./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_22-nocollapse.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/09-regions_22-nocollapse.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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --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 09:37:25,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 09:37:25,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 09:37:25,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 09:37:25,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 09:37:25,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 09:37:25,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 09:37:25,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 09:37:25,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 09:37:25,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 09:37:25,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 09:37:25,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 09:37:25,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 09:37:25,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 09:37:25,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 09:37:25,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 09:37:25,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 09:37:25,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 09:37:25,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 09:37:25,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 09:37:25,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 09:37:25,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 09:37:25,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 09:37:25,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 09:37:25,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 09:37:25,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 09:37:25,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 09:37:25,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 09:37:25,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 09:37:25,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 09:37:25,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 09:37:25,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 09:37:25,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 09:37:25,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 09:37:25,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 09:37:25,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 09:37:25,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 09:37:25,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 09:37:25,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 09:37:25,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 09:37:25,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 09:37:25,415 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 09:37:25,446 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 09:37:25,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 09:37:25,448 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 09:37:25,448 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 09:37:25,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 09:37:25,449 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 09:37:25,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 09:37:25,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 09:37:25,450 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 09:37:25,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 09:37:25,451 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 09:37:25,451 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 09:37:25,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 09:37:25,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 09:37:25,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 09:37:25,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 09:37:25,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 09:37:25,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 09:37:25,452 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 09:37:25,453 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 09:37:25,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 09:37:25,453 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 09:37:25,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 09:37:25,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 09:37:25,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 09:37:25,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 09:37:25,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:37:25,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 09:37:25,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 09:37:25,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 09:37:25,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 09:37:25,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 09:37:25,455 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 09:37:25,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 09:37:25,455 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 09:37:25,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 09:37:25,456 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 09:37:25,456 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 09:37:25,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 09:37:25,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 09:37:25,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 09:37:25,788 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 09:37:25,788 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 09:37:25,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_22-nocollapse.i [2023-08-30 09:37:26,978 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 09:37:27,328 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 09:37:27,329 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_22-nocollapse.i [2023-08-30 09:37:27,347 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da422726a/b530f76b9feb4e5e95b61e62b3eb4133/FLAG60b5b929d [2023-08-30 09:37:27,361 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da422726a/b530f76b9feb4e5e95b61e62b3eb4133 [2023-08-30 09:37:27,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 09:37:27,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 09:37:27,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 09:37:27,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 09:37:27,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 09:37:27,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:37:27" (1/1) ... [2023-08-30 09:37:27,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4674959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:37:27, skipping insertion in model container [2023-08-30 09:37:27,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:37:27" (1/1) ... [2023-08-30 09:37:27,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 09:37:27,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 09:37:27,752 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 09:37:27,752 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 09:37:27,753 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 09:37:27,753 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 09:37:27,784 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:37:27,798 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 09:37:27,825 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 09:37:27,825 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 09:37:27,825 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 09:37:27,826 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 09:37:27,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:37:27,899 INFO L208 MainTranslator]: Completed translation [2023-08-30 09:37:27,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:37:27 WrapperNode [2023-08-30 09:37:27,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 09:37:27,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 09:37:27,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 09:37:27,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 09:37:27,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:37:27" (1/1) ... [2023-08-30 09:37:27,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:37:27" (1/1) ... [2023-08-30 09:37:27,946 INFO L138 Inliner]: procedures = 272, calls = 35, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 139 [2023-08-30 09:37:27,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 09:37:27,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 09:37:27,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 09:37:27,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 09:37:27,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:37:27" (1/1) ... [2023-08-30 09:37:27,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:37:27" (1/1) ... [2023-08-30 09:37:27,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:37:27" (1/1) ... [2023-08-30 09:37:27,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:37:27" (1/1) ... [2023-08-30 09:37:27,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:37:27" (1/1) ... [2023-08-30 09:37:27,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:37:27" (1/1) ... [2023-08-30 09:37:27,974 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:37:27" (1/1) ... [2023-08-30 09:37:27,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:37:27" (1/1) ... [2023-08-30 09:37:27,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 09:37:27,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 09:37:27,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 09:37:27,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 09:37:27,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:37:27" (1/1) ... [2023-08-30 09:37:27,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:37:27,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:37:28,009 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 09:37:28,013 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 09:37:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-08-30 09:37:28,042 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-08-30 09:37:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 09:37:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 09:37:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 09:37:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 09:37:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 09:37:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 09:37:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 09:37:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 09:37:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 09:37:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 09:37:28,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 09:37:28,044 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 09:37:28,177 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 09:37:28,179 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 09:37:28,539 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 09:37:28,546 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 09:37:28,551 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 09:37:28,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:37:28 BoogieIcfgContainer [2023-08-30 09:37:28,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 09:37:28,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 09:37:28,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 09:37:28,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 09:37:28,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:37:27" (1/3) ... [2023-08-30 09:37:28,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e05be9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:37:28, skipping insertion in model container [2023-08-30 09:37:28,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:37:27" (2/3) ... [2023-08-30 09:37:28,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e05be9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:37:28, skipping insertion in model container [2023-08-30 09:37:28,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:37:28" (3/3) ... [2023-08-30 09:37:28,562 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2023-08-30 09:37:28,569 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 09:37:28,578 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 09:37:28,578 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 09:37:28,578 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 09:37:28,714 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 09:37:28,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 203 transitions, 416 flow [2023-08-30 09:37:28,839 INFO L130 PetriNetUnfolder]: 15/201 cut-off events. [2023-08-30 09:37:28,839 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:37:28,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 201 events. 15/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 498 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 144. Up to 2 conditions per place. [2023-08-30 09:37:28,851 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 203 transitions, 416 flow [2023-08-30 09:37:28,857 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 201 transitions, 408 flow [2023-08-30 09:37:28,860 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:37:28,870 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 201 transitions, 408 flow [2023-08-30 09:37:28,872 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 201 transitions, 408 flow [2023-08-30 09:37:28,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 201 transitions, 408 flow [2023-08-30 09:37:28,913 INFO L130 PetriNetUnfolder]: 15/201 cut-off events. [2023-08-30 09:37:28,913 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:37:28,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 201 events. 15/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 498 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 144. Up to 2 conditions per place. [2023-08-30 09:37:28,918 INFO L119 LiptonReduction]: Number of co-enabled transitions 7154 [2023-08-30 09:38:02,572 WARN L222 SmtUtils]: Spent 12.91s on a formula simplification. DAG size of input: 181 DAG size of output: 179 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:38:08,058 WARN L222 SmtUtils]: Spent 5.48s on a formula simplification that was a NOOP. DAG size: 177 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:38:19,158 WARN L222 SmtUtils]: Spent 11.10s on a formula simplification. DAG size of input: 181 DAG size of output: 179 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:38:25,101 WARN L222 SmtUtils]: Spent 5.94s on a formula simplification that was a NOOP. DAG size: 177 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:38:38,498 WARN L222 SmtUtils]: Spent 13.30s on a formula simplification. DAG size of input: 182 DAG size of output: 181 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:38:43,780 WARN L222 SmtUtils]: Spent 5.28s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:38:50,135 WARN L222 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:38:54,294 INFO L134 LiptonReduction]: Checked pairs total: 6912 [2023-08-30 09:38:54,295 INFO L136 LiptonReduction]: Total number of compositions: 210 [2023-08-30 09:38:54,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:38:54,310 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;@1b578581, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:38:54,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 09:38:54,315 INFO L130 PetriNetUnfolder]: 2/6 cut-off events. [2023-08-30 09:38:54,316 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:38:54,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:38:54,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 09:38:54,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:38:54,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:38:54,321 INFO L85 PathProgramCache]: Analyzing trace with hash 688055, now seen corresponding path program 1 times [2023-08-30 09:38:54,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:38:54,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906709787] [2023-08-30 09:38:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:38:54,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:38:54,421 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:38:54,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809238809] [2023-08-30 09:38:54,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:38:54,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:38:54,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:38:54,429 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 09:38:54,454 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 09:38:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:38:54,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:38:54,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:38:54,586 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 09:38:54,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:38:54,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:38:54,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906709787] [2023-08-30 09:38:54,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:38:54,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809238809] [2023-08-30 09:38:54,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809238809] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:38:54,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:38:54,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:38:54,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629377557] [2023-08-30 09:38:54,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:38:54,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:38:54,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:38:54,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:38:54,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:38:54,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 413 [2023-08-30 09:38:54,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:54,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:38:54,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 413 [2023-08-30 09:38:54,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:38:55,151 INFO L130 PetriNetUnfolder]: 436/710 cut-off events. [2023-08-30 09:38:55,152 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 09:38:55,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 710 events. 436/710 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2745 event pairs, 340 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 1412. Up to 706 conditions per place. [2023-08-30 09:38:55,164 INFO L137 encePairwiseOnDemand]: 404/413 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-30 09:38:55,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 174 flow [2023-08-30 09:38:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:38:55,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:38:55,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2023-08-30 09:38:55,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48991121872477805 [2023-08-30 09:38:55,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2023-08-30 09:38:55,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2023-08-30 09:38:55,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:38:55,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2023-08-30 09:38:55,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:55,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:55,208 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:55,210 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 84 flow. Second operand 3 states and 607 transitions. [2023-08-30 09:38:55,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 174 flow [2023-08-30 09:38:55,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:38:55,215 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 110 flow [2023-08-30 09:38:55,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-08-30 09:38:55,222 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-30 09:38:55,222 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 110 flow [2023-08-30 09:38:55,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:55,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:38:55,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 09:38:55,232 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 09:38:55,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-08-30 09:38:55,431 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:38:55,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:38:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash 688179, now seen corresponding path program 1 times [2023-08-30 09:38:55,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:38:55,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814951157] [2023-08-30 09:38:55,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:38:55,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:38:55,503 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:38:55,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1211045968] [2023-08-30 09:38:55,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:38:55,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:38:55,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:38:55,529 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 09:38:55,532 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 09:38:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:38:55,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:38:55,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:38:55,678 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 09:38:55,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:38:55,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:38:55,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814951157] [2023-08-30 09:38:55,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:38:55,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211045968] [2023-08-30 09:38:55,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211045968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:38:55,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:38:55,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:38:55,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024058368] [2023-08-30 09:38:55,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:38:55,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:38:55,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:38:55,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:38:55,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:38:55,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 413 [2023-08-30 09:38:55,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:55,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:38:55,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 413 [2023-08-30 09:38:55,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:38:55,901 INFO L130 PetriNetUnfolder]: 435/708 cut-off events. [2023-08-30 09:38:55,901 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 09:38:55,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 708 events. 435/708 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2738 event pairs, 340 based on Foata normal form. 2/430 useless extension candidates. Maximal degree in co-relation 1438. Up to 707 conditions per place. [2023-08-30 09:38:55,906 INFO L137 encePairwiseOnDemand]: 411/413 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 09:38:55,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 180 flow [2023-08-30 09:38:55,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:38:55,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:38:55,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2023-08-30 09:38:55,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48668280871670705 [2023-08-30 09:38:55,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2023-08-30 09:38:55,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2023-08-30 09:38:55,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:38:55,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2023-08-30 09:38:55,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:55,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:55,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:55,916 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 110 flow. Second operand 3 states and 603 transitions. [2023-08-30 09:38:55,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 180 flow [2023-08-30 09:38:55,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:38:55,919 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 103 flow [2023-08-30 09:38:55,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-08-30 09:38:55,922 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-30 09:38:55,922 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 103 flow [2023-08-30 09:38:55,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:55,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:38:55,923 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-30 09:38:55,935 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 09:38:56,130 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,SelfDestructingSolverStorable1 [2023-08-30 09:38:56,130 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:38:56,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:38:56,131 INFO L85 PathProgramCache]: Analyzing trace with hash 661349608, now seen corresponding path program 1 times [2023-08-30 09:38:56,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:38:56,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819785266] [2023-08-30 09:38:56,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:38:56,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:38:56,186 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:38:56,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370527836] [2023-08-30 09:38:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:38:56,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:38:56,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:38:56,193 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 09:38:56,210 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 09:38:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:38:56,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-30 09:38:56,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:38:56,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:38:56,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:38:56,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:38:56,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819785266] [2023-08-30 09:38:56,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:38:56,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370527836] [2023-08-30 09:38:56,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370527836] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:38:56,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:38:56,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:38:56,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044241889] [2023-08-30 09:38:56,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:38:56,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:38:56,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:38:56,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:38:56,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:38:56,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 413 [2023-08-30 09:38:56,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:56,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:38:56,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 413 [2023-08-30 09:38:56,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:38:56,572 INFO L130 PetriNetUnfolder]: 435/712 cut-off events. [2023-08-30 09:38:56,572 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:38:56,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 712 events. 435/712 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2784 event pairs, 340 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 1454. Up to 709 conditions per place. [2023-08-30 09:38:56,576 INFO L137 encePairwiseOnDemand]: 408/413 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-30 09:38:56,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 197 flow [2023-08-30 09:38:56,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:38:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:38:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2023-08-30 09:38:56,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48991121872477805 [2023-08-30 09:38:56,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2023-08-30 09:38:56,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2023-08-30 09:38:56,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:38:56,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2023-08-30 09:38:56,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:56,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:56,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:56,594 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 103 flow. Second operand 3 states and 607 transitions. [2023-08-30 09:38:56,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 197 flow [2023-08-30 09:38:56,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 197 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:38:56,595 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 124 flow [2023-08-30 09:38:56,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-30 09:38:56,596 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-08-30 09:38:56,596 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 124 flow [2023-08-30 09:38:56,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:56,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:38:56,597 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 09:38:56,607 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 09:38:56,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:38:56,808 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:38:56,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:38:56,808 INFO L85 PathProgramCache]: Analyzing trace with hash -972591499, now seen corresponding path program 1 times [2023-08-30 09:38:56,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:38:56,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272417143] [2023-08-30 09:38:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:38:56,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:38:56,839 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:38:56,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540886041] [2023-08-30 09:38:56,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:38:56,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:38:56,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:38:56,841 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 09:38:56,866 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 09:38:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:38:56,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:38:56,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:38:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:38:57,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:38:57,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:38:57,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:38:57,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272417143] [2023-08-30 09:38:57,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:38:57,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540886041] [2023-08-30 09:38:57,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540886041] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:38:57,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 09:38:57,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-30 09:38:57,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960967821] [2023-08-30 09:38:57,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 09:38:57,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 09:38:57,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:38:57,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 09:38:57,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 09:38:57,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 413 [2023-08-30 09:38:57,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:57,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:38:57,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 413 [2023-08-30 09:38:57,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:38:57,591 INFO L130 PetriNetUnfolder]: 437/724 cut-off events. [2023-08-30 09:38:57,592 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 09:38:57,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 724 events. 437/724 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2836 event pairs, 340 based on Foata normal form. 6/447 useless extension candidates. Maximal degree in co-relation 1501. Up to 707 conditions per place. [2023-08-30 09:38:57,596 INFO L137 encePairwiseOnDemand]: 406/413 looper letters, 43 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2023-08-30 09:38:57,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 270 flow [2023-08-30 09:38:57,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:38:57,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:38:57,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1180 transitions. [2023-08-30 09:38:57,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-08-30 09:38:57,600 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1180 transitions. [2023-08-30 09:38:57,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1180 transitions. [2023-08-30 09:38:57,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:38:57,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1180 transitions. [2023-08-30 09:38:57,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.66666666666666) internal successors, (1180), 6 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:57,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 413.0) internal successors, (2891), 7 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:57,608 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 413.0) internal successors, (2891), 7 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:57,608 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 124 flow. Second operand 6 states and 1180 transitions. [2023-08-30 09:38:57,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 270 flow [2023-08-30 09:38:57,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:38:57,611 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 200 flow [2023-08-30 09:38:57,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2023-08-30 09:38:57,613 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2023-08-30 09:38:57,613 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 200 flow [2023-08-30 09:38:57,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:57,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:38:57,614 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-30 09:38:57,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 09:38:57,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:38:57,820 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:38:57,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:38:57,820 INFO L85 PathProgramCache]: Analyzing trace with hash -219684824, now seen corresponding path program 2 times [2023-08-30 09:38:57,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:38:57,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577889639] [2023-08-30 09:38:57,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:38:57,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:38:57,874 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:38:57,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927379259] [2023-08-30 09:38:57,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:38:57,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:38:57,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:38:57,876 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:38:57,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 09:38:58,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 09:38:58,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:38:58,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:38:58,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:38:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-30 09:38:58,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:38:58,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:38:58,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577889639] [2023-08-30 09:38:58,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:38:58,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927379259] [2023-08-30 09:38:58,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927379259] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:38:58,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:38:58,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:38:58,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990871054] [2023-08-30 09:38:58,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:38:58,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:38:58,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:38:58,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:38:58,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:38:58,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 413 [2023-08-30 09:38:58,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:58,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:38:58,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 413 [2023-08-30 09:38:58,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:38:58,314 INFO L130 PetriNetUnfolder]: 437/722 cut-off events. [2023-08-30 09:38:58,314 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 09:38:58,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 722 events. 437/722 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2828 event pairs, 340 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1533. Up to 721 conditions per place. [2023-08-30 09:38:58,317 INFO L137 encePairwiseOnDemand]: 409/413 looper letters, 42 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-08-30 09:38:58,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 290 flow [2023-08-30 09:38:58,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:38:58,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:38:58,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2023-08-30 09:38:58,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826472962066182 [2023-08-30 09:38:58,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2023-08-30 09:38:58,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2023-08-30 09:38:58,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:38:58,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2023-08-30 09:38:58,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:58,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:58,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:58,325 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 200 flow. Second operand 3 states and 598 transitions. [2023-08-30 09:38:58,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 290 flow [2023-08-30 09:38:58,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 279 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 09:38:58,328 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 202 flow [2023-08-30 09:38:58,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-08-30 09:38:58,328 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2023-08-30 09:38:58,329 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 202 flow [2023-08-30 09:38:58,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:58,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:38:58,329 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-30 09:38:58,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 09:38:58,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:38:58,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:38:58,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:38:58,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1779709491, now seen corresponding path program 3 times [2023-08-30 09:38:58,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:38:58,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186194508] [2023-08-30 09:38:58,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:38:58,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:38:58,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:38:58,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529798454] [2023-08-30 09:38:58,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 09:38:58,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:38:58,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:38:58,621 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:38:58,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 09:38:58,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 09:38:58,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:38:58,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 09:38:58,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:38:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 09:38:58,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:38:58,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:38:58,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186194508] [2023-08-30 09:38:58,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:38:58,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529798454] [2023-08-30 09:38:58,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529798454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:38:58,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:38:58,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 09:38:58,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714601724] [2023-08-30 09:38:58,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:38:58,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 09:38:58,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:38:58,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 09:38:58,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 09:38:59,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 413 [2023-08-30 09:38:59,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 184.16666666666666) internal successors, (1105), 6 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:59,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:38:59,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 413 [2023-08-30 09:38:59,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:38:59,437 INFO L130 PetriNetUnfolder]: 436/717 cut-off events. [2023-08-30 09:38:59,437 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-08-30 09:38:59,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 717 events. 436/717 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2814 event pairs, 340 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 1508. Up to 709 conditions per place. [2023-08-30 09:38:59,441 INFO L137 encePairwiseOnDemand]: 407/413 looper letters, 43 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-08-30 09:38:59,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 299 flow [2023-08-30 09:38:59,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 09:38:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 09:38:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 956 transitions. [2023-08-30 09:38:59,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.462953995157385 [2023-08-30 09:38:59,444 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 956 transitions. [2023-08-30 09:38:59,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 956 transitions. [2023-08-30 09:38:59,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:38:59,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 956 transitions. [2023-08-30 09:38:59,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 191.2) internal successors, (956), 5 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:59,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 413.0) internal successors, (2478), 6 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:59,449 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 413.0) internal successors, (2478), 6 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:59,450 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 202 flow. Second operand 5 states and 956 transitions. [2023-08-30 09:38:59,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 299 flow [2023-08-30 09:38:59,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 47 transitions, 291 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:38:59,452 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 185 flow [2023-08-30 09:38:59,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-08-30 09:38:59,455 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2023-08-30 09:38:59,456 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 185 flow [2023-08-30 09:38:59,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 184.16666666666666) internal successors, (1105), 6 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:38:59,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:38:59,456 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-30 09:38:59,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 09:38:59,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:38:59,665 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:38:59,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:38:59,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1779709523, now seen corresponding path program 1 times [2023-08-30 09:38:59,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:38:59,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081772473] [2023-08-30 09:38:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:38:59,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:38:59,739 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:38:59,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411188672] [2023-08-30 09:38:59,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:38:59,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:38:59,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:38:59,741 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:38:59,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 09:39:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:39:00,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 09:39:00,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:39:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:39:00,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:39:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:39:00,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:39:00,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081772473] [2023-08-30 09:39:00,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:39:00,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411188672] [2023-08-30 09:39:00,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411188672] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:39:00,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 09:39:00,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 09:39:00,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392386143] [2023-08-30 09:39:00,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 09:39:00,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 09:39:00,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:39:00,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 09:39:00,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 09:39:00,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 413 [2023-08-30 09:39:00,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 185 flow. Second operand has 12 states, 12 states have (on average 188.33333333333334) internal successors, (2260), 12 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:00,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:39:00,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 413 [2023-08-30 09:39:00,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:39:01,371 INFO L130 PetriNetUnfolder]: 436/735 cut-off events. [2023-08-30 09:39:01,372 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2023-08-30 09:39:01,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1610 conditions, 735 events. 436/735 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2943 event pairs, 340 based on Foata normal form. 12/470 useless extension candidates. Maximal degree in co-relation 1588. Up to 706 conditions per place. [2023-08-30 09:39:01,375 INFO L137 encePairwiseOnDemand]: 408/413 looper letters, 43 selfloop transitions, 14 changer transitions 0/57 dead transitions. [2023-08-30 09:39:01,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 57 transitions, 399 flow [2023-08-30 09:39:01,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 09:39:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 09:39:01,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2310 transitions. [2023-08-30 09:39:01,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661016949152542 [2023-08-30 09:39:01,381 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2310 transitions. [2023-08-30 09:39:01,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2310 transitions. [2023-08-30 09:39:01,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:39:01,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2310 transitions. [2023-08-30 09:39:01,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 192.5) internal successors, (2310), 12 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:01,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 413.0) internal successors, (5369), 13 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:01,402 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 413.0) internal successors, (5369), 13 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:01,402 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 185 flow. Second operand 12 states and 2310 transitions. [2023-08-30 09:39:01,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 57 transitions, 399 flow [2023-08-30 09:39:01,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 393 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 09:39:01,409 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 308 flow [2023-08-30 09:39:01,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=308, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2023-08-30 09:39:01,409 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 30 predicate places. [2023-08-30 09:39:01,409 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 308 flow [2023-08-30 09:39:01,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 188.33333333333334) internal successors, (2260), 12 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:01,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:39:01,410 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2023-08-30 09:39:01,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 09:39:01,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:39:01,619 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:39:01,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:39:01,619 INFO L85 PathProgramCache]: Analyzing trace with hash 126838131, now seen corresponding path program 2 times [2023-08-30 09:39:01,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:39:01,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737522437] [2023-08-30 09:39:01,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:39:01,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:39:01,729 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:39:01,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071761015] [2023-08-30 09:39:01,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:39:01,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:39:01,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:39:01,730 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:39:01,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 09:39:02,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 09:39:02,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:39:02,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 09:39:02,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:39:02,656 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:39:02,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:39:02,846 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:39:02,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:39:02,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737522437] [2023-08-30 09:39:02,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:39:02,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071761015] [2023-08-30 09:39:02,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071761015] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:39:02,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 09:39:02,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-30 09:39:02,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223483679] [2023-08-30 09:39:02,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 09:39:02,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 09:39:02,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:39:02,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 09:39:02,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-30 09:39:02,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 413 [2023-08-30 09:39:03,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 308 flow. Second operand has 24 states, 24 states have (on average 188.16666666666666) internal successors, (4516), 24 states have internal predecessors, (4516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:03,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:39:03,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 413 [2023-08-30 09:39:03,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:39:04,931 INFO L130 PetriNetUnfolder]: 436/771 cut-off events. [2023-08-30 09:39:04,931 INFO L131 PetriNetUnfolder]: For 1237/1237 co-relation queries the response was YES. [2023-08-30 09:39:04,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 771 events. 436/771 cut-off events. For 1237/1237 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3029 event pairs, 340 based on Foata normal form. 24/518 useless extension candidates. Maximal degree in co-relation 1853. Up to 706 conditions per place. [2023-08-30 09:39:04,935 INFO L137 encePairwiseOnDemand]: 408/413 looper letters, 55 selfloop transitions, 26 changer transitions 0/81 dead transitions. [2023-08-30 09:39:04,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 81 transitions, 776 flow [2023-08-30 09:39:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 09:39:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 09:39:04,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4590 transitions. [2023-08-30 09:39:04,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46307506053268765 [2023-08-30 09:39:04,946 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4590 transitions. [2023-08-30 09:39:04,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4590 transitions. [2023-08-30 09:39:04,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:39:04,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4590 transitions. [2023-08-30 09:39:04,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 191.25) internal successors, (4590), 24 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:04,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 413.0) internal successors, (10325), 25 states have internal predecessors, (10325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:04,988 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 413.0) internal successors, (10325), 25 states have internal predecessors, (10325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:04,988 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 308 flow. Second operand 24 states and 4590 transitions. [2023-08-30 09:39:04,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 81 transitions, 776 flow [2023-08-30 09:39:04,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 81 transitions, 708 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-30 09:39:04,993 INFO L231 Difference]: Finished difference. Result has 102 places, 63 transitions, 521 flow [2023-08-30 09:39:04,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=521, PETRI_PLACES=102, PETRI_TRANSITIONS=63} [2023-08-30 09:39:04,993 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 62 predicate places. [2023-08-30 09:39:04,994 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 63 transitions, 521 flow [2023-08-30 09:39:04,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 188.16666666666666) internal successors, (4516), 24 states have internal predecessors, (4516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:04,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:39:04,995 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-08-30 09:39:05,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 09:39:05,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-30 09:39:05,207 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:39:05,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:39:05,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1509964723, now seen corresponding path program 3 times [2023-08-30 09:39:05,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:39:05,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007308992] [2023-08-30 09:39:05,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:39:05,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:39:05,431 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:39:05,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1053541707] [2023-08-30 09:39:05,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 09:39:05,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:39:05,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:39:05,433 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:39:05,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 09:39:06,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 09:39:06,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:39:06,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 09:39:06,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:39:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-08-30 09:39:06,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:39:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-08-30 09:39:06,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:39:06,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007308992] [2023-08-30 09:39:06,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:39:06,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053541707] [2023-08-30 09:39:06,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053541707] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:39:06,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 09:39:06,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-30 09:39:06,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142140153] [2023-08-30 09:39:06,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 09:39:06,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 09:39:06,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:39:06,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 09:39:06,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-08-30 09:39:06,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 413 [2023-08-30 09:39:06,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 63 transitions, 521 flow. Second operand has 10 states, 10 states have (on average 181.4) internal successors, (1814), 10 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:06,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:39:06,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 413 [2023-08-30 09:39:06,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:39:09,969 INFO L130 PetriNetUnfolder]: 869/1492 cut-off events. [2023-08-30 09:39:09,969 INFO L131 PetriNetUnfolder]: For 986/986 co-relation queries the response was YES. [2023-08-30 09:39:09,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3519 conditions, 1492 events. 869/1492 cut-off events. For 986/986 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5739 event pairs, 680 based on Foata normal form. 24/964 useless extension candidates. Maximal degree in co-relation 3477. Up to 741 conditions per place. [2023-08-30 09:39:09,980 INFO L137 encePairwiseOnDemand]: 406/413 looper letters, 128 selfloop transitions, 11 changer transitions 0/139 dead transitions. [2023-08-30 09:39:09,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 139 transitions, 1333 flow [2023-08-30 09:39:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 09:39:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 09:39:09,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2060 transitions. [2023-08-30 09:39:09,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45344486022452124 [2023-08-30 09:39:09,987 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2060 transitions. [2023-08-30 09:39:09,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2060 transitions. [2023-08-30 09:39:09,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:39:09,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2060 transitions. [2023-08-30 09:39:09,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 187.27272727272728) internal successors, (2060), 11 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:09,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 413.0) internal successors, (4956), 12 states have internal predecessors, (4956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:09,998 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 413.0) internal successors, (4956), 12 states have internal predecessors, (4956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:09,998 INFO L175 Difference]: Start difference. First operand has 102 places, 63 transitions, 521 flow. Second operand 11 states and 2060 transitions. [2023-08-30 09:39:09,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 139 transitions, 1333 flow [2023-08-30 09:39:10,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 139 transitions, 1186 flow, removed 42 selfloop flow, removed 10 redundant places. [2023-08-30 09:39:10,007 INFO L231 Difference]: Finished difference. Result has 105 places, 68 transitions, 558 flow [2023-08-30 09:39:10,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=558, PETRI_PLACES=105, PETRI_TRANSITIONS=68} [2023-08-30 09:39:10,008 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 65 predicate places. [2023-08-30 09:39:10,008 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 68 transitions, 558 flow [2023-08-30 09:39:10,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.4) internal successors, (1814), 10 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:10,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:39:10,009 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 3, 2, 1, 1] [2023-08-30 09:39:10,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 09:39:10,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:39:10,219 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:39:10,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:39:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash 57136153, now seen corresponding path program 4 times [2023-08-30 09:39:10,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:39:10,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047171375] [2023-08-30 09:39:10,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:39:10,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:39:10,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:39:10,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563990369] [2023-08-30 09:39:10,674 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 09:39:10,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:39:10,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:39:10,675 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:39:10,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 09:39:13,406 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 09:39:13,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:39:13,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 10933 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 09:39:13,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:39:13,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 600 proven. 253 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2023-08-30 09:39:13,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:39:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 600 proven. 253 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2023-08-30 09:39:14,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:39:14,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047171375] [2023-08-30 09:39:14,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:39:14,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563990369] [2023-08-30 09:39:14,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563990369] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:39:14,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 09:39:14,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-30 09:39:14,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901522329] [2023-08-30 09:39:14,108 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 09:39:14,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 09:39:14,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:39:14,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 09:39:14,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-30 09:39:14,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 413 [2023-08-30 09:39:14,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 68 transitions, 558 flow. Second operand has 32 states, 32 states have (on average 188.1875) internal successors, (6022), 32 states have internal predecessors, (6022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:14,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:39:14,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 413 [2023-08-30 09:39:14,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:39:17,146 INFO L130 PetriNetUnfolder]: 869/1524 cut-off events. [2023-08-30 09:39:17,146 INFO L131 PetriNetUnfolder]: For 7519/7519 co-relation queries the response was YES. [2023-08-30 09:39:17,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3641 conditions, 1524 events. 869/1524 cut-off events. For 7519/7519 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5789 event pairs, 680 based on Foata normal form. 24/996 useless extension candidates. Maximal degree in co-relation 3594. Up to 1405 conditions per place. [2023-08-30 09:39:17,155 INFO L137 encePairwiseOnDemand]: 409/413 looper letters, 62 selfloop transitions, 39 changer transitions 0/101 dead transitions. [2023-08-30 09:39:17,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 101 transitions, 1159 flow [2023-08-30 09:39:17,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 09:39:17,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 09:39:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6084 transitions. [2023-08-30 09:39:17,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603510895883777 [2023-08-30 09:39:17,174 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6084 transitions. [2023-08-30 09:39:17,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6084 transitions. [2023-08-30 09:39:17,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:39:17,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6084 transitions. [2023-08-30 09:39:17,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 190.125) internal successors, (6084), 32 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:17,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 413.0) internal successors, (13629), 33 states have internal predecessors, (13629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:17,210 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 413.0) internal successors, (13629), 33 states have internal predecessors, (13629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:17,210 INFO L175 Difference]: Start difference. First operand has 105 places, 68 transitions, 558 flow. Second operand 32 states and 6084 transitions. [2023-08-30 09:39:17,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 101 transitions, 1159 flow [2023-08-30 09:39:17,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 101 transitions, 1139 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-30 09:39:17,224 INFO L231 Difference]: Finished difference. Result has 141 places, 77 transitions, 755 flow [2023-08-30 09:39:17,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=755, PETRI_PLACES=141, PETRI_TRANSITIONS=77} [2023-08-30 09:39:17,226 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 101 predicate places. [2023-08-30 09:39:17,226 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 77 transitions, 755 flow [2023-08-30 09:39:17,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 188.1875) internal successors, (6022), 32 states have internal predecessors, (6022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:39:17,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:39:17,228 INFO L208 CegarLoopForPetriNet]: trace histogram [62, 3, 2, 1, 1] [2023-08-30 09:39:17,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 09:39:17,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 09:39:17,449 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:39:17,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:39:17,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1205002215, now seen corresponding path program 5 times [2023-08-30 09:39:17,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:39:17,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16881890] [2023-08-30 09:39:17,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:39:17,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:39:17,972 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:39:17,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25139805] [2023-08-30 09:39:17,973 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 09:39:17,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:39:17,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:39:17,978 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:39:17,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process Killed by 15