./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-node-symm.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 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:00:02,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:00:02,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:00:02,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:00:02,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:00:02,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:00:02,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:00:02,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:00:02,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:00:02,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:00:02,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:00:02,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:00:02,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:00:02,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:00:02,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:00:02,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:00:02,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:00:02,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:00:02,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:00:02,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:00:02,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:00:02,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:00:02,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:00:02,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:00:02,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:00:02,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:00:02,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:00:02,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:00:02,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:00:02,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:00:02,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:00:02,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:00:02,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:00:02,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:00:02,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:00:02,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:00:02,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:00:02,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:00:02,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:00:02,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:00:02,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:00:02,865 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:00:02,902 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:00:02,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:00:02,903 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:00:02,903 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:00:02,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:00:02,904 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:00:02,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:00:02,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:00:02,905 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:00:02,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:00:02,906 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:00:02,907 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:00:02,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:00:02,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:00:02,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:00:02,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:00:02,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:00:02,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:00:02,908 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:00:02,908 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:00:02,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:00:02,908 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:00:02,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:00:02,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:00:02,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:00:02,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:00:02,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:00:02,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:00:02,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:00:02,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:00:02,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:00:02,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:00:02,911 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:00:02,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:00:02,911 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:00:02,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:00:02,911 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:00:02,912 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:00:03,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:00:03,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:00:03,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:00:03,204 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:00:03,204 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:00:03,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2023-08-30 11:00:04,308 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:00:04,482 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:00:04,482 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2023-08-30 11:00:04,491 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fd7325ed/d1d40d679ad949a5948f3600e0d9c4c4/FLAG7a205197a [2023-08-30 11:00:04,508 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fd7325ed/d1d40d679ad949a5948f3600e0d9c4c4 [2023-08-30 11:00:04,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:00:04,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:00:04,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:00:04,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:00:04,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:00:04,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:00:04" (1/1) ... [2023-08-30 11:00:04,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa395db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:00:04, skipping insertion in model container [2023-08-30 11:00:04,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:00:04" (1/1) ... [2023-08-30 11:00:04,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:00:04,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:00:04,741 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/chl-node-symm.wvr.c[3305,3318] [2023-08-30 11:00:04,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:00:04,768 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:00:04,809 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/chl-node-symm.wvr.c[3305,3318] [2023-08-30 11:00:04,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:00:04,834 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:00:04,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:00:04 WrapperNode [2023-08-30 11:00:04,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:00:04,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:00:04,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:00:04,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:00:04,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:00:04" (1/1) ... [2023-08-30 11:00:04,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:00:04" (1/1) ... [2023-08-30 11:00:04,892 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 340 [2023-08-30 11:00:04,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:00:04,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:00:04,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:00:04,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:00:04,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:00:04" (1/1) ... [2023-08-30 11:00:04,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:00:04" (1/1) ... [2023-08-30 11:00:04,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:00:04" (1/1) ... [2023-08-30 11:00:04,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:00:04" (1/1) ... [2023-08-30 11:00:04,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:00:04" (1/1) ... [2023-08-30 11:00:04,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:00:04" (1/1) ... [2023-08-30 11:00:04,943 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:00:04" (1/1) ... [2023-08-30 11:00:04,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:00:04" (1/1) ... [2023-08-30 11:00:04,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:00:04,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:00:04,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:00:04,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:00:04,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:00:04" (1/1) ... [2023-08-30 11:00:04,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:00:04,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:00:04,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:00:05,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:00:05,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:00:05,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:00:05,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:00:05,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:00:05,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:00:05,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:00:05,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:00:05,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:00:05,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:00:05,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:00:05,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:00:05,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:00:05,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:00:05,039 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:00:05,183 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:00:05,184 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:00:05,649 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:00:05,664 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:00:05,665 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 11:00:05,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:00:05 BoogieIcfgContainer [2023-08-30 11:00:05,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:00:05,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:00:05,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:00:05,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:00:05,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:00:04" (1/3) ... [2023-08-30 11:00:05,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64053f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:00:05, skipping insertion in model container [2023-08-30 11:00:05,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:00:04" (2/3) ... [2023-08-30 11:00:05,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64053f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:00:05, skipping insertion in model container [2023-08-30 11:00:05,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:00:05" (3/3) ... [2023-08-30 11:00:05,677 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2023-08-30 11:00:05,684 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:00:05,691 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:00:05,691 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-30 11:00:05,691 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:00:05,814 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 11:00:05,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 397 places, 422 transitions, 860 flow [2023-08-30 11:00:06,031 INFO L130 PetriNetUnfolder]: 32/420 cut-off events. [2023-08-30 11:00:06,032 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:00:06,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 420 events. 32/420 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 586 event pairs, 0 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 325. Up to 2 conditions per place. [2023-08-30 11:00:06,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 397 places, 422 transitions, 860 flow [2023-08-30 11:00:06,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 381 places, 405 transitions, 822 flow [2023-08-30 11:00:06,051 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:00:06,064 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 381 places, 405 transitions, 822 flow [2023-08-30 11:00:06,070 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 381 places, 405 transitions, 822 flow [2023-08-30 11:00:06,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 381 places, 405 transitions, 822 flow [2023-08-30 11:00:06,130 INFO L130 PetriNetUnfolder]: 31/405 cut-off events. [2023-08-30 11:00:06,131 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:00:06,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 405 events. 31/405 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 582 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 325. Up to 2 conditions per place. [2023-08-30 11:00:06,149 INFO L119 LiptonReduction]: Number of co-enabled transitions 11900 [2023-08-30 11:00:24,809 INFO L134 LiptonReduction]: Checked pairs total: 14732 [2023-08-30 11:00:24,810 INFO L136 LiptonReduction]: Total number of compositions: 525 [2023-08-30 11:00:24,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:00:24,828 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;@4495039d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:00:24,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-08-30 11:00:24,830 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 11:00:24,830 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:00:24,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:24,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 11:00:24,831 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:24,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:24,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2023-08-30 11:00:24,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:24,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801431933] [2023-08-30 11:00:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:24,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:24,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:24,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801431933] [2023-08-30 11:00:24,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801431933] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:24,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:24,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 11:00:24,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669597255] [2023-08-30 11:00:24,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:24,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 11:00:24,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:24,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 11:00:24,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 11:00:24,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 395 out of 947 [2023-08-30 11:00:24,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 120 flow. Second operand has 2 states, 2 states have (on average 395.5) internal successors, (791), 2 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:24,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:24,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 395 of 947 [2023-08-30 11:00:24,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:25,127 INFO L130 PetriNetUnfolder]: 213/399 cut-off events. [2023-08-30 11:00:25,128 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-30 11:00:25,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 399 events. 213/399 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1555 event pairs, 195 based on Foata normal form. 1/216 useless extension candidates. Maximal degree in co-relation 726. Up to 400 conditions per place. [2023-08-30 11:00:25,131 INFO L137 encePairwiseOnDemand]: 939/947 looper letters, 45 selfloop transitions, 0 changer transitions 1/46 dead transitions. [2023-08-30 11:00:25,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 196 flow [2023-08-30 11:00:25,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 11:00:25,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 11:00:25,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 844 transitions. [2023-08-30 11:00:25,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44561774023231254 [2023-08-30 11:00:25,148 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 844 transitions. [2023-08-30 11:00:25,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 844 transitions. [2023-08-30 11:00:25,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:25,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 844 transitions. [2023-08-30 11:00:25,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 422.0) internal successors, (844), 2 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 947.0) internal successors, (2841), 3 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,166 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 947.0) internal successors, (2841), 3 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,167 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 120 flow. Second operand 2 states and 844 transitions. [2023-08-30 11:00:25,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 196 flow [2023-08-30 11:00:25,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 11:00:25,172 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 93 flow [2023-08-30 11:00:25,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=93, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2023-08-30 11:00:25,177 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2023-08-30 11:00:25,178 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 93 flow [2023-08-30 11:00:25,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 395.5) internal successors, (791), 2 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:25,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:00:25,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:00:25,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:25,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:25,180 INFO L85 PathProgramCache]: Analyzing trace with hash 53570, now seen corresponding path program 1 times [2023-08-30 11:00:25,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:25,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126575747] [2023-08-30 11:00:25,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:25,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:25,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:25,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126575747] [2023-08-30 11:00:25,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126575747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:25,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:25,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:00:25,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515451668] [2023-08-30 11:00:25,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:25,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:25,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:25,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:25,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:00:25,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-08-30 11:00:25,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:25,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-08-30 11:00:25,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:25,477 INFO L130 PetriNetUnfolder]: 213/396 cut-off events. [2023-08-30 11:00:25,477 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:00:25,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 396 events. 213/396 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1532 event pairs, 195 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 804. Up to 396 conditions per place. [2023-08-30 11:00:25,479 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 42 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-30 11:00:25,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 175 flow [2023-08-30 11:00:25,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:25,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:25,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1212 transitions. [2023-08-30 11:00:25,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.426610348468849 [2023-08-30 11:00:25,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1212 transitions. [2023-08-30 11:00:25,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1212 transitions. [2023-08-30 11:00:25,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:25,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1212 transitions. [2023-08-30 11:00:25,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 404.0) internal successors, (1212), 3 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,494 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 93 flow. Second operand 3 states and 1212 transitions. [2023-08-30 11:00:25,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 175 flow [2023-08-30 11:00:25,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 175 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 11:00:25,496 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 91 flow [2023-08-30 11:00:25,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=42, 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=91, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-08-30 11:00:25,497 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -12 predicate places. [2023-08-30 11:00:25,497 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 91 flow [2023-08-30 11:00:25,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:25,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:00:25,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:00:25,499 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:25,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:25,499 INFO L85 PathProgramCache]: Analyzing trace with hash 53574, now seen corresponding path program 1 times [2023-08-30 11:00:25,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:25,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305495852] [2023-08-30 11:00:25,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:25,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:25,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:25,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:25,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305495852] [2023-08-30 11:00:25,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305495852] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:25,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:25,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:00:25,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433465074] [2023-08-30 11:00:25,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:25,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:25,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:25,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:25,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:00:25,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-08-30 11:00:25,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:25,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-08-30 11:00:25,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:25,871 INFO L130 PetriNetUnfolder]: 425/787 cut-off events. [2023-08-30 11:00:25,872 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:00:25,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1603 conditions, 787 events. 425/787 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3709 event pairs, 390 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 1599. Up to 397 conditions per place. [2023-08-30 11:00:25,875 INFO L137 encePairwiseOnDemand]: 939/947 looper letters, 77 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2023-08-30 11:00:25,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 81 transitions, 332 flow [2023-08-30 11:00:25,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:25,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:25,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1252 transitions. [2023-08-30 11:00:25,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44068989792326646 [2023-08-30 11:00:25,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1252 transitions. [2023-08-30 11:00:25,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1252 transitions. [2023-08-30 11:00:25,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:25,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1252 transitions. [2023-08-30 11:00:25,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 417.3333333333333) internal successors, (1252), 3 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,890 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 91 flow. Second operand 3 states and 1252 transitions. [2023-08-30 11:00:25,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 81 transitions, 332 flow [2023-08-30 11:00:25,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 81 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:00:25,892 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 126 flow [2023-08-30 11:00:25,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2023-08-30 11:00:25,893 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -9 predicate places. [2023-08-30 11:00:25,893 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 126 flow [2023-08-30 11:00:25,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:25,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:00:25,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 11:00:25,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:25,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:25,896 INFO L85 PathProgramCache]: Analyzing trace with hash 53569, now seen corresponding path program 1 times [2023-08-30 11:00:25,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:25,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013489262] [2023-08-30 11:00:25,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:25,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:25,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:25,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013489262] [2023-08-30 11:00:25,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013489262] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:25,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:25,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:00:25,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773699722] [2023-08-30 11:00:25,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:25,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:25,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:25,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:25,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:00:25,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 947 [2023-08-30 11:00:25,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 387.6666666666667) internal successors, (1163), 3 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:25,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 947 [2023-08-30 11:00:25,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:26,160 INFO L130 PetriNetUnfolder]: 425/783 cut-off events. [2023-08-30 11:00:26,160 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:00:26,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1611 conditions, 783 events. 425/783 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3664 event pairs, 390 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 1606. Up to 783 conditions per place. [2023-08-30 11:00:26,164 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 43 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-08-30 11:00:26,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 210 flow [2023-08-30 11:00:26,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:26,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1204 transitions. [2023-08-30 11:00:26,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237944385779655 [2023-08-30 11:00:26,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1204 transitions. [2023-08-30 11:00:26,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1204 transitions. [2023-08-30 11:00:26,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:26,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1204 transitions. [2023-08-30 11:00:26,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 401.3333333333333) internal successors, (1204), 3 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:26,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:26,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:26,177 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 126 flow. Second operand 3 states and 1204 transitions. [2023-08-30 11:00:26,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 210 flow [2023-08-30 11:00:26,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:00:26,179 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 116 flow [2023-08-30 11:00:26,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-08-30 11:00:26,180 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2023-08-30 11:00:26,180 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 116 flow [2023-08-30 11:00:26,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 387.6666666666667) internal successors, (1163), 3 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:26,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:26,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:00:26,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 11:00:26,181 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:26,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:26,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1662381, now seen corresponding path program 1 times [2023-08-30 11:00:26,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:26,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074067190] [2023-08-30 11:00:26,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:26,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:26,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:26,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:26,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074067190] [2023-08-30 11:00:26,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074067190] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:00:26,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91839976] [2023-08-30 11:00:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:26,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:00:26,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:00:26,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:00:26,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:00:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:26,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:00:26,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:00:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:26,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:00:26,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:26,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91839976] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:00:26,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:00:26,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:00:26,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214497078] [2023-08-30 11:00:26,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:00:26,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:00:26,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:26,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:00:26,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:00:26,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-08-30 11:00:26,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 390.14285714285717) internal successors, (2731), 7 states have internal predecessors, (2731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:26,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:26,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-08-30 11:00:26,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:27,147 INFO L130 PetriNetUnfolder]: 1067/1956 cut-off events. [2023-08-30 11:00:27,148 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:00:27,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4005 conditions, 1956 events. 1067/1956 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11056 event pairs, 975 based on Foata normal form. 0/1071 useless extension candidates. Maximal degree in co-relation 4000. Up to 393 conditions per place. [2023-08-30 11:00:27,156 INFO L137 encePairwiseOnDemand]: 939/947 looper letters, 170 selfloop transitions, 21 changer transitions 0/191 dead transitions. [2023-08-30 11:00:27,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 191 transitions, 834 flow [2023-08-30 11:00:27,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:00:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:00:27,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2920 transitions. [2023-08-30 11:00:27,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44048876150248906 [2023-08-30 11:00:27,164 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2920 transitions. [2023-08-30 11:00:27,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2920 transitions. [2023-08-30 11:00:27,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:27,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2920 transitions. [2023-08-30 11:00:27,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 417.14285714285717) internal successors, (2920), 7 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:27,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 947.0) internal successors, (7576), 8 states have internal predecessors, (7576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:27,186 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 947.0) internal successors, (7576), 8 states have internal predecessors, (7576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:27,186 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 116 flow. Second operand 7 states and 2920 transitions. [2023-08-30 11:00:27,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 191 transitions, 834 flow [2023-08-30 11:00:27,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 191 transitions, 833 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:00:27,192 INFO L231 Difference]: Finished difference. Result has 53 places, 59 transitions, 254 flow [2023-08-30 11:00:27,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=254, PETRI_PLACES=53, PETRI_TRANSITIONS=59} [2023-08-30 11:00:27,195 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-08-30 11:00:27,195 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 59 transitions, 254 flow [2023-08-30 11:00:27,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 390.14285714285717) internal successors, (2731), 7 states have internal predecessors, (2731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:27,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:27,196 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 11:00:27,206 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 11:00:27,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:00:27,402 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:27,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:27,403 INFO L85 PathProgramCache]: Analyzing trace with hash 51535315, now seen corresponding path program 1 times [2023-08-30 11:00:27,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:27,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108376278] [2023-08-30 11:00:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:27,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:27,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:27,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108376278] [2023-08-30 11:00:27,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108376278] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:00:27,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533205334] [2023-08-30 11:00:27,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:27,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:00:27,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:00:27,491 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:00:27,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:00:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:27,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:00:27,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:00:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:27,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:00:27,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533205334] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:27,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:00:27,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 11:00:27,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289289367] [2023-08-30 11:00:27,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:27,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:00:27,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:27,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:00:27,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:00:27,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-08-30 11:00:27,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 59 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 389.8) internal successors, (1949), 5 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:27,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:27,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-08-30 11:00:27,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:28,163 INFO L130 PetriNetUnfolder]: 1061/1948 cut-off events. [2023-08-30 11:00:28,164 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:00:28,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 1948 events. 1061/1948 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 11020 event pairs, 975 based on Foata normal form. 2/1078 useless extension candidates. Maximal degree in co-relation 4006. Up to 1168 conditions per place. [2023-08-30 11:00:28,173 INFO L137 encePairwiseOnDemand]: 941/947 looper letters, 108 selfloop transitions, 9 changer transitions 0/117 dead transitions. [2023-08-30 11:00:28,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 117 transitions, 572 flow [2023-08-30 11:00:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:00:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:00:28,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2060 transitions. [2023-08-30 11:00:28,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4350580781414995 [2023-08-30 11:00:28,178 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2060 transitions. [2023-08-30 11:00:28,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2060 transitions. [2023-08-30 11:00:28,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:28,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2060 transitions. [2023-08-30 11:00:28,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:28,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 947.0) internal successors, (5682), 6 states have internal predecessors, (5682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:28,190 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 947.0) internal successors, (5682), 6 states have internal predecessors, (5682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:28,190 INFO L175 Difference]: Start difference. First operand has 53 places, 59 transitions, 254 flow. Second operand 5 states and 2060 transitions. [2023-08-30 11:00:28,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 117 transitions, 572 flow [2023-08-30 11:00:28,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 117 transitions, 553 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 11:00:28,193 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 199 flow [2023-08-30 11:00:28,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2023-08-30 11:00:28,194 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-08-30 11:00:28,194 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 199 flow [2023-08-30 11:00:28,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 389.8) internal successors, (1949), 5 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:28,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:28,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:00:28,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:00:28,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 11:00:28,402 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:28,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:28,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1664174, now seen corresponding path program 1 times [2023-08-30 11:00:28,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:28,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449360082] [2023-08-30 11:00:28,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:28,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:28,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:28,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449360082] [2023-08-30 11:00:28,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449360082] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:28,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:28,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:00:28,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220102935] [2023-08-30 11:00:28,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:28,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:28,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:28,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:28,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:00:28,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 947 [2023-08-30 11:00:28,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:28,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:28,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 947 [2023-08-30 11:00:28,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:28,812 INFO L130 PetriNetUnfolder]: 1061/1943 cut-off events. [2023-08-30 11:00:28,813 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 11:00:28,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4003 conditions, 1943 events. 1061/1943 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 11081 event pairs, 975 based on Foata normal form. 0/1078 useless extension candidates. Maximal degree in co-relation 3994. Up to 1943 conditions per place. [2023-08-30 11:00:28,821 INFO L137 encePairwiseOnDemand]: 945/947 looper letters, 49 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-08-30 11:00:28,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 50 transitions, 297 flow [2023-08-30 11:00:28,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:28,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:28,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1200 transitions. [2023-08-30 11:00:28,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42238648363252373 [2023-08-30 11:00:28,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1200 transitions. [2023-08-30 11:00:28,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1200 transitions. [2023-08-30 11:00:28,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:28,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1200 transitions. [2023-08-30 11:00:28,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:28,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:28,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:28,833 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 199 flow. Second operand 3 states and 1200 transitions. [2023-08-30 11:00:28,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 50 transitions, 297 flow [2023-08-30 11:00:28,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 284 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 11:00:28,836 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 186 flow [2023-08-30 11:00:28,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-08-30 11:00:28,836 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-08-30 11:00:28,837 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 186 flow [2023-08-30 11:00:28,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:28,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:28,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:00:28,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:00:28,838 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:28,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:28,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1664117, now seen corresponding path program 1 times [2023-08-30 11:00:28,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:28,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62955505] [2023-08-30 11:00:28,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:28,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:28,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:28,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62955505] [2023-08-30 11:00:28,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62955505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:28,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:28,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:00:28,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711284367] [2023-08-30 11:00:28,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:28,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:28,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:28,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:28,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:00:28,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-08-30 11:00:28,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:28,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:28,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-08-30 11:00:28,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:29,246 INFO L130 PetriNetUnfolder]: 1061/1938 cut-off events. [2023-08-30 11:00:29,247 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 11:00:29,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3987 conditions, 1938 events. 1061/1938 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 11053 event pairs, 975 based on Foata normal form. 0/1078 useless extension candidates. Maximal degree in co-relation 3978. Up to 1938 conditions per place. [2023-08-30 11:00:29,257 INFO L137 encePairwiseOnDemand]: 945/947 looper letters, 48 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-08-30 11:00:29,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 282 flow [2023-08-30 11:00:29,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:29,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1205 transitions. [2023-08-30 11:00:29,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42414642731432595 [2023-08-30 11:00:29,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1205 transitions. [2023-08-30 11:00:29,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1205 transitions. [2023-08-30 11:00:29,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:29,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1205 transitions. [2023-08-30 11:00:29,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 401.6666666666667) internal successors, (1205), 3 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:29,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:29,269 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:29,269 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 186 flow. Second operand 3 states and 1205 transitions. [2023-08-30 11:00:29,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 282 flow [2023-08-30 11:00:29,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:00:29,271 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 185 flow [2023-08-30 11:00:29,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2023-08-30 11:00:29,272 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-08-30 11:00:29,272 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 185 flow [2023-08-30 11:00:29,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:29,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:29,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 11:00:29,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 11:00:29,273 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:29,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash 51594369, now seen corresponding path program 1 times [2023-08-30 11:00:29,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:29,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297594032] [2023-08-30 11:00:29,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:29,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:29,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:29,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:29,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297594032] [2023-08-30 11:00:29,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297594032] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:29,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:29,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:00:29,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616728491] [2023-08-30 11:00:29,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:29,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:29,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:29,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:29,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:00:29,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-08-30 11:00:29,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 390.3333333333333) internal successors, (1171), 3 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:29,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:29,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-08-30 11:00:29,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:29,923 INFO L130 PetriNetUnfolder]: 2111/3833 cut-off events. [2023-08-30 11:00:29,923 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 11:00:29,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7838 conditions, 3833 events. 2111/3833 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 25124 event pairs, 1950 based on Foata normal form. 0/2133 useless extension candidates. Maximal degree in co-relation 7829. Up to 1939 conditions per place. [2023-08-30 11:00:29,942 INFO L137 encePairwiseOnDemand]: 939/947 looper letters, 71 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2023-08-30 11:00:29,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 75 transitions, 390 flow [2023-08-30 11:00:29,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:29,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1234 transitions. [2023-08-30 11:00:29,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4343541006687786 [2023-08-30 11:00:29,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1234 transitions. [2023-08-30 11:00:29,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1234 transitions. [2023-08-30 11:00:29,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:29,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1234 transitions. [2023-08-30 11:00:29,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:29,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:29,954 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:29,954 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 185 flow. Second operand 3 states and 1234 transitions. [2023-08-30 11:00:29,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 75 transitions, 390 flow [2023-08-30 11:00:29,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 75 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:00:29,956 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 220 flow [2023-08-30 11:00:29,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2023-08-30 11:00:29,957 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2023-08-30 11:00:29,957 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 220 flow [2023-08-30 11:00:29,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.3333333333333) internal successors, (1171), 3 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:29,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:29,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:00:29,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 11:00:29,958 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:29,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:29,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1599428058, now seen corresponding path program 1 times [2023-08-30 11:00:29,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:29,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850454336] [2023-08-30 11:00:29,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:29,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:30,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:30,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:30,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850454336] [2023-08-30 11:00:30,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850454336] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:00:30,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211651999] [2023-08-30 11:00:30,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:30,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:00:30,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:00:30,004 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:00:30,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:00:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:30,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:00:30,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:00:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:00:30,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:00:30,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211651999] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:30,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:00:30,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 11:00:30,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171989622] [2023-08-30 11:00:30,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:30,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:30,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:30,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:30,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:00:30,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 947 [2023-08-30 11:00:30,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 388.6666666666667) internal successors, (1166), 3 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:30,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:30,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 947 [2023-08-30 11:00:30,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:30,823 INFO L130 PetriNetUnfolder]: 2110/3832 cut-off events. [2023-08-30 11:00:30,823 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 11:00:30,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7911 conditions, 3832 events. 2110/3832 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 25081 event pairs, 1950 based on Foata normal form. 1/2153 useless extension candidates. Maximal degree in co-relation 7901. Up to 3832 conditions per place. [2023-08-30 11:00:30,842 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 49 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-08-30 11:00:30,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 318 flow [2023-08-30 11:00:30,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:30,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:30,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1200 transitions. [2023-08-30 11:00:30,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42238648363252373 [2023-08-30 11:00:30,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1200 transitions. [2023-08-30 11:00:30,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1200 transitions. [2023-08-30 11:00:30,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:30,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1200 transitions. [2023-08-30 11:00:30,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:30,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:30,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:30,853 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 220 flow. Second operand 3 states and 1200 transitions. [2023-08-30 11:00:30,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 318 flow [2023-08-30 11:00:30,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:00:30,855 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 212 flow [2023-08-30 11:00:30,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-08-30 11:00:30,855 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2023-08-30 11:00:30,855 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 212 flow [2023-08-30 11:00:30,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 388.6666666666667) internal successors, (1166), 3 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:30,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:30,856 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:00:30,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 11:00:31,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:00:31,062 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:31,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:31,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2014039290, now seen corresponding path program 2 times [2023-08-30 11:00:31,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:31,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265639155] [2023-08-30 11:00:31,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:31,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:31,124 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:31,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:31,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265639155] [2023-08-30 11:00:31,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265639155] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:00:31,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783830762] [2023-08-30 11:00:31,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:00:31,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:00:31,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:00:31,127 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:00:31,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:00:31,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:00:31,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:00:31,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:00:31,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:00:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:00:31,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:00:31,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783830762] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:31,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:00:31,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:00:31,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179611556] [2023-08-30 11:00:31,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:31,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:31,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:31,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:31,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:00:31,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 947 [2023-08-30 11:00:31,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:31,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:31,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 947 [2023-08-30 11:00:31,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:31,826 INFO L130 PetriNetUnfolder]: 2110/3830 cut-off events. [2023-08-30 11:00:31,826 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 11:00:31,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7881 conditions, 3830 events. 2110/3830 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 25121 event pairs, 1950 based on Foata normal form. 2/2142 useless extension candidates. Maximal degree in co-relation 7871. Up to 3830 conditions per place. [2023-08-30 11:00:31,843 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 48 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-08-30 11:00:31,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 290 flow [2023-08-30 11:00:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:31,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1210 transitions. [2023-08-30 11:00:31,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4259063709961281 [2023-08-30 11:00:31,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1210 transitions. [2023-08-30 11:00:31,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1210 transitions. [2023-08-30 11:00:31,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:31,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1210 transitions. [2023-08-30 11:00:31,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 403.3333333333333) internal successors, (1210), 3 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:31,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:31,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:31,855 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 212 flow. Second operand 3 states and 1210 transitions. [2023-08-30 11:00:31,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 290 flow [2023-08-30 11:00:31,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 260 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-30 11:00:31,856 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 164 flow [2023-08-30 11:00:31,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2023-08-30 11:00:31,857 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-08-30 11:00:31,857 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 164 flow [2023-08-30 11:00:31,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:31,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:31,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:00:31,864 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 11:00:32,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:00:32,063 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:32,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:32,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2012210157, now seen corresponding path program 1 times [2023-08-30 11:00:32,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:32,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4802703] [2023-08-30 11:00:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:32,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:32,106 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 11:00:32,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:32,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4802703] [2023-08-30 11:00:32,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4802703] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:00:32,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772735146] [2023-08-30 11:00:32,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:32,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:00:32,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:00:32,109 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:00:32,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:00:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:32,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:00:32,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:00:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:00:32,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:00:32,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772735146] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:32,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:00:32,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-08-30 11:00:32,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049848737] [2023-08-30 11:00:32,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:32,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:00:32,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:32,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:00:32,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:00:32,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 381 out of 947 [2023-08-30 11:00:32,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 382.5) internal successors, (1530), 4 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:32,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:32,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 381 of 947 [2023-08-30 11:00:32,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:32,847 INFO L130 PetriNetUnfolder]: 1689/3067 cut-off events. [2023-08-30 11:00:32,847 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:00:32,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6302 conditions, 3067 events. 1689/3067 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 19397 event pairs, 1560 based on Foata normal form. 1/1715 useless extension candidates. Maximal degree in co-relation 6296. Up to 3062 conditions per place. [2023-08-30 11:00:32,862 INFO L137 encePairwiseOnDemand]: 942/947 looper letters, 42 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2023-08-30 11:00:32,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 262 flow [2023-08-30 11:00:32,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:00:32,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:00:32,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1562 transitions. [2023-08-30 11:00:32,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4123548046462513 [2023-08-30 11:00:32,866 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1562 transitions. [2023-08-30 11:00:32,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1562 transitions. [2023-08-30 11:00:32,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:32,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1562 transitions. [2023-08-30 11:00:32,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 390.5) internal successors, (1562), 4 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:32,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:32,876 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:32,876 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 164 flow. Second operand 4 states and 1562 transitions. [2023-08-30 11:00:32,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 262 flow [2023-08-30 11:00:32,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 261 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:00:32,878 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 186 flow [2023-08-30 11:00:32,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-08-30 11:00:32,878 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2023-08-30 11:00:32,878 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 186 flow [2023-08-30 11:00:32,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 382.5) internal successors, (1530), 4 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:32,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:32,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:00:32,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 11:00:33,084 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,SelfDestructingSolverStorable11 [2023-08-30 11:00:33,085 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:33,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:33,085 INFO L85 PathProgramCache]: Analyzing trace with hash 2045520536, now seen corresponding path program 1 times [2023-08-30 11:00:33,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:33,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007847663] [2023-08-30 11:00:33,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:33,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:33,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:00:33,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:33,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007847663] [2023-08-30 11:00:33,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007847663] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:00:33,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629758653] [2023-08-30 11:00:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:33,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:00:33,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:00:33,165 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 11:00:33,184 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 11:00:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:33,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:00:33,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:00:33,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:00:33,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:00:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:00:33,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629758653] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:00:33,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:00:33,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 11:00:33,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532362305] [2023-08-30 11:00:33,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:00:33,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:00:33,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:33,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:00:33,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:00:33,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-08-30 11:00:33,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 390.7142857142857) internal successors, (2735), 7 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:33,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:33,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-08-30 11:00:33,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:34,593 INFO L130 PetriNetUnfolder]: 4233/7639 cut-off events. [2023-08-30 11:00:34,593 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 11:00:34,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15664 conditions, 7639 events. 4233/7639 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 56012 event pairs, 3900 based on Foata normal form. 0/4259 useless extension candidates. Maximal degree in co-relation 15657. Up to 1544 conditions per place. [2023-08-30 11:00:34,624 INFO L137 encePairwiseOnDemand]: 939/947 looper letters, 135 selfloop transitions, 21 changer transitions 0/156 dead transitions. [2023-08-30 11:00:34,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 156 transitions, 754 flow [2023-08-30 11:00:34,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:00:34,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:00:34,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2874 transitions. [2023-08-30 11:00:34,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43354955498566905 [2023-08-30 11:00:34,632 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2874 transitions. [2023-08-30 11:00:34,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2874 transitions. [2023-08-30 11:00:34,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:34,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2874 transitions. [2023-08-30 11:00:34,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 410.57142857142856) internal successors, (2874), 7 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:34,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 947.0) internal successors, (7576), 8 states have internal predecessors, (7576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:34,646 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 947.0) internal successors, (7576), 8 states have internal predecessors, (7576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:34,646 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 186 flow. Second operand 7 states and 2874 transitions. [2023-08-30 11:00:34,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 156 transitions, 754 flow [2023-08-30 11:00:34,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 156 transitions, 740 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 11:00:34,649 INFO L231 Difference]: Finished difference. Result has 58 places, 64 transitions, 311 flow [2023-08-30 11:00:34,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=311, PETRI_PLACES=58, PETRI_TRANSITIONS=64} [2023-08-30 11:00:34,649 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-08-30 11:00:34,650 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 64 transitions, 311 flow [2023-08-30 11:00:34,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 390.7142857142857) internal successors, (2735), 7 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:34,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:34,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:00:34,657 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 11:00:34,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:00:34,858 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:34,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:34,858 INFO L85 PathProgramCache]: Analyzing trace with hash 2045520537, now seen corresponding path program 1 times [2023-08-30 11:00:34,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:34,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204920809] [2023-08-30 11:00:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:34,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:00:34,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:34,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204920809] [2023-08-30 11:00:34,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204920809] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:34,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:34,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:00:34,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899796640] [2023-08-30 11:00:34,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:34,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:34,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:34,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:34,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:00:34,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-08-30 11:00:34,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 64 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 391.3333333333333) internal successors, (1174), 3 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:34,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:34,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-08-30 11:00:34,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:35,963 INFO L130 PetriNetUnfolder]: 4209/7607 cut-off events. [2023-08-30 11:00:35,963 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 11:00:35,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15684 conditions, 7607 events. 4209/7607 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 55954 event pairs, 3900 based on Foata normal form. 8/4287 useless extension candidates. Maximal degree in co-relation 15674. Up to 7592 conditions per place. [2023-08-30 11:00:35,993 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 11:00:35,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 369 flow [2023-08-30 11:00:35,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:35,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1202 transitions. [2023-08-30 11:00:35,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230904611052446 [2023-08-30 11:00:35,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1202 transitions. [2023-08-30 11:00:35,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1202 transitions. [2023-08-30 11:00:35,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:35,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1202 transitions. [2023-08-30 11:00:36,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 400.6666666666667) internal successors, (1202), 3 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:36,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:36,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:36,004 INFO L175 Difference]: Start difference. First operand has 58 places, 64 transitions, 311 flow. Second operand 3 states and 1202 transitions. [2023-08-30 11:00:36,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 369 flow [2023-08-30 11:00:36,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 350 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 11:00:36,006 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 240 flow [2023-08-30 11:00:36,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2023-08-30 11:00:36,006 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-08-30 11:00:36,007 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 240 flow [2023-08-30 11:00:36,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 391.3333333333333) internal successors, (1174), 3 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:36,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:36,007 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 11:00:36,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 11:00:36,008 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:36,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:36,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1108892995, now seen corresponding path program 2 times [2023-08-30 11:00:36,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:36,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186202807] [2023-08-30 11:00:36,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:36,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 11:00:36,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:36,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186202807] [2023-08-30 11:00:36,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186202807] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:00:36,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19716683] [2023-08-30 11:00:36,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:00:36,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:00:36,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:00:36,113 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 11:00:36,116 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 11:00:36,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:00:36,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:00:36,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:00:36,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:00:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-30 11:00:36,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:00:36,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19716683] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:36,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:00:36,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-30 11:00:36,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333384435] [2023-08-30 11:00:36,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:36,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:36,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:36,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:36,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:00:36,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 947 [2023-08-30 11:00:36,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:36,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:36,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 947 [2023-08-30 11:00:36,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:37,267 INFO L130 PetriNetUnfolder]: 4209/7599 cut-off events. [2023-08-30 11:00:37,267 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2023-08-30 11:00:37,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15597 conditions, 7599 events. 4209/7599 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 55827 event pairs, 3900 based on Foata normal form. 8/4283 useless extension candidates. Maximal degree in co-relation 15586. Up to 7584 conditions per place. [2023-08-30 11:00:37,300 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 53 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-08-30 11:00:37,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 328 flow [2023-08-30 11:00:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:37,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1206 transitions. [2023-08-30 11:00:37,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244984160506864 [2023-08-30 11:00:37,304 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1206 transitions. [2023-08-30 11:00:37,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1206 transitions. [2023-08-30 11:00:37,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:37,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1206 transitions. [2023-08-30 11:00:37,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:37,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:37,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:37,312 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 240 flow. Second operand 3 states and 1206 transitions. [2023-08-30 11:00:37,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 328 flow [2023-08-30 11:00:37,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 301 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-30 11:00:37,315 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 195 flow [2023-08-30 11:00:37,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2023-08-30 11:00:37,315 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-08-30 11:00:37,315 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 195 flow [2023-08-30 11:00:37,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:37,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:37,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:00:37,327 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 11:00:37,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:00:37,523 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:37,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:37,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1976135947, now seen corresponding path program 1 times [2023-08-30 11:00:37,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:37,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828735512] [2023-08-30 11:00:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:37,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:37,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:00:37,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:37,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828735512] [2023-08-30 11:00:37,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828735512] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:37,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:37,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:00:37,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502703324] [2023-08-30 11:00:37,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:37,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:00:37,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:37,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:00:37,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:00:37,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 381 out of 947 [2023-08-30 11:00:37,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 383.75) internal successors, (1535), 4 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:37,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:37,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 381 of 947 [2023-08-30 11:00:37,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:38,692 INFO L130 PetriNetUnfolder]: 4205/7595 cut-off events. [2023-08-30 11:00:38,692 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 11:00:38,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15533 conditions, 7595 events. 4205/7595 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 55746 event pairs, 3900 based on Foata normal form. 0/4259 useless extension candidates. Maximal degree in co-relation 15526. Up to 7591 conditions per place. [2023-08-30 11:00:38,730 INFO L137 encePairwiseOnDemand]: 943/947 looper letters, 50 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-08-30 11:00:38,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 297 flow [2023-08-30 11:00:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:00:38,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:00:38,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1557 transitions. [2023-08-30 11:00:38,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41103484688489966 [2023-08-30 11:00:38,735 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1557 transitions. [2023-08-30 11:00:38,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1557 transitions. [2023-08-30 11:00:38,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:38,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1557 transitions. [2023-08-30 11:00:38,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 389.25) internal successors, (1557), 4 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:38,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:38,744 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:38,745 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 195 flow. Second operand 4 states and 1557 transitions. [2023-08-30 11:00:38,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 297 flow [2023-08-30 11:00:38,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 53 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:00:38,746 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 196 flow [2023-08-30 11:00:38,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2023-08-30 11:00:38,748 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-08-30 11:00:38,748 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 196 flow [2023-08-30 11:00:38,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 383.75) internal successors, (1535), 4 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:38,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:38,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:00:38,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 11:00:38,749 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:38,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:38,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1840415850, now seen corresponding path program 1 times [2023-08-30 11:00:38,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:38,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641066699] [2023-08-30 11:00:38,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:38,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:38,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:00:38,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:38,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641066699] [2023-08-30 11:00:38,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641066699] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:38,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:38,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:00:38,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605756354] [2023-08-30 11:00:38,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:38,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:00:38,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:38,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:00:38,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:00:38,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 381 out of 947 [2023-08-30 11:00:38,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:38,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:38,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 381 of 947 [2023-08-30 11:00:38,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:39,662 INFO L130 PetriNetUnfolder]: 3369/6091 cut-off events. [2023-08-30 11:00:39,662 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 11:00:39,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12486 conditions, 6091 events. 3369/6091 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 43310 event pairs, 3120 based on Foata normal form. 4/3423 useless extension candidates. Maximal degree in co-relation 12479. Up to 6075 conditions per place. [2023-08-30 11:00:39,717 INFO L137 encePairwiseOnDemand]: 943/947 looper letters, 47 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2023-08-30 11:00:39,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 302 flow [2023-08-30 11:00:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:00:39,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:00:39,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1557 transitions. [2023-08-30 11:00:39,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41103484688489966 [2023-08-30 11:00:39,721 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1557 transitions. [2023-08-30 11:00:39,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1557 transitions. [2023-08-30 11:00:39,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:39,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1557 transitions. [2023-08-30 11:00:39,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 389.25) internal successors, (1557), 4 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:39,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:39,729 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:39,729 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 196 flow. Second operand 4 states and 1557 transitions. [2023-08-30 11:00:39,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 302 flow [2023-08-30 11:00:39,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 296 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 11:00:39,731 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 209 flow [2023-08-30 11:00:39,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-08-30 11:00:39,731 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-08-30 11:00:39,731 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 209 flow [2023-08-30 11:00:39,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:39,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:39,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:00:39,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 11:00:39,732 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:00:39,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:39,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1414178633, now seen corresponding path program 1 times [2023-08-30 11:00:39,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:39,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294684206] [2023-08-30 11:00:39,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:39,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:00:40,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:40,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294684206] [2023-08-30 11:00:40,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294684206] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:00:40,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513270771] [2023-08-30 11:00:40,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:40,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:00:40,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:00:40,581 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 11:00:40,608 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 11:00:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:40,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-30 11:00:40,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:00:40,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 11:00:40,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 11:00:40,901 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 11:00:40,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 11:00:40,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 11:00:41,033 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-30 11:00:41,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:00:41,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 11:00:41,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:00:41,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 11:00:41,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:00:41,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 11:00:41,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:00:41,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:01:01,800 WARN L222 SmtUtils]: Spent 20.13s on a formula simplification. DAG size of input: 57 DAG size of output: 51 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 11:01:01,921 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ (* c_~id_3~0 4) c_~get_5~0.offset))) (and (forall ((v_ArrVal_459 (Array Int Int)) (~get_2~0.base Int) (~get_2~0.offset Int) (~contains_key_1~0.offset Int) (~id_0~0 Int) (~contains_key_1~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (let ((.cse0 (select (select .cse1 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (<= .cse0 0) (< 9223372039002259455 .cse0) (not (= (mod (select (select .cse1 ~contains_key_1~0.base) (+ ~id_0~0 ~contains_key_1~0.offset)) 256) 0)) (<= (select (select .cse1 c_~get_5~0.base) .cse2) (+ 2147483647 .cse0)))))) (forall ((v_ArrVal_459 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (or (forall ((~contains_key_4~0.base Int) (~contains_key_4~0.offset Int)) (not (= (mod (select (select .cse3 ~contains_key_4~0.base) (+ ~contains_key_4~0.offset c_~id_3~0)) 256) 0))) (forall ((~get_2~0.base Int) (~get_2~0.offset Int) (~id_0~0 Int)) (let ((.cse4 (select (select .cse3 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (<= .cse4 0) (< 9223372039002259455 .cse4) (<= (select (select .cse3 c_~get_5~0.base) .cse2) (+ 2147483647 .cse4)))))))) (forall ((v_ArrVal_459 (Array Int Int)) (~get_2~0.base Int) (~get_2~0.offset Int) (~id_0~0 Int)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (let ((.cse5 (select (select .cse6 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (< .cse5 0) (< 0 .cse5) (<= (select (select .cse6 c_~get_5~0.base) .cse2) (+ 2147483647 .cse5)))))))) is different from false [2023-08-30 11:01:02,079 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ (* c_~id_3~0 4) c_~get_5~0.offset))) (and (forall ((v_ArrVal_458 (Array Int Int)) (v_ArrVal_459 (Array Int Int)) (~get_2~0.base Int) (~get_2~0.offset Int) (~id_0~0 Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_458) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (let ((.cse0 (select (select .cse1 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (< .cse0 0) (<= (select (select .cse1 c_~get_5~0.base) .cse2) (+ .cse0 2147483647)) (< 0 .cse0))))) (forall ((v_ArrVal_458 (Array Int Int)) (v_ArrVal_459 (Array Int Int))) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_458) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (or (forall ((~contains_key_4~0.base Int) (~contains_key_4~0.offset Int)) (not (= (mod (select (select .cse3 ~contains_key_4~0.base) (+ ~contains_key_4~0.offset c_~id_3~0)) 256) 0))) (forall ((~get_2~0.base Int) (~get_2~0.offset Int) (~id_0~0 Int)) (let ((.cse4 (select (select .cse3 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (<= .cse4 0) (<= (select (select .cse3 c_~get_5~0.base) .cse2) (+ .cse4 2147483647)) (< 9223372039002259455 .cse4))))))) (forall ((v_ArrVal_458 (Array Int Int)) (v_ArrVal_459 (Array Int Int)) (~get_2~0.base Int) (~get_2~0.offset Int) (~contains_key_1~0.offset Int) (~id_0~0 Int) (~contains_key_1~0.base Int)) (let ((.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_458) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (let ((.cse6 (select (select .cse5 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (not (= (mod (select (select .cse5 ~contains_key_1~0.base) (+ ~id_0~0 ~contains_key_1~0.offset)) 256) 0)) (<= .cse6 0) (<= (select (select .cse5 c_~get_5~0.base) .cse2) (+ .cse6 2147483647)) (< 9223372039002259455 .cse6))))))) is different from false [2023-08-30 11:01:02,165 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ (* c_~id_3~0 4) c_~get_5~0.offset))) (and (forall ((v_ArrVal_458 (Array Int Int)) (v_ArrVal_457 (Array Int Int)) (v_ArrVal_459 (Array Int Int)) (~get_2~0.base Int) (~get_2~0.offset Int) (~contains_key_1~0.offset Int) (~id_0~0 Int) (~contains_key_1~0.base Int)) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_457) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_458) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (let ((.cse0 (select (select .cse1 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (<= .cse0 0) (<= (select (select .cse1 c_~get_5~0.base) .cse2) (+ 2147483647 .cse0)) (< 9223372039002259455 .cse0) (not (= (mod (select (select .cse1 ~contains_key_1~0.base) (+ ~id_0~0 ~contains_key_1~0.offset)) 256) 0)))))) (forall ((v_ArrVal_458 (Array Int Int)) (v_ArrVal_457 (Array Int Int)) (v_ArrVal_459 (Array Int Int))) (let ((.cse4 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_457) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_458) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (or (forall ((~get_2~0.base Int) (~get_2~0.offset Int) (~id_0~0 Int)) (let ((.cse3 (select (select .cse4 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (<= .cse3 0) (<= (select (select .cse4 c_~get_5~0.base) .cse2) (+ 2147483647 .cse3)) (< 9223372039002259455 .cse3)))) (forall ((~contains_key_4~0.base Int) (~contains_key_4~0.offset Int)) (not (= (mod (select (select .cse4 ~contains_key_4~0.base) (+ ~contains_key_4~0.offset c_~id_3~0)) 256) 0)))))) (forall ((v_ArrVal_458 (Array Int Int)) (v_ArrVal_457 (Array Int Int)) (v_ArrVal_459 (Array Int Int)) (~get_2~0.base Int) (~get_2~0.offset Int) (~id_0~0 Int)) (let ((.cse6 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_457) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_458) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (let ((.cse5 (select (select .cse6 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (< .cse5 0) (<= (select (select .cse6 c_~get_5~0.base) .cse2) (+ 2147483647 .cse5)) (< 0 .cse5))))))) is different from false [2023-08-30 11:01:03,569 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:01:03,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 538 treesize of output 383 [2023-08-30 11:01:04,192 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:01:04,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 2802870 treesize of output 2700538 [2023-08-30 11:01:10,979 WARN L222 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 4262 DAG size of output: 1136 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-08-30 11:01:11,095 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:01:11,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22510 treesize of output 22345 [2023-08-30 11:01:11,555 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:01:11,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22302 treesize of output 21929 [2023-08-30 11:01:11,958 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:01:11,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21886 treesize of output 20265 [2023-08-30 11:01:12,394 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:01:12,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20222 treesize of output 19433 [2023-08-30 11:01:12,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:01:12,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 19390 treesize of output 19225 [2023-08-30 11:01:13,287 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:01:13,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 19182 treesize of output 18809 [2023-08-30 11:01:13,755 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:01:13,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 18766 treesize of output 17977 [2023-08-30 11:01:14,210 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:01:14,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17934 treesize of output 16313 [2023-08-30 11:01:14,674 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:01:14,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16270 treesize of output 16083 [2023-08-30 11:01:15,142 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:01:15,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16066 treesize of output 15267 [2023-08-30 11:01:15,608 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:01:15,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15250 treesize of output 13635 [2023-08-30 11:01:16,084 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:01:16,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13618 treesize of output 13227 Killed by 15