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:20,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:41:20,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:41:20,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-08-30 15:41:20,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 43 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 149.85714285714286) internal successors, (1049), 7 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:20,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:20,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-08-30 15:41:20,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:21,460 INFO L130 PetriNetUnfolder]: 14479/20302 cut-off events. [2023-08-30 15:41:21,460 INFO L131 PetriNetUnfolder]: For 50217/51368 co-relation queries the response was YES. [2023-08-30 15:41:21,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60097 conditions, 20302 events. 14479/20302 cut-off events. For 50217/51368 co-relation queries the response was YES. Maximal size of possible extension queue 1159. Compared 131610 event pairs, 2375 based on Foata normal form. 1151/16281 useless extension candidates. Maximal degree in co-relation 60074. Up to 6530 conditions per place. [2023-08-30 15:41:21,545 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 129 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2023-08-30 15:41:21,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 138 transitions, 896 flow [2023-08-30 15:41:21,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:41:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:41:21,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 979 transitions. [2023-08-30 15:41:21,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196390658174098 [2023-08-30 15:41:21,548 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 979 transitions. [2023-08-30 15:41:21,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 979 transitions. [2023-08-30 15:41:21,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:21,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 979 transitions. [2023-08-30 15:41:21,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.16666666666666) internal successors, (979), 6 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:21,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:21,554 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:21,554 INFO L175 Difference]: Start difference. First operand has 66 places, 43 transitions, 204 flow. Second operand 6 states and 979 transitions. [2023-08-30 15:41:21,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 138 transitions, 896 flow [2023-08-30 15:41:21,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 138 transitions, 893 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:41:21,579 INFO L231 Difference]: Finished difference. Result has 72 places, 46 transitions, 237 flow [2023-08-30 15:41:21,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=72, PETRI_TRANSITIONS=46} [2023-08-30 15:41:21,579 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-08-30 15:41:21,580 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 46 transitions, 237 flow [2023-08-30 15:41:21,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 149.85714285714286) internal successors, (1049), 7 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:21,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:21,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:21,589 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 15:41:21,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:21,786 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 15:41:21,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:21,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1614511956, now seen corresponding path program 1 times [2023-08-30 15:41:21,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:21,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23835800] [2023-08-30 15:41:21,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:21,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:21,827 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 15:41:21,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:21,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23835800] [2023-08-30 15:41:21,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23835800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:21,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:21,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:21,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080717586] [2023-08-30 15:41:21,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:21,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:41:21,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:21,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:41:21,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:41:21,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 314 [2023-08-30 15:41:21,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 46 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 148.25) internal successors, (593), 4 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:21,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:21,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 314 [2023-08-30 15:41:21,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:22,536 INFO L130 PetriNetUnfolder]: 8850/13277 cut-off events. [2023-08-30 15:41:22,536 INFO L131 PetriNetUnfolder]: For 34088/35505 co-relation queries the response was YES. [2023-08-30 15:41:22,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42485 conditions, 13277 events. 8850/13277 cut-off events. For 34088/35505 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 87304 event pairs, 2106 based on Foata normal form. 1417/13306 useless extension candidates. Maximal degree in co-relation 42459. Up to 9245 conditions per place. [2023-08-30 15:41:22,595 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 62 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-30 15:41:22,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 483 flow [2023-08-30 15:41:22,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:41:22,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:41:22,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 619 transitions. [2023-08-30 15:41:22,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928343949044586 [2023-08-30 15:41:22,597 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 619 transitions. [2023-08-30 15:41:22,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 619 transitions. [2023-08-30 15:41:22,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:22,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 619 transitions. [2023-08-30 15:41:22,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.75) internal successors, (619), 4 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:22,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:22,601 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:22,601 INFO L175 Difference]: Start difference. First operand has 72 places, 46 transitions, 237 flow. Second operand 4 states and 619 transitions. [2023-08-30 15:41:22,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 483 flow [2023-08-30 15:41:22,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 68 transitions, 468 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:22,628 INFO L231 Difference]: Finished difference. Result has 73 places, 45 transitions, 231 flow [2023-08-30 15:41:22,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=73, PETRI_TRANSITIONS=45} [2023-08-30 15:41:22,628 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2023-08-30 15:41:22,628 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 45 transitions, 231 flow [2023-08-30 15:41:22,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.25) internal successors, (593), 4 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:22,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:22,629 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 15:41:22,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 15:41:22,629 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 15:41:22,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:22,630 INFO L85 PathProgramCache]: Analyzing trace with hash -191779604, now seen corresponding path program 2 times [2023-08-30 15:41:22,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:22,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602305999] [2023-08-30 15:41:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:22,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:41:22,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:22,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602305999] [2023-08-30 15:41:22,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602305999] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:22,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284152074] [2023-08-30 15:41:22,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:41:22,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:22,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:22,678 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 15:41:22,681 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 15:41:22,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:41:22,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:41:22,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:41:22,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:22,769 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:41:22,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:41:22,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284152074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:22,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:41:22,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 15:41:22,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646846369] [2023-08-30 15:41:22,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:22,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:22,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:22,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:22,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:41:22,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-08-30 15:41:22,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 45 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:22,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:22,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-08-30 15:41:22,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:23,385 INFO L130 PetriNetUnfolder]: 7514/10855 cut-off events. [2023-08-30 15:41:23,385 INFO L131 PetriNetUnfolder]: For 41015/42240 co-relation queries the response was YES. [2023-08-30 15:41:23,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29354 conditions, 10855 events. 7514/10855 cut-off events. For 41015/42240 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 67139 event pairs, 5211 based on Foata normal form. 1913/10974 useless extension candidates. Maximal degree in co-relation 29326. Up to 10780 conditions per place. [2023-08-30 15:41:23,425 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 34 selfloop transitions, 1 changer transitions 3/43 dead transitions. [2023-08-30 15:41:23,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 43 transitions, 281 flow [2023-08-30 15:41:23,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:23,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:23,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2023-08-30 15:41:23,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49469214437367304 [2023-08-30 15:41:23,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2023-08-30 15:41:23,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2023-08-30 15:41:23,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:23,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2023-08-30 15:41:23,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:23,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:23,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:23,430 INFO L175 Difference]: Start difference. First operand has 73 places, 45 transitions, 231 flow. Second operand 3 states and 466 transitions. [2023-08-30 15:41:23,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 43 transitions, 281 flow [2023-08-30 15:41:23,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 43 transitions, 263 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-08-30 15:41:23,446 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 182 flow [2023-08-30 15:41:23,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2023-08-30 15:41:23,447 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2023-08-30 15:41:23,447 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 182 flow [2023-08-30 15:41:23,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:23,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:23,447 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:23,453 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 15:41:23,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:23,653 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 15:41:23,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:23,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1026627466, now seen corresponding path program 2 times [2023-08-30 15:41:23,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:23,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756016552] [2023-08-30 15:41:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:23,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:23,730 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 15:41:23,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:23,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756016552] [2023-08-30 15:41:23,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756016552] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:23,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734923271] [2023-08-30 15:41:23,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:41:23,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:23,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:23,732 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 15:41:23,734 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 15:41:23,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:41:23,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:41:23,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:41:23,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:23,817 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 15:41:23,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:41:23,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734923271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:23,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:41:23,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-30 15:41:23,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993556260] [2023-08-30 15:41:23,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:23,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:23,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:23,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:23,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:41:23,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-08-30 15:41:23,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:23,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:23,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-08-30 15:41:23,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:24,091 INFO L130 PetriNetUnfolder]: 3214/4611 cut-off events. [2023-08-30 15:41:24,092 INFO L131 PetriNetUnfolder]: For 7504/8281 co-relation queries the response was YES. [2023-08-30 15:41:24,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13630 conditions, 4611 events. 3214/4611 cut-off events. For 7504/8281 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 24317 event pairs, 2131 based on Foata normal form. 1041/4936 useless extension candidates. Maximal degree in co-relation 13609. Up to 4564 conditions per place. [2023-08-30 15:41:24,102 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2023-08-30 15:41:24,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 39 transitions, 240 flow [2023-08-30 15:41:24,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:24,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:24,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-08-30 15:41:24,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4893842887473461 [2023-08-30 15:41:24,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-08-30 15:41:24,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-08-30 15:41:24,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:24,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-08-30 15:41:24,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:24,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:24,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:24,106 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 182 flow. Second operand 3 states and 461 transitions. [2023-08-30 15:41:24,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 39 transitions, 240 flow [2023-08-30 15:41:24,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 39 transitions, 221 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 15:41:24,116 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2023-08-30 15:41:24,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2023-08-30 15:41:24,116 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-08-30 15:41:24,116 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2023-08-30 15:41:24,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:24,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2023-08-30 15:41:24,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 15:41:24,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 15:41:24,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 15:41:24,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 15:41:24,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 15:41:24,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 15:41:24,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 15:41:24,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2023-08-30 15:41:24,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2023-08-30 15:41:24,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2023-08-30 15:41:24,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 15:41:24,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 15:41:24,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 15:41:24,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 15:41:24,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 15:41:24,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 15:41:24,126 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 15:41:24,324 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,SelfDestructingSolverStorable13 [2023-08-30 15:41:24,325 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:24,329 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 15:41:24,329 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 15:41:24,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:41:24 BasicIcfg [2023-08-30 15:41:24,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 15:41:24,331 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 15:41:24,332 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 15:41:24,332 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 15:41:24,332 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:41:05" (3/4) ... [2023-08-30 15:41:24,333 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 15:41:24,337 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 15:41:24,337 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 15:41:24,337 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 15:41:24,340 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-08-30 15:41:24,340 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 15:41:24,340 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 15:41:24,340 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 15:41:24,363 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 15:41:24,363 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 15:41:24,364 INFO L158 Benchmark]: Toolchain (without parser) took 19771.85ms. Allocated memory was 104.9MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 82.3MB in the beginning and 965.8MB in the end (delta: -883.5MB). Peak memory consumption was 950.7MB. Max. memory is 16.1GB. [2023-08-30 15:41:24,364 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 71.3MB. Free memory was 49.7MB in the beginning and 49.6MB in the end (delta: 76.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:41:24,364 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.91ms. Allocated memory is still 104.9MB. Free memory was 82.3MB in the beginning and 71.0MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 15:41:24,364 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.52ms. Allocated memory is still 104.9MB. Free memory was 71.0MB in the beginning and 69.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:41:24,365 INFO L158 Benchmark]: Boogie Preprocessor took 26.92ms. Allocated memory is still 104.9MB. Free memory was 69.0MB in the beginning and 67.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:41:24,365 INFO L158 Benchmark]: RCFGBuilder took 488.52ms. Allocated memory is still 104.9MB. Free memory was 67.6MB in the beginning and 83.4MB in the end (delta: -15.8MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2023-08-30 15:41:24,365 INFO L158 Benchmark]: TraceAbstraction took 18881.55ms. Allocated memory was 104.9MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 82.3MB in the beginning and 968.9MB in the end (delta: -886.6MB). Peak memory consumption was 945.7MB. Max. memory is 16.1GB. [2023-08-30 15:41:24,365 INFO L158 Benchmark]: Witness Printer took 31.71ms. Allocated memory is still 1.9GB. Free memory was 968.9MB in the beginning and 965.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:41:24,367 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 71.3MB. Free memory was 49.7MB in the beginning and 49.6MB in the end (delta: 76.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.91ms. Allocated memory is still 104.9MB. Free memory was 82.3MB in the beginning and 71.0MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.52ms. Allocated memory is still 104.9MB. Free memory was 71.0MB in the beginning and 69.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.92ms. Allocated memory is still 104.9MB. Free memory was 69.0MB in the beginning and 67.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 488.52ms. Allocated memory is still 104.9MB. Free memory was 67.6MB in the beginning and 83.4MB in the end (delta: -15.8MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * TraceAbstraction took 18881.55ms. Allocated memory was 104.9MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 82.3MB in the beginning and 968.9MB in the end (delta: -886.6MB). Peak memory consumption was 945.7MB. Max. memory is 16.1GB. * Witness Printer took 31.71ms. Allocated memory is still 1.9GB. Free memory was 968.9MB in the beginning and 965.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 143 PlacesBefore, 36 PlacesAfterwards, 144 TransitionsBefore, 30 TransitionsAfterwards, 2688 CoEnabledTransitionPairs, 7 FixpointIterations, 73 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 6 ConcurrentYvCompositions, 7 ChoiceCompositions, 149 TotalNumberOfCompositions, 2954 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2784, independent: 2760, independent conditional: 0, independent unconditional: 2760, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1434, independent: 1425, independent conditional: 0, independent unconditional: 1425, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2784, independent: 1335, independent conditional: 0, independent unconditional: 1335, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 1434, unknown conditional: 0, unknown unconditional: 1434] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 65, Positive conditional cache size: 0, Positive unconditional cache size: 65, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: 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, 202 locations, 17 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: 18.8s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1465 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1275 mSDsluCounter, 209 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 177 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1857 IncrementalHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 32 mSDtfsCounter, 1857 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237occurred in iteration=11, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 149 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 368 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1092 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 25 InterpolantComputations, 11 PerfectInterpolantSequences, 37/71 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 15:41:24,385 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