./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i --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/goblint-regression/28-race_reach_77-tricky_address4_racing.i -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 dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe --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 10:22:23,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:22:23,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:22:23,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:22:23,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:22:23,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:22:23,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:22:23,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:22:23,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:22:23,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:22:23,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:22:23,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:22:23,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:22:23,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:22:23,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:22:23,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:22:23,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:22:23,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:22:23,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:22:23,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:22:23,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:22:23,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:22:23,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:22:23,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:22:23,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:22:23,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:22:23,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:22:23,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:22:23,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:22:23,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:22:23,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:22:23,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:22:23,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:22:23,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:22:23,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:22:23,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:22:23,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:22:23,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:22:23,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:22:23,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:22:23,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:22:23,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:22:23,959 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:22:23,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:22:23,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:22:23,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:22:23,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:22:23,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:22:23,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:22:23,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:22:23,964 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:22:23,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:22:23,964 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:22:23,964 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:22:23,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:22:23,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:22:23,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:22:23,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:22:23,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:22:23,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:22:23,965 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:22:23,966 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:22:23,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:22:23,966 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:22:23,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:22:23,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:22:23,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:22:23,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:22:23,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:22:23,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:22:23,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:22:23,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:22:23,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:22:23,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:22:23,967 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:22:23,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:22:23,968 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:22:23,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:22:23,968 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:22:23,968 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:22:24,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:22:24,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:22:24,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:22:24,210 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:22:24,210 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:22:24,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2023-08-30 10:22:25,406 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:22:25,634 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:22:25,634 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2023-08-30 10:22:25,643 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4627d0def/96110d7e5e0c4848a21f551a70fc24ae/FLAG9771656d4 [2023-08-30 10:22:25,653 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4627d0def/96110d7e5e0c4848a21f551a70fc24ae [2023-08-30 10:22:25,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:22:25,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:22:25,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:22:25,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:22:25,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:22:25,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:22:25" (1/1) ... [2023-08-30 10:22:25,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@758ddc59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:25, skipping insertion in model container [2023-08-30 10:22:25,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:22:25" (1/1) ... [2023-08-30 10:22:25,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:22:25,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:22:25,959 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i[41323,41336] [2023-08-30 10:22:25,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:22:26,002 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:22:26,031 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i[41323,41336] [2023-08-30 10:22:26,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:22:26,080 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:22:26,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:26 WrapperNode [2023-08-30 10:22:26,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:22:26,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:22:26,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:22:26,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:22:26,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:26" (1/1) ... [2023-08-30 10:22:26,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:26" (1/1) ... [2023-08-30 10:22:26,117 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 209 [2023-08-30 10:22:26,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:22:26,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:22:26,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:22:26,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:22:26,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:26" (1/1) ... [2023-08-30 10:22:26,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:26" (1/1) ... [2023-08-30 10:22:26,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:26" (1/1) ... [2023-08-30 10:22:26,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:26" (1/1) ... [2023-08-30 10:22:26,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:26" (1/1) ... [2023-08-30 10:22:26,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:26" (1/1) ... [2023-08-30 10:22:26,142 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:26" (1/1) ... [2023-08-30 10:22:26,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:26" (1/1) ... [2023-08-30 10:22:26,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:22:26,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:22:26,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:22:26,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:22:26,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:26" (1/1) ... [2023-08-30 10:22:26,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:22:26,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:22:26,190 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 10:22:26,205 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 10:22:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:22:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:22:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:22:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:22:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:22:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:22:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:22:26,217 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:22:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:22:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:22:26,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:22:26,218 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 10:22:26,353 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:22:26,354 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:22:26,605 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:22:26,612 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:22:26,612 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-30 10:22:26,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:22:26 BoogieIcfgContainer [2023-08-30 10:22:26,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:22:26,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:22:26,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:22:26,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:22:26,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:22:25" (1/3) ... [2023-08-30 10:22:26,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1967664f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:22:26, skipping insertion in model container [2023-08-30 10:22:26,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:22:26" (2/3) ... [2023-08-30 10:22:26,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1967664f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:22:26, skipping insertion in model container [2023-08-30 10:22:26,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:22:26" (3/3) ... [2023-08-30 10:22:26,634 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2023-08-30 10:22:26,640 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:22:26,646 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:22:26,647 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 10:22:26,647 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:22:26,701 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 10:22:26,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 223 transitions, 454 flow [2023-08-30 10:22:26,786 INFO L130 PetriNetUnfolder]: 45/300 cut-off events. [2023-08-30 10:22:26,787 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 10:22:26,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 300 events. 45/300 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 961 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2023-08-30 10:22:26,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 223 transitions, 454 flow [2023-08-30 10:22:26,801 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 220 transitions, 448 flow [2023-08-30 10:22:26,803 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:22:26,810 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 220 transitions, 448 flow [2023-08-30 10:22:26,812 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 220 transitions, 448 flow [2023-08-30 10:22:26,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 220 transitions, 448 flow [2023-08-30 10:22:26,845 INFO L130 PetriNetUnfolder]: 44/297 cut-off events. [2023-08-30 10:22:26,846 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 10:22:26,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 297 events. 44/297 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 962 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2023-08-30 10:22:26,852 INFO L119 LiptonReduction]: Number of co-enabled transitions 14268 [2023-08-30 10:22:29,760 INFO L134 LiptonReduction]: Checked pairs total: 24711 [2023-08-30 10:22:29,760 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-08-30 10:22:29,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:22:29,776 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;@710f78fb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:22:29,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-30 10:22:29,783 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 10:22:29,783 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:22:29,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:29,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:22:29,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:22:29,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:29,791 INFO L85 PathProgramCache]: Analyzing trace with hash 28157, now seen corresponding path program 1 times [2023-08-30 10:22:29,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:29,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503996760] [2023-08-30 10:22:29,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:29,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:29,992 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 10:22:29,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:29,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503996760] [2023-08-30 10:22:29,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503996760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:22:29,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:22:29,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:22:29,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397301128] [2023-08-30 10:22:29,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:22:30,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:22:30,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:30,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:22:30,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:22:30,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 423 [2023-08-30 10:22:30,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 81 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:30,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:30,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 423 [2023-08-30 10:22:30,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:30,183 INFO L130 PetriNetUnfolder]: 501/1044 cut-off events. [2023-08-30 10:22:30,183 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:22:30,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2034 conditions, 1044 events. 501/1044 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5673 event pairs, 456 based on Foata normal form. 112/838 useless extension candidates. Maximal degree in co-relation 1967. Up to 983 conditions per place. [2023-08-30 10:22:30,189 INFO L137 encePairwiseOnDemand]: 397/423 looper letters, 49 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 10:22:30,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 220 flow [2023-08-30 10:22:30,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:22:30,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:22:30,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 639 transitions. [2023-08-30 10:22:30,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2023-08-30 10:22:30,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 639 transitions. [2023-08-30 10:22:30,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 639 transitions. [2023-08-30 10:22:30,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:30,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 639 transitions. [2023-08-30 10:22:30,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:30,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:30,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:30,213 INFO L175 Difference]: Start difference. First operand has 60 places, 81 transitions, 170 flow. Second operand 3 states and 639 transitions. [2023-08-30 10:22:30,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 220 flow [2023-08-30 10:22:30,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:22:30,216 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 122 flow [2023-08-30 10:22:30,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, 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=122, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-08-30 10:22:30,220 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2023-08-30 10:22:30,220 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 122 flow [2023-08-30 10:22:30,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:30,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:30,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:22:30,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:22:30,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:22:30,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:30,222 INFO L85 PathProgramCache]: Analyzing trace with hash 841224676, now seen corresponding path program 1 times [2023-08-30 10:22:30,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:30,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577889639] [2023-08-30 10:22:30,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:30,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:30,272 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 10:22:30,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:30,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577889639] [2023-08-30 10:22:30,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577889639] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:22:30,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:22:30,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:22:30,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368130180] [2023-08-30 10:22:30,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:22:30,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:22:30,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:30,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:22:30,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:22:30,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 423 [2023-08-30 10:22:30,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:30,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:30,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 423 [2023-08-30 10:22:30,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:30,422 INFO L130 PetriNetUnfolder]: 501/1045 cut-off events. [2023-08-30 10:22:30,422 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:22:30,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2038 conditions, 1045 events. 501/1045 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5670 event pairs, 456 based on Foata normal form. 0/727 useless extension candidates. Maximal degree in co-relation 2031. Up to 984 conditions per place. [2023-08-30 10:22:30,426 INFO L137 encePairwiseOnDemand]: 420/423 looper letters, 49 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-30 10:22:30,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 226 flow [2023-08-30 10:22:30,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:22:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:22:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 616 transitions. [2023-08-30 10:22:30,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4854215918045705 [2023-08-30 10:22:30,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 616 transitions. [2023-08-30 10:22:30,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 616 transitions. [2023-08-30 10:22:30,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:30,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 616 transitions. [2023-08-30 10:22:30,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:30,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:30,433 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:30,433 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 122 flow. Second operand 3 states and 616 transitions. [2023-08-30 10:22:30,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 226 flow [2023-08-30 10:22:30,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 57 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:22:30,435 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 133 flow [2023-08-30 10:22:30,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-08-30 10:22:30,436 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2023-08-30 10:22:30,436 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 133 flow [2023-08-30 10:22:30,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:30,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:30,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 10:22:30,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:22:30,438 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:22:30,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:30,438 INFO L85 PathProgramCache]: Analyzing trace with hash 297397015, now seen corresponding path program 1 times [2023-08-30 10:22:30,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:30,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882911431] [2023-08-30 10:22:30,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:30,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:30,492 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 10:22:30,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:30,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882911431] [2023-08-30 10:22:30,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882911431] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:22:30,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735667936] [2023-08-30 10:22:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:30,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:30,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:22:30,496 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 10:22:30,522 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 10:22:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:30,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:22:30,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:22:30,603 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 10:22:30,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:22:30,616 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 10:22:30,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735667936] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:22:30,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:22:30,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 10:22:30,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792431983] [2023-08-30 10:22:30,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:22:30,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:22:30,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:30,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:22:30,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:22:30,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 423 [2023-08-30 10:22:30,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 133 flow. Second operand has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:30,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:30,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 423 [2023-08-30 10:22:30,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:30,793 INFO L130 PetriNetUnfolder]: 501/1048 cut-off events. [2023-08-30 10:22:30,793 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:22:30,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 1048 events. 501/1048 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5664 event pairs, 456 based on Foata normal form. 0/730 useless extension candidates. Maximal degree in co-relation 2044. Up to 984 conditions per place. [2023-08-30 10:22:30,797 INFO L137 encePairwiseOnDemand]: 420/423 looper letters, 49 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-08-30 10:22:30,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 253 flow [2023-08-30 10:22:30,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:22:30,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:22:30,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1179 transitions. [2023-08-30 10:22:30,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2023-08-30 10:22:30,800 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1179 transitions. [2023-08-30 10:22:30,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1179 transitions. [2023-08-30 10:22:30,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:30,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1179 transitions. [2023-08-30 10:22:30,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.5) internal successors, (1179), 6 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:30,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:30,807 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:30,807 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 133 flow. Second operand 6 states and 1179 transitions. [2023-08-30 10:22:30,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 253 flow [2023-08-30 10:22:30,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 249 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:22:30,809 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 165 flow [2023-08-30 10:22:30,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=165, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-08-30 10:22:30,809 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 7 predicate places. [2023-08-30 10:22:30,810 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 165 flow [2023-08-30 10:22:30,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:30,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:30,811 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 10:22:30,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 10:22:31,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:31,016 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:22:31,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:31,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1433028260, now seen corresponding path program 2 times [2023-08-30 10:22:31,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:31,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115591730] [2023-08-30 10:22:31,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:31,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:31,059 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 10:22:31,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:31,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115591730] [2023-08-30 10:22:31,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115591730] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:22:31,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:22:31,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:22:31,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581879590] [2023-08-30 10:22:31,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:22:31,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:22:31,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:31,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:22:31,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:22:31,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 423 [2023-08-30 10:22:31,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:31,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:31,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 423 [2023-08-30 10:22:31,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:31,173 INFO L130 PetriNetUnfolder]: 461/956 cut-off events. [2023-08-30 10:22:31,173 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:22:31,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1883 conditions, 956 events. 461/956 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5089 event pairs, 252 based on Foata normal form. 0/699 useless extension candidates. Maximal degree in co-relation 1870. Up to 868 conditions per place. [2023-08-30 10:22:31,177 INFO L137 encePairwiseOnDemand]: 418/423 looper letters, 70 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-08-30 10:22:31,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 345 flow [2023-08-30 10:22:31,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:22:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:22:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 635 transitions. [2023-08-30 10:22:31,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5003940110323088 [2023-08-30 10:22:31,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 635 transitions. [2023-08-30 10:22:31,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 635 transitions. [2023-08-30 10:22:31,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:31,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 635 transitions. [2023-08-30 10:22:31,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:31,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:31,183 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:31,183 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 165 flow. Second operand 3 states and 635 transitions. [2023-08-30 10:22:31,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 345 flow [2023-08-30 10:22:31,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 331 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:22:31,185 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 155 flow [2023-08-30 10:22:31,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2023-08-30 10:22:31,186 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 7 predicate places. [2023-08-30 10:22:31,186 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 155 flow [2023-08-30 10:22:31,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:31,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:31,187 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:31,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 10:22:31,187 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:22:31,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:31,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2013368503, now seen corresponding path program 1 times [2023-08-30 10:22:31,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:31,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923142153] [2023-08-30 10:22:31,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:31,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:31,280 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 10:22:31,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:31,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923142153] [2023-08-30 10:22:31,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923142153] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:22:31,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505734122] [2023-08-30 10:22:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:31,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:31,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:22:31,283 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 10:22:31,298 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 10:22:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:31,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:22:31,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:22:31,374 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 10:22:31,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:22:31,410 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 10:22:31,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505734122] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:22:31,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:22:31,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-30 10:22:31,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169527767] [2023-08-30 10:22:31,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:22:31,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 10:22:31,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:31,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 10:22:31,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 10:22:31,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 423 [2023-08-30 10:22:31,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 155 flow. Second operand has 12 states, 12 states have (on average 188.5) internal successors, (2262), 12 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:31,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:31,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 423 [2023-08-30 10:22:31,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:31,561 INFO L130 PetriNetUnfolder]: 461/952 cut-off events. [2023-08-30 10:22:31,561 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2023-08-30 10:22:31,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 952 events. 461/952 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4922 event pairs, 418 based on Foata normal form. 6/715 useless extension candidates. Maximal degree in co-relation 1932. Up to 886 conditions per place. [2023-08-30 10:22:31,565 INFO L137 encePairwiseOnDemand]: 420/423 looper letters, 47 selfloop transitions, 11 changer transitions 0/64 dead transitions. [2023-08-30 10:22:31,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 307 flow [2023-08-30 10:22:31,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:22:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:22:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2308 transitions. [2023-08-30 10:22:31,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45468873128447596 [2023-08-30 10:22:31,569 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2308 transitions. [2023-08-30 10:22:31,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2308 transitions. [2023-08-30 10:22:31,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:31,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2308 transitions. [2023-08-30 10:22:31,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 192.33333333333334) internal successors, (2308), 12 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:31,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 423.0) internal successors, (5499), 13 states have internal predecessors, (5499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:31,579 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 423.0) internal successors, (5499), 13 states have internal predecessors, (5499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:31,580 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 155 flow. Second operand 12 states and 2308 transitions. [2023-08-30 10:22:31,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 307 flow [2023-08-30 10:22:31,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 64 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:22:31,582 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 235 flow [2023-08-30 10:22:31,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=235, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2023-08-30 10:22:31,583 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 22 predicate places. [2023-08-30 10:22:31,583 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 235 flow [2023-08-30 10:22:31,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 188.5) internal successors, (2262), 12 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:31,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:31,584 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:31,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 10:22:31,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:31,789 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:22:31,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:31,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1518625833, now seen corresponding path program 2 times [2023-08-30 10:22:31,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:31,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579492349] [2023-08-30 10:22:31,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:31,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:22:31,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:31,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579492349] [2023-08-30 10:22:31,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579492349] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:22:31,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:22:31,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:22:31,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481251941] [2023-08-30 10:22:31,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:22:31,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:22:31,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:31,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:22:31,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:22:32,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 423 [2023-08-30 10:22:32,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 64 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:32,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:32,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 423 [2023-08-30 10:22:32,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:32,215 INFO L130 PetriNetUnfolder]: 455/1005 cut-off events. [2023-08-30 10:22:32,216 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-30 10:22:32,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2069 conditions, 1005 events. 455/1005 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5517 event pairs, 198 based on Foata normal form. 0/789 useless extension candidates. Maximal degree in co-relation 2048. Up to 639 conditions per place. [2023-08-30 10:22:32,219 INFO L137 encePairwiseOnDemand]: 412/423 looper letters, 95 selfloop transitions, 8 changer transitions 6/115 dead transitions. [2023-08-30 10:22:32,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 115 transitions, 564 flow [2023-08-30 10:22:32,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:22:32,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:22:32,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1000 transitions. [2023-08-30 10:22:32,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728132387706856 [2023-08-30 10:22:32,222 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1000 transitions. [2023-08-30 10:22:32,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1000 transitions. [2023-08-30 10:22:32,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:32,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1000 transitions. [2023-08-30 10:22:32,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 200.0) internal successors, (1000), 5 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:32,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 423.0) internal successors, (2538), 6 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:32,227 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 423.0) internal successors, (2538), 6 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:32,227 INFO L175 Difference]: Start difference. First operand has 82 places, 64 transitions, 235 flow. Second operand 5 states and 1000 transitions. [2023-08-30 10:22:32,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 115 transitions, 564 flow [2023-08-30 10:22:32,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 115 transitions, 516 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 10:22:32,230 INFO L231 Difference]: Finished difference. Result has 85 places, 70 transitions, 253 flow [2023-08-30 10:22:32,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=85, PETRI_TRANSITIONS=70} [2023-08-30 10:22:32,230 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 25 predicate places. [2023-08-30 10:22:32,230 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 70 transitions, 253 flow [2023-08-30 10:22:32,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:32,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:32,231 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:32,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:22:32,231 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:22:32,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:32,232 INFO L85 PathProgramCache]: Analyzing trace with hash 88738370, now seen corresponding path program 1 times [2023-08-30 10:22:32,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:32,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681851971] [2023-08-30 10:22:32,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:32,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:32,469 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:22:32,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:32,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681851971] [2023-08-30 10:22:32,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681851971] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:22:32,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:22:32,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:22:32,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386685893] [2023-08-30 10:22:32,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:22:32,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:22:32,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:32,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:22:32,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:22:32,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 423 [2023-08-30 10:22:32,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 70 transitions, 253 flow. Second operand has 8 states, 8 states have (on average 176.625) internal successors, (1413), 8 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:32,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:32,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 423 [2023-08-30 10:22:32,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:32,924 INFO L130 PetriNetUnfolder]: 512/1150 cut-off events. [2023-08-30 10:22:32,924 INFO L131 PetriNetUnfolder]: For 260/260 co-relation queries the response was YES. [2023-08-30 10:22:32,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2593 conditions, 1150 events. 512/1150 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6618 event pairs, 136 based on Foata normal form. 0/974 useless extension candidates. Maximal degree in co-relation 2568. Up to 505 conditions per place. [2023-08-30 10:22:32,928 INFO L137 encePairwiseOnDemand]: 409/423 looper letters, 152 selfloop transitions, 24 changer transitions 7/189 dead transitions. [2023-08-30 10:22:32,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 189 transitions, 913 flow [2023-08-30 10:22:32,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:22:32,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:22:32,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1924 transitions. [2023-08-30 10:22:32,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548463356973995 [2023-08-30 10:22:32,933 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1924 transitions. [2023-08-30 10:22:32,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1924 transitions. [2023-08-30 10:22:32,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:32,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1924 transitions. [2023-08-30 10:22:32,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 192.4) internal successors, (1924), 10 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:32,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 423.0) internal successors, (4653), 11 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:32,941 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 423.0) internal successors, (4653), 11 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:32,941 INFO L175 Difference]: Start difference. First operand has 85 places, 70 transitions, 253 flow. Second operand 10 states and 1924 transitions. [2023-08-30 10:22:32,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 189 transitions, 913 flow [2023-08-30 10:22:32,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 189 transitions, 913 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:22:32,945 INFO L231 Difference]: Finished difference. Result has 98 places, 85 transitions, 402 flow [2023-08-30 10:22:32,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=402, PETRI_PLACES=98, PETRI_TRANSITIONS=85} [2023-08-30 10:22:32,946 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 38 predicate places. [2023-08-30 10:22:32,946 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 85 transitions, 402 flow [2023-08-30 10:22:32,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 176.625) internal successors, (1413), 8 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:32,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:32,947 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:32,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 10:22:32,947 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:22:32,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:32,947 INFO L85 PathProgramCache]: Analyzing trace with hash 88738433, now seen corresponding path program 1 times [2023-08-30 10:22:32,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:32,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960654566] [2023-08-30 10:22:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:32,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:33,038 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:22:33,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:33,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960654566] [2023-08-30 10:22:33,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960654566] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:22:33,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:22:33,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:22:33,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899835061] [2023-08-30 10:22:33,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:22:33,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:22:33,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:33,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:22:33,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:22:33,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 423 [2023-08-30 10:22:33,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 85 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:33,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:33,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 423 [2023-08-30 10:22:33,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:33,271 INFO L130 PetriNetUnfolder]: 511/1198 cut-off events. [2023-08-30 10:22:33,271 INFO L131 PetriNetUnfolder]: For 904/904 co-relation queries the response was YES. [2023-08-30 10:22:33,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3117 conditions, 1198 events. 511/1198 cut-off events. For 904/904 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 7103 event pairs, 183 based on Foata normal form. 34/1120 useless extension candidates. Maximal degree in co-relation 3086. Up to 549 conditions per place. [2023-08-30 10:22:33,276 INFO L137 encePairwiseOnDemand]: 412/423 looper letters, 109 selfloop transitions, 23 changer transitions 8/146 dead transitions. [2023-08-30 10:22:33,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 146 transitions, 887 flow [2023-08-30 10:22:33,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:22:33,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:22:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 997 transitions. [2023-08-30 10:22:33,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47139479905437354 [2023-08-30 10:22:33,278 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 997 transitions. [2023-08-30 10:22:33,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 997 transitions. [2023-08-30 10:22:33,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:33,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 997 transitions. [2023-08-30 10:22:33,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.4) internal successors, (997), 5 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:33,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 423.0) internal successors, (2538), 6 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:33,283 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 423.0) internal successors, (2538), 6 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:33,284 INFO L175 Difference]: Start difference. First operand has 98 places, 85 transitions, 402 flow. Second operand 5 states and 997 transitions. [2023-08-30 10:22:33,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 146 transitions, 887 flow [2023-08-30 10:22:33,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 146 transitions, 846 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-30 10:22:33,299 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 491 flow [2023-08-30 10:22:33,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=491, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2023-08-30 10:22:33,302 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 41 predicate places. [2023-08-30 10:22:33,302 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 491 flow [2023-08-30 10:22:33,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:33,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:33,302 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:33,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 10:22:33,303 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:22:33,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:33,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2137894980, now seen corresponding path program 1 times [2023-08-30 10:22:33,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:33,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057135909] [2023-08-30 10:22:33,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:33,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:33,346 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:22:33,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:33,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057135909] [2023-08-30 10:22:33,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057135909] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:22:33,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627435446] [2023-08-30 10:22:33,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:33,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:33,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:22:33,348 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 10:22:33,377 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 10:22:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:33,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:22:33,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:22:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:22:33,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:22:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:22:33,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627435446] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:22:33,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:22:33,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 10:22:33,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404618959] [2023-08-30 10:22:33,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:22:33,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:22:33,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:33,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:22:33,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:22:33,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 423 [2023-08-30 10:22:33,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 491 flow. Second operand has 7 states, 7 states have (on average 190.14285714285714) internal successors, (1331), 7 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:33,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:33,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 423 [2023-08-30 10:22:33,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:33,505 INFO L130 PetriNetUnfolder]: 24/96 cut-off events. [2023-08-30 10:22:33,505 INFO L131 PetriNetUnfolder]: For 187/187 co-relation queries the response was YES. [2023-08-30 10:22:33,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 96 events. 24/96 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 216 event pairs, 2 based on Foata normal form. 17/111 useless extension candidates. Maximal degree in co-relation 321. Up to 55 conditions per place. [2023-08-30 10:22:33,506 INFO L137 encePairwiseOnDemand]: 420/423 looper letters, 33 selfloop transitions, 2 changer transitions 19/56 dead transitions. [2023-08-30 10:22:33,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 56 transitions, 397 flow [2023-08-30 10:22:33,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:22:33,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:22:33,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 788 transitions. [2023-08-30 10:22:33,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657210401891253 [2023-08-30 10:22:33,508 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 788 transitions. [2023-08-30 10:22:33,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 788 transitions. [2023-08-30 10:22:33,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:33,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 788 transitions. [2023-08-30 10:22:33,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:33,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 423.0) internal successors, (2115), 5 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:33,511 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 423.0) internal successors, (2115), 5 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:33,512 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 491 flow. Second operand 4 states and 788 transitions. [2023-08-30 10:22:33,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 56 transitions, 397 flow [2023-08-30 10:22:33,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 331 flow, removed 6 selfloop flow, removed 15 redundant places. [2023-08-30 10:22:33,513 INFO L231 Difference]: Finished difference. Result has 60 places, 30 transitions, 150 flow [2023-08-30 10:22:33,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=60, PETRI_TRANSITIONS=30} [2023-08-30 10:22:33,514 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2023-08-30 10:22:33,514 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 30 transitions, 150 flow [2023-08-30 10:22:33,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 190.14285714285714) internal successors, (1331), 7 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:33,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:33,515 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:33,522 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 10:22:33,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:33,720 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:22:33,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:33,721 INFO L85 PathProgramCache]: Analyzing trace with hash 139202206, now seen corresponding path program 1 times [2023-08-30 10:22:33,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:33,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302081391] [2023-08-30 10:22:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:33,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:22:33,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:33,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302081391] [2023-08-30 10:22:33,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302081391] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:22:33,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503856115] [2023-08-30 10:22:33,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:33,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:33,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:22:33,995 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 10:22:33,996 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 10:22:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:34,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:22:34,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:22:34,100 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 7 treesize of output 6 [2023-08-30 10:22:34,164 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:22:34,164 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 11 treesize of output 11 [2023-08-30 10:22:34,183 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 13 treesize of output 15 [2023-08-30 10:22:34,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2023-08-30 10:22:34,284 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 20 treesize of output 22 [2023-08-30 10:22:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:22:34,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:22:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:22:38,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503856115] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:22:38,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:22:38,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 16 [2023-08-30 10:22:38,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195135012] [2023-08-30 10:22:38,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:22:38,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 10:22:38,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:38,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 10:22:38,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=230, Unknown=6, NotChecked=0, Total=306 [2023-08-30 10:22:39,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 423 [2023-08-30 10:22:39,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 30 transitions, 150 flow. Second operand has 18 states, 18 states have (on average 150.38888888888889) internal successors, (2707), 18 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:39,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:39,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 423 [2023-08-30 10:22:39,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:39,350 INFO L130 PetriNetUnfolder]: 10/48 cut-off events. [2023-08-30 10:22:39,350 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2023-08-30 10:22:39,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 48 events. 10/48 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 3 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 150. Up to 13 conditions per place. [2023-08-30 10:22:39,350 INFO L137 encePairwiseOnDemand]: 416/423 looper letters, 23 selfloop transitions, 8 changer transitions 0/33 dead transitions. [2023-08-30 10:22:39,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 33 transitions, 219 flow [2023-08-30 10:22:39,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:22:39,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:22:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1354 transitions. [2023-08-30 10:22:39,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35566062516417124 [2023-08-30 10:22:39,353 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1354 transitions. [2023-08-30 10:22:39,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1354 transitions. [2023-08-30 10:22:39,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:39,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1354 transitions. [2023-08-30 10:22:39,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 150.44444444444446) internal successors, (1354), 9 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:39,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 423.0) internal successors, (4230), 10 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:39,359 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 423.0) internal successors, (4230), 10 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:39,359 INFO L175 Difference]: Start difference. First operand has 60 places, 30 transitions, 150 flow. Second operand 9 states and 1354 transitions. [2023-08-30 10:22:39,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 33 transitions, 219 flow [2023-08-30 10:22:39,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 33 transitions, 202 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-30 10:22:39,361 INFO L231 Difference]: Finished difference. Result has 55 places, 29 transitions, 145 flow [2023-08-30 10:22:39,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=145, PETRI_PLACES=55, PETRI_TRANSITIONS=29} [2023-08-30 10:22:39,361 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -5 predicate places. [2023-08-30 10:22:39,361 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 29 transitions, 145 flow [2023-08-30 10:22:39,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 150.38888888888889) internal successors, (2707), 18 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:39,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:39,363 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:39,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 10:22:39,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:39,567 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:22:39,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:39,568 INFO L85 PathProgramCache]: Analyzing trace with hash -969727899, now seen corresponding path program 1 times [2023-08-30 10:22:39,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:39,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466139286] [2023-08-30 10:22:39,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:39,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:22:39,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:39,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466139286] [2023-08-30 10:22:39,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466139286] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:22:39,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210196388] [2023-08-30 10:22:39,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:39,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:39,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:22:39,778 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 10:22:39,780 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 10:22:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:39,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 10:22:39,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:22:39,913 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:22:39,914 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 11 treesize of output 11 [2023-08-30 10:22:39,954 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 15 treesize of output 11 [2023-08-30 10:22:39,983 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 18 treesize of output 20 [2023-08-30 10:22:39,994 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:22:39,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:22:39,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210196388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:22:39,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:22:39,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-30 10:22:39,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844657863] [2023-08-30 10:22:39,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:22:39,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:22:39,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:39,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:22:39,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:22:40,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 423 [2023-08-30 10:22:40,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 29 transitions, 145 flow. Second operand has 7 states, 7 states have (on average 175.14285714285714) internal successors, (1226), 7 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:40,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:40,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 423 [2023-08-30 10:22:40,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:40,222 INFO L130 PetriNetUnfolder]: 10/47 cut-off events. [2023-08-30 10:22:40,222 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2023-08-30 10:22:40,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 47 events. 10/47 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 4 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 150. Up to 12 conditions per place. [2023-08-30 10:22:40,223 INFO L137 encePairwiseOnDemand]: 417/423 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-08-30 10:22:40,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 30 transitions, 202 flow [2023-08-30 10:22:40,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:22:40,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:22:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1055 transitions. [2023-08-30 10:22:40,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4156816390858944 [2023-08-30 10:22:40,226 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1055 transitions. [2023-08-30 10:22:40,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1055 transitions. [2023-08-30 10:22:40,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:40,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1055 transitions. [2023-08-30 10:22:40,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.83333333333334) internal successors, (1055), 6 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:40,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:40,231 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:40,231 INFO L175 Difference]: Start difference. First operand has 55 places, 29 transitions, 145 flow. Second operand 6 states and 1055 transitions. [2023-08-30 10:22:40,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 30 transitions, 202 flow [2023-08-30 10:22:40,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 30 transitions, 185 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-30 10:22:40,232 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2023-08-30 10:22:40,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2023-08-30 10:22:40,233 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -9 predicate places. [2023-08-30 10:22:40,233 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2023-08-30 10:22:40,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 175.14285714285714) internal successors, (1226), 7 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:40,235 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 22 remaining) [2023-08-30 10:22:40,235 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-08-30 10:22:40,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-08-30 10:22:40,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-08-30 10:22:40,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-30 10:22:40,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-30 10:22:40,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-30 10:22:40,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-30 10:22:40,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-30 10:22:40,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-30 10:22:40,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-30 10:22:40,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-30 10:22:40,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2023-08-30 10:22:40,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2023-08-30 10:22:40,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-30 10:22:40,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-30 10:22:40,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-30 10:22:40,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-30 10:22:40,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-30 10:22:40,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-30 10:22:40,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-30 10:22:40,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-30 10:22:40,257 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 10:22:40,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 10:22:40,457 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:40,459 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:22:40,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 223 transitions, 454 flow [2023-08-30 10:22:40,476 INFO L130 PetriNetUnfolder]: 45/300 cut-off events. [2023-08-30 10:22:40,476 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 10:22:40,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 300 events. 45/300 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 961 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2023-08-30 10:22:40,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 223 transitions, 454 flow [2023-08-30 10:22:40,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 212 transitions, 429 flow [2023-08-30 10:22:40,478 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:22:40,478 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 212 transitions, 429 flow [2023-08-30 10:22:40,479 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 212 transitions, 429 flow [2023-08-30 10:22:40,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 212 transitions, 429 flow [2023-08-30 10:22:40,491 INFO L130 PetriNetUnfolder]: 44/289 cut-off events. [2023-08-30 10:22:40,491 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:22:40,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 289 events. 44/289 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 919 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2023-08-30 10:22:40,496 INFO L119 LiptonReduction]: Number of co-enabled transitions 14268 [2023-08-30 10:22:43,189 INFO L134 LiptonReduction]: Checked pairs total: 23874 [2023-08-30 10:22:43,189 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-08-30 10:22:43,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:22:43,191 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;@710f78fb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:22:43,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:22:43,196 INFO L130 PetriNetUnfolder]: 11/46 cut-off events. [2023-08-30 10:22:43,197 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:22:43,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:43,197 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-30 10:22:43,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:22:43,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:43,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1034982227, now seen corresponding path program 1 times [2023-08-30 10:22:43,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:43,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642731464] [2023-08-30 10:22:43,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:43,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:43,215 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 10:22:43,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:43,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642731464] [2023-08-30 10:22:43,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642731464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:22:43,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:22:43,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:22:43,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379551944] [2023-08-30 10:22:43,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:22:43,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:22:43,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:43,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:22:43,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:22:43,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 414 [2023-08-30 10:22:43,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 77 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:43,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:43,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 414 [2023-08-30 10:22:43,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:43,322 INFO L130 PetriNetUnfolder]: 501/1042 cut-off events. [2023-08-30 10:22:43,322 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:22:43,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2029 conditions, 1042 events. 501/1042 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5656 event pairs, 456 based on Foata normal form. 112/837 useless extension candidates. Maximal degree in co-relation 1967. Up to 981 conditions per place. [2023-08-30 10:22:43,324 INFO L137 encePairwiseOnDemand]: 387/414 looper letters, 27 selfloop transitions, 2 changer transitions 22/54 dead transitions. [2023-08-30 10:22:43,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 209 flow [2023-08-30 10:22:43,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:22:43,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:22:43,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 637 transitions. [2023-08-30 10:22:43,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128824476650563 [2023-08-30 10:22:43,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 637 transitions. [2023-08-30 10:22:43,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 637 transitions. [2023-08-30 10:22:43,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:43,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 637 transitions. [2023-08-30 10:22:43,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:43,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:43,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:43,341 INFO L175 Difference]: Start difference. First operand has 55 places, 77 transitions, 159 flow. Second operand 3 states and 637 transitions. [2023-08-30 10:22:43,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 209 flow [2023-08-30 10:22:43,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:22:43,342 INFO L231 Difference]: Finished difference. Result has 56 places, 32 transitions, 79 flow [2023-08-30 10:22:43,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=56, PETRI_TRANSITIONS=32} [2023-08-30 10:22:43,343 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 1 predicate places. [2023-08-30 10:22:43,343 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 32 transitions, 79 flow [2023-08-30 10:22:43,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:43,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:43,343 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:43,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 10:22:43,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:22:43,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:43,344 INFO L85 PathProgramCache]: Analyzing trace with hash -362663475, now seen corresponding path program 1 times [2023-08-30 10:22:43,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:43,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767404213] [2023-08-30 10:22:43,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:43,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:43,393 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 10:22:43,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:43,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767404213] [2023-08-30 10:22:43,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767404213] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:22:43,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234762185] [2023-08-30 10:22:43,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:43,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:43,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:22:43,397 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 10:22:43,400 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 10:22:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:43,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:22:43,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:22:43,476 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 10:22:43,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:22:43,484 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 10:22:43,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234762185] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:22:43,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:22:43,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:22:43,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807410459] [2023-08-30 10:22:43,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:22:43,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:22:43,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:43,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:22:43,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:22:43,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 414 [2023-08-30 10:22:43,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 32 transitions, 79 flow. Second operand has 7 states, 7 states have (on average 188.57142857142858) internal successors, (1320), 7 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:43,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:43,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 414 [2023-08-30 10:22:43,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:43,544 INFO L130 PetriNetUnfolder]: 102/237 cut-off events. [2023-08-30 10:22:43,544 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:22:43,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 237 events. 102/237 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 844 event pairs, 95 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 465. Up to 221 conditions per place. [2023-08-30 10:22:43,545 INFO L137 encePairwiseOnDemand]: 411/414 looper letters, 27 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2023-08-30 10:22:43,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 155 flow [2023-08-30 10:22:43,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:22:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:22:43,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1157 transitions. [2023-08-30 10:22:43,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46578099838969406 [2023-08-30 10:22:43,547 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1157 transitions. [2023-08-30 10:22:43,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1157 transitions. [2023-08-30 10:22:43,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:43,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1157 transitions. [2023-08-30 10:22:43,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 192.83333333333334) internal successors, (1157), 6 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:43,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:43,552 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:43,552 INFO L175 Difference]: Start difference. First operand has 56 places, 32 transitions, 79 flow. Second operand 6 states and 1157 transitions. [2023-08-30 10:22:43,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 155 flow [2023-08-30 10:22:43,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 151 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:22:43,553 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 111 flow [2023-08-30 10:22:43,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-30 10:22:43,555 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -13 predicate places. [2023-08-30 10:22:43,555 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 111 flow [2023-08-30 10:22:43,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 188.57142857142858) internal successors, (1320), 7 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:43,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:43,556 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-30 10:22:43,571 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 10:22:43,760 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 10:22:43,761 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:22:43,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:43,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1402904109, now seen corresponding path program 2 times [2023-08-30 10:22:43,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:43,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748222789] [2023-08-30 10:22:43,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:43,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:22:43,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:43,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748222789] [2023-08-30 10:22:43,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748222789] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:22:43,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890846527] [2023-08-30 10:22:43,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:22:43,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:43,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:22:43,839 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 10:22:43,840 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 10:22:43,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:22:43,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:22:43,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:22:43,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:22:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:22:43,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:22:43,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:22:43,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890846527] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:22:43,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:22:43,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:22:43,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373330525] [2023-08-30 10:22:43,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:22:43,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:22:43,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:43,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:22:43,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:22:43,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 414 [2023-08-30 10:22:43,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 111 flow. Second operand has 13 states, 13 states have (on average 188.30769230769232) internal successors, (2448), 13 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:43,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:43,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 414 [2023-08-30 10:22:43,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:44,039 INFO L130 PetriNetUnfolder]: 102/243 cut-off events. [2023-08-30 10:22:44,040 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 10:22:44,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 243 events. 102/243 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 844 event pairs, 95 based on Foata normal form. 6/158 useless extension candidates. Maximal degree in co-relation 456. Up to 221 conditions per place. [2023-08-30 10:22:44,041 INFO L137 encePairwiseOnDemand]: 411/414 looper letters, 27 selfloop transitions, 11 changer transitions 0/41 dead transitions. [2023-08-30 10:22:44,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 41 transitions, 223 flow [2023-08-30 10:22:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:22:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:22:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2288 transitions. [2023-08-30 10:22:44,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605475040257649 [2023-08-30 10:22:44,045 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2288 transitions. [2023-08-30 10:22:44,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2288 transitions. [2023-08-30 10:22:44,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:44,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2288 transitions. [2023-08-30 10:22:44,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 190.66666666666666) internal successors, (2288), 12 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:44,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 414.0) internal successors, (5382), 13 states have internal predecessors, (5382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:44,053 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 414.0) internal successors, (5382), 13 states have internal predecessors, (5382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:44,054 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 111 flow. Second operand 12 states and 2288 transitions. [2023-08-30 10:22:44,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 41 transitions, 223 flow [2023-08-30 10:22:44,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 41 transitions, 209 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:22:44,055 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 181 flow [2023-08-30 10:22:44,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-08-30 10:22:44,056 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-08-30 10:22:44,056 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 181 flow [2023-08-30 10:22:44,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 188.30769230769232) internal successors, (2448), 13 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:44,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:44,056 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-30 10:22:44,067 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 10:22:44,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:44,261 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:22:44,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:44,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1156087917, now seen corresponding path program 3 times [2023-08-30 10:22:44,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:44,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069328419] [2023-08-30 10:22:44,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:44,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:22:44,279 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:22:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:22:44,318 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:22:44,319 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:22:44,319 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:22:44,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 10:22:44,319 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-30 10:22:44,320 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:22:44,320 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:22:44,320 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:22:44,359 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 10:22:44,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 307 transitions, 632 flow [2023-08-30 10:22:44,395 INFO L130 PetriNetUnfolder]: 75/497 cut-off events. [2023-08-30 10:22:44,395 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2023-08-30 10:22:44,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 497 events. 75/497 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2021 event pairs, 0 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 302. Up to 12 conditions per place. [2023-08-30 10:22:44,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 307 transitions, 632 flow [2023-08-30 10:22:44,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 307 transitions, 632 flow [2023-08-30 10:22:44,402 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:22:44,402 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 307 transitions, 632 flow [2023-08-30 10:22:44,402 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 307 transitions, 632 flow [2023-08-30 10:22:44,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 307 transitions, 632 flow [2023-08-30 10:22:44,433 INFO L130 PetriNetUnfolder]: 75/497 cut-off events. [2023-08-30 10:22:44,433 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2023-08-30 10:22:44,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 497 events. 75/497 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2021 event pairs, 0 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 302. Up to 12 conditions per place. [2023-08-30 10:22:44,451 INFO L119 LiptonReduction]: Number of co-enabled transitions 45100 [2023-08-30 10:22:47,224 INFO L134 LiptonReduction]: Checked pairs total: 79211 [2023-08-30 10:22:47,224 INFO L136 LiptonReduction]: Total number of compositions: 269 [2023-08-30 10:22:47,225 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:22:47,225 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;@710f78fb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:22:47,225 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-30 10:22:47,226 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 10:22:47,226 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:22:47,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:47,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:22:47,226 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:22:47,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:47,238 INFO L85 PathProgramCache]: Analyzing trace with hash 55182, now seen corresponding path program 1 times [2023-08-30 10:22:47,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:47,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876658223] [2023-08-30 10:22:47,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:47,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:47,250 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 10:22:47,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:47,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876658223] [2023-08-30 10:22:47,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876658223] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:22:47,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:22:47,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:22:47,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106305624] [2023-08-30 10:22:47,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:22:47,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:22:47,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:47,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:22:47,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:22:47,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 576 [2023-08-30 10:22:47,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 119 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:47,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:47,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 576 [2023-08-30 10:22:47,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:48,927 INFO L130 PetriNetUnfolder]: 19249/29724 cut-off events. [2023-08-30 10:22:48,928 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2023-08-30 10:22:48,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58306 conditions, 29724 events. 19249/29724 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 211237 event pairs, 18264 based on Foata normal form. 3746/24642 useless extension candidates. Maximal degree in co-relation 34888. Up to 28466 conditions per place. [2023-08-30 10:22:49,049 INFO L137 encePairwiseOnDemand]: 536/576 looper letters, 71 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-30 10:22:49,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 332 flow [2023-08-30 10:22:49,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:22:49,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:22:49,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 883 transitions. [2023-08-30 10:22:49,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5109953703703703 [2023-08-30 10:22:49,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 883 transitions. [2023-08-30 10:22:49,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 883 transitions. [2023-08-30 10:22:49,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:49,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 883 transitions. [2023-08-30 10:22:49,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:49,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 576.0) internal successors, (2304), 4 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:49,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 576.0) internal successors, (2304), 4 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:49,056 INFO L175 Difference]: Start difference. First operand has 87 places, 119 transitions, 256 flow. Second operand 3 states and 883 transitions. [2023-08-30 10:22:49,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 332 flow [2023-08-30 10:22:49,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 332 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:22:49,058 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 198 flow [2023-08-30 10:22:49,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2023-08-30 10:22:49,059 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -2 predicate places. [2023-08-30 10:22:49,059 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 198 flow [2023-08-30 10:22:49,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:49,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:49,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:22:49,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 10:22:49,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:22:49,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:49,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1713527, now seen corresponding path program 1 times [2023-08-30 10:22:49,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:49,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163811489] [2023-08-30 10:22:49,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:49,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:49,079 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 10:22:49,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:49,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163811489] [2023-08-30 10:22:49,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163811489] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:22:49,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451646303] [2023-08-30 10:22:49,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:49,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:49,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:22:49,081 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 10:22:49,083 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 10:22:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:49,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:22:49,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:22:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:22:49,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:22:49,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451646303] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:22:49,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:22:49,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 10:22:49,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849440243] [2023-08-30 10:22:49,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:22:49,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:22:49,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:49,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:22:49,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:22:49,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 576 [2023-08-30 10:22:49,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 257.75) internal successors, (1031), 4 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:49,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:49,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 576 [2023-08-30 10:22:49,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:50,675 INFO L130 PetriNetUnfolder]: 19249/29723 cut-off events. [2023-08-30 10:22:50,675 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2023-08-30 10:22:50,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58311 conditions, 29723 events. 19249/29723 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 211104 event pairs, 18264 based on Foata normal form. 0/20896 useless extension candidates. Maximal degree in co-relation 58298. Up to 28464 conditions per place. [2023-08-30 10:22:50,799 INFO L137 encePairwiseOnDemand]: 573/576 looper letters, 70 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-30 10:22:50,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 338 flow [2023-08-30 10:22:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:22:50,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:22:50,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1101 transitions. [2023-08-30 10:22:50,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4778645833333333 [2023-08-30 10:22:50,802 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1101 transitions. [2023-08-30 10:22:50,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1101 transitions. [2023-08-30 10:22:50,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:50,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1101 transitions. [2023-08-30 10:22:50,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 275.25) internal successors, (1101), 4 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:50,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 576.0) internal successors, (2880), 5 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:50,807 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 576.0) internal successors, (2880), 5 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:50,807 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 198 flow. Second operand 4 states and 1101 transitions. [2023-08-30 10:22:50,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 338 flow [2023-08-30 10:22:50,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 334 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:22:50,809 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 194 flow [2023-08-30 10:22:50,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2023-08-30 10:22:50,809 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -1 predicate places. [2023-08-30 10:22:50,809 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 194 flow [2023-08-30 10:22:50,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 257.75) internal successors, (1031), 4 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:50,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:50,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:50,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 10:22:51,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 10:22:51,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:22:51,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:51,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2020306878, now seen corresponding path program 1 times [2023-08-30 10:22:51,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:51,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766199404] [2023-08-30 10:22:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:51,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:51,040 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 10:22:51,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:51,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766199404] [2023-08-30 10:22:51,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766199404] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:22:51,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869331713] [2023-08-30 10:22:51,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:51,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:51,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:22:51,062 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:22:51,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 10:22:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:51,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:22:51,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:22:51,133 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 10:22:51,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:22:51,143 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 10:22:51,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869331713] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:22:51,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:22:51,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:22:51,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005969255] [2023-08-30 10:22:51,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:22:51,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:22:51,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:51,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:22:51,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:22:51,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 576 [2023-08-30 10:22:51,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 257.57142857142856) internal successors, (1803), 7 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:51,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:51,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 576 [2023-08-30 10:22:51,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:52,722 INFO L130 PetriNetUnfolder]: 19249/29726 cut-off events. [2023-08-30 10:22:52,723 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2023-08-30 10:22:52,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58320 conditions, 29726 events. 19249/29726 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 211214 event pairs, 18264 based on Foata normal form. 0/20899 useless extension candidates. Maximal degree in co-relation 58307. Up to 28465 conditions per place. [2023-08-30 10:22:52,875 INFO L137 encePairwiseOnDemand]: 573/576 looper letters, 70 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2023-08-30 10:22:52,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 356 flow [2023-08-30 10:22:52,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:22:52,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:22:52,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1614 transitions. [2023-08-30 10:22:52,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4670138888888889 [2023-08-30 10:22:52,879 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1614 transitions. [2023-08-30 10:22:52,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1614 transitions. [2023-08-30 10:22:52,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:52,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1614 transitions. [2023-08-30 10:22:52,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:52,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 576.0) internal successors, (4032), 7 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:52,885 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 576.0) internal successors, (4032), 7 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:52,885 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 194 flow. Second operand 6 states and 1614 transitions. [2023-08-30 10:22:52,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 356 flow [2023-08-30 10:22:52,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 353 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:22:52,887 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 227 flow [2023-08-30 10:22:52,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2023-08-30 10:22:52,887 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2023-08-30 10:22:52,888 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 227 flow [2023-08-30 10:22:52,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 257.57142857142856) internal successors, (1803), 7 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:52,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:52,889 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:52,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 10:22:53,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 10:22:53,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:22:53,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:53,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1772277909, now seen corresponding path program 2 times [2023-08-30 10:22:53,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:53,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369061974] [2023-08-30 10:22:53,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:53,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:53,121 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 10:22:53,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:53,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369061974] [2023-08-30 10:22:53,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369061974] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:22:53,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:22:53,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:22:53,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574891726] [2023-08-30 10:22:53,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:22:53,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:22:53,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:53,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:22:53,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:22:53,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 576 [2023-08-30 10:22:53,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:53,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:53,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 576 [2023-08-30 10:22:53,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:54,584 INFO L130 PetriNetUnfolder]: 19029/29560 cut-off events. [2023-08-30 10:22:54,584 INFO L131 PetriNetUnfolder]: For 107/107 co-relation queries the response was YES. [2023-08-30 10:22:54,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58102 conditions, 29560 events. 19029/29560 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 213724 event pairs, 8778 based on Foata normal form. 0/20833 useless extension candidates. Maximal degree in co-relation 58085. Up to 28356 conditions per place. [2023-08-30 10:22:54,745 INFO L137 encePairwiseOnDemand]: 571/576 looper letters, 93 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-30 10:22:54,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 106 transitions, 457 flow [2023-08-30 10:22:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:22:54,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:22:54,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 865 transitions. [2023-08-30 10:22:54,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005787037037037 [2023-08-30 10:22:54,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 865 transitions. [2023-08-30 10:22:54,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 865 transitions. [2023-08-30 10:22:54,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:54,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 865 transitions. [2023-08-30 10:22:54,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:54,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 576.0) internal successors, (2304), 4 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:54,751 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 576.0) internal successors, (2304), 4 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:54,751 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 227 flow. Second operand 3 states and 865 transitions. [2023-08-30 10:22:54,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 106 transitions, 457 flow [2023-08-30 10:22:54,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 106 transitions, 443 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:22:54,753 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 229 flow [2023-08-30 10:22:54,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2023-08-30 10:22:54,754 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2023-08-30 10:22:54,754 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 229 flow [2023-08-30 10:22:54,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:54,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:54,754 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:54,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 10:22:54,755 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:22:54,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:54,755 INFO L85 PathProgramCache]: Analyzing trace with hash 347213659, now seen corresponding path program 1 times [2023-08-30 10:22:54,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:54,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910391069] [2023-08-30 10:22:54,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:54,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:54,793 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 10:22:54,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:54,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910391069] [2023-08-30 10:22:54,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910391069] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:22:54,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20801488] [2023-08-30 10:22:54,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:54,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:54,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:22:54,797 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:22:54,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 10:22:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:54,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:22:54,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:22:54,882 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 10:22:54,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:22:54,920 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 10:22:54,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20801488] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:22:54,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:22:54,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:22:54,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953474923] [2023-08-30 10:22:54,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:22:54,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:22:54,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:54,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:22:54,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:22:54,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 576 [2023-08-30 10:22:54,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 229 flow. Second operand has 13 states, 13 states have (on average 257.53846153846155) internal successors, (3348), 13 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:54,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:54,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 576 [2023-08-30 10:22:54,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:56,607 INFO L130 PetriNetUnfolder]: 19428/29764 cut-off events. [2023-08-30 10:22:56,608 INFO L131 PetriNetUnfolder]: For 991/991 co-relation queries the response was YES. [2023-08-30 10:22:56,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59871 conditions, 29764 events. 19428/29764 cut-off events. For 991/991 co-relation queries the response was YES. Maximal size of possible extension queue 1074. Compared 208747 event pairs, 18228 based on Foata normal form. 6/21414 useless extension candidates. Maximal degree in co-relation 59853. Up to 28373 conditions per place. [2023-08-30 10:22:56,788 INFO L137 encePairwiseOnDemand]: 573/576 looper letters, 71 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2023-08-30 10:22:56,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 93 transitions, 429 flow [2023-08-30 10:22:56,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:22:56,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:22:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3159 transitions. [2023-08-30 10:22:56,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45703125 [2023-08-30 10:22:56,812 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3159 transitions. [2023-08-30 10:22:56,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3159 transitions. [2023-08-30 10:22:56,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:56,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3159 transitions. [2023-08-30 10:22:56,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 263.25) internal successors, (3159), 12 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:56,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 576.0) internal successors, (7488), 13 states have internal predecessors, (7488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:56,837 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 576.0) internal successors, (7488), 13 states have internal predecessors, (7488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:56,838 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 229 flow. Second operand 12 states and 3159 transitions. [2023-08-30 10:22:56,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 93 transitions, 429 flow [2023-08-30 10:22:56,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 93 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:22:56,841 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 311 flow [2023-08-30 10:22:56,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=311, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2023-08-30 10:22:56,842 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 23 predicate places. [2023-08-30 10:22:56,842 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 311 flow [2023-08-30 10:22:56,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 257.53846153846155) internal successors, (3348), 13 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:56,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:56,843 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:56,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 10:22:57,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:57,060 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:22:57,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:57,061 INFO L85 PathProgramCache]: Analyzing trace with hash -184560645, now seen corresponding path program 2 times [2023-08-30 10:22:57,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:57,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756443180] [2023-08-30 10:22:57,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:57,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:22:57,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:57,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756443180] [2023-08-30 10:22:57,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756443180] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:22:57,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:22:57,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:22:57,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774812490] [2023-08-30 10:22:57,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:22:57,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:22:57,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:57,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:22:57,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:22:57,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 576 [2023-08-30 10:22:57,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 247.5) internal successors, (1485), 6 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:57,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:57,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 576 [2023-08-30 10:22:57,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:59,382 INFO L130 PetriNetUnfolder]: 20502/32272 cut-off events. [2023-08-30 10:22:59,382 INFO L131 PetriNetUnfolder]: For 1032/1032 co-relation queries the response was YES. [2023-08-30 10:22:59,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65291 conditions, 32272 events. 20502/32272 cut-off events. For 1032/1032 co-relation queries the response was YES. Maximal size of possible extension queue 1245. Compared 239935 event pairs, 7568 based on Foata normal form. 0/24070 useless extension candidates. Maximal degree in co-relation 65265. Up to 24028 conditions per place. [2023-08-30 10:22:59,622 INFO L137 encePairwiseOnDemand]: 560/576 looper letters, 178 selfloop transitions, 14 changer transitions 0/203 dead transitions. [2023-08-30 10:22:59,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 203 transitions, 950 flow [2023-08-30 10:22:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:22:59,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:22:59,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1420 transitions. [2023-08-30 10:22:59,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2023-08-30 10:22:59,625 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1420 transitions. [2023-08-30 10:22:59,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1420 transitions. [2023-08-30 10:22:59,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:59,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1420 transitions. [2023-08-30 10:22:59,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:59,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 576.0) internal successors, (3456), 6 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:59,631 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 576.0) internal successors, (3456), 6 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:59,631 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 311 flow. Second operand 5 states and 1420 transitions. [2023-08-30 10:22:59,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 203 transitions, 950 flow [2023-08-30 10:22:59,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 203 transitions, 902 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 10:22:59,635 INFO L231 Difference]: Finished difference. Result has 113 places, 105 transitions, 379 flow [2023-08-30 10:22:59,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=113, PETRI_TRANSITIONS=105} [2023-08-30 10:22:59,636 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 26 predicate places. [2023-08-30 10:22:59,636 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 105 transitions, 379 flow [2023-08-30 10:22:59,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 247.5) internal successors, (1485), 6 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:59,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:59,636 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:59,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 10:22:59,637 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:22:59,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:59,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1902508773, now seen corresponding path program 1 times [2023-08-30 10:22:59,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:59,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639485578] [2023-08-30 10:22:59,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:59,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:59,672 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:22:59,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:59,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639485578] [2023-08-30 10:22:59,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639485578] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:22:59,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129392176] [2023-08-30 10:22:59,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:59,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:59,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:22:59,678 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:22:59,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 10:22:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:59,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:22:59,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:22:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:22:59,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:22:59,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129392176] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:22:59,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:22:59,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 10:22:59,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688769427] [2023-08-30 10:22:59,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:22:59,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:22:59,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:59,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:22:59,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:22:59,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 576 [2023-08-30 10:22:59,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 105 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 259.25) internal successors, (1037), 4 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:59,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:59,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 576 [2023-08-30 10:22:59,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:02,023 INFO L130 PetriNetUnfolder]: 19844/31375 cut-off events. [2023-08-30 10:23:02,024 INFO L131 PetriNetUnfolder]: For 7028/7028 co-relation queries the response was YES. [2023-08-30 10:23:02,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71502 conditions, 31375 events. 19844/31375 cut-off events. For 7028/7028 co-relation queries the response was YES. Maximal size of possible extension queue 1211. Compared 233698 event pairs, 10465 based on Foata normal form. 0/25320 useless extension candidates. Maximal degree in co-relation 71473. Up to 30179 conditions per place. [2023-08-30 10:23:02,313 INFO L137 encePairwiseOnDemand]: 573/576 looper letters, 108 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2023-08-30 10:23:02,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 121 transitions, 637 flow [2023-08-30 10:23:02,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:23:02,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:23:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1117 transitions. [2023-08-30 10:23:02,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4848090277777778 [2023-08-30 10:23:02,316 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1117 transitions. [2023-08-30 10:23:02,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1117 transitions. [2023-08-30 10:23:02,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:02,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1117 transitions. [2023-08-30 10:23:02,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 279.25) internal successors, (1117), 4 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:02,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 576.0) internal successors, (2880), 5 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:02,320 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 576.0) internal successors, (2880), 5 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:02,320 INFO L175 Difference]: Start difference. First operand has 113 places, 105 transitions, 379 flow. Second operand 4 states and 1117 transitions. [2023-08-30 10:23:02,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 121 transitions, 637 flow [2023-08-30 10:23:02,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 121 transitions, 637 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:23:02,333 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 379 flow [2023-08-30 10:23:02,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=379, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2023-08-30 10:23:02,334 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 28 predicate places. [2023-08-30 10:23:02,334 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 379 flow [2023-08-30 10:23:02,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 259.25) internal successors, (1037), 4 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:02,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:02,335 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:02,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 10:23:02,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 10:23:02,537 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:02,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:02,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1902508774, now seen corresponding path program 1 times [2023-08-30 10:23:02,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:02,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921683917] [2023-08-30 10:23:02,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:02,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:23:02,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:02,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921683917] [2023-08-30 10:23:02,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921683917] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:23:02,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:23:02,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:23:02,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286770732] [2023-08-30 10:23:02,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:23:02,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:23:02,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:02,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:23:02,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:23:02,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 576 [2023-08-30 10:23:02,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:02,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:02,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 576 [2023-08-30 10:23:02,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:04,489 INFO L130 PetriNetUnfolder]: 19044/30554 cut-off events. [2023-08-30 10:23:04,489 INFO L131 PetriNetUnfolder]: For 6314/6368 co-relation queries the response was YES. [2023-08-30 10:23:04,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69099 conditions, 30554 events. 19044/30554 cut-off events. For 6314/6368 co-relation queries the response was YES. Maximal size of possible extension queue 1057. Compared 232784 event pairs, 3283 based on Foata normal form. 0/25006 useless extension candidates. Maximal degree in co-relation 69069. Up to 27251 conditions per place. [2023-08-30 10:23:04,724 INFO L137 encePairwiseOnDemand]: 572/576 looper letters, 129 selfloop transitions, 5 changer transitions 0/145 dead transitions. [2023-08-30 10:23:04,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 145 transitions, 769 flow [2023-08-30 10:23:04,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:23:04,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:23:04,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 876 transitions. [2023-08-30 10:23:04,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2023-08-30 10:23:04,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 876 transitions. [2023-08-30 10:23:04,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 876 transitions. [2023-08-30 10:23:04,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:04,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 876 transitions. [2023-08-30 10:23:04,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:04,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 576.0) internal successors, (2304), 4 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:04,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 576.0) internal successors, (2304), 4 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:04,729 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 379 flow. Second operand 3 states and 876 transitions. [2023-08-30 10:23:04,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 145 transitions, 769 flow [2023-08-30 10:23:04,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 145 transitions, 766 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:23:04,750 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 393 flow [2023-08-30 10:23:04,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2023-08-30 10:23:04,750 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 28 predicate places. [2023-08-30 10:23:04,750 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 393 flow [2023-08-30 10:23:04,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:04,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:04,751 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:04,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 10:23:04,751 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:04,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:04,752 INFO L85 PathProgramCache]: Analyzing trace with hash 193415783, now seen corresponding path program 1 times [2023-08-30 10:23:04,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:04,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798432227] [2023-08-30 10:23:04,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:04,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:04,889 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:23:04,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:04,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798432227] [2023-08-30 10:23:04,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798432227] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:23:04,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:23:04,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:23:04,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588862743] [2023-08-30 10:23:04,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:23:04,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:23:04,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:04,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:23:04,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:23:05,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 576 [2023-08-30 10:23:05,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 393 flow. Second operand has 8 states, 8 states have (on average 243.625) internal successors, (1949), 8 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 10:23:05,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:05,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 576 [2023-08-30 10:23:05,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:07,629 INFO L130 PetriNetUnfolder]: 24389/38457 cut-off events. [2023-08-30 10:23:07,629 INFO L131 PetriNetUnfolder]: For 12216/12264 co-relation queries the response was YES. [2023-08-30 10:23:07,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88786 conditions, 38457 events. 24389/38457 cut-off events. For 12216/12264 co-relation queries the response was YES. Maximal size of possible extension queue 1555. Compared 294356 event pairs, 5951 based on Foata normal form. 0/31363 useless extension candidates. Maximal degree in co-relation 88756. Up to 22116 conditions per place. [2023-08-30 10:23:08,005 INFO L137 encePairwiseOnDemand]: 561/576 looper letters, 295 selfloop transitions, 29 changer transitions 0/335 dead transitions. [2023-08-30 10:23:08,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 335 transitions, 1690 flow [2023-08-30 10:23:08,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:23:08,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:23:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2488 transitions. [2023-08-30 10:23:08,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799382716049383 [2023-08-30 10:23:08,008 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2488 transitions. [2023-08-30 10:23:08,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2488 transitions. [2023-08-30 10:23:08,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:08,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2488 transitions. [2023-08-30 10:23:08,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 276.44444444444446) internal successors, (2488), 9 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:08,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 576.0) internal successors, (5760), 10 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:08,015 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 576.0) internal successors, (5760), 10 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:08,015 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 393 flow. Second operand 9 states and 2488 transitions. [2023-08-30 10:23:08,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 335 transitions, 1690 flow [2023-08-30 10:23:08,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 335 transitions, 1673 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:23:08,034 INFO L231 Difference]: Finished difference. Result has 125 places, 118 transitions, 557 flow [2023-08-30 10:23:08,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=557, PETRI_PLACES=125, PETRI_TRANSITIONS=118} [2023-08-30 10:23:08,034 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 38 predicate places. [2023-08-30 10:23:08,034 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 118 transitions, 557 flow [2023-08-30 10:23:08,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 243.625) internal successors, (1949), 8 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 10:23:08,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:08,035 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:08,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 10:23:08,035 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:08,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash 193415782, now seen corresponding path program 1 times [2023-08-30 10:23:08,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:08,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669053861] [2023-08-30 10:23:08,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:08,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:08,092 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:23:08,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:08,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669053861] [2023-08-30 10:23:08,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669053861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:23:08,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:23:08,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:23:08,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103669500] [2023-08-30 10:23:08,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:23:08,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:23:08,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:08,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:23:08,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:23:08,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 576 [2023-08-30 10:23:08,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 118 transitions, 557 flow. Second operand has 4 states, 4 states have (on average 248.25) internal successors, (993), 4 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:08,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:08,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 576 [2023-08-30 10:23:08,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:11,187 INFO L130 PetriNetUnfolder]: 29303/46667 cut-off events. [2023-08-30 10:23:11,187 INFO L131 PetriNetUnfolder]: For 34125/34125 co-relation queries the response was YES. [2023-08-30 10:23:11,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117782 conditions, 46667 events. 29303/46667 cut-off events. For 34125/34125 co-relation queries the response was YES. Maximal size of possible extension queue 1831. Compared 371980 event pairs, 13094 based on Foata normal form. 825/41105 useless extension candidates. Maximal degree in co-relation 117747. Up to 24207 conditions per place. [2023-08-30 10:23:11,651 INFO L137 encePairwiseOnDemand]: 565/576 looper letters, 236 selfloop transitions, 35 changer transitions 0/282 dead transitions. [2023-08-30 10:23:11,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 282 transitions, 1702 flow [2023-08-30 10:23:11,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:23:11,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:23:11,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1442 transitions. [2023-08-30 10:23:11,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5006944444444444 [2023-08-30 10:23:11,653 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1442 transitions. [2023-08-30 10:23:11,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1442 transitions. [2023-08-30 10:23:11,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:11,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1442 transitions. [2023-08-30 10:23:11,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 288.4) internal successors, (1442), 5 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:11,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 576.0) internal successors, (3456), 6 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:11,674 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 576.0) internal successors, (3456), 6 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:11,674 INFO L175 Difference]: Start difference. First operand has 125 places, 118 transitions, 557 flow. Second operand 5 states and 1442 transitions. [2023-08-30 10:23:11,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 282 transitions, 1702 flow [2023-08-30 10:23:12,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 282 transitions, 1623 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-30 10:23:12,018 INFO L231 Difference]: Finished difference. Result has 128 places, 136 transitions, 792 flow [2023-08-30 10:23:12,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=792, PETRI_PLACES=128, PETRI_TRANSITIONS=136} [2023-08-30 10:23:12,019 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 41 predicate places. [2023-08-30 10:23:12,019 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 136 transitions, 792 flow [2023-08-30 10:23:12,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.25) internal successors, (993), 4 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:12,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:12,019 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:12,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 10:23:12,019 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:12,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:12,020 INFO L85 PathProgramCache]: Analyzing trace with hash 355300707, now seen corresponding path program 1 times [2023-08-30 10:23:12,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:12,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974728640] [2023-08-30 10:23:12,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:12,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:12,050 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:23:12,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:12,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974728640] [2023-08-30 10:23:12,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974728640] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:23:12,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270251367] [2023-08-30 10:23:12,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:12,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:12,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:23:12,057 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:23:12,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 10:23:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:12,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:23:12,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:23:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:23:12,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:23:12,169 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:23:12,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270251367] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:23:12,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:23:12,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 10:23:12,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35602557] [2023-08-30 10:23:12,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:23:12,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:23:12,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:12,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:23:12,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:23:12,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 576 [2023-08-30 10:23:12,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 136 transitions, 792 flow. Second operand has 7 states, 7 states have (on average 259.14285714285717) internal successors, (1814), 7 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:12,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:12,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 576 [2023-08-30 10:23:12,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:12,622 INFO L130 PetriNetUnfolder]: 2749/5049 cut-off events. [2023-08-30 10:23:12,623 INFO L131 PetriNetUnfolder]: For 9512/9512 co-relation queries the response was YES. [2023-08-30 10:23:12,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17361 conditions, 5049 events. 2749/5049 cut-off events. For 9512/9512 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 34790 event pairs, 288 based on Foata normal form. 598/5259 useless extension candidates. Maximal degree in co-relation 17323. Up to 3390 conditions per place. [2023-08-30 10:23:12,648 INFO L137 encePairwiseOnDemand]: 573/576 looper letters, 146 selfloop transitions, 3 changer transitions 2/158 dead transitions. [2023-08-30 10:23:12,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 158 transitions, 1223 flow [2023-08-30 10:23:12,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:23:12,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:23:12,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1380 transitions. [2023-08-30 10:23:12,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2023-08-30 10:23:12,651 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1380 transitions. [2023-08-30 10:23:12,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1380 transitions. [2023-08-30 10:23:12,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:12,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1380 transitions. [2023-08-30 10:23:12,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 276.0) internal successors, (1380), 5 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:12,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 576.0) internal successors, (3456), 6 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:12,654 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 576.0) internal successors, (3456), 6 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:12,654 INFO L175 Difference]: Start difference. First operand has 128 places, 136 transitions, 792 flow. Second operand 5 states and 1380 transitions. [2023-08-30 10:23:12,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 158 transitions, 1223 flow [2023-08-30 10:23:12,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 158 transitions, 1193 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-08-30 10:23:12,669 INFO L231 Difference]: Finished difference. Result has 103 places, 85 transitions, 500 flow [2023-08-30 10:23:12,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=500, PETRI_PLACES=103, PETRI_TRANSITIONS=85} [2023-08-30 10:23:12,670 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 16 predicate places. [2023-08-30 10:23:12,670 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 85 transitions, 500 flow [2023-08-30 10:23:12,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 259.14285714285717) internal successors, (1814), 7 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:12,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:12,670 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:12,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 10:23:12,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 10:23:12,875 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:12,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:12,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1806873007, now seen corresponding path program 1 times [2023-08-30 10:23:12,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:12,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244725613] [2023-08-30 10:23:12,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:12,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:23:13,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:13,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244725613] [2023-08-30 10:23:13,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244725613] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:23:13,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877631706] [2023-08-30 10:23:13,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:13,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:13,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:23:13,049 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:23:13,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 10:23:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:13,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 10:23:13,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:23:13,210 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:23:13,210 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 11 treesize of output 11 [2023-08-30 10:23:13,258 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 15 treesize of output 11 [2023-08-30 10:23:13,305 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 18 treesize of output 20 [2023-08-30 10:23:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:23:13,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:23:13,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877631706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:23:13,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:23:13,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-30 10:23:13,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339711473] [2023-08-30 10:23:13,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:23:13,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:23:13,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:13,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:23:13,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:23:13,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 576 [2023-08-30 10:23:13,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 85 transitions, 500 flow. Second operand has 7 states, 7 states have (on average 242.14285714285714) internal successors, (1695), 7 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:13,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:13,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 576 [2023-08-30 10:23:13,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:14,020 INFO L130 PetriNetUnfolder]: 2723/4879 cut-off events. [2023-08-30 10:23:14,020 INFO L131 PetriNetUnfolder]: For 14050/14052 co-relation queries the response was YES. [2023-08-30 10:23:14,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16736 conditions, 4879 events. 2723/4879 cut-off events. For 14050/14052 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 33004 event pairs, 1320 based on Foata normal form. 45/4530 useless extension candidates. Maximal degree in co-relation 16699. Up to 2261 conditions per place. [2023-08-30 10:23:14,044 INFO L137 encePairwiseOnDemand]: 565/576 looper letters, 115 selfloop transitions, 24 changer transitions 0/146 dead transitions. [2023-08-30 10:23:14,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 146 transitions, 1011 flow [2023-08-30 10:23:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:23:14,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:23:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1785 transitions. [2023-08-30 10:23:14,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2023-08-30 10:23:14,046 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1785 transitions. [2023-08-30 10:23:14,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1785 transitions. [2023-08-30 10:23:14,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:14,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1785 transitions. [2023-08-30 10:23:14,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:14,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 576.0) internal successors, (4608), 8 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:14,050 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 576.0) internal successors, (4608), 8 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:14,050 INFO L175 Difference]: Start difference. First operand has 103 places, 85 transitions, 500 flow. Second operand 7 states and 1785 transitions. [2023-08-30 10:23:14,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 146 transitions, 1011 flow [2023-08-30 10:23:14,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 146 transitions, 994 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 10:23:14,062 INFO L231 Difference]: Finished difference. Result has 108 places, 88 transitions, 610 flow [2023-08-30 10:23:14,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=610, PETRI_PLACES=108, PETRI_TRANSITIONS=88} [2023-08-30 10:23:14,063 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 21 predicate places. [2023-08-30 10:23:14,063 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 88 transitions, 610 flow [2023-08-30 10:23:14,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 242.14285714285714) internal successors, (1695), 7 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:14,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:14,063 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:14,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 10:23:14,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 10:23:14,268 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:14,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:14,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1913876334, now seen corresponding path program 1 times [2023-08-30 10:23:14,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:14,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731653792] [2023-08-30 10:23:14,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:14,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:14,432 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:23:14,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:14,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731653792] [2023-08-30 10:23:14,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731653792] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:23:14,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683700570] [2023-08-30 10:23:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:14,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:14,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:23:14,441 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:23:14,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 10:23:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:14,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:23:14,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:23:14,584 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 7 treesize of output 6 [2023-08-30 10:23:14,640 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:23:14,641 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 11 treesize of output 11 [2023-08-30 10:23:14,655 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 13 treesize of output 15 [2023-08-30 10:23:14,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2023-08-30 10:23:14,743 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 20 treesize of output 22 [2023-08-30 10:23:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:23:14,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:23:14,774 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_956 (Array Int Int))) (< 0 (+ 2147483648 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_956) |c_~#a~0.base|) (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|))))) is different from false [2023-08-30 10:23:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:23:19,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683700570] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:23:19,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:23:19,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 16 [2023-08-30 10:23:19,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434851239] [2023-08-30 10:23:19,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:23:19,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 10:23:19,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:19,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 10:23:19,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=4, NotChecked=30, Total=306 [2023-08-30 10:23:19,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 576 [2023-08-30 10:23:19,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 88 transitions, 610 flow. Second operand has 18 states, 18 states have (on average 213.38888888888889) internal successors, (3841), 18 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:19,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:19,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 576 [2023-08-30 10:23:19,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:20,512 INFO L130 PetriNetUnfolder]: 2708/4855 cut-off events. [2023-08-30 10:23:20,513 INFO L131 PetriNetUnfolder]: For 15826/15828 co-relation queries the response was YES. [2023-08-30 10:23:20,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17010 conditions, 4855 events. 2708/4855 cut-off events. For 15826/15828 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 32588 event pairs, 940 based on Foata normal form. 43/4526 useless extension candidates. Maximal degree in co-relation 16971. Up to 2083 conditions per place. [2023-08-30 10:23:20,536 INFO L137 encePairwiseOnDemand]: 562/576 looper letters, 122 selfloop transitions, 31 changer transitions 29/189 dead transitions. [2023-08-30 10:23:20,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 189 transitions, 1378 flow [2023-08-30 10:23:20,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:23:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:23:20,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2258 transitions. [2023-08-30 10:23:20,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3920138888888889 [2023-08-30 10:23:20,538 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2258 transitions. [2023-08-30 10:23:20,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2258 transitions. [2023-08-30 10:23:20,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:20,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2258 transitions. [2023-08-30 10:23:20,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 225.8) internal successors, (2258), 10 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:20,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 576.0) internal successors, (6336), 11 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:20,544 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 576.0) internal successors, (6336), 11 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:20,544 INFO L175 Difference]: Start difference. First operand has 108 places, 88 transitions, 610 flow. Second operand 10 states and 2258 transitions. [2023-08-30 10:23:20,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 189 transitions, 1378 flow [2023-08-30 10:23:20,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 189 transitions, 1367 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-30 10:23:20,560 INFO L231 Difference]: Finished difference. Result has 117 places, 93 transitions, 790 flow [2023-08-30 10:23:20,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=790, PETRI_PLACES=117, PETRI_TRANSITIONS=93} [2023-08-30 10:23:20,562 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 30 predicate places. [2023-08-30 10:23:20,562 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 93 transitions, 790 flow [2023-08-30 10:23:20,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 213.38888888888889) internal successors, (3841), 18 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:20,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:20,563 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:20,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-30 10:23:20,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:20,768 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:20,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:20,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1978053345, now seen corresponding path program 1 times [2023-08-30 10:23:20,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:20,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887727163] [2023-08-30 10:23:20,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:20,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:20,914 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:23:20,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:20,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887727163] [2023-08-30 10:23:20,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887727163] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:23:20,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382052360] [2023-08-30 10:23:20,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:20,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:20,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:23:20,916 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:23:20,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 10:23:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:21,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:23:21,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:23:21,050 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 7 treesize of output 6 [2023-08-30 10:23:21,092 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:23:21,093 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 11 treesize of output 11 [2023-08-30 10:23:21,106 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 13 treesize of output 15 [2023-08-30 10:23:21,123 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 13 treesize of output 15 [2023-08-30 10:23:21,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2023-08-30 10:23:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:23:21,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:23:21,246 WARN L839 $PredicateComparison]: unable to prove that (forall ((|~#a~0.offset| Int) (v_ArrVal_1033 (Array Int Int)) (|t_funThread2of2ForFork0_~i~0#1| Int)) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1033) |c_~#a~0.base|) (+ (* 28 |t_funThread2of2ForFork0_~i~0#1|) |~#a~0.offset|))))) is different from false [2023-08-30 10:23:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-30 10:23:21,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382052360] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:23:21,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:23:21,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2023-08-30 10:23:21,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431616758] [2023-08-30 10:23:21,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:23:21,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 10:23:21,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:21,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 10:23:21,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=177, Unknown=1, NotChecked=28, Total=272 [2023-08-30 10:23:21,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 576 [2023-08-30 10:23:21,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 93 transitions, 790 flow. Second operand has 17 states, 17 states have (on average 213.7058823529412) internal successors, (3633), 17 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:21,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:21,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 576 [2023-08-30 10:23:21,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:22,371 INFO L130 PetriNetUnfolder]: 2500/4704 cut-off events. [2023-08-30 10:23:22,372 INFO L131 PetriNetUnfolder]: For 22045/22047 co-relation queries the response was YES. [2023-08-30 10:23:22,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18477 conditions, 4704 events. 2500/4704 cut-off events. For 22045/22047 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 33433 event pairs, 614 based on Foata normal form. 15/4424 useless extension candidates. Maximal degree in co-relation 18435. Up to 2547 conditions per place. [2023-08-30 10:23:22,399 INFO L137 encePairwiseOnDemand]: 562/576 looper letters, 217 selfloop transitions, 74 changer transitions 17/315 dead transitions. [2023-08-30 10:23:22,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 315 transitions, 3280 flow [2023-08-30 10:23:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:23:22,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:23:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2938 transitions. [2023-08-30 10:23:22,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2023-08-30 10:23:22,402 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2938 transitions. [2023-08-30 10:23:22,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2938 transitions. [2023-08-30 10:23:22,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:22,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2938 transitions. [2023-08-30 10:23:22,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 226.0) internal successors, (2938), 13 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:22,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 576.0) internal successors, (8064), 14 states have internal predecessors, (8064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:22,409 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 576.0) internal successors, (8064), 14 states have internal predecessors, (8064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:22,410 INFO L175 Difference]: Start difference. First operand has 117 places, 93 transitions, 790 flow. Second operand 13 states and 2938 transitions. [2023-08-30 10:23:22,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 315 transitions, 3280 flow [2023-08-30 10:23:22,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 315 transitions, 3186 flow, removed 35 selfloop flow, removed 4 redundant places. [2023-08-30 10:23:22,433 INFO L231 Difference]: Finished difference. Result has 131 places, 163 transitions, 1938 flow [2023-08-30 10:23:22,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1938, PETRI_PLACES=131, PETRI_TRANSITIONS=163} [2023-08-30 10:23:22,437 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 44 predicate places. [2023-08-30 10:23:22,437 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 163 transitions, 1938 flow [2023-08-30 10:23:22,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 213.7058823529412) internal successors, (3633), 17 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:22,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:22,438 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:22,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-30 10:23:22,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-30 10:23:22,643 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:22,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:22,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1978053246, now seen corresponding path program 1 times [2023-08-30 10:23:22,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:22,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989779384] [2023-08-30 10:23:22,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:22,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:22,704 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 10:23:22,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:22,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989779384] [2023-08-30 10:23:22,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989779384] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:23:22,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:23:22,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:23:22,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417398588] [2023-08-30 10:23:22,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:23:22,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:23:22,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:22,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:23:22,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:23:22,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 576 [2023-08-30 10:23:22,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 163 transitions, 1938 flow. Second operand has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:22,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:22,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 576 [2023-08-30 10:23:22,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:23,334 INFO L130 PetriNetUnfolder]: 2602/5099 cut-off events. [2023-08-30 10:23:23,334 INFO L131 PetriNetUnfolder]: For 30413/30415 co-relation queries the response was YES. [2023-08-30 10:23:23,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22687 conditions, 5099 events. 2602/5099 cut-off events. For 30413/30415 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 38249 event pairs, 771 based on Foata normal form. 30/5065 useless extension candidates. Maximal degree in co-relation 22635. Up to 2424 conditions per place. [2023-08-30 10:23:23,365 INFO L137 encePairwiseOnDemand]: 565/576 looper letters, 189 selfloop transitions, 84 changer transitions 4/284 dead transitions. [2023-08-30 10:23:23,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 284 transitions, 3823 flow [2023-08-30 10:23:23,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:23:23,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:23:23,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1333 transitions. [2023-08-30 10:23:23,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46284722222222224 [2023-08-30 10:23:23,367 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1333 transitions. [2023-08-30 10:23:23,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1333 transitions. [2023-08-30 10:23:23,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:23,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1333 transitions. [2023-08-30 10:23:23,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 266.6) internal successors, (1333), 5 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:23,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 576.0) internal successors, (3456), 6 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:23,371 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 576.0) internal successors, (3456), 6 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:23,371 INFO L175 Difference]: Start difference. First operand has 131 places, 163 transitions, 1938 flow. Second operand 5 states and 1333 transitions. [2023-08-30 10:23:23,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 284 transitions, 3823 flow [2023-08-30 10:23:23,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 284 transitions, 3799 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-08-30 10:23:23,442 INFO L231 Difference]: Finished difference. Result has 138 places, 203 transitions, 2957 flow [2023-08-30 10:23:23,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=1910, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2957, PETRI_PLACES=138, PETRI_TRANSITIONS=203} [2023-08-30 10:23:23,447 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 51 predicate places. [2023-08-30 10:23:23,447 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 203 transitions, 2957 flow [2023-08-30 10:23:23,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:23,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:23,447 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:23,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 10:23:23,448 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:23,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:23,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1516128579, now seen corresponding path program 1 times [2023-08-30 10:23:23,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:23,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158381275] [2023-08-30 10:23:23,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:23,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:23,556 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:23:23,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:23,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158381275] [2023-08-30 10:23:23,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158381275] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:23:23,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:23:23,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:23:23,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028303544] [2023-08-30 10:23:23,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:23:23,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:23:23,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:23,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:23:23,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:23:23,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 576 [2023-08-30 10:23:23,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 203 transitions, 2957 flow. Second operand has 5 states, 5 states have (on average 240.4) internal successors, (1202), 5 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 10:23:23,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:23,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 576 [2023-08-30 10:23:23,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:23,965 INFO L130 PetriNetUnfolder]: 1093/2466 cut-off events. [2023-08-30 10:23:23,966 INFO L131 PetriNetUnfolder]: For 19805/19805 co-relation queries the response was YES. [2023-08-30 10:23:23,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11706 conditions, 2466 events. 1093/2466 cut-off events. For 19805/19805 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17171 event pairs, 309 based on Foata normal form. 218/2627 useless extension candidates. Maximal degree in co-relation 11649. Up to 1231 conditions per place. [2023-08-30 10:23:23,980 INFO L137 encePairwiseOnDemand]: 563/576 looper letters, 145 selfloop transitions, 16 changer transitions 29/196 dead transitions. [2023-08-30 10:23:23,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 196 transitions, 2870 flow [2023-08-30 10:23:23,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:23:23,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:23:23,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1026 transitions. [2023-08-30 10:23:23,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2023-08-30 10:23:23,982 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1026 transitions. [2023-08-30 10:23:23,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1026 transitions. [2023-08-30 10:23:23,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:23,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1026 transitions. [2023-08-30 10:23:23,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 256.5) internal successors, (1026), 4 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:23,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 576.0) internal successors, (2880), 5 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:23,985 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 576.0) internal successors, (2880), 5 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:23,985 INFO L175 Difference]: Start difference. First operand has 138 places, 203 transitions, 2957 flow. Second operand 4 states and 1026 transitions. [2023-08-30 10:23:23,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 196 transitions, 2870 flow [2023-08-30 10:23:24,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 196 transitions, 2623 flow, removed 107 selfloop flow, removed 6 redundant places. [2023-08-30 10:23:24,026 INFO L231 Difference]: Finished difference. Result has 133 places, 124 transitions, 1371 flow [2023-08-30 10:23:24,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=1348, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1371, PETRI_PLACES=133, PETRI_TRANSITIONS=124} [2023-08-30 10:23:24,027 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 46 predicate places. [2023-08-30 10:23:24,027 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 124 transitions, 1371 flow [2023-08-30 10:23:24,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 240.4) internal successors, (1202), 5 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 10:23:24,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:24,027 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:24,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 10:23:24,028 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:24,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:24,028 INFO L85 PathProgramCache]: Analyzing trace with hash 379202408, now seen corresponding path program 2 times [2023-08-30 10:23:24,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:24,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117786378] [2023-08-30 10:23:24,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:24,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:24,183 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:23:24,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:24,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117786378] [2023-08-30 10:23:24,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117786378] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:23:24,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160961939] [2023-08-30 10:23:24,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:23:24,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:24,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:23:24,189 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:23:24,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 10:23:24,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:23:24,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:23:24,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 10:23:24,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:23:24,336 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 7 treesize of output 6 [2023-08-30 10:23:24,383 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:23:24,383 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 11 treesize of output 11 [2023-08-30 10:23:24,398 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 13 treesize of output 15 [2023-08-30 10:23:24,418 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 13 treesize of output 15 [2023-08-30 10:23:24,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2023-08-30 10:23:24,517 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 20 treesize of output 22 [2023-08-30 10:23:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:23:24,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:23:24,606 WARN L839 $PredicateComparison]: unable to prove that (forall ((|~#a~0.offset| Int) (|t_funThread2of2ForFork0_~i~0#1| Int) (v_ArrVal_1192 Int) (v_ArrVal_1193 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#a~0.base|)) (.cse1 (+ (* 28 |t_funThread2of2ForFork0_~i~0#1|) |~#a~0.offset|))) (or (< v_ArrVal_1192 (+ (select .cse0 .cse1) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#a~0.base| (store .cse0 .cse1 v_ArrVal_1192)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1193) |c_~#a~0.base|) .cse1) 2147483648))))) is different from false [2023-08-30 10:23:24,670 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1190 (Array Int Int)) (|~#a~0.offset| Int) (|t_funThread2of2ForFork0_~i~0#1| Int) (v_ArrVal_1192 Int) (v_ArrVal_1193 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1190))) (let ((.cse1 (select .cse0 |c_~#a~0.base|)) (.cse2 (+ (* 28 |t_funThread2of2ForFork0_~i~0#1|) |~#a~0.offset|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#a~0.base| (store .cse1 .cse2 v_ArrVal_1192)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1193) |c_~#a~0.base|) .cse2) 2147483648)) (< v_ArrVal_1192 (+ (select .cse1 .cse2) 1)))))) is different from false [2023-08-30 10:23:24,820 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 5 not checked. [2023-08-30 10:23:24,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160961939] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:23:24,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:23:24,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 16 [2023-08-30 10:23:24,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31844899] [2023-08-30 10:23:24,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:23:24,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 10:23:24,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:24,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 10:23:24,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=183, Unknown=2, NotChecked=58, Total=306 [2023-08-30 10:23:24,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 576 [2023-08-30 10:23:24,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 124 transitions, 1371 flow. Second operand has 18 states, 18 states have (on average 213.66666666666666) internal successors, (3846), 18 states have internal predecessors, (3846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:24,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:24,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 576 [2023-08-30 10:23:24,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:25,687 INFO L130 PetriNetUnfolder]: 1039/2451 cut-off events. [2023-08-30 10:23:25,687 INFO L131 PetriNetUnfolder]: For 16230/16254 co-relation queries the response was YES. [2023-08-30 10:23:25,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11904 conditions, 2451 events. 1039/2451 cut-off events. For 16230/16254 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17820 event pairs, 357 based on Foata normal form. 14/2410 useless extension candidates. Maximal degree in co-relation 11849. Up to 1306 conditions per place. [2023-08-30 10:23:25,702 INFO L137 encePairwiseOnDemand]: 563/576 looper letters, 139 selfloop transitions, 35 changer transitions 4/185 dead transitions. [2023-08-30 10:23:25,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 185 transitions, 2079 flow [2023-08-30 10:23:25,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 10:23:25,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 10:23:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2434 transitions. [2023-08-30 10:23:25,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841540404040404 [2023-08-30 10:23:25,705 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2434 transitions. [2023-08-30 10:23:25,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2434 transitions. [2023-08-30 10:23:25,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:25,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2434 transitions. [2023-08-30 10:23:25,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 221.27272727272728) internal successors, (2434), 11 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:25,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 576.0) internal successors, (6912), 12 states have internal predecessors, (6912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:25,711 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 576.0) internal successors, (6912), 12 states have internal predecessors, (6912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:25,711 INFO L175 Difference]: Start difference. First operand has 133 places, 124 transitions, 1371 flow. Second operand 11 states and 2434 transitions. [2023-08-30 10:23:25,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 185 transitions, 2079 flow [2023-08-30 10:23:25,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 185 transitions, 2070 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 10:23:25,736 INFO L231 Difference]: Finished difference. Result has 144 places, 130 transitions, 1541 flow [2023-08-30 10:23:25,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1541, PETRI_PLACES=144, PETRI_TRANSITIONS=130} [2023-08-30 10:23:25,737 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 57 predicate places. [2023-08-30 10:23:25,737 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 130 transitions, 1541 flow [2023-08-30 10:23:25,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 213.66666666666666) internal successors, (3846), 18 states have internal predecessors, (3846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:25,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:25,738 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:25,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 10:23:25,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:25,942 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:25,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:25,943 INFO L85 PathProgramCache]: Analyzing trace with hash 379055567, now seen corresponding path program 2 times [2023-08-30 10:23:25,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:25,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576426490] [2023-08-30 10:23:25,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:25,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:23:26,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:26,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576426490] [2023-08-30 10:23:26,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576426490] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:23:26,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076091683] [2023-08-30 10:23:26,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:23:26,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:26,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:23:26,094 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:23:26,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 10:23:26,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:23:26,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:23:26,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 10:23:26,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:23:26,267 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:23:26,267 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 11 treesize of output 11 [2023-08-30 10:23:26,323 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 15 treesize of output 11 [2023-08-30 10:23:26,351 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 18 treesize of output 20 [2023-08-30 10:23:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:23:26,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:23:26,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076091683] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:23:26,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:23:26,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-30 10:23:26,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263756155] [2023-08-30 10:23:26,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:23:26,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:23:26,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:26,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:23:26,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:23:26,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 576 [2023-08-30 10:23:26,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 130 transitions, 1541 flow. Second operand has 7 states, 7 states have (on average 242.28571428571428) internal successors, (1696), 7 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:26,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:26,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 576 [2023-08-30 10:23:26,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:26,863 INFO L130 PetriNetUnfolder]: 1039/2496 cut-off events. [2023-08-30 10:23:26,864 INFO L131 PetriNetUnfolder]: For 18448/18450 co-relation queries the response was YES. [2023-08-30 10:23:26,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12448 conditions, 2496 events. 1039/2496 cut-off events. For 18448/18450 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 18391 event pairs, 480 based on Foata normal form. 17/2459 useless extension candidates. Maximal degree in co-relation 12390. Up to 1009 conditions per place. [2023-08-30 10:23:26,875 INFO L137 encePairwiseOnDemand]: 565/576 looper letters, 115 selfloop transitions, 26 changer transitions 16/163 dead transitions. [2023-08-30 10:23:26,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 163 transitions, 2136 flow [2023-08-30 10:23:26,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:23:26,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:23:26,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1508 transitions. [2023-08-30 10:23:26,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363425925925926 [2023-08-30 10:23:26,877 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1508 transitions. [2023-08-30 10:23:26,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1508 transitions. [2023-08-30 10:23:26,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:26,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1508 transitions. [2023-08-30 10:23:26,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.33333333333334) internal successors, (1508), 6 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:26,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 576.0) internal successors, (4032), 7 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:26,880 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 576.0) internal successors, (4032), 7 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:26,880 INFO L175 Difference]: Start difference. First operand has 144 places, 130 transitions, 1541 flow. Second operand 6 states and 1508 transitions. [2023-08-30 10:23:26,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 163 transitions, 2136 flow [2023-08-30 10:23:26,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 163 transitions, 2067 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-08-30 10:23:26,910 INFO L231 Difference]: Finished difference. Result has 145 places, 125 transitions, 1535 flow [2023-08-30 10:23:26,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1535, PETRI_PLACES=145, PETRI_TRANSITIONS=125} [2023-08-30 10:23:26,910 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 58 predicate places. [2023-08-30 10:23:26,910 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 125 transitions, 1535 flow [2023-08-30 10:23:26,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 242.28571428571428) internal successors, (1696), 7 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:26,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:26,911 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:26,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 10:23:27,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:27,115 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:27,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:27,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1930223250, now seen corresponding path program 1 times [2023-08-30 10:23:27,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:27,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961626785] [2023-08-30 10:23:27,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:27,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:23:27,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:27,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961626785] [2023-08-30 10:23:27,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961626785] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:23:27,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21557858] [2023-08-30 10:23:27,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:27,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:27,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:23:27,280 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:23:27,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 10:23:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:27,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-30 10:23:27,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:23:27,710 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 7 treesize of output 6 [2023-08-30 10:23:27,782 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:23:27,783 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 11 treesize of output 11 [2023-08-30 10:23:27,799 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 13 treesize of output 15 [2023-08-30 10:23:27,828 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 16 treesize of output 12 [2023-08-30 10:23:27,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:23:27,868 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 19 treesize of output 21 [2023-08-30 10:23:27,889 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 13 treesize of output 15 [2023-08-30 10:23:27,919 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:23:27,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 11 [2023-08-30 10:23:27,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-30 10:23:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:23:27,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:23:28,069 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1360 Int) (v_ArrVal_1358 (Array Int Int)) (v_ArrVal_1357 (Array Int Int)) (|v_t_funThread2of2ForFork0_~i~0#1_95| Int)) (let ((.cse0 (* |v_t_funThread2of2ForFork0_~i~0#1_95| 28))) (or (< (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1358) |c_~#a~0.base|) (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|) v_ArrVal_1360) (+ .cse0 |c_~#a~0.offset|)) 2147483647) (not (= (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_1357) |c_~#a~0.base|) (+ .cse0 |c_~#a~0.offset| (- 24))) 0))))) is different from false [2023-08-30 10:23:28,090 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:23:28,090 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 29 treesize of output 30 [2023-08-30 10:23:28,100 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:23:28,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 48 treesize of output 38 [2023-08-30 10:23:28,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-08-30 10:23:31,112 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:23:31,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21557858] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:23:31,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:23:31,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2023-08-30 10:23:31,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649605528] [2023-08-30 10:23:31,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:23:31,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 10:23:31,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:31,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 10:23:31,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=320, Unknown=5, NotChecked=38, Total=462 [2023-08-30 10:23:31,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 576 [2023-08-30 10:23:31,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 125 transitions, 1535 flow. Second operand has 22 states, 22 states have (on average 186.45454545454547) internal successors, (4102), 22 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:31,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:31,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 576 [2023-08-30 10:23:31,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:34,151 INFO L130 PetriNetUnfolder]: 1076/2470 cut-off events. [2023-08-30 10:23:34,152 INFO L131 PetriNetUnfolder]: For 19346/19352 co-relation queries the response was YES. [2023-08-30 10:23:34,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12629 conditions, 2470 events. 1076/2470 cut-off events. For 19346/19352 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 17542 event pairs, 173 based on Foata normal form. 39/2509 useless extension candidates. Maximal degree in co-relation 12568. Up to 1198 conditions per place. [2023-08-30 10:23:34,169 INFO L137 encePairwiseOnDemand]: 557/576 looper letters, 213 selfloop transitions, 87 changer transitions 0/306 dead transitions. [2023-08-30 10:23:34,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 306 transitions, 3730 flow [2023-08-30 10:23:34,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 10:23:34,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 10:23:34,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4819 transitions. [2023-08-30 10:23:34,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346527777777778 [2023-08-30 10:23:34,174 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4819 transitions. [2023-08-30 10:23:34,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4819 transitions. [2023-08-30 10:23:34,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:34,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4819 transitions. [2023-08-30 10:23:34,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 192.76) internal successors, (4819), 25 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:34,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 576.0) internal successors, (14976), 26 states have internal predecessors, (14976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:34,187 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 576.0) internal successors, (14976), 26 states have internal predecessors, (14976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:34,187 INFO L175 Difference]: Start difference. First operand has 145 places, 125 transitions, 1535 flow. Second operand 25 states and 4819 transitions. [2023-08-30 10:23:34,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 306 transitions, 3730 flow [2023-08-30 10:23:34,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 306 transitions, 3582 flow, removed 54 selfloop flow, removed 4 redundant places. [2023-08-30 10:23:34,233 INFO L231 Difference]: Finished difference. Result has 179 places, 195 transitions, 2687 flow [2023-08-30 10:23:34,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=1427, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2687, PETRI_PLACES=179, PETRI_TRANSITIONS=195} [2023-08-30 10:23:34,234 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 92 predicate places. [2023-08-30 10:23:34,234 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 195 transitions, 2687 flow [2023-08-30 10:23:34,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 186.45454545454547) internal successors, (4102), 22 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:34,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:34,234 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:34,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 10:23:34,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:34,440 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:34,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:34,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1281721787, now seen corresponding path program 1 times [2023-08-30 10:23:34,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:34,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382808952] [2023-08-30 10:23:34,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:34,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:23:34,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:34,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382808952] [2023-08-30 10:23:34,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382808952] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:23:34,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132572850] [2023-08-30 10:23:34,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:34,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:34,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:23:34,679 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:23:34,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 10:23:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:34,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 10:23:34,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:23:34,826 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 7 treesize of output 6 [2023-08-30 10:23:34,881 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:23:34,881 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 11 treesize of output 11 [2023-08-30 10:23:34,896 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 13 treesize of output 15 [2023-08-30 10:23:34,915 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 13 treesize of output 15 [2023-08-30 10:23:34,932 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 16 treesize of output 12 [2023-08-30 10:23:34,961 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:23:34,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 11 [2023-08-30 10:23:34,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-30 10:23:35,032 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:23:35,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:23:35,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2023-08-30 10:23:35,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 8 [2023-08-30 10:23:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:23:35,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132572850] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:23:35,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:23:35,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 10:23:35,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713650142] [2023-08-30 10:23:35,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:23:35,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 10:23:35,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:35,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 10:23:35,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=249, Unknown=1, NotChecked=0, Total=342 [2023-08-30 10:23:37,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 576 [2023-08-30 10:23:37,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 195 transitions, 2687 flow. Second operand has 19 states, 19 states have (on average 187.73684210526315) internal successors, (3567), 19 states have internal predecessors, (3567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:37,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:37,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 576 [2023-08-30 10:23:37,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:37,741 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_~#a~0.offset| (* |c_t_funThread2of2ForFork0_~i~0#1| 28))) (.cse0 (select |c_#memory_int| |c_~#a~0.base|))) (and (forall ((v_ArrVal_1445 Int)) (< (select (store .cse0 .cse1 v_ArrVal_1445) (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|)) 2147483647)) (forall ((|v_t_funThread1of2ForFork0_~i~0#1_99| Int) (v_ArrVal_1445 Int)) (let ((.cse2 (* |v_t_funThread1of2ForFork0_~i~0#1_99| 28))) (or (not (= (select (select |c_#pthreadsMutex| |c_~#a~0.base|) (+ |c_~#a~0.offset| .cse2 (- 24))) 0)) (< (select (store .cse0 .cse1 v_ArrVal_1445) (+ |c_~#a~0.offset| .cse2)) 2147483647)))) (forall ((|v_t_funThread1of2ForFork0_~i~0#1_99| Int) (|v_t_funThread2of2ForFork0_~i~0#1_97| Int) (|~#a~0.offset| Int) (v_ArrVal_1445 Int)) (or (= |v_t_funThread2of2ForFork0_~i~0#1_97| |v_t_funThread1of2ForFork0_~i~0#1_99|) (< (select (store .cse0 (+ (* |v_t_funThread2of2ForFork0_~i~0#1_97| 28) |~#a~0.offset|) v_ArrVal_1445) (+ (* |v_t_funThread1of2ForFork0_~i~0#1_99| 28) |~#a~0.offset|)) 2147483647))) (forall ((|v_ULTIMATE.start_main_~#t_ids~0#1.base_142| Int)) (or (forall ((|v_t_funThread1of2ForFork0_~i~0#1_99| Int) (|v_t_funThread2of2ForFork0_~i~0#1_97| Int) (v_ArrVal_1441 (Array Int Int)) (|~#a~0.offset| Int) (v_ArrVal_1445 Int)) (or (< (select (store (select (store |c_#memory_int| |v_ULTIMATE.start_main_~#t_ids~0#1.base_142| v_ArrVal_1441) |c_~#a~0.base|) (+ (* |v_t_funThread2of2ForFork0_~i~0#1_97| 28) |~#a~0.offset|) v_ArrVal_1445) (+ (* |v_t_funThread1of2ForFork0_~i~0#1_99| 28) |~#a~0.offset|)) 2147483647) (= |v_t_funThread2of2ForFork0_~i~0#1_97| |v_t_funThread1of2ForFork0_~i~0#1_99|))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~#t_ids~0#1.base_142|) 0)))) (forall ((|v_t_funThread1of2ForFork0_~i~0#1_99| Int) (|v_t_funThread2of2ForFork0_~i~0#1_97| Int) (v_ArrVal_1441 (Array Int Int)) (|~#a~0.offset| Int) (v_ArrVal_1445 Int)) (or (= |v_t_funThread2of2ForFork0_~i~0#1_97| |v_t_funThread1of2ForFork0_~i~0#1_99|) (< (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1441) |c_~#a~0.base|) (+ (* |v_t_funThread2of2ForFork0_~i~0#1_97| 28) |~#a~0.offset|) v_ArrVal_1445) (+ (* |v_t_funThread1of2ForFork0_~i~0#1_99| 28) |~#a~0.offset|)) 2147483647))))) is different from false [2023-08-30 10:23:39,413 INFO L130 PetriNetUnfolder]: 1304/2971 cut-off events. [2023-08-30 10:23:39,414 INFO L131 PetriNetUnfolder]: For 29901/29915 co-relation queries the response was YES. [2023-08-30 10:23:39,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16862 conditions, 2971 events. 1304/2971 cut-off events. For 29901/29915 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 21974 event pairs, 261 based on Foata normal form. 37/3007 useless extension candidates. Maximal degree in co-relation 16784. Up to 1811 conditions per place. [2023-08-30 10:23:39,444 INFO L137 encePairwiseOnDemand]: 560/576 looper letters, 249 selfloop transitions, 89 changer transitions 0/344 dead transitions. [2023-08-30 10:23:39,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 344 transitions, 4810 flow [2023-08-30 10:23:39,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 10:23:39,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 10:23:39,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4257 transitions. [2023-08-30 10:23:39,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2023-08-30 10:23:39,449 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4257 transitions. [2023-08-30 10:23:39,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4257 transitions. [2023-08-30 10:23:39,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:39,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4257 transitions. [2023-08-30 10:23:39,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 193.5) internal successors, (4257), 22 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:39,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 576.0) internal successors, (13248), 23 states have internal predecessors, (13248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:39,462 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 576.0) internal successors, (13248), 23 states have internal predecessors, (13248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:39,462 INFO L175 Difference]: Start difference. First operand has 179 places, 195 transitions, 2687 flow. Second operand 22 states and 4257 transitions. [2023-08-30 10:23:39,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 344 transitions, 4810 flow [2023-08-30 10:23:39,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 344 transitions, 4465 flow, removed 132 selfloop flow, removed 6 redundant places. [2023-08-30 10:23:39,591 INFO L231 Difference]: Finished difference. Result has 206 places, 257 transitions, 3627 flow [2023-08-30 10:23:39,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3627, PETRI_PLACES=206, PETRI_TRANSITIONS=257} [2023-08-30 10:23:39,591 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 119 predicate places. [2023-08-30 10:23:39,591 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 257 transitions, 3627 flow [2023-08-30 10:23:39,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 187.73684210526315) internal successors, (3567), 19 states have internal predecessors, (3567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:39,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:39,592 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:39,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 10:23:39,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:39,798 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:39,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:39,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1543398190, now seen corresponding path program 2 times [2023-08-30 10:23:39,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:39,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081736378] [2023-08-30 10:23:39,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:39,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:40,026 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:23:40,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:40,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081736378] [2023-08-30 10:23:40,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081736378] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:23:40,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127388445] [2023-08-30 10:23:40,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:23:40,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:40,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:23:40,033 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:23:40,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-30 10:23:40,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:23:40,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:23:40,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-30 10:23:40,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:23:40,173 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 7 treesize of output 6 [2023-08-30 10:23:40,249 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:23:40,249 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 11 treesize of output 11 [2023-08-30 10:23:40,266 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 13 treesize of output 15 [2023-08-30 10:23:40,292 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 13 treesize of output 15 [2023-08-30 10:23:40,317 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 16 treesize of output 12 [2023-08-30 10:23:40,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:23:40,353 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 19 treesize of output 21 [2023-08-30 10:23:40,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-30 10:23:40,416 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:23:40,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 11 [2023-08-30 10:23:40,494 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 20 treesize of output 22 [2023-08-30 10:23:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:23:40,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:23:40,533 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1536 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1536) |c_~#a~0.base|) (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|)) 2147483647)) is different from false [2023-08-30 10:23:40,651 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:23:40,651 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 29 treesize of output 30 [2023-08-30 10:23:40,662 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:23:40,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 48 treesize of output 38 [2023-08-30 10:23:40,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-08-30 10:23:44,194 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 3 times theorem prover too weak. 56 trivial. 2 not checked. [2023-08-30 10:23:44,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127388445] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:23:44,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:23:44,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8] total 21 [2023-08-30 10:23:44,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083177028] [2023-08-30 10:23:44,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:23:44,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-30 10:23:44,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:44,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-30 10:23:44,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=342, Unknown=11, NotChecked=40, Total=506 [2023-08-30 10:23:44,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 576 [2023-08-30 10:23:44,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 257 transitions, 3627 flow. Second operand has 23 states, 23 states have (on average 186.43478260869566) internal successors, (4288), 23 states have internal predecessors, (4288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:44,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:44,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 576 [2023-08-30 10:23:44,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:46,252 INFO L130 PetriNetUnfolder]: 1360/3091 cut-off events. [2023-08-30 10:23:46,252 INFO L131 PetriNetUnfolder]: For 31287/31303 co-relation queries the response was YES. [2023-08-30 10:23:46,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17981 conditions, 3091 events. 1360/3091 cut-off events. For 31287/31303 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 23063 event pairs, 253 based on Foata normal form. 4/3092 useless extension candidates. Maximal degree in co-relation 17891. Up to 1807 conditions per place. [2023-08-30 10:23:46,280 INFO L137 encePairwiseOnDemand]: 559/576 looper letters, 225 selfloop transitions, 98 changer transitions 0/329 dead transitions. [2023-08-30 10:23:46,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 329 transitions, 5004 flow [2023-08-30 10:23:46,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:23:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:23:46,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2694 transitions. [2023-08-30 10:23:46,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33407738095238093 [2023-08-30 10:23:46,283 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2694 transitions. [2023-08-30 10:23:46,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2694 transitions. [2023-08-30 10:23:46,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:46,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2694 transitions. [2023-08-30 10:23:46,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 192.42857142857142) internal successors, (2694), 14 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:46,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 576.0) internal successors, (8640), 15 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:46,290 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 576.0) internal successors, (8640), 15 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:46,290 INFO L175 Difference]: Start difference. First operand has 206 places, 257 transitions, 3627 flow. Second operand 14 states and 2694 transitions. [2023-08-30 10:23:46,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 329 transitions, 5004 flow [2023-08-30 10:23:46,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 329 transitions, 4884 flow, removed 56 selfloop flow, removed 2 redundant places. [2023-08-30 10:23:46,439 INFO L231 Difference]: Finished difference. Result has 223 places, 283 transitions, 4259 flow [2023-08-30 10:23:46,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=3531, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4259, PETRI_PLACES=223, PETRI_TRANSITIONS=283} [2023-08-30 10:23:46,440 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 136 predicate places. [2023-08-30 10:23:46,440 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 283 transitions, 4259 flow [2023-08-30 10:23:46,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 186.43478260869566) internal successors, (4288), 23 states have internal predecessors, (4288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:46,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:46,441 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:46,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-30 10:23:46,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-30 10:23:46,648 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:46,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:46,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1740135061, now seen corresponding path program 1 times [2023-08-30 10:23:46,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:46,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384024305] [2023-08-30 10:23:46,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:46,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:46,906 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:23:46,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:46,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384024305] [2023-08-30 10:23:46,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384024305] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:23:46,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438046557] [2023-08-30 10:23:46,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:46,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:46,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:23:46,908 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:23:46,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-30 10:23:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:47,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 10:23:47,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:23:47,062 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 7 treesize of output 6 [2023-08-30 10:23:47,106 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:23:47,106 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 11 treesize of output 11 [2023-08-30 10:23:47,122 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 13 treesize of output 15 [2023-08-30 10:23:47,139 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 13 treesize of output 15 [2023-08-30 10:23:47,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-08-30 10:23:47,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2023-08-30 10:23:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:23:47,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:23:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:23:47,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438046557] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:23:47,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:23:47,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 20 [2023-08-30 10:23:47,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28547739] [2023-08-30 10:23:47,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:23:47,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 10:23:47,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:47,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 10:23:47,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=350, Unknown=3, NotChecked=0, Total=462 [2023-08-30 10:23:47,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 576 [2023-08-30 10:23:47,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 283 transitions, 4259 flow. Second operand has 22 states, 22 states have (on average 203.9090909090909) internal successors, (4486), 22 states have internal predecessors, (4486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:47,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:47,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 576 [2023-08-30 10:23:47,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:49,007 INFO L130 PetriNetUnfolder]: 1426/3277 cut-off events. [2023-08-30 10:23:49,007 INFO L131 PetriNetUnfolder]: For 40119/40125 co-relation queries the response was YES. [2023-08-30 10:23:49,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20292 conditions, 3277 events. 1426/3277 cut-off events. For 40119/40125 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 25149 event pairs, 314 based on Foata normal form. 51/3324 useless extension candidates. Maximal degree in co-relation 20196. Up to 1663 conditions per place. [2023-08-30 10:23:49,032 INFO L137 encePairwiseOnDemand]: 564/576 looper letters, 292 selfloop transitions, 83 changer transitions 0/381 dead transitions. [2023-08-30 10:23:49,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 381 transitions, 6007 flow [2023-08-30 10:23:49,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 10:23:49,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 10:23:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3351 transitions. [2023-08-30 10:23:49,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3636067708333333 [2023-08-30 10:23:49,036 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3351 transitions. [2023-08-30 10:23:49,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3351 transitions. [2023-08-30 10:23:49,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:49,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3351 transitions. [2023-08-30 10:23:49,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 209.4375) internal successors, (3351), 16 states have internal predecessors, (3351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:49,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 576.0) internal successors, (9792), 17 states have internal predecessors, (9792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:49,050 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 576.0) internal successors, (9792), 17 states have internal predecessors, (9792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:49,050 INFO L175 Difference]: Start difference. First operand has 223 places, 283 transitions, 4259 flow. Second operand 16 states and 3351 transitions. [2023-08-30 10:23:49,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 381 transitions, 6007 flow [2023-08-30 10:23:49,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 381 transitions, 5910 flow, removed 35 selfloop flow, removed 4 redundant places. [2023-08-30 10:23:49,189 INFO L231 Difference]: Finished difference. Result has 239 places, 305 transitions, 4709 flow [2023-08-30 10:23:49,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=4126, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4709, PETRI_PLACES=239, PETRI_TRANSITIONS=305} [2023-08-30 10:23:49,200 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 152 predicate places. [2023-08-30 10:23:49,200 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 305 transitions, 4709 flow [2023-08-30 10:23:49,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 203.9090909090909) internal successors, (4486), 22 states have internal predecessors, (4486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:49,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:49,201 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:49,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-30 10:23:49,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-30 10:23:49,406 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:49,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:49,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1379279080, now seen corresponding path program 1 times [2023-08-30 10:23:49,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:49,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779147810] [2023-08-30 10:23:49,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:49,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:49,661 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:23:49,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:49,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779147810] [2023-08-30 10:23:49,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779147810] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:23:49,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535739029] [2023-08-30 10:23:49,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:49,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:49,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:23:49,663 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:23:49,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-30 10:23:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:49,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 10:23:49,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:23:49,823 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 7 treesize of output 6 [2023-08-30 10:23:49,866 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:23:49,866 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 11 treesize of output 11 [2023-08-30 10:23:49,884 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 13 treesize of output 15 [2023-08-30 10:23:49,900 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 13 treesize of output 15 [2023-08-30 10:23:49,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-08-30 10:23:49,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2023-08-30 10:23:50,001 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:23:50,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:23:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:23:50,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535739029] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:23:50,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:23:50,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 20 [2023-08-30 10:23:50,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168927154] [2023-08-30 10:23:50,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:23:50,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 10:23:50,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:50,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 10:23:50,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=350, Unknown=4, NotChecked=0, Total=462 [2023-08-30 10:23:51,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 576 [2023-08-30 10:23:51,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 305 transitions, 4709 flow. Second operand has 22 states, 22 states have (on average 203.9090909090909) internal successors, (4486), 22 states have internal predecessors, (4486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:51,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:51,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 576 [2023-08-30 10:23:51,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:53,554 INFO L130 PetriNetUnfolder]: 1436/3367 cut-off events. [2023-08-30 10:23:53,554 INFO L131 PetriNetUnfolder]: For 43849/43865 co-relation queries the response was YES. [2023-08-30 10:23:53,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21140 conditions, 3367 events. 1436/3367 cut-off events. For 43849/43865 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 26329 event pairs, 402 based on Foata normal form. 63/3426 useless extension candidates. Maximal degree in co-relation 21038. Up to 1824 conditions per place. [2023-08-30 10:23:53,587 INFO L137 encePairwiseOnDemand]: 562/576 looper letters, 282 selfloop transitions, 104 changer transitions 0/392 dead transitions. [2023-08-30 10:23:53,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 392 transitions, 6478 flow [2023-08-30 10:23:53,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 10:23:53,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 10:23:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4149 transitions. [2023-08-30 10:23:53,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36015625 [2023-08-30 10:23:53,592 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4149 transitions. [2023-08-30 10:23:53,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4149 transitions. [2023-08-30 10:23:53,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:53,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4149 transitions. [2023-08-30 10:23:53,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 207.45) internal successors, (4149), 20 states have internal predecessors, (4149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:53,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 576.0) internal successors, (12096), 21 states have internal predecessors, (12096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:53,603 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 576.0) internal successors, (12096), 21 states have internal predecessors, (12096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:53,603 INFO L175 Difference]: Start difference. First operand has 239 places, 305 transitions, 4709 flow. Second operand 20 states and 4149 transitions. [2023-08-30 10:23:53,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 392 transitions, 6478 flow [2023-08-30 10:23:53,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 392 transitions, 6160 flow, removed 77 selfloop flow, removed 13 redundant places. [2023-08-30 10:23:53,789 INFO L231 Difference]: Finished difference. Result has 251 places, 328 transitions, 5143 flow [2023-08-30 10:23:53,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=4307, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5143, PETRI_PLACES=251, PETRI_TRANSITIONS=328} [2023-08-30 10:23:53,790 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 164 predicate places. [2023-08-30 10:23:53,790 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 328 transitions, 5143 flow [2023-08-30 10:23:53,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 203.9090909090909) internal successors, (4486), 22 states have internal predecessors, (4486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:53,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:53,791 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:53,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-30 10:23:53,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-30 10:23:53,997 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:53,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:53,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1828985492, now seen corresponding path program 1 times [2023-08-30 10:23:53,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:53,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089325395] [2023-08-30 10:23:53,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:53,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:54,199 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 10:23:54,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:54,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089325395] [2023-08-30 10:23:54,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089325395] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:23:54,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:23:54,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:23:54,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129975719] [2023-08-30 10:23:54,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:23:54,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:23:54,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:54,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:23:54,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:23:54,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 576 [2023-08-30 10:23:54,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 328 transitions, 5143 flow. Second operand has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:54,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:54,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 576 [2023-08-30 10:23:54,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:23:55,341 INFO L130 PetriNetUnfolder]: 1492/3471 cut-off events. [2023-08-30 10:23:55,341 INFO L131 PetriNetUnfolder]: For 41423/41449 co-relation queries the response was YES. [2023-08-30 10:23:55,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21762 conditions, 3471 events. 1492/3471 cut-off events. For 41423/41449 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 27268 event pairs, 612 based on Foata normal form. 12/3479 useless extension candidates. Maximal degree in co-relation 21658. Up to 2300 conditions per place. [2023-08-30 10:23:55,384 INFO L137 encePairwiseOnDemand]: 566/576 looper letters, 267 selfloop transitions, 94 changer transitions 0/367 dead transitions. [2023-08-30 10:23:55,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 367 transitions, 6278 flow [2023-08-30 10:23:55,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:23:55,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:23:55,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1501 transitions. [2023-08-30 10:23:55,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43431712962962965 [2023-08-30 10:23:55,386 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1501 transitions. [2023-08-30 10:23:55,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1501 transitions. [2023-08-30 10:23:55,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:23:55,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1501 transitions. [2023-08-30 10:23:55,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.16666666666666) internal successors, (1501), 6 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:55,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 576.0) internal successors, (4032), 7 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:55,391 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 576.0) internal successors, (4032), 7 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:55,391 INFO L175 Difference]: Start difference. First operand has 251 places, 328 transitions, 5143 flow. Second operand 6 states and 1501 transitions. [2023-08-30 10:23:55,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 367 transitions, 6278 flow [2023-08-30 10:23:55,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 367 transitions, 6077 flow, removed 27 selfloop flow, removed 7 redundant places. [2023-08-30 10:23:55,581 INFO L231 Difference]: Finished difference. Result has 252 places, 338 transitions, 5441 flow [2023-08-30 10:23:55,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=4947, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5441, PETRI_PLACES=252, PETRI_TRANSITIONS=338} [2023-08-30 10:23:55,581 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 165 predicate places. [2023-08-30 10:23:55,581 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 338 transitions, 5441 flow [2023-08-30 10:23:55,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:55,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:55,582 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:55,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-30 10:23:55,582 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:23:55,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:55,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1723970995, now seen corresponding path program 1 times [2023-08-30 10:23:55,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:55,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117176248] [2023-08-30 10:23:55,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:55,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:23:55,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:55,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117176248] [2023-08-30 10:23:55,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117176248] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:23:55,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167180863] [2023-08-30 10:23:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:55,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:23:55,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:23:55,862 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:23:55,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-30 10:23:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:56,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-30 10:23:56,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:23:56,019 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 7 treesize of output 6 [2023-08-30 10:23:56,094 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:23:56,094 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 11 treesize of output 11 [2023-08-30 10:23:56,111 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 13 treesize of output 15 [2023-08-30 10:23:56,138 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 16 treesize of output 12 [2023-08-30 10:23:56,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:23:56,170 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 19 treesize of output 21 [2023-08-30 10:23:56,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2023-08-30 10:23:56,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:23:56,240 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 19 treesize of output 21 [2023-08-30 10:23:56,266 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 20 treesize of output 22 [2023-08-30 10:23:56,305 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:23:56,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 11 [2023-08-30 10:23:56,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2023-08-30 10:23:56,398 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:23:56,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:23:58,523 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1874 (Array Int Int)) (|v_t_funThread2of2ForFork0_~i~0#1_105| Int) (v_ArrVal_1873 (Array Int Int)) (v_ArrVal_1872 Int) (v_ArrVal_1875 Int)) (let ((.cse0 (* |v_t_funThread2of2ForFork0_~i~0#1_105| 28)) (.cse1 (select |c_#memory_int| |c_~#a~0.base|)) (.cse2 (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|))) (or (not (= (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_1873) |c_~#a~0.base|) (+ |c_~#a~0.offset| .cse0 (- 24))) 0)) (< 0 (+ (select (store (select (store (store |c_#memory_int| |c_~#a~0.base| (store .cse1 .cse2 v_ArrVal_1872)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1874) |c_~#a~0.base|) (+ |c_~#a~0.offset| .cse0) v_ArrVal_1875) .cse2) 2147483648)) (< v_ArrVal_1872 (+ (select .cse1 .cse2) 1))))) is different from false [2023-08-30 10:23:58,572 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:23:58,572 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 29 treesize of output 30 [2023-08-30 10:23:58,579 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:23:58,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 48 treesize of output 38 [2023-08-30 10:23:58,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-08-30 10:24:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:24:05,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167180863] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:24:05,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:24:05,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 10] total 26 [2023-08-30 10:24:05,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781819115] [2023-08-30 10:24:05,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:24:05,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 10:24:05,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:05,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 10:24:05,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=577, Unknown=11, NotChecked=50, Total=756 [2023-08-30 10:24:05,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 576 [2023-08-30 10:24:05,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 338 transitions, 5441 flow. Second operand has 28 states, 28 states have (on average 180.35714285714286) internal successors, (5050), 28 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:05,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:05,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 576 [2023-08-30 10:24:05,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:09,235 INFO L130 PetriNetUnfolder]: 1682/4063 cut-off events. [2023-08-30 10:24:09,235 INFO L131 PetriNetUnfolder]: For 53791/53797 co-relation queries the response was YES. [2023-08-30 10:24:09,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26030 conditions, 4063 events. 1682/4063 cut-off events. For 53791/53797 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 34016 event pairs, 323 based on Foata normal form. 67/4130 useless extension candidates. Maximal degree in co-relation 25924. Up to 1988 conditions per place. [2023-08-30 10:24:09,269 INFO L137 encePairwiseOnDemand]: 555/576 looper letters, 381 selfloop transitions, 120 changer transitions 54/561 dead transitions. [2023-08-30 10:24:09,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 561 transitions, 9546 flow [2023-08-30 10:24:09,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-30 10:24:09,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-30 10:24:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 5186 transitions. [2023-08-30 10:24:09,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32155257936507936 [2023-08-30 10:24:09,300 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 5186 transitions. [2023-08-30 10:24:09,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 5186 transitions. [2023-08-30 10:24:09,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:09,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 5186 transitions. [2023-08-30 10:24:09,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 185.21428571428572) internal successors, (5186), 28 states have internal predecessors, (5186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:09,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 576.0) internal successors, (16704), 29 states have internal predecessors, (16704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:09,311 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 576.0) internal successors, (16704), 29 states have internal predecessors, (16704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:09,311 INFO L175 Difference]: Start difference. First operand has 252 places, 338 transitions, 5441 flow. Second operand 28 states and 5186 transitions. [2023-08-30 10:24:09,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 561 transitions, 9546 flow [2023-08-30 10:24:09,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 561 transitions, 9447 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 10:24:09,532 INFO L231 Difference]: Finished difference. Result has 289 places, 382 transitions, 6478 flow [2023-08-30 10:24:09,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=5372, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6478, PETRI_PLACES=289, PETRI_TRANSITIONS=382} [2023-08-30 10:24:09,533 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 202 predicate places. [2023-08-30 10:24:09,533 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 382 transitions, 6478 flow [2023-08-30 10:24:09,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 180.35714285714286) internal successors, (5050), 28 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:09,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:09,534 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:09,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-30 10:24:09,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:09,736 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:24:09,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:09,737 INFO L85 PathProgramCache]: Analyzing trace with hash -48607405, now seen corresponding path program 1 times [2023-08-30 10:24:09,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:09,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647784787] [2023-08-30 10:24:09,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:09,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:24:09,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:09,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647784787] [2023-08-30 10:24:09,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647784787] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:24:09,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875501770] [2023-08-30 10:24:09,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:09,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:09,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:24:09,980 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:24:10,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-30 10:24:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:10,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-30 10:24:10,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:24:10,139 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 7 treesize of output 6 [2023-08-30 10:24:10,210 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:24:10,210 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 11 treesize of output 11 [2023-08-30 10:24:10,229 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 13 treesize of output 15 [2023-08-30 10:24:10,255 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 13 treesize of output 15 [2023-08-30 10:24:10,278 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 16 treesize of output 12 [2023-08-30 10:24:10,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:10,314 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 19 treesize of output 21 [2023-08-30 10:24:10,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-30 10:24:10,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:10,356 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 19 treesize of output 21 [2023-08-30 10:24:10,385 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:24:10,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 11 [2023-08-30 10:24:10,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-08-30 10:24:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:24:10,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:24:10,640 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:24:10,640 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 29 treesize of output 30 [2023-08-30 10:24:10,647 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:24:10,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 48 treesize of output 38 [2023-08-30 10:24:10,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-08-30 10:24:13,700 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:24:13,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875501770] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:24:13,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:24:13,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2023-08-30 10:24:13,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416981931] [2023-08-30 10:24:13,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:24:13,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 10:24:13,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:13,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 10:24:13,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=588, Unknown=3, NotChecked=0, Total=756 [2023-08-30 10:24:16,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 10:24:18,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 576 [2023-08-30 10:24:18,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 382 transitions, 6478 flow. Second operand has 28 states, 28 states have (on average 209.35714285714286) internal successors, (5862), 28 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:18,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:18,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 576 [2023-08-30 10:24:18,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:24,884 INFO L130 PetriNetUnfolder]: 1694/4186 cut-off events. [2023-08-30 10:24:24,884 INFO L131 PetriNetUnfolder]: For 55983/55983 co-relation queries the response was YES. [2023-08-30 10:24:24,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27133 conditions, 4186 events. 1694/4186 cut-off events. For 55983/55983 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 35878 event pairs, 236 based on Foata normal form. 21/4207 useless extension candidates. Maximal degree in co-relation 27014. Up to 1800 conditions per place. [2023-08-30 10:24:24,926 INFO L137 encePairwiseOnDemand]: 557/576 looper letters, 325 selfloop transitions, 319 changer transitions 10/660 dead transitions. [2023-08-30 10:24:24,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 660 transitions, 11132 flow [2023-08-30 10:24:24,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-08-30 10:24:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-08-30 10:24:24,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 12317 transitions. [2023-08-30 10:24:24,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36868414750957856 [2023-08-30 10:24:24,934 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 12317 transitions. [2023-08-30 10:24:24,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 12317 transitions. [2023-08-30 10:24:24,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:24,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 12317 transitions. [2023-08-30 10:24:24,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 212.36206896551724) internal successors, (12317), 58 states have internal predecessors, (12317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:24,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 576.0) internal successors, (33984), 59 states have internal predecessors, (33984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:24,964 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 576.0) internal successors, (33984), 59 states have internal predecessors, (33984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:24,964 INFO L175 Difference]: Start difference. First operand has 289 places, 382 transitions, 6478 flow. Second operand 58 states and 12317 transitions. [2023-08-30 10:24:24,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 660 transitions, 11132 flow [2023-08-30 10:24:25,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 660 transitions, 11021 flow, removed 40 selfloop flow, removed 8 redundant places. [2023-08-30 10:24:25,258 INFO L231 Difference]: Finished difference. Result has 350 places, 493 transitions, 9021 flow [2023-08-30 10:24:25,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=6350, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=9021, PETRI_PLACES=350, PETRI_TRANSITIONS=493} [2023-08-30 10:24:25,259 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 263 predicate places. [2023-08-30 10:24:25,259 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 493 transitions, 9021 flow [2023-08-30 10:24:25,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 209.35714285714286) internal successors, (5862), 28 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:25,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:25,260 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:25,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-30 10:24:25,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:25,466 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:24:25,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:25,466 INFO L85 PathProgramCache]: Analyzing trace with hash -754949446, now seen corresponding path program 1 times [2023-08-30 10:24:25,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:25,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595934347] [2023-08-30 10:24:25,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:25,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 10:24:25,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:25,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595934347] [2023-08-30 10:24:25,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595934347] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:25,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:25,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:24:25,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874315448] [2023-08-30 10:24:25,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:25,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:24:25,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:25,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:24:25,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:24:25,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 576 [2023-08-30 10:24:25,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 493 transitions, 9021 flow. Second operand has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:25,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:25,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 576 [2023-08-30 10:24:25,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:26,809 INFO L130 PetriNetUnfolder]: 1684/4149 cut-off events. [2023-08-30 10:24:26,810 INFO L131 PetriNetUnfolder]: For 64283/64283 co-relation queries the response was YES. [2023-08-30 10:24:26,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28602 conditions, 4149 events. 1684/4149 cut-off events. For 64283/64283 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 35490 event pairs, 519 based on Foata normal form. 6/4151 useless extension candidates. Maximal degree in co-relation 28470. Up to 2051 conditions per place. [2023-08-30 10:24:26,858 INFO L137 encePairwiseOnDemand]: 562/576 looper letters, 335 selfloop transitions, 202 changer transitions 4/547 dead transitions. [2023-08-30 10:24:26,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 547 transitions, 10690 flow [2023-08-30 10:24:26,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:24:26,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:24:26,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1754 transitions. [2023-08-30 10:24:26,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4350198412698413 [2023-08-30 10:24:26,860 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1754 transitions. [2023-08-30 10:24:26,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1754 transitions. [2023-08-30 10:24:26,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:26,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1754 transitions. [2023-08-30 10:24:26,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 250.57142857142858) internal successors, (1754), 7 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:26,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 576.0) internal successors, (4608), 8 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:26,863 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 576.0) internal successors, (4608), 8 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:26,863 INFO L175 Difference]: Start difference. First operand has 350 places, 493 transitions, 9021 flow. Second operand 7 states and 1754 transitions. [2023-08-30 10:24:26,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 547 transitions, 10690 flow [2023-08-30 10:24:27,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 547 transitions, 9948 flow, removed 238 selfloop flow, removed 14 redundant places. [2023-08-30 10:24:27,229 INFO L231 Difference]: Finished difference. Result has 344 places, 501 transitions, 8965 flow [2023-08-30 10:24:27,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=8263, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8965, PETRI_PLACES=344, PETRI_TRANSITIONS=501} [2023-08-30 10:24:27,230 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 257 predicate places. [2023-08-30 10:24:27,230 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 501 transitions, 8965 flow [2023-08-30 10:24:27,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:27,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:27,230 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:27,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-30 10:24:27,231 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:24:27,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:27,231 INFO L85 PathProgramCache]: Analyzing trace with hash 841117847, now seen corresponding path program 2 times [2023-08-30 10:24:27,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:27,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845604045] [2023-08-30 10:24:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:27,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:27,448 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:24:27,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:27,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845604045] [2023-08-30 10:24:27,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845604045] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:24:27,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318757811] [2023-08-30 10:24:27,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:24:27,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:27,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:24:27,450 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:24:27,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-30 10:24:27,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:24:27,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:24:27,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 10:24:27,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:24:27,621 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 7 treesize of output 6 [2023-08-30 10:24:27,664 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:24:27,664 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 11 treesize of output 11 [2023-08-30 10:24:27,679 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 13 treesize of output 15 [2023-08-30 10:24:27,702 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 13 treesize of output 15 [2023-08-30 10:24:27,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2023-08-30 10:24:27,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-08-30 10:24:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:24:27,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:24:30,692 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2115 (Array Int Int)) (|~#a~0.offset| Int) (|t_funThread2of2ForFork0_~i~0#1| Int) (v_ArrVal_2116 Int) (|t_funThread1of2ForFork0_~i~0#1| Int) (v_ArrVal_2119 Int)) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_2115) |c_~#a~0.base|)) (.cse1 (+ (* 28 |t_funThread2of2ForFork0_~i~0#1|) |~#a~0.offset|))) (let ((.cse2 (store .cse0 .cse1 v_ArrVal_2116)) (.cse3 (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|))) (or (< v_ArrVal_2116 (+ (select .cse0 .cse1) 1)) (< (+ v_ArrVal_2116 2147483648) 0) (< v_ArrVal_2119 (+ (select .cse2 .cse3) 1)) (< 0 (+ (select (store .cse2 .cse3 v_ArrVal_2119) .cse1) 2147483648)))))) is different from false [2023-08-30 10:24:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-30 10:24:30,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318757811] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:24:30,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:24:30,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-30 10:24:30,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412304572] [2023-08-30 10:24:30,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:24:30,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 10:24:30,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:30,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 10:24:30,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=321, Unknown=2, NotChecked=38, Total=462 [2023-08-30 10:24:31,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 576 [2023-08-30 10:24:31,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 501 transitions, 8965 flow. Second operand has 22 states, 22 states have (on average 203.9090909090909) internal successors, (4486), 22 states have internal predecessors, (4486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:31,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:31,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 576 [2023-08-30 10:24:31,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:33,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:35,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:38,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:40,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:42,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:44,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:46,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:48,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:50,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:51,050 INFO L130 PetriNetUnfolder]: 1738/4262 cut-off events. [2023-08-30 10:24:51,051 INFO L131 PetriNetUnfolder]: For 60643/60679 co-relation queries the response was YES. [2023-08-30 10:24:51,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29226 conditions, 4262 events. 1738/4262 cut-off events. For 60643/60679 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 36508 event pairs, 403 based on Foata normal form. 9/4267 useless extension candidates. Maximal degree in co-relation 29093. Up to 2856 conditions per place. [2023-08-30 10:24:51,117 INFO L137 encePairwiseOnDemand]: 559/576 looper letters, 413 selfloop transitions, 151 changer transitions 1/571 dead transitions. [2023-08-30 10:24:51,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 571 transitions, 10998 flow [2023-08-30 10:24:51,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 10:24:51,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 10:24:51,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3338 transitions. [2023-08-30 10:24:51,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3621961805555556 [2023-08-30 10:24:51,121 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3338 transitions. [2023-08-30 10:24:51,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3338 transitions. [2023-08-30 10:24:51,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:51,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3338 transitions. [2023-08-30 10:24:51,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 208.625) internal successors, (3338), 16 states have internal predecessors, (3338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:51,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 576.0) internal successors, (9792), 17 states have internal predecessors, (9792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:51,131 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 576.0) internal successors, (9792), 17 states have internal predecessors, (9792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:51,131 INFO L175 Difference]: Start difference. First operand has 344 places, 501 transitions, 8965 flow. Second operand 16 states and 3338 transitions. [2023-08-30 10:24:51,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 571 transitions, 10998 flow [2023-08-30 10:24:51,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 571 transitions, 10680 flow, removed 25 selfloop flow, removed 5 redundant places. [2023-08-30 10:24:51,674 INFO L231 Difference]: Finished difference. Result has 360 places, 523 transitions, 9648 flow [2023-08-30 10:24:51,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=8585, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9648, PETRI_PLACES=360, PETRI_TRANSITIONS=523} [2023-08-30 10:24:51,675 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 273 predicate places. [2023-08-30 10:24:51,675 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 523 transitions, 9648 flow [2023-08-30 10:24:51,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 203.9090909090909) internal successors, (4486), 22 states have internal predecessors, (4486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:51,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:51,676 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:51,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-30 10:24:51,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-08-30 10:24:51,883 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:24:51,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:51,883 INFO L85 PathProgramCache]: Analyzing trace with hash -47204764, now seen corresponding path program 1 times [2023-08-30 10:24:51,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:51,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53268205] [2023-08-30 10:24:51,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:51,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:24:52,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:52,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53268205] [2023-08-30 10:24:52,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53268205] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:24:52,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718872053] [2023-08-30 10:24:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:52,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:52,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:24:52,214 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:24:52,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-30 10:24:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:52,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-30 10:24:52,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:24:52,416 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 7 treesize of output 6 [2023-08-30 10:24:52,471 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:24:52,471 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 11 treesize of output 11 [2023-08-30 10:24:52,491 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 13 treesize of output 15 [2023-08-30 10:24:52,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-08-30 10:24:52,615 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 40 treesize of output 40 [2023-08-30 10:24:52,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 40 [2023-08-30 10:24:52,668 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:24:52,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:24:52,712 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2214 (Array Int Int)) (|t_funThread2of2ForFork0_~i~0#1| Int)) (< (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_2214) |c_~#a~0.base|) (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|) (+ (- 1) |c_t_funThread1of2ForFork0_#t~post40#1|)) (+ |c_~#a~0.offset| (* 28 |t_funThread2of2ForFork0_~i~0#1|))) 2147483647)) is different from false [2023-08-30 10:25:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:25:05,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718872053] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:25:05,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:25:05,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 22 [2023-08-30 10:25:05,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513225627] [2023-08-30 10:25:05,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:25:05,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 10:25:05,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:05,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 10:25:05,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=384, Unknown=13, NotChecked=42, Total=552 [2023-08-30 10:25:05,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 576 [2023-08-30 10:25:05,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 523 transitions, 9648 flow. Second operand has 24 states, 24 states have (on average 203.66666666666666) internal successors, (4888), 24 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:05,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:05,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 576 [2023-08-30 10:25:05,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:07,024 INFO L130 PetriNetUnfolder]: 1729/4234 cut-off events. [2023-08-30 10:25:07,024 INFO L131 PetriNetUnfolder]: For 62658/62664 co-relation queries the response was YES. [2023-08-30 10:25:07,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29417 conditions, 4234 events. 1729/4234 cut-off events. For 62658/62664 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 36229 event pairs, 398 based on Foata normal form. 15/4245 useless extension candidates. Maximal degree in co-relation 29279. Up to 2013 conditions per place. [2023-08-30 10:25:07,071 INFO L137 encePairwiseOnDemand]: 564/576 looper letters, 435 selfloop transitions, 130 changer transitions 0/571 dead transitions. [2023-08-30 10:25:07,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 571 transitions, 11223 flow [2023-08-30 10:25:07,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:25:07,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:25:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2512 transitions. [2023-08-30 10:25:07,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36342592592592593 [2023-08-30 10:25:07,074 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2512 transitions. [2023-08-30 10:25:07,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2512 transitions. [2023-08-30 10:25:07,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:07,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2512 transitions. [2023-08-30 10:25:07,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 209.33333333333334) internal successors, (2512), 12 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:07,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 576.0) internal successors, (7488), 13 states have internal predecessors, (7488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:07,080 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 576.0) internal successors, (7488), 13 states have internal predecessors, (7488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:07,080 INFO L175 Difference]: Start difference. First operand has 360 places, 523 transitions, 9648 flow. Second operand 12 states and 2512 transitions. [2023-08-30 10:25:07,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 571 transitions, 11223 flow [2023-08-30 10:25:07,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 571 transitions, 11101 flow, removed 20 selfloop flow, removed 8 redundant places. [2023-08-30 10:25:07,496 INFO L231 Difference]: Finished difference. Result has 358 places, 519 transitions, 9744 flow [2023-08-30 10:25:07,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=9436, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9744, PETRI_PLACES=358, PETRI_TRANSITIONS=519} [2023-08-30 10:25:07,497 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 271 predicate places. [2023-08-30 10:25:07,497 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 519 transitions, 9744 flow [2023-08-30 10:25:07,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 203.66666666666666) internal successors, (4888), 24 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:07,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:07,498 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:07,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-08-30 10:25:07,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-08-30 10:25:07,702 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:25:07,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:07,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1723970994, now seen corresponding path program 2 times [2023-08-30 10:25:07,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:07,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278854557] [2023-08-30 10:25:07,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:07,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:25:08,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:08,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278854557] [2023-08-30 10:25:08,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278854557] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:25:08,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475341481] [2023-08-30 10:25:08,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:25:08,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:08,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:25:08,045 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:25:08,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-30 10:25:08,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:25:08,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:25:08,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-30 10:25:08,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:25:08,289 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:25:08,289 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 11 treesize of output 11 [2023-08-30 10:25:08,319 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 16 treesize of output 12 [2023-08-30 10:25:08,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:08,353 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 19 treesize of output 21 [2023-08-30 10:25:08,385 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 15 treesize of output 11 [2023-08-30 10:25:08,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:08,411 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 19 treesize of output 21 [2023-08-30 10:25:08,436 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 18 treesize of output 20 [2023-08-30 10:25:08,467 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:25:08,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 11 [2023-08-30 10:25:08,506 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-30 10:25:08,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 27 treesize of output 26 [2023-08-30 10:25:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:25:08,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:25:08,642 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_t_funThread2of2ForFork0_~i~0#1_113| Int) (v_ArrVal_2313 (Array Int Int)) (v_ArrVal_2312 (Array Int Int)) (v_ArrVal_2315 Int)) (let ((.cse0 (* |v_t_funThread2of2ForFork0_~i~0#1_113| 28))) (or (< (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_2313) |c_~#a~0.base|) (+ .cse0 |c_~#a~0.offset|) v_ArrVal_2315) (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|)) 2147483649) (not (= (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_2312) |c_~#a~0.base|) (+ .cse0 |c_~#a~0.offset| (- 24))) 0))))) is different from false [2023-08-30 10:25:08,650 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:25:08,650 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 33 treesize of output 34 [2023-08-30 10:25:08,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 53 [2023-08-30 10:25:08,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-08-30 10:25:08,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2023-08-30 10:25:08,783 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:25:08,783 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 29 treesize of output 30 [2023-08-30 10:25:08,788 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:25:08,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 48 treesize of output 38 [2023-08-30 10:25:08,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-08-30 10:25:08,802 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:25:08,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-30 10:25:08,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 48 treesize of output 30 [2023-08-30 10:25:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:25:08,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475341481] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:25:08,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:25:08,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2023-08-30 10:25:08,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089598230] [2023-08-30 10:25:08,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:25:08,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 10:25:08,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:08,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 10:25:08,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=590, Unknown=3, NotChecked=50, Total=756 [2023-08-30 10:25:09,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 576 [2023-08-30 10:25:09,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 519 transitions, 9744 flow. Second operand has 28 states, 28 states have (on average 180.35714285714286) internal successors, (5050), 28 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:09,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:09,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 576 [2023-08-30 10:25:09,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:11,847 INFO L130 PetriNetUnfolder]: 1836/4500 cut-off events. [2023-08-30 10:25:11,848 INFO L131 PetriNetUnfolder]: For 69251/69251 co-relation queries the response was YES. [2023-08-30 10:25:11,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31788 conditions, 4500 events. 1836/4500 cut-off events. For 69251/69251 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 38769 event pairs, 174 based on Foata normal form. 26/4526 useless extension candidates. Maximal degree in co-relation 31651. Up to 1108 conditions per place. [2023-08-30 10:25:11,892 INFO L137 encePairwiseOnDemand]: 559/576 looper letters, 468 selfloop transitions, 247 changer transitions 52/773 dead transitions. [2023-08-30 10:25:11,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 773 transitions, 15065 flow [2023-08-30 10:25:11,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-30 10:25:11,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-30 10:25:11,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5579 transitions. [2023-08-30 10:25:11,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32285879629629627 [2023-08-30 10:25:11,896 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5579 transitions. [2023-08-30 10:25:11,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5579 transitions. [2023-08-30 10:25:11,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:11,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5579 transitions. [2023-08-30 10:25:11,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 185.96666666666667) internal successors, (5579), 30 states have internal predecessors, (5579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:11,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 576.0) internal successors, (17856), 31 states have internal predecessors, (17856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:11,908 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 576.0) internal successors, (17856), 31 states have internal predecessors, (17856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:11,908 INFO L175 Difference]: Start difference. First operand has 358 places, 519 transitions, 9744 flow. Second operand 30 states and 5579 transitions. [2023-08-30 10:25:11,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 773 transitions, 15065 flow [2023-08-30 10:25:12,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 773 transitions, 14818 flow, removed 34 selfloop flow, removed 8 redundant places. [2023-08-30 10:25:12,411 INFO L231 Difference]: Finished difference. Result has 382 places, 552 transitions, 10893 flow [2023-08-30 10:25:12,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=9434, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10893, PETRI_PLACES=382, PETRI_TRANSITIONS=552} [2023-08-30 10:25:12,412 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 295 predicate places. [2023-08-30 10:25:12,412 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 552 transitions, 10893 flow [2023-08-30 10:25:12,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 180.35714285714286) internal successors, (5050), 28 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:12,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:12,413 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:12,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-30 10:25:12,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:12,620 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:25:12,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:12,620 INFO L85 PathProgramCache]: Analyzing trace with hash -294702558, now seen corresponding path program 2 times [2023-08-30 10:25:12,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:12,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341101152] [2023-08-30 10:25:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:12,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:12,943 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:25:12,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:12,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341101152] [2023-08-30 10:25:12,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341101152] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:25:12,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550630841] [2023-08-30 10:25:12,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:25:12,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:12,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:25:12,945 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:25:12,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-30 10:25:13,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:25:13,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:25:13,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-30 10:25:13,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:25:13,111 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 7 treesize of output 6 [2023-08-30 10:25:13,153 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:25:13,154 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 11 treesize of output 11 [2023-08-30 10:25:13,167 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 13 treesize of output 15 [2023-08-30 10:25:13,183 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 13 treesize of output 15 [2023-08-30 10:25:13,196 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 16 treesize of output 12 [2023-08-30 10:25:13,222 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:25:13,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 11 [2023-08-30 10:25:13,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-30 10:25:13,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-08-30 10:25:13,375 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 27 treesize of output 29 [2023-08-30 10:25:13,405 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:25:13,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:25:13,419 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2419 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_2419) |c_~#a~0.base|) (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|)) 2147483648))) is different from false [2023-08-30 10:25:14,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2023-08-30 10:25:14,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 8 [2023-08-30 10:25:19,504 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 3 times theorem prover too weak. 56 trivial. 2 not checked. [2023-08-30 10:25:19,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550630841] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:25:19,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:25:19,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 24 [2023-08-30 10:25:19,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060949975] [2023-08-30 10:25:19,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:25:19,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-30 10:25:19,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:19,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-30 10:25:19,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=480, Unknown=7, NotChecked=46, Total=650 [2023-08-30 10:25:20,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:25:21,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 576 [2023-08-30 10:25:21,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 552 transitions, 10893 flow. Second operand has 26 states, 26 states have (on average 181.53846153846155) internal successors, (4720), 26 states have internal predecessors, (4720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:21,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:21,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 576 [2023-08-30 10:25:21,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:27:45,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:28:06,278 INFO L130 PetriNetUnfolder]: 1884/4748 cut-off events. [2023-08-30 10:28:06,278 INFO L131 PetriNetUnfolder]: For 78697/78697 co-relation queries the response was YES. [2023-08-30 10:28:06,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34329 conditions, 4748 events. 1884/4748 cut-off events. For 78697/78697 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 42156 event pairs, 177 based on Foata normal form. 40/4787 useless extension candidates. Maximal degree in co-relation 34188. Up to 2028 conditions per place. [2023-08-30 10:28:06,329 INFO L137 encePairwiseOnDemand]: 553/576 looper letters, 461 selfloop transitions, 365 changer transitions 34/866 dead transitions. [2023-08-30 10:28:06,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 866 transitions, 16722 flow [2023-08-30 10:28:06,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-08-30 10:28:06,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-08-30 10:28:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 11116 transitions. [2023-08-30 10:28:06,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3216435185185185 [2023-08-30 10:28:06,337 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 11116 transitions. [2023-08-30 10:28:06,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 11116 transitions. [2023-08-30 10:28:06,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:28:06,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 11116 transitions. [2023-08-30 10:28:06,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 185.26666666666668) internal successors, (11116), 60 states have internal predecessors, (11116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:28:06,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 576.0) internal successors, (35136), 61 states have internal predecessors, (35136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:28:06,359 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 576.0) internal successors, (35136), 61 states have internal predecessors, (35136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:28:06,359 INFO L175 Difference]: Start difference. First operand has 382 places, 552 transitions, 10893 flow. Second operand 60 states and 11116 transitions. [2023-08-30 10:28:06,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 866 transitions, 16722 flow [2023-08-30 10:28:06,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 866 transitions, 16043 flow, removed 43 selfloop flow, removed 21 redundant places. [2023-08-30 10:28:06,843 INFO L231 Difference]: Finished difference. Result has 438 places, 654 transitions, 13119 flow [2023-08-30 10:28:06,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=10270, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=13119, PETRI_PLACES=438, PETRI_TRANSITIONS=654} [2023-08-30 10:28:06,844 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 351 predicate places. [2023-08-30 10:28:06,844 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 654 transitions, 13119 flow [2023-08-30 10:28:06,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 181.53846153846155) internal successors, (4720), 26 states have internal predecessors, (4720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:28:06,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:28:06,845 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:28:06,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-30 10:28:07,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:28:07,050 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:28:07,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:28:07,050 INFO L85 PathProgramCache]: Analyzing trace with hash -463242881, now seen corresponding path program 1 times [2023-08-30 10:28:07,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:28:07,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831202397] [2023-08-30 10:28:07,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:28:07,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:28:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:28:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:28:07,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:28:07,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831202397] [2023-08-30 10:28:07,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831202397] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:28:07,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782876777] [2023-08-30 10:28:07,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:28:07,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:28:07,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:28:07,326 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:28:07,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-30 10:28:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:28:07,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-30 10:28:07,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:28:07,499 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 7 treesize of output 6 [2023-08-30 10:28:07,549 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:28:07,549 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 11 treesize of output 11 [2023-08-30 10:28:07,565 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 13 treesize of output 15 [2023-08-30 10:28:07,582 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 13 treesize of output 15 [2023-08-30 10:28:07,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-08-30 10:28:07,689 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 40 treesize of output 40 [2023-08-30 10:28:07,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2023-08-30 10:28:07,736 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:28:07,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:28:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:28:08,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782876777] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:28:08,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:28:08,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 22 [2023-08-30 10:28:08,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525896343] [2023-08-30 10:28:08,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:28:08,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 10:28:08,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:28:08,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 10:28:08,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=414, Unknown=8, NotChecked=0, Total=552 [2023-08-30 10:28:08,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 576 [2023-08-30 10:28:08,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 654 transitions, 13119 flow. Second operand has 24 states, 24 states have (on average 203.75) internal successors, (4890), 24 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:28:08,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:28:08,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 576 [2023-08-30 10:28:08,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:28:13,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:28:15,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:28:16,464 INFO L130 PetriNetUnfolder]: 1826/4571 cut-off events. [2023-08-30 10:28:16,465 INFO L131 PetriNetUnfolder]: For 102419/102431 co-relation queries the response was YES. [2023-08-30 10:28:16,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38568 conditions, 4571 events. 1826/4571 cut-off events. For 102419/102431 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 40160 event pairs, 381 based on Foata normal form. 7/4574 useless extension candidates. Maximal degree in co-relation 38412. Up to 2618 conditions per place. [2023-08-30 10:28:16,523 INFO L137 encePairwiseOnDemand]: 564/576 looper letters, 549 selfloop transitions, 161 changer transitions 2/718 dead transitions. [2023-08-30 10:28:16,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 718 transitions, 15344 flow [2023-08-30 10:28:16,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 10:28:16,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 10:28:16,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3527 transitions. [2023-08-30 10:28:16,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3601919934640523 [2023-08-30 10:28:16,545 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3527 transitions. [2023-08-30 10:28:16,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3527 transitions. [2023-08-30 10:28:16,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:28:16,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3527 transitions. [2023-08-30 10:28:16,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 207.47058823529412) internal successors, (3527), 17 states have internal predecessors, (3527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:28:16,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 576.0) internal successors, (10368), 18 states have internal predecessors, (10368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:28:16,553 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 576.0) internal successors, (10368), 18 states have internal predecessors, (10368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:28:16,553 INFO L175 Difference]: Start difference. First operand has 438 places, 654 transitions, 13119 flow. Second operand 17 states and 3527 transitions. [2023-08-30 10:28:16,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 718 transitions, 15344 flow [2023-08-30 10:28:17,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 718 transitions, 14652 flow, removed 120 selfloop flow, removed 29 redundant places. [2023-08-30 10:28:17,169 INFO L231 Difference]: Finished difference. Result has 422 places, 652 transitions, 12735 flow [2023-08-30 10:28:17,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=12413, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=12735, PETRI_PLACES=422, PETRI_TRANSITIONS=652} [2023-08-30 10:28:17,170 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 335 predicate places. [2023-08-30 10:28:17,170 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 652 transitions, 12735 flow [2023-08-30 10:28:17,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 203.75) internal successors, (4890), 24 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:28:17,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:28:17,171 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:28:17,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-30 10:28:17,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:28:17,373 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:28:17,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:28:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1020787778, now seen corresponding path program 3 times [2023-08-30 10:28:17,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:28:17,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014656550] [2023-08-30 10:28:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:28:17,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:28:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:28:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 10:28:17,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:28:17,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014656550] [2023-08-30 10:28:17,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014656550] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:28:17,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084203330] [2023-08-30 10:28:17,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 10:28:17,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:28:17,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:28:17,653 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:28:17,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-30 10:28:17,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 10:28:17,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:28:17,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-30 10:28:17,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:28:17,895 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 7 treesize of output 6 [2023-08-30 10:28:17,974 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:28:17,974 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 11 treesize of output 11 [2023-08-30 10:28:17,991 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 13 treesize of output 15 [2023-08-30 10:28:18,017 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 13 treesize of output 15 [2023-08-30 10:28:18,033 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 16 treesize of output 12 [2023-08-30 10:28:18,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:28:18,077 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 19 treesize of output 21 [2023-08-30 10:28:18,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-30 10:28:18,149 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:28:18,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 11 [2023-08-30 10:28:18,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-08-30 10:28:18,329 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 27 treesize of output 29 [2023-08-30 10:28:18,359 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 10:28:18,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:28:18,695 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:28:18,695 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 29 treesize of output 30 [2023-08-30 10:28:18,704 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:28:18,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 48 treesize of output 38 [2023-08-30 10:28:18,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-08-30 10:28:32,519 WARN L222 SmtUtils]: Spent 5.30s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:28:32,774 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 4 refuted. 1 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:28:32,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084203330] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:28:32,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:28:32,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 27 [2023-08-30 10:28:32,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745253164] [2023-08-30 10:28:32,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:28:32,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 10:28:32,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:28:32,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 10:28:32,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=655, Unknown=11, NotChecked=0, Total=812 [2023-08-30 10:28:34,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:28:36,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:28:37,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 576 [2023-08-30 10:28:37,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 652 transitions, 12735 flow. Second operand has 29 states, 29 states have (on average 180.41379310344828) internal successors, (5232), 29 states have internal predecessors, (5232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:28:37,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:28:37,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 576 [2023-08-30 10:28:37,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:29:23,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:29:25,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:29:36,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:29:38,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:29:40,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:29:42,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:29:50,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:29:52,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:30:00,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:30:03,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:30:06,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:30:08,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:30:09,290 INFO L130 PetriNetUnfolder]: 1961/5012 cut-off events. [2023-08-30 10:30:09,291 INFO L131 PetriNetUnfolder]: For 107586/107586 co-relation queries the response was YES. [2023-08-30 10:30:09,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41405 conditions, 5012 events. 1961/5012 cut-off events. For 107586/107586 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 45442 event pairs, 182 based on Foata normal form. 25/5031 useless extension candidates. Maximal degree in co-relation 41261. Up to 1869 conditions per place. [2023-08-30 10:30:09,378 INFO L137 encePairwiseOnDemand]: 554/576 looper letters, 459 selfloop transitions, 399 changer transitions 33/897 dead transitions. [2023-08-30 10:30:09,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 897 transitions, 18749 flow [2023-08-30 10:30:09,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-30 10:30:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-30 10:30:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 7734 transitions. [2023-08-30 10:30:09,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196924603174603 [2023-08-30 10:30:09,386 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 7734 transitions. [2023-08-30 10:30:09,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 7734 transitions. [2023-08-30 10:30:09,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:09,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 7734 transitions. [2023-08-30 10:30:09,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 184.14285714285714) internal successors, (7734), 42 states have internal predecessors, (7734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:09,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 576.0) internal successors, (24768), 43 states have internal predecessors, (24768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:09,411 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 576.0) internal successors, (24768), 43 states have internal predecessors, (24768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:09,411 INFO L175 Difference]: Start difference. First operand has 422 places, 652 transitions, 12735 flow. Second operand 42 states and 7734 transitions. [2023-08-30 10:30:09,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 897 transitions, 18749 flow [2023-08-30 10:30:10,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 897 transitions, 18236 flow, removed 22 selfloop flow, removed 15 redundant places. [2023-08-30 10:30:10,338 INFO L231 Difference]: Finished difference. Result has 464 places, 733 transitions, 15304 flow [2023-08-30 10:30:10,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=12338, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=15304, PETRI_PLACES=464, PETRI_TRANSITIONS=733} [2023-08-30 10:30:10,339 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 377 predicate places. [2023-08-30 10:30:10,339 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 733 transitions, 15304 flow [2023-08-30 10:30:10,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 180.41379310344828) internal successors, (5232), 29 states have internal predecessors, (5232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:10,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:10,340 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:10,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-30 10:30:10,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-08-30 10:30:10,546 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:30:10,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:10,548 INFO L85 PathProgramCache]: Analyzing trace with hash 450434898, now seen corresponding path program 3 times [2023-08-30 10:30:10,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:10,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823388941] [2023-08-30 10:30:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:10,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:10,854 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:30:10,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:10,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823388941] [2023-08-30 10:30:10,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823388941] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:30:10,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154173448] [2023-08-30 10:30:10,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 10:30:10,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:10,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:30:10,857 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:30:10,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-30 10:30:11,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 10:30:11,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:30:11,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-30 10:30:11,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:30:11,068 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 7 treesize of output 6 [2023-08-30 10:30:11,161 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:30:11,162 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 11 treesize of output 11 [2023-08-30 10:30:11,184 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 13 treesize of output 15 [2023-08-30 10:30:11,214 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 13 treesize of output 15 [2023-08-30 10:30:11,247 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 16 treesize of output 12 [2023-08-30 10:30:11,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:11,304 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 19 treesize of output 21 [2023-08-30 10:30:11,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-30 10:30:11,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:11,365 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 19 treesize of output 21 [2023-08-30 10:30:11,407 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:30:11,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 11 [2023-08-30 10:30:11,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-08-30 10:30:11,552 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 27 treesize of output 29 [2023-08-30 10:30:11,582 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:30:11,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:30:11,989 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_t_funThread2of2ForFork0_~i~0#1_121| Int) (v_ArrVal_2727 Int) (v_ArrVal_2732 (Array Int Int)) (v_ArrVal_2731 Int) (v_ArrVal_2729 (Array Int Int))) (let ((.cse2 (* |v_t_funThread2of2ForFork0_~i~0#1_121| 28))) (let ((.cse0 (store (select |c_#memory_int| |c_~#a~0.base|) (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|) v_ArrVal_2727)) (.cse1 (+ |c_~#a~0.offset| .cse2))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#a~0.base| (store .cse0 .cse1 v_ArrVal_2731)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_2732) |c_~#a~0.base|) .cse1) 2147483648)) (not (= (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_2729) |c_~#a~0.base|) (+ |c_~#a~0.offset| .cse2 (- 24))) 0)) (< v_ArrVal_2731 (+ (select .cse0 .cse1) 1)))))) is different from false [2023-08-30 10:30:12,048 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:30:12,048 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 29 treesize of output 30 [2023-08-30 10:30:12,059 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:30:12,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 48 treesize of output 38 [2023-08-30 10:30:12,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-08-30 10:30:27,730 WARN L222 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:30:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 3 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:30:27,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154173448] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:30:27,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:30:27,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 27 [2023-08-30 10:30:27,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108642429] [2023-08-30 10:30:27,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:30:27,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 10:30:27,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 10:30:27,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=608, Unknown=11, NotChecked=52, Total=812 [2023-08-30 10:30:28,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 576 [2023-08-30 10:30:28,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 733 transitions, 15304 flow. Second operand has 29 states, 29 states have (on average 180.3448275862069) internal successors, (5230), 29 states have internal predecessors, (5230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:28,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:28,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 576 [2023-08-30 10:30:28,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:54,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:30:57,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:00,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:00,908 INFO L130 PetriNetUnfolder]: 1886/4762 cut-off events. [2023-08-30 10:31:00,909 INFO L131 PetriNetUnfolder]: For 117662/117680 co-relation queries the response was YES. [2023-08-30 10:31:00,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41949 conditions, 4762 events. 1886/4762 cut-off events. For 117662/117680 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 42890 event pairs, 162 based on Foata normal form. 8/4770 useless extension candidates. Maximal degree in co-relation 41791. Up to 2122 conditions per place. [2023-08-30 10:31:00,967 INFO L137 encePairwiseOnDemand]: 558/576 looper letters, 467 selfloop transitions, 363 changer transitions 4/840 dead transitions. [2023-08-30 10:31:00,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 840 transitions, 18841 flow [2023-08-30 10:31:00,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-30 10:31:00,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-30 10:31:00,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 6073 transitions. [2023-08-30 10:31:00,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31949705387205385 [2023-08-30 10:31:00,972 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 6073 transitions. [2023-08-30 10:31:00,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 6073 transitions. [2023-08-30 10:31:00,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:31:00,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 6073 transitions. [2023-08-30 10:31:00,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 184.03030303030303) internal successors, (6073), 33 states have internal predecessors, (6073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:00,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 576.0) internal successors, (19584), 34 states have internal predecessors, (19584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:00,984 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 576.0) internal successors, (19584), 34 states have internal predecessors, (19584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:00,984 INFO L175 Difference]: Start difference. First operand has 464 places, 733 transitions, 15304 flow. Second operand 33 states and 6073 transitions. [2023-08-30 10:31:00,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 840 transitions, 18841 flow [2023-08-30 10:31:01,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 840 transitions, 18465 flow, removed 95 selfloop flow, removed 19 redundant places. [2023-08-30 10:31:01,821 INFO L231 Difference]: Finished difference. Result has 478 places, 752 transitions, 16377 flow [2023-08-30 10:31:01,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=14941, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=16377, PETRI_PLACES=478, PETRI_TRANSITIONS=752} [2023-08-30 10:31:01,823 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 391 predicate places. [2023-08-30 10:31:01,823 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 752 transitions, 16377 flow [2023-08-30 10:31:01,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 180.3448275862069) internal successors, (5230), 29 states have internal predecessors, (5230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:01,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:31:01,824 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:31:01,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-30 10:31:02,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-08-30 10:31:02,029 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:31:02,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:31:02,029 INFO L85 PathProgramCache]: Analyzing trace with hash 28665038, now seen corresponding path program 4 times [2023-08-30 10:31:02,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:31:02,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272470021] [2023-08-30 10:31:02,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:31:02,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:31:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:31:02,268 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:31:02,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:31:02,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272470021] [2023-08-30 10:31:02,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272470021] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:31:02,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857158966] [2023-08-30 10:31:02,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 10:31:02,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:31:02,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:31:02,269 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:31:02,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-30 10:31:02,451 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 10:31:02,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:31:02,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-30 10:31:02,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:31:02,457 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 7 treesize of output 6 [2023-08-30 10:31:02,505 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:31:02,505 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 11 treesize of output 11 [2023-08-30 10:31:02,522 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 13 treesize of output 15 [2023-08-30 10:31:02,538 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 13 treesize of output 15 [2023-08-30 10:31:02,556 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 16 treesize of output 12 [2023-08-30 10:31:02,587 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:31:02,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 11 [2023-08-30 10:31:02,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2023-08-30 10:31:02,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2023-08-30 10:31:02,769 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 27 treesize of output 29 [2023-08-30 10:31:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:31:02,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:31:02,811 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2836 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_2836) |c_~#a~0.base|) (+ |c_~#a~0.offset| (* |c_t_funThread2of2ForFork0_~i~0#1| 28))) 2147483648))) is different from false [2023-08-30 10:31:07,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2023-08-30 10:31:07,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 8 [2023-08-30 10:31:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 3 times theorem prover too weak. 56 trivial. 2 not checked. [2023-08-30 10:31:09,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857158966] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:31:09,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:31:09,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 23 [2023-08-30 10:31:09,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618357748] [2023-08-30 10:31:09,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:31:09,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 10:31:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:31:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 10:31:09,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=441, Unknown=8, NotChecked=44, Total=600 [2023-08-30 10:31:09,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 576 [2023-08-30 10:31:09,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 752 transitions, 16377 flow. Second operand has 25 states, 25 states have (on average 181.64) internal successors, (4541), 25 states have internal predecessors, (4541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:09,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:31:09,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 576 [2023-08-30 10:31:09,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:31:12,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:21,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:23,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:28,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:31,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:31:33,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:35,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:37,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:31:39,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:44,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:31:46,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:57,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:59,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:32:02,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:04,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:05,173 INFO L130 PetriNetUnfolder]: 2007/5156 cut-off events. [2023-08-30 10:32:05,174 INFO L131 PetriNetUnfolder]: For 144120/144152 co-relation queries the response was YES. [2023-08-30 10:32:05,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46478 conditions, 5156 events. 2007/5156 cut-off events. For 144120/144152 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 47635 event pairs, 208 based on Foata normal form. 61/5217 useless extension candidates. Maximal degree in co-relation 46319. Up to 2501 conditions per place. [2023-08-30 10:32:05,242 INFO L137 encePairwiseOnDemand]: 556/576 looper letters, 590 selfloop transitions, 289 changer transitions 67/952 dead transitions. [2023-08-30 10:32:05,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 952 transitions, 21740 flow [2023-08-30 10:32:05,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-30 10:32:05,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-30 10:32:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 7592 transitions. [2023-08-30 10:32:05,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3214769647696477 [2023-08-30 10:32:05,247 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 7592 transitions. [2023-08-30 10:32:05,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 7592 transitions. [2023-08-30 10:32:05,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:32:05,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 7592 transitions. [2023-08-30 10:32:05,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 185.17073170731706) internal successors, (7592), 41 states have internal predecessors, (7592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:05,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 576.0) internal successors, (24192), 42 states have internal predecessors, (24192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:05,264 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 576.0) internal successors, (24192), 42 states have internal predecessors, (24192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:05,264 INFO L175 Difference]: Start difference. First operand has 478 places, 752 transitions, 16377 flow. Second operand 41 states and 7592 transitions. [2023-08-30 10:32:05,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 952 transitions, 21740 flow [2023-08-30 10:32:06,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 952 transitions, 21416 flow, removed 39 selfloop flow, removed 16 redundant places. [2023-08-30 10:32:06,291 INFO L231 Difference]: Finished difference. Result has 516 places, 761 transitions, 17213 flow [2023-08-30 10:32:06,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=16058, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=17213, PETRI_PLACES=516, PETRI_TRANSITIONS=761} [2023-08-30 10:32:06,292 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 429 predicate places. [2023-08-30 10:32:06,292 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 761 transitions, 17213 flow [2023-08-30 10:32:06,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 181.64) internal successors, (4541), 25 states have internal predecessors, (4541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:06,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:32:06,293 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:32:06,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-30 10:32:06,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-08-30 10:32:06,497 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:32:06,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:32:06,497 INFO L85 PathProgramCache]: Analyzing trace with hash 28665137, now seen corresponding path program 2 times [2023-08-30 10:32:06,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:32:06,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484644066] [2023-08-30 10:32:06,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:32:06,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:32:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:32:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:32:06,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:32:06,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484644066] [2023-08-30 10:32:06,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484644066] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:32:06,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499054918] [2023-08-30 10:32:06,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:32:06,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:32:06,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:32:06,815 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:32:06,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-30 10:32:06,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:32:07,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:32:07,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:32:07,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:32:07,043 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:32:07,044 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 11 treesize of output 11 [2023-08-30 10:32:07,100 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 15 treesize of output 11 [2023-08-30 10:32:07,165 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-08-30 10:32:07,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 27 treesize of output 30 [2023-08-30 10:32:07,189 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 18 treesize of output 20 [2023-08-30 10:32:07,202 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:32:07,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:32:07,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499054918] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:32:07,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:32:07,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2023-08-30 10:32:07,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569968970] [2023-08-30 10:32:07,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:32:07,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:32:07,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:32:07,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:32:07,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-08-30 10:32:07,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 576 [2023-08-30 10:32:07,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 761 transitions, 17213 flow. Second operand has 8 states, 8 states have (on average 237.75) internal successors, (1902), 8 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:07,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:32:07,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 576 [2023-08-30 10:32:07,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:32:08,957 INFO L130 PetriNetUnfolder]: 1877/4814 cut-off events. [2023-08-30 10:32:08,957 INFO L131 PetriNetUnfolder]: For 151589/151621 co-relation queries the response was YES. [2023-08-30 10:32:08,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45259 conditions, 4814 events. 1877/4814 cut-off events. For 151589/151621 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 43883 event pairs, 543 based on Foata normal form. 22/4830 useless extension candidates. Maximal degree in co-relation 45084. Up to 1835 conditions per place. [2023-08-30 10:32:09,018 INFO L137 encePairwiseOnDemand]: 566/576 looper letters, 568 selfloop transitions, 216 changer transitions 6/796 dead transitions. [2023-08-30 10:32:09,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 796 transitions, 19436 flow [2023-08-30 10:32:09,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:32:09,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:32:09,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1703 transitions. [2023-08-30 10:32:09,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42237103174603174 [2023-08-30 10:32:09,020 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1703 transitions. [2023-08-30 10:32:09,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1703 transitions. [2023-08-30 10:32:09,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:32:09,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1703 transitions. [2023-08-30 10:32:09,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 243.28571428571428) internal successors, (1703), 7 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:09,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 576.0) internal successors, (4608), 8 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:09,024 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 576.0) internal successors, (4608), 8 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:09,024 INFO L175 Difference]: Start difference. First operand has 516 places, 761 transitions, 17213 flow. Second operand 7 states and 1703 transitions. [2023-08-30 10:32:09,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 796 transitions, 19436 flow [2023-08-30 10:32:10,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 796 transitions, 18885 flow, removed 74 selfloop flow, removed 21 redundant places. [2023-08-30 10:32:10,019 INFO L231 Difference]: Finished difference. Result has 499 places, 758 transitions, 17315 flow [2023-08-30 10:32:10,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=16599, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17315, PETRI_PLACES=499, PETRI_TRANSITIONS=758} [2023-08-30 10:32:10,020 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 412 predicate places. [2023-08-30 10:32:10,020 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 758 transitions, 17315 flow [2023-08-30 10:32:10,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 237.75) internal successors, (1902), 8 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:10,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:32:10,021 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:32:10,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-08-30 10:32:10,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2023-08-30 10:32:10,226 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:32:10,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:32:10,227 INFO L85 PathProgramCache]: Analyzing trace with hash -825388845, now seen corresponding path program 1 times [2023-08-30 10:32:10,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:32:10,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477772294] [2023-08-30 10:32:10,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:32:10,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:32:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:32:10,453 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:32:10,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:32:10,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477772294] [2023-08-30 10:32:10,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477772294] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:32:10,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123602587] [2023-08-30 10:32:10,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:32:10,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:32:10,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:32:10,455 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:32:10,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-30 10:32:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:32:10,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-30 10:32:10,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:32:10,642 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 7 treesize of output 6 [2023-08-30 10:32:10,691 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:32:10,692 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 11 treesize of output 11 [2023-08-30 10:32:10,707 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 13 treesize of output 15 [2023-08-30 10:32:10,748 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 13 treesize of output 15 [2023-08-30 10:32:10,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-08-30 10:32:10,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2023-08-30 10:32:10,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2023-08-30 10:32:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:32:10,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:32:11,121 WARN L839 $PredicateComparison]: unable to prove that (forall ((|~#a~0.offset| Int) (|t_funThread2of2ForFork0_~i~0#1| Int) (|t_funThread1of2ForFork0_~i~0#1| Int) (v_ArrVal_3040 (Array Int Int))) (< 0 (+ 2147483649 (select (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_3040) |c_~#a~0.base|)) (.cse1 (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|))) (store .cse0 .cse1 (select .cse0 .cse1))) (+ (* 28 |t_funThread2of2ForFork0_~i~0#1|) |~#a~0.offset|))))) is different from false [2023-08-30 10:32:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-30 10:32:11,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123602587] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:32:11,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:32:11,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 23 [2023-08-30 10:32:11,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254462936] [2023-08-30 10:32:11,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:32:11,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 10:32:11,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:32:11,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 10:32:11,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=415, Unknown=1, NotChecked=44, Total=600 [2023-08-30 10:32:11,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 576 [2023-08-30 10:32:11,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 758 transitions, 17315 flow. Second operand has 25 states, 25 states have (on average 197.88) internal successors, (4947), 25 states have internal predecessors, (4947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:11,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:32:11,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 576 [2023-08-30 10:32:11,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:32:14,405 INFO L130 PetriNetUnfolder]: 1952/5045 cut-off events. [2023-08-30 10:32:14,405 INFO L131 PetriNetUnfolder]: For 160654/160686 co-relation queries the response was YES. [2023-08-30 10:32:14,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47751 conditions, 5045 events. 1952/5045 cut-off events. For 160654/160686 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 46623 event pairs, 303 based on Foata normal form. 18/5059 useless extension candidates. Maximal degree in co-relation 47581. Up to 2463 conditions per place. [2023-08-30 10:32:14,474 INFO L137 encePairwiseOnDemand]: 561/576 looper letters, 529 selfloop transitions, 322 changer transitions 17/874 dead transitions. [2023-08-30 10:32:14,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 874 transitions, 21179 flow [2023-08-30 10:32:14,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 10:32:14,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 10:32:14,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4837 transitions. [2023-08-30 10:32:14,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34989872685185186 [2023-08-30 10:32:14,478 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4837 transitions. [2023-08-30 10:32:14,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4837 transitions. [2023-08-30 10:32:14,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:32:14,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4837 transitions. [2023-08-30 10:32:14,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 201.54166666666666) internal successors, (4837), 24 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:14,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 576.0) internal successors, (14400), 25 states have internal predecessors, (14400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:14,488 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 576.0) internal successors, (14400), 25 states have internal predecessors, (14400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:14,488 INFO L175 Difference]: Start difference. First operand has 499 places, 758 transitions, 17315 flow. Second operand 24 states and 4837 transitions. [2023-08-30 10:32:14,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 874 transitions, 21179 flow [2023-08-30 10:32:15,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 874 transitions, 20899 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 10:32:15,533 INFO L231 Difference]: Finished difference. Result has 528 places, 788 transitions, 18631 flow [2023-08-30 10:32:15,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=17055, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=18631, PETRI_PLACES=528, PETRI_TRANSITIONS=788} [2023-08-30 10:32:15,534 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 441 predicate places. [2023-08-30 10:32:15,535 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 788 transitions, 18631 flow [2023-08-30 10:32:15,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 197.88) internal successors, (4947), 25 states have internal predecessors, (4947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:15,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:32:15,535 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:32:15,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-30 10:32:15,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:32:15,740 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:32:15,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:32:15,741 INFO L85 PathProgramCache]: Analyzing trace with hash -712275462, now seen corresponding path program 1 times [2023-08-30 10:32:15,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:32:15,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060045903] [2023-08-30 10:32:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:32:15,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:32:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:32:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 10:32:15,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:32:15,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060045903] [2023-08-30 10:32:15,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060045903] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:32:15,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:32:15,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:32:15,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631101018] [2023-08-30 10:32:15,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:32:15,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:32:15,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:32:15,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:32:15,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:32:16,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 576 [2023-08-30 10:32:16,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 788 transitions, 18631 flow. Second operand has 7 states, 7 states have (on average 237.57142857142858) internal successors, (1663), 7 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:16,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:32:16,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 576 [2023-08-30 10:32:16,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:32:17,897 INFO L130 PetriNetUnfolder]: 1888/4910 cut-off events. [2023-08-30 10:32:17,897 INFO L131 PetriNetUnfolder]: For 165264/165316 co-relation queries the response was YES. [2023-08-30 10:32:17,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47627 conditions, 4910 events. 1888/4910 cut-off events. For 165264/165316 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 45440 event pairs, 423 based on Foata normal form. 57/4963 useless extension candidates. Maximal degree in co-relation 47447. Up to 2356 conditions per place. [2023-08-30 10:32:17,963 INFO L137 encePairwiseOnDemand]: 562/576 looper letters, 498 selfloop transitions, 304 changer transitions 29/837 dead transitions. [2023-08-30 10:32:17,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 837 transitions, 21038 flow [2023-08-30 10:32:17,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:32:17,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:32:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2187 transitions. [2023-08-30 10:32:17,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2023-08-30 10:32:17,965 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2187 transitions. [2023-08-30 10:32:17,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2187 transitions. [2023-08-30 10:32:17,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:32:17,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2187 transitions. [2023-08-30 10:32:17,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 243.0) internal successors, (2187), 9 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:17,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 576.0) internal successors, (5760), 10 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:17,969 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 576.0) internal successors, (5760), 10 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:17,969 INFO L175 Difference]: Start difference. First operand has 528 places, 788 transitions, 18631 flow. Second operand 9 states and 2187 transitions. [2023-08-30 10:32:17,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 837 transitions, 21038 flow [2023-08-30 10:32:18,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 837 transitions, 20607 flow, removed 55 selfloop flow, removed 14 redundant places. [2023-08-30 10:32:18,959 INFO L231 Difference]: Finished difference. Result has 525 places, 769 transitions, 18676 flow [2023-08-30 10:32:18,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=18067, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=782, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18676, PETRI_PLACES=525, PETRI_TRANSITIONS=769} [2023-08-30 10:32:18,960 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 438 predicate places. [2023-08-30 10:32:18,960 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 769 transitions, 18676 flow [2023-08-30 10:32:18,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 237.57142857142858) internal successors, (1663), 7 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:18,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:32:18,960 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:32:18,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-30 10:32:18,960 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:32:18,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:32:18,961 INFO L85 PathProgramCache]: Analyzing trace with hash 563820569, now seen corresponding path program 2 times [2023-08-30 10:32:18,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:32:18,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284685695] [2023-08-30 10:32:18,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:32:18,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:32:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:32:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:32:19,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:32:19,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284685695] [2023-08-30 10:32:19,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284685695] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:32:19,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893063831] [2023-08-30 10:32:19,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:32:19,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:32:19,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:32:19,394 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:32:19,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-30 10:32:19,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:32:19,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:32:19,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-30 10:32:19,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:32:19,599 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 7 treesize of output 6 [2023-08-30 10:32:19,682 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:32:19,682 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 11 treesize of output 11 [2023-08-30 10:32:19,704 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 13 treesize of output 15 [2023-08-30 10:32:19,731 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 16 treesize of output 12 [2023-08-30 10:32:19,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:32:19,780 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 19 treesize of output 21 [2023-08-30 10:32:19,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-30 10:32:19,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:32:19,838 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 19 treesize of output 21 [2023-08-30 10:32:19,872 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 20 treesize of output 22 [2023-08-30 10:32:19,913 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:32:19,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 11 [2023-08-30 10:32:19,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-08-30 10:32:20,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 31 [2023-08-30 10:32:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:32:20,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:32:20,614 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:32:20,615 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 29 treesize of output 30 [2023-08-30 10:32:20,623 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:32:20,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 48 treesize of output 38 [2023-08-30 10:32:20,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-08-30 10:32:27,043 WARN L222 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:32:27,249 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:32:27,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893063831] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:32:27,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:32:27,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 31 [2023-08-30 10:32:27,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574046050] [2023-08-30 10:32:27,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:32:27,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-30 10:32:27,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:32:27,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-30 10:32:27,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=920, Unknown=9, NotChecked=0, Total=1056 [2023-08-30 10:32:30,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:31,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 576 [2023-08-30 10:32:31,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 769 transitions, 18676 flow. Second operand has 33 states, 33 states have (on average 174.36363636363637) internal successors, (5754), 33 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:31,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:32:31,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 576 [2023-08-30 10:32:31,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:32:41,356 WARN L222 SmtUtils]: Spent 8.62s on a formula simplification. DAG size of input: 162 DAG size of output: 113 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:32:59,117 WARN L222 SmtUtils]: Spent 7.88s on a formula simplification. DAG size of input: 100 DAG size of output: 87 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:33:11,702 WARN L222 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 140 DAG size of output: 105 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:33:15,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:33:17,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:33:24,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:33:36,920 WARN L222 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 115 DAG size of output: 77 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:33:38,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:33:40,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:33:55,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:34:16,693 WARN L222 SmtUtils]: Spent 6.84s on a formula simplification. DAG size of input: 159 DAG size of output: 108 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:34:19,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:34:32,358 WARN L222 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 133 DAG size of output: 126 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:34:34,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:34:44,204 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|))) (and (forall ((|v_t_funThread2of2ForFork0_~i~0#1_127| Int) (v_ArrVal_3212 Int) (v_ArrVal_3210 Int) (v_ArrVal_3207 (Array Int Int)) (v_ArrVal_3208 (Array Int Int))) (let ((.cse3 (* |v_t_funThread2of2ForFork0_~i~0#1_127| 28))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_3208) |c_~#a~0.base|)) (.cse1 (+ |c_~#a~0.offset| .cse3))) (or (< 0 (+ (select (store (store .cse0 .cse1 v_ArrVal_3210) .cse2 v_ArrVal_3212) .cse1) 2147483648)) (< v_ArrVal_3210 (+ (select .cse0 .cse1) 1)) (not (= 0 (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_3207) |c_~#a~0.base|) (+ |c_~#a~0.offset| .cse3 (- 24))))))))) (forall ((|v_t_funThread2of2ForFork0_~i~0#1_127| Int) (v_ArrVal_3212 Int) (v_ArrVal_3210 Int)) (let ((.cse4 (* |v_t_funThread2of2ForFork0_~i~0#1_127| 28))) (let ((.cse5 (select |c_#memory_int| |c_~#a~0.base|)) (.cse6 (+ |c_~#a~0.offset| .cse4))) (or (not (= (select (select |c_#pthreadsMutex| |c_~#a~0.base|) (+ |c_~#a~0.offset| .cse4 (- 24))) 0)) (< v_ArrVal_3210 (+ (select .cse5 .cse6) 1)) (< 0 (+ (select (store (store .cse5 .cse6 v_ArrVal_3210) .cse2 v_ArrVal_3212) .cse6) 2147483648)))))))) is different from false [2023-08-30 10:34:46,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:34:55,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:34:57,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:35:18,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:35:20,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:35:52,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:36:03,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:36:08,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:36:10,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:36:12,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:36:21,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:36:23,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:36:25,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:36:27,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:36:36,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:36:38,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] Killed by 15