./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_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_09-ptrmunge_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 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f --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 10:01:24,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:01:24,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:01:24,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:01:24,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:01:24,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:01:24,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:01:24,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:01:24,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:01:24,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:01:24,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:01:24,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:01:24,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:01:24,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:01:24,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:01:24,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:01:24,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:01:24,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:01:24,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:01:24,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:01:24,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:01:24,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:01:24,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:01:24,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:01:24,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:01:24,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:01:24,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:01:24,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:01:24,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:01:24,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:01:24,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:01:24,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:01:24,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:01:24,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:01:24,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:01:24,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:01:24,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:01:24,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:01:24,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:01:24,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:01:24,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:01:24,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:01:24,948 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:01:24,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:01:24,949 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:01:24,949 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:01:24,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:01:24,950 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:01:24,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:01:24,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:01:24,951 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:01:24,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:01:24,952 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:01:24,953 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:01:24,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:01:24,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:01:24,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:01:24,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:01:24,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:01:24,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:01:24,954 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:01:24,954 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:01:24,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:01:24,954 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:01:24,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:01:24,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:01:24,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:01:24,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:01:24,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:01:24,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:01:24,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:01:24,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:01:24,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:01:24,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:01:24,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:01:24,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:01:24,957 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:01:24,957 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:01:24,957 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:01:24,957 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:01:25,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:01:25,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:01:25,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:01:25,271 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:01:25,271 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:01:25,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-08-30 10:01:26,333 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:01:26,585 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:01:26,586 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-08-30 10:01:26,597 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ba0c78b8/62422741f117458fa1e5c30929c4e8b9/FLAG127cd8537 [2023-08-30 10:01:26,616 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ba0c78b8/62422741f117458fa1e5c30929c4e8b9 [2023-08-30 10:01:26,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:01:26,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:01:26,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:01:26,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:01:26,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:01:26,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:01:26" (1/1) ... [2023-08-30 10:01:26,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52f05e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:01:26, skipping insertion in model container [2023-08-30 10:01:26,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:01:26" (1/1) ... [2023-08-30 10:01:26,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:01:26,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:01:26,925 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_09-ptrmunge_racing.i[30176,30189] [2023-08-30 10:01:26,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:01:26,974 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:01:27,051 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_09-ptrmunge_racing.i[30176,30189] [2023-08-30 10:01:27,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:01:27,105 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:01:27,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:01:27 WrapperNode [2023-08-30 10:01:27,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:01:27,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:01:27,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:01:27,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:01:27,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:01:27" (1/1) ... [2023-08-30 10:01:27,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:01:27" (1/1) ... [2023-08-30 10:01:27,181 INFO L138 Inliner]: procedures = 172, calls = 50, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 234 [2023-08-30 10:01:27,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:01:27,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:01:27,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:01:27,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:01:27,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:01:27" (1/1) ... [2023-08-30 10:01:27,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:01:27" (1/1) ... [2023-08-30 10:01:27,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:01:27" (1/1) ... [2023-08-30 10:01:27,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:01:27" (1/1) ... [2023-08-30 10:01:27,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:01:27" (1/1) ... [2023-08-30 10:01:27,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:01:27" (1/1) ... [2023-08-30 10:01:27,209 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:01:27" (1/1) ... [2023-08-30 10:01:27,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:01:27" (1/1) ... [2023-08-30 10:01:27,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:01:27,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:01:27,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:01:27,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:01:27,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:01:27" (1/1) ... [2023-08-30 10:01:27,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:01:27,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:01:27,242 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 10:01:27,268 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 10:01:27,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:01:27,284 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-30 10:01:27,284 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-30 10:01:27,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:01:27,285 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:01:27,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:01:27,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:01:27,285 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-30 10:01:27,285 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-30 10:01:27,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:01:27,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:01:27,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:01:27,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:01:27,287 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 10:01:27,480 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:01:27,482 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:01:27,868 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:01:27,878 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:01:27,879 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-30 10:01:27,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:01:27 BoogieIcfgContainer [2023-08-30 10:01:27,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:01:27,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:01:27,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:01:27,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:01:27,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:01:26" (1/3) ... [2023-08-30 10:01:27,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794b57fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:01:27, skipping insertion in model container [2023-08-30 10:01:27,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:01:27" (2/3) ... [2023-08-30 10:01:27,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794b57fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:01:27, skipping insertion in model container [2023-08-30 10:01:27,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:01:27" (3/3) ... [2023-08-30 10:01:27,892 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_09-ptrmunge_racing.i [2023-08-30 10:01:27,901 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:01:27,910 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:01:27,910 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 10:01:27,910 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:01:28,012 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 10:01:28,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 245 transitions, 512 flow [2023-08-30 10:01:28,212 INFO L130 PetriNetUnfolder]: 58/437 cut-off events. [2023-08-30 10:01:28,212 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 10:01:28,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 437 events. 58/437 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1925 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2023-08-30 10:01:28,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 245 transitions, 512 flow [2023-08-30 10:01:28,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 245 transitions, 512 flow [2023-08-30 10:01:28,244 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:01:28,261 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 245 transitions, 512 flow [2023-08-30 10:01:28,263 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 245 transitions, 512 flow [2023-08-30 10:01:28,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 245 transitions, 512 flow [2023-08-30 10:01:28,355 INFO L130 PetriNetUnfolder]: 58/437 cut-off events. [2023-08-30 10:01:28,355 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 10:01:28,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 437 events. 58/437 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1925 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2023-08-30 10:01:28,374 INFO L119 LiptonReduction]: Number of co-enabled transitions 25704 [2023-08-30 10:01:32,949 INFO L134 LiptonReduction]: Checked pairs total: 47433 [2023-08-30 10:01:32,950 INFO L136 LiptonReduction]: Total number of compositions: 205 [2023-08-30 10:01:32,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:01:32,968 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;@5a851718, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:01:32,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-30 10:01:32,971 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-30 10:01:32,971 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:01:32,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:32,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 10:01:32,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:01:32,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:32,977 INFO L85 PathProgramCache]: Analyzing trace with hash 30363788, now seen corresponding path program 1 times [2023-08-30 10:01:32,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:32,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178732563] [2023-08-30 10:01:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:32,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:33,231 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 10:01:33,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:01:33,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178732563] [2023-08-30 10:01:33,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178732563] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:01:33,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:01:33,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:01:33,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237489981] [2023-08-30 10:01:33,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:01:33,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:01:33,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:01:33,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:01:33,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:01:33,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 450 [2023-08-30 10:01:33,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 94 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:33,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:01:33,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 450 [2023-08-30 10:01:33,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:01:34,247 INFO L130 PetriNetUnfolder]: 7034/11443 cut-off events. [2023-08-30 10:01:34,247 INFO L131 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2023-08-30 10:01:34,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22179 conditions, 11443 events. 7034/11443 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 75888 event pairs, 6004 based on Foata normal form. 1372/8810 useless extension candidates. Maximal degree in co-relation 21236. Up to 10578 conditions per place. [2023-08-30 10:01:34,313 INFO L137 encePairwiseOnDemand]: 424/450 looper letters, 77 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-08-30 10:01:34,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 90 transitions, 360 flow [2023-08-30 10:01:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:01:34,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:01:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 734 transitions. [2023-08-30 10:01:34,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437037037037037 [2023-08-30 10:01:34,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 734 transitions. [2023-08-30 10:01:34,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 734 transitions. [2023-08-30 10:01:34,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:01:34,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 734 transitions. [2023-08-30 10:01:34,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:34,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 450.0) internal successors, (1800), 4 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:34,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 450.0) internal successors, (1800), 4 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:34,352 INFO L175 Difference]: Start difference. First operand has 72 places, 94 transitions, 210 flow. Second operand 3 states and 734 transitions. [2023-08-30 10:01:34,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 90 transitions, 360 flow [2023-08-30 10:01:34,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:01:34,361 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 172 flow [2023-08-30 10:01:34,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=450, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2023-08-30 10:01:34,368 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2023-08-30 10:01:34,368 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 172 flow [2023-08-30 10:01:34,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:34,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:34,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:01:34,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:01:34,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:01:34,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:34,382 INFO L85 PathProgramCache]: Analyzing trace with hash -179741821, now seen corresponding path program 1 times [2023-08-30 10:01:34,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:34,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109546251] [2023-08-30 10:01:34,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:34,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:34,570 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 10:01:34,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:01:34,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109546251] [2023-08-30 10:01:34,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109546251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:01:34,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:01:34,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:01:34,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10826260] [2023-08-30 10:01:34,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:01:34,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:01:34,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:01:34,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:01:34,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:01:34,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 450 [2023-08-30 10:01:34,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 172 flow. Second operand has 5 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 10:01:34,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:01:34,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 450 [2023-08-30 10:01:34,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:01:35,622 INFO L130 PetriNetUnfolder]: 7058/11474 cut-off events. [2023-08-30 10:01:35,622 INFO L131 PetriNetUnfolder]: For 170/170 co-relation queries the response was YES. [2023-08-30 10:01:35,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22415 conditions, 11474 events. 7058/11474 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 77162 event pairs, 4964 based on Foata normal form. 0/7447 useless extension candidates. Maximal degree in co-relation 22291. Up to 10521 conditions per place. [2023-08-30 10:01:35,682 INFO L137 encePairwiseOnDemand]: 442/450 looper letters, 93 selfloop transitions, 11 changer transitions 10/125 dead transitions. [2023-08-30 10:01:35,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 125 transitions, 524 flow [2023-08-30 10:01:35,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:01:35,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:01:35,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1306 transitions. [2023-08-30 10:01:35,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837037037037037 [2023-08-30 10:01:35,687 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1306 transitions. [2023-08-30 10:01:35,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1306 transitions. [2023-08-30 10:01:35,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:01:35,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1306 transitions. [2023-08-30 10:01:35,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.66666666666666) internal successors, (1306), 6 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:35,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 450.0) internal successors, (3150), 7 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:35,696 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 450.0) internal successors, (3150), 7 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:35,696 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 172 flow. Second operand 6 states and 1306 transitions. [2023-08-30 10:01:35,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 125 transitions, 524 flow [2023-08-30 10:01:35,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 125 transitions, 516 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:01:35,702 INFO L231 Difference]: Finished difference. Result has 78 places, 81 transitions, 236 flow [2023-08-30 10:01:35,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=450, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=78, PETRI_TRANSITIONS=81} [2023-08-30 10:01:35,703 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 6 predicate places. [2023-08-30 10:01:35,704 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 81 transitions, 236 flow [2023-08-30 10:01:35,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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 10:01:35,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:35,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:01:35,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:01:35,706 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:01:35,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:35,709 INFO L85 PathProgramCache]: Analyzing trace with hash -169312577, now seen corresponding path program 1 times [2023-08-30 10:01:35,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:35,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616291611] [2023-08-30 10:01:35,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:35,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:35,793 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 10:01:35,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:01:35,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616291611] [2023-08-30 10:01:35,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616291611] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:01:35,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721009538] [2023-08-30 10:01:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:35,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:01:35,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:01:35,798 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 10:01:35,804 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 10:01:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:35,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:01:35,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:01:35,924 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 10:01:35,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:01:35,941 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 10:01:35,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721009538] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:01:35,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:01:35,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:01:35,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224780804] [2023-08-30 10:01:35,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:01:35,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:01:35,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:01:35,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:01:35,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:01:35,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 450 [2023-08-30 10:01:35,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 208.42857142857142) internal successors, (1459), 7 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:35,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:01:35,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 450 [2023-08-30 10:01:35,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:01:36,019 INFO L130 PetriNetUnfolder]: 34/123 cut-off events. [2023-08-30 10:01:36,019 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 10:01:36,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 123 events. 34/123 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 481 event pairs, 0 based on Foata normal form. 18/130 useless extension candidates. Maximal degree in co-relation 303. Up to 80 conditions per place. [2023-08-30 10:01:36,020 INFO L137 encePairwiseOnDemand]: 447/450 looper letters, 25 selfloop transitions, 2 changer transitions 16/45 dead transitions. [2023-08-30 10:01:36,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 45 transitions, 210 flow [2023-08-30 10:01:36,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:01:36,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:01:36,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 864 transitions. [2023-08-30 10:01:36,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48 [2023-08-30 10:01:36,023 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 864 transitions. [2023-08-30 10:01:36,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 864 transitions. [2023-08-30 10:01:36,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:01:36,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 864 transitions. [2023-08-30 10:01:36,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:36,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 450.0) internal successors, (2250), 5 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:36,029 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 450.0) internal successors, (2250), 5 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:36,030 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 236 flow. Second operand 4 states and 864 transitions. [2023-08-30 10:01:36,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 45 transitions, 210 flow [2023-08-30 10:01:36,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 200 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 10:01:36,032 INFO L231 Difference]: Finished difference. Result has 35 places, 19 transitions, 63 flow [2023-08-30 10:01:36,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=450, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=63, PETRI_PLACES=35, PETRI_TRANSITIONS=19} [2023-08-30 10:01:36,032 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -37 predicate places. [2023-08-30 10:01:36,033 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 63 flow [2023-08-30 10:01:36,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 208.42857142857142) internal successors, (1459), 7 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:36,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:36,034 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:01:36,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 10:01:36,240 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 10:01:36,241 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:01:36,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:36,241 INFO L85 PathProgramCache]: Analyzing trace with hash -933123797, now seen corresponding path program 1 times [2023-08-30 10:01:36,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:36,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978419088] [2023-08-30 10:01:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:36,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:36,359 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 10:01:36,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:01:36,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978419088] [2023-08-30 10:01:36,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978419088] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:01:36,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563660107] [2023-08-30 10:01:36,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:36,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:01:36,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:01:36,362 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 10:01:36,364 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 10:01:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:36,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 10:01:36,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:01:36,514 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:01:36,515 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 10:01:36,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:01:36,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:01:36,727 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 10:01:36,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:01:36,832 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 10:01:36,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563660107] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:01:36,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:01:36,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-30 10:01:36,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129385773] [2023-08-30 10:01:36,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:01:36,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 10:01:36,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:01:36,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 10:01:36,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-30 10:01:37,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 450 [2023-08-30 10:01:37,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions, 63 flow. Second operand has 11 states, 11 states have (on average 179.45454545454547) internal successors, (1974), 11 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:37,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:01:37,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 450 [2023-08-30 10:01:37,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:01:37,273 INFO L130 PetriNetUnfolder]: 17/62 cut-off events. [2023-08-30 10:01:37,273 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 10:01:37,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 62 events. 17/62 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 137 event pairs, 3 based on Foata normal form. 1/59 useless extension candidates. Maximal degree in co-relation 156. Up to 23 conditions per place. [2023-08-30 10:01:37,273 INFO L137 encePairwiseOnDemand]: 443/450 looper letters, 14 selfloop transitions, 6 changer transitions 0/22 dead transitions. [2023-08-30 10:01:37,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 115 flow [2023-08-30 10:01:37,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:01:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:01:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 906 transitions. [2023-08-30 10:01:37,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4026666666666667 [2023-08-30 10:01:37,276 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 906 transitions. [2023-08-30 10:01:37,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 906 transitions. [2023-08-30 10:01:37,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:01:37,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 906 transitions. [2023-08-30 10:01:37,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:37,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 450.0) internal successors, (2700), 6 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:37,284 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 450.0) internal successors, (2700), 6 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:37,284 INFO L175 Difference]: Start difference. First operand has 35 places, 19 transitions, 63 flow. Second operand 5 states and 906 transitions. [2023-08-30 10:01:37,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 115 flow [2023-08-30 10:01:37,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 22 transitions, 109 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:01:37,285 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 72 flow [2023-08-30 10:01:37,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=450, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=72, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-30 10:01:37,286 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -44 predicate places. [2023-08-30 10:01:37,286 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 72 flow [2023-08-30 10:01:37,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 179.45454545454547) internal successors, (1974), 11 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:37,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:37,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:01:37,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 10:01:37,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 10:01:37,493 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:01:37,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:37,493 INFO L85 PathProgramCache]: Analyzing trace with hash 872250925, now seen corresponding path program 1 times [2023-08-30 10:01:37,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:37,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880029537] [2023-08-30 10:01:37,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:37,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:37,690 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 10:01:37,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:01:37,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880029537] [2023-08-30 10:01:37,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880029537] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:01:37,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:01:37,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:01:37,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784310275] [2023-08-30 10:01:37,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:01:37,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:01:37,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:01:37,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:01:37,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:01:37,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 450 [2023-08-30 10:01:37,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 72 flow. Second operand has 7 states, 7 states have (on average 195.57142857142858) internal successors, (1369), 7 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:37,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:01:37,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 450 [2023-08-30 10:01:37,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:01:38,032 INFO L130 PetriNetUnfolder]: 15/63 cut-off events. [2023-08-30 10:01:38,032 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-30 10:01:38,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 63 events. 15/63 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 154 event pairs, 0 based on Foata normal form. 3/66 useless extension candidates. Maximal degree in co-relation 171. Up to 18 conditions per place. [2023-08-30 10:01:38,032 INFO L137 encePairwiseOnDemand]: 443/450 looper letters, 17 selfloop transitions, 10 changer transitions 0/29 dead transitions. [2023-08-30 10:01:38,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 156 flow [2023-08-30 10:01:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:01:38,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:01:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1386 transitions. [2023-08-30 10:01:38,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2023-08-30 10:01:38,036 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1386 transitions. [2023-08-30 10:01:38,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1386 transitions. [2023-08-30 10:01:38,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:01:38,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1386 transitions. [2023-08-30 10:01:38,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:38,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 450.0) internal successors, (3600), 8 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:38,046 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 450.0) internal successors, (3600), 8 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:38,046 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 72 flow. Second operand 7 states and 1386 transitions. [2023-08-30 10:01:38,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 29 transitions, 156 flow [2023-08-30 10:01:38,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 141 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 10:01:38,050 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 109 flow [2023-08-30 10:01:38,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=450, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=109, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2023-08-30 10:01:38,051 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -38 predicate places. [2023-08-30 10:01:38,051 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 109 flow [2023-08-30 10:01:38,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 195.57142857142858) internal successors, (1369), 7 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:38,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:38,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:01:38,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 10:01:38,053 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:01:38,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:38,053 INFO L85 PathProgramCache]: Analyzing trace with hash 872250958, now seen corresponding path program 1 times [2023-08-30 10:01:38,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:38,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748246968] [2023-08-30 10:01:38,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:38,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:38,154 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 10:01:38,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:01:38,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748246968] [2023-08-30 10:01:38,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748246968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:01:38,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:01:38,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:01:38,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701901389] [2023-08-30 10:01:38,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:01:38,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:01:38,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:01:38,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:01:38,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:01:38,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 450 [2023-08-30 10:01:38,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 200.75) internal successors, (803), 4 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:38,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:01:38,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 450 [2023-08-30 10:01:38,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:01:38,277 INFO L130 PetriNetUnfolder]: 13/63 cut-off events. [2023-08-30 10:01:38,278 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-08-30 10:01:38,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 63 events. 13/63 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 5 based on Foata normal form. 4/66 useless extension candidates. Maximal degree in co-relation 191. Up to 29 conditions per place. [2023-08-30 10:01:38,278 INFO L137 encePairwiseOnDemand]: 445/450 looper letters, 16 selfloop transitions, 6 changer transitions 2/26 dead transitions. [2023-08-30 10:01:38,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 26 transitions, 169 flow [2023-08-30 10:01:38,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:01:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:01:38,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1012 transitions. [2023-08-30 10:01:38,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497777777777778 [2023-08-30 10:01:38,282 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1012 transitions. [2023-08-30 10:01:38,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1012 transitions. [2023-08-30 10:01:38,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:01:38,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1012 transitions. [2023-08-30 10:01:38,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.4) internal successors, (1012), 5 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:38,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 450.0) internal successors, (2700), 6 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:38,289 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 450.0) internal successors, (2700), 6 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:38,289 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 109 flow. Second operand 5 states and 1012 transitions. [2023-08-30 10:01:38,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 26 transitions, 169 flow [2023-08-30 10:01:38,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 151 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-30 10:01:38,291 INFO L231 Difference]: Finished difference. Result has 36 places, 20 transitions, 107 flow [2023-08-30 10:01:38,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=450, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=36, PETRI_TRANSITIONS=20} [2023-08-30 10:01:38,291 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -36 predicate places. [2023-08-30 10:01:38,292 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 20 transitions, 107 flow [2023-08-30 10:01:38,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 200.75) internal successors, (803), 4 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:38,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:38,292 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:01:38,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:01:38,293 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:01:38,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:38,293 INFO L85 PathProgramCache]: Analyzing trace with hash -2095775579, now seen corresponding path program 1 times [2023-08-30 10:01:38,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:38,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534963242] [2023-08-30 10:01:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:38,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:38,528 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 10:01:38,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:01:38,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534963242] [2023-08-30 10:01:38,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534963242] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:01:38,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781858806] [2023-08-30 10:01:38,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:38,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:01:38,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:01:38,530 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 10:01:38,534 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 10:01:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:38,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 10:01:38,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:01:38,649 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:01:38,649 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 10:01:38,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:01:38,795 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 28 treesize of output 16 [2023-08-30 10:01:38,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:01:38,858 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 10:01:38,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:01:38,877 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_114 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_114) |c_t1_funThread1of1ForFork0_munge_~v#1.base|) |c_t1_funThread1of1ForFork0_munge_~v#1.offset|) 2147483648))) is different from false [2023-08-30 10:01:38,899 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 Int) (v_ArrVal_114 (Array Int Int))) (or (< v_ArrVal_112 (+ |c_t1_funThread1of1ForFork0_munge_#t~post7#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t1_funThread1of1ForFork0_munge_~v#1.base| (store (select |c_#memory_int| |c_t1_funThread1of1ForFork0_munge_~v#1.base|) |c_t1_funThread1of1ForFork0_munge_~v#1.offset| v_ArrVal_112)) |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_114) |c_t1_funThread1of1ForFork0_munge_~v#1.base|) |c_t1_funThread1of1ForFork0_munge_~v#1.offset|) 2147483648)))) is different from false [2023-08-30 10:01:38,916 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 Int) (v_ArrVal_114 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_t1_funThread1of1ForFork0_munge_~v#1.base|))) (or (< v_ArrVal_112 (+ (select .cse0 |c_t1_funThread1of1ForFork0_munge_~v#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t1_funThread1of1ForFork0_munge_~v#1.base| (store .cse0 |c_t1_funThread1of1ForFork0_munge_~v#1.offset| v_ArrVal_112)) |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_114) |c_t1_funThread1of1ForFork0_munge_~v#1.base|) |c_t1_funThread1of1ForFork0_munge_~v#1.offset|) 2147483648))))) is different from false [2023-08-30 10:01:38,967 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 Int) (v_ArrVal_114 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#global1~0.base|))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#global1~0.base| (store .cse0 |c_~#global1~0.offset| v_ArrVal_112)) |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_114) |c_~#global1~0.base|) |c_~#global1~0.offset|) 2147483648)) (< v_ArrVal_112 (+ (select .cse0 |c_~#global1~0.offset|) 1))))) is different from false [2023-08-30 10:01:38,990 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 Int) (v_ArrVal_111 (Array Int Int)) (v_ArrVal_114 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_111))) (let ((.cse1 (select .cse0 |c_~#global1~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#global1~0.base| (store .cse1 |c_~#global1~0.offset| v_ArrVal_112)) |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_114) |c_~#global1~0.base|) |c_~#global1~0.offset|) 2147483648)) (< v_ArrVal_112 (+ (select .cse1 |c_~#global1~0.offset|) 1)))))) is different from false [2023-08-30 10:01:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:01:38,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781858806] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:01:38,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:01:38,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 16 [2023-08-30 10:01:38,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141217876] [2023-08-30 10:01:38,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:01:38,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 10:01:38,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:01:38,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 10:01:38,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=123, Unknown=5, NotChecked=130, Total=306 [2023-08-30 10:01:39,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 450 [2023-08-30 10:01:39,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 20 transitions, 107 flow. Second operand has 18 states, 18 states have (on average 166.16666666666666) internal successors, (2991), 18 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:39,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:01:39,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 450 [2023-08-30 10:01:39,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:01:39,284 INFO L130 PetriNetUnfolder]: 11/57 cut-off events. [2023-08-30 10:01:39,285 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-08-30 10:01:39,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 57 events. 11/57 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 147 event pairs, 4 based on Foata normal form. 2/58 useless extension candidates. Maximal degree in co-relation 178. Up to 21 conditions per place. [2023-08-30 10:01:39,285 INFO L137 encePairwiseOnDemand]: 445/450 looper letters, 12 selfloop transitions, 4 changer transitions 3/21 dead transitions. [2023-08-30 10:01:39,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 21 transitions, 138 flow [2023-08-30 10:01:39,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:01:39,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:01:39,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1002 transitions. [2023-08-30 10:01:39,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3711111111111111 [2023-08-30 10:01:39,290 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1002 transitions. [2023-08-30 10:01:39,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1002 transitions. [2023-08-30 10:01:39,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:01:39,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1002 transitions. [2023-08-30 10:01:39,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:39,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 450.0) internal successors, (3150), 7 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:39,297 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 450.0) internal successors, (3150), 7 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:39,297 INFO L175 Difference]: Start difference. First operand has 36 places, 20 transitions, 107 flow. Second operand 6 states and 1002 transitions. [2023-08-30 10:01:39,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 21 transitions, 138 flow [2023-08-30 10:01:39,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 21 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:01:39,299 INFO L231 Difference]: Finished difference. Result has 34 places, 15 transitions, 73 flow [2023-08-30 10:01:39,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=450, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=73, PETRI_PLACES=34, PETRI_TRANSITIONS=15} [2023-08-30 10:01:39,300 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -38 predicate places. [2023-08-30 10:01:39,300 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 15 transitions, 73 flow [2023-08-30 10:01:39,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 166.16666666666666) internal successors, (2991), 18 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:39,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:39,303 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:01:39,315 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 10:01:39,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:01:39,516 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:01:39,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:39,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1774382180, now seen corresponding path program 1 times [2023-08-30 10:01:39,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:39,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663761653] [2023-08-30 10:01:39,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:39,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:39,721 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 10:01:39,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:01:39,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663761653] [2023-08-30 10:01:39,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663761653] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:01:39,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481246360] [2023-08-30 10:01:39,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:39,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:01:39,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:01:39,724 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 10:01:39,756 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 10:01:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:39,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:01:39,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:01:39,842 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:01:39,842 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 10:01:39,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:01:39,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:01:39,948 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 10:01:39,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:01:39,964 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_149 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_149) |c_t1_funThread1of1ForFork0_munge_~v#1.base|) |c_t1_funThread1of1ForFork0_munge_~v#1.offset|) 2147483649)) is different from false [2023-08-30 10:01:39,978 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:01:39,979 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 18 treesize of output 19 [2023-08-30 10:01:39,991 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 31 treesize of output 23 [2023-08-30 10:01:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:01:40,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481246360] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:01:40,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:01:40,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-30 10:01:40,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950616383] [2023-08-30 10:01:40,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:01:40,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 10:01:40,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:01:40,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 10:01:40,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=137, Unknown=1, NotChecked=24, Total=210 [2023-08-30 10:01:40,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 450 [2023-08-30 10:01:40,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 15 transitions, 73 flow. Second operand has 15 states, 15 states have (on average 166.2) internal successors, (2493), 15 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:40,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:01:40,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 450 [2023-08-30 10:01:40,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:01:40,130 INFO L130 PetriNetUnfolder]: 9/44 cut-off events. [2023-08-30 10:01:40,130 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-08-30 10:01:40,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 44 events. 9/44 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 2 based on Foata normal form. 1/45 useless extension candidates. Maximal degree in co-relation 137. Up to 17 conditions per place. [2023-08-30 10:01:40,131 INFO L137 encePairwiseOnDemand]: 445/450 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2023-08-30 10:01:40,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 17 transitions, 105 flow [2023-08-30 10:01:40,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:01:40,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:01:40,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1000 transitions. [2023-08-30 10:01:40,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2023-08-30 10:01:40,135 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1000 transitions. [2023-08-30 10:01:40,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1000 transitions. [2023-08-30 10:01:40,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:01:40,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1000 transitions. [2023-08-30 10:01:40,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 166.66666666666666) internal successors, (1000), 6 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 10:01:40,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 450.0) internal successors, (3150), 7 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:40,143 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 450.0) internal successors, (3150), 7 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:40,143 INFO L175 Difference]: Start difference. First operand has 34 places, 15 transitions, 73 flow. Second operand 6 states and 1000 transitions. [2023-08-30 10:01:40,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 17 transitions, 105 flow [2023-08-30 10:01:40,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 17 transitions, 84 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-30 10:01:40,144 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-08-30 10:01:40,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=450, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-08-30 10:01:40,145 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -45 predicate places. [2023-08-30 10:01:40,145 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-08-30 10:01:40,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 166.2) internal successors, (2493), 15 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:40,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2023-08-30 10:01:40,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2023-08-30 10:01:40,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2023-08-30 10:01:40,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2023-08-30 10:01:40,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2023-08-30 10:01:40,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2023-08-30 10:01:40,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2023-08-30 10:01:40,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2023-08-30 10:01:40,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2023-08-30 10:01:40,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2023-08-30 10:01:40,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2023-08-30 10:01:40,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2023-08-30 10:01:40,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2023-08-30 10:01:40,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2023-08-30 10:01:40,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2023-08-30 10:01:40,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2023-08-30 10:01:40,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2023-08-30 10:01:40,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2023-08-30 10:01:40,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2023-08-30 10:01:40,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2023-08-30 10:01:40,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2023-08-30 10:01:40,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2023-08-30 10:01:40,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2023-08-30 10:01:40,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2023-08-30 10:01:40,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 10:01:40,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:01:40,359 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:01:40,361 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,SAFE,SAFE (1/2) [2023-08-30 10:01:40,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 245 transitions, 512 flow [2023-08-30 10:01:40,417 INFO L130 PetriNetUnfolder]: 58/437 cut-off events. [2023-08-30 10:01:40,417 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 10:01:40,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 437 events. 58/437 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1925 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2023-08-30 10:01:40,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 245 transitions, 512 flow [2023-08-30 10:01:40,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 245 transitions, 512 flow [2023-08-30 10:01:40,424 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:01:40,424 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 245 transitions, 512 flow [2023-08-30 10:01:40,424 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 245 transitions, 512 flow [2023-08-30 10:01:40,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 245 transitions, 512 flow [2023-08-30 10:01:40,474 INFO L130 PetriNetUnfolder]: 58/437 cut-off events. [2023-08-30 10:01:40,474 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 10:01:40,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 437 events. 58/437 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1925 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2023-08-30 10:01:40,490 INFO L119 LiptonReduction]: Number of co-enabled transitions 25704 [2023-08-30 10:01:44,853 INFO L134 LiptonReduction]: Checked pairs total: 47623 [2023-08-30 10:01:44,854 INFO L136 LiptonReduction]: Total number of compositions: 204 [2023-08-30 10:01:44,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:01:44,855 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;@5a851718, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:01:44,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-30 10:01:44,859 INFO L130 PetriNetUnfolder]: 4/38 cut-off events. [2023-08-30 10:01:44,859 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:01:44,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:44,859 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 10:01:44,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:01:44,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:44,860 INFO L85 PathProgramCache]: Analyzing trace with hash 852584476, now seen corresponding path program 1 times [2023-08-30 10:01:44,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:44,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395503735] [2023-08-30 10:01:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:44,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:01:44,878 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:01:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:01:44,903 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:01:44,903 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:01:44,903 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-30 10:01:44,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-30 10:01:44,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 10:01:44,904 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:01:44,904 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-30 10:01:44,905 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:01:44,905 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:01:44,960 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-30 10:01:44,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 387 transitions, 822 flow [2023-08-30 10:01:45,150 INFO L130 PetriNetUnfolder]: 197/1311 cut-off events. [2023-08-30 10:01:45,151 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-30 10:01:45,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 1311 events. 197/1311 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8239 event pairs, 1 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 778. Up to 32 conditions per place. [2023-08-30 10:01:45,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 336 places, 387 transitions, 822 flow [2023-08-30 10:01:45,193 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 336 places, 387 transitions, 822 flow [2023-08-30 10:01:45,193 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:01:45,194 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 336 places, 387 transitions, 822 flow [2023-08-30 10:01:45,194 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 336 places, 387 transitions, 822 flow [2023-08-30 10:01:45,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 387 transitions, 822 flow [2023-08-30 10:01:45,374 INFO L130 PetriNetUnfolder]: 197/1311 cut-off events. [2023-08-30 10:01:45,375 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-30 10:01:45,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 1311 events. 197/1311 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8239 event pairs, 1 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 778. Up to 32 conditions per place. [2023-08-30 10:01:45,473 INFO L119 LiptonReduction]: Number of co-enabled transitions 91120 [2023-08-30 10:01:50,534 INFO L134 LiptonReduction]: Checked pairs total: 196390 [2023-08-30 10:01:50,534 INFO L136 LiptonReduction]: Total number of compositions: 315 [2023-08-30 10:01:50,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:01:50,536 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;@5a851718, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:01:50,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-30 10:01:50,538 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2023-08-30 10:01:50,538 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:01:50,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:50,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:01:50,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-08-30 10:01:50,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:50,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1938869721, now seen corresponding path program 1 times [2023-08-30 10:01:50,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:50,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100550532] [2023-08-30 10:01:50,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:50,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:50,564 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 10:01:50,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:01:50,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100550532] [2023-08-30 10:01:50,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100550532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:01:50,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:01:50,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:01:50,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379114110] [2023-08-30 10:01:50,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:01:50,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:01:50,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:01:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:01:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:01:50,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 702 [2023-08-30 10:01:50,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 164 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:50,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:01:50,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 702 [2023-08-30 10:01:50,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand