./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.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 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 13:51:17,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 13:51:17,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 13:51:17,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 13:51:17,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 13:51:17,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 13:51:17,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 13:51:17,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 13:51:17,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 13:51:17,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 13:51:17,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 13:51:17,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 13:51:17,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 13:51:17,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 13:51:17,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 13:51:17,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 13:51:17,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 13:51:17,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 13:51:17,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 13:51:17,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 13:51:17,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 13:51:17,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 13:51:17,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 13:51:17,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 13:51:17,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 13:51:17,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 13:51:17,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 13:51:17,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 13:51:17,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 13:51:17,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 13:51:17,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 13:51:17,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 13:51:17,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 13:51:17,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 13:51:17,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 13:51:17,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 13:51:17,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 13:51:17,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 13:51:17,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 13:51:17,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 13:51:17,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 13:51:17,469 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 13:51:17,502 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 13:51:17,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 13:51:17,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 13:51:17,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 13:51:17,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 13:51:17,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 13:51:17,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 13:51:17,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 13:51:17,505 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 13:51:17,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 13:51:17,505 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 13:51:17,506 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 13:51:17,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 13:51:17,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 13:51:17,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 13:51:17,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 13:51:17,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 13:51:17,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 13:51:17,507 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 13:51:17,507 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 13:51:17,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 13:51:17,507 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 13:51:17,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 13:51:17,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 13:51:17,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 13:51:17,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 13:51:17,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:51:17,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 13:51:17,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 13:51:17,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 13:51:17,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 13:51:17,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 13:51:17,509 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 13:51:17,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 13:51:17,509 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 13:51:17,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 13:51:17,509 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 13:51:17,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 13:51:17,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 13:51:17,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 13:51:17,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 13:51:17,740 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 13:51:17,741 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 13:51:17,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-08-30 13:51:18,655 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 13:51:18,871 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 13:51:18,872 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-08-30 13:51:18,882 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7630d4666/1fbc63f2b2114ced9f77e042cc6df8e6/FLAGf16882247 [2023-08-30 13:51:18,898 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7630d4666/1fbc63f2b2114ced9f77e042cc6df8e6 [2023-08-30 13:51:18,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 13:51:18,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 13:51:18,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 13:51:18,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 13:51:18,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 13:51:18,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:51:18" (1/1) ... [2023-08-30 13:51:18,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f849418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:51:18, skipping insertion in model container [2023-08-30 13:51:18,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:51:18" (1/1) ... [2023-08-30 13:51:18,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 13:51:18,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 13:51:19,259 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 13:51:19,260 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 13:51:19,261 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 13:51:19,261 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 13:51:19,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:51:19,305 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 13:51:19,338 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 13:51:19,339 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 13:51:19,339 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 13:51:19,339 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 13:51:19,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:51:19,412 INFO L208 MainTranslator]: Completed translation [2023-08-30 13:51:19,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:51:19 WrapperNode [2023-08-30 13:51:19,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 13:51:19,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 13:51:19,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 13:51:19,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 13:51:19,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:51:19" (1/1) ... [2023-08-30 13:51:19,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:51:19" (1/1) ... [2023-08-30 13:51:19,456 INFO L138 Inliner]: procedures = 273, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 170 [2023-08-30 13:51:19,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 13:51:19,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 13:51:19,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 13:51:19,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 13:51:19,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:51:19" (1/1) ... [2023-08-30 13:51:19,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:51:19" (1/1) ... [2023-08-30 13:51:19,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:51:19" (1/1) ... [2023-08-30 13:51:19,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:51:19" (1/1) ... [2023-08-30 13:51:19,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:51:19" (1/1) ... [2023-08-30 13:51:19,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:51:19" (1/1) ... [2023-08-30 13:51:19,485 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:51:19" (1/1) ... [2023-08-30 13:51:19,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:51:19" (1/1) ... [2023-08-30 13:51:19,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 13:51:19,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 13:51:19,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 13:51:19,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 13:51:19,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:51:19" (1/1) ... [2023-08-30 13:51:19,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:51:19,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:51:19,526 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 13:51:19,534 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 13:51:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-08-30 13:51:19,556 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-08-30 13:51:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 13:51:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 13:51:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 13:51:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 13:51:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 13:51:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 13:51:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 13:51:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 13:51:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 13:51:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 13:51:19,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 13:51:19,558 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 13:51:19,708 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 13:51:19,710 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 13:51:19,947 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 13:51:19,953 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 13:51:19,958 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 13:51:19,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:51:19 BoogieIcfgContainer [2023-08-30 13:51:19,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 13:51:19,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 13:51:19,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 13:51:19,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 13:51:19,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:51:18" (1/3) ... [2023-08-30 13:51:19,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460a8059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:51:19, skipping insertion in model container [2023-08-30 13:51:19,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:51:19" (2/3) ... [2023-08-30 13:51:19,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460a8059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:51:19, skipping insertion in model container [2023-08-30 13:51:19,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:51:19" (3/3) ... [2023-08-30 13:51:19,966 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2023-08-30 13:51:19,973 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 13:51:19,979 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 13:51:19,980 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 13:51:19,980 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 13:51:20,077 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 13:51:20,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 240 transitions, 490 flow [2023-08-30 13:51:20,187 INFO L130 PetriNetUnfolder]: 17/238 cut-off events. [2023-08-30 13:51:20,187 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:51:20,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 238 events. 17/238 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 538 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 181. Up to 2 conditions per place. [2023-08-30 13:51:20,193 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 240 transitions, 490 flow [2023-08-30 13:51:20,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 238 transitions, 482 flow [2023-08-30 13:51:20,202 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 13:51:20,211 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 238 transitions, 482 flow [2023-08-30 13:51:20,213 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 238 transitions, 482 flow [2023-08-30 13:51:20,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 238 transitions, 482 flow [2023-08-30 13:51:20,256 INFO L130 PetriNetUnfolder]: 17/238 cut-off events. [2023-08-30 13:51:20,257 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:51:20,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 238 events. 17/238 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 539 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 181. Up to 2 conditions per place. [2023-08-30 13:51:20,261 INFO L119 LiptonReduction]: Number of co-enabled transitions 7154 [2023-08-30 13:51:48,273 WARN L222 SmtUtils]: Spent 11.33s on a formula simplification. DAG size of input: 187 DAG size of output: 185 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:51:53,794 WARN L222 SmtUtils]: Spent 5.51s 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 13:52:05,608 WARN L222 SmtUtils]: Spent 11.81s on a formula simplification. DAG size of input: 187 DAG size of output: 185 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:52:10,841 WARN L222 SmtUtils]: Spent 5.23s 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 13:52:26,996 WARN L222 SmtUtils]: Spent 16.15s on a formula simplification. DAG size of input: 188 DAG size of output: 187 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:52:33,364 WARN L222 SmtUtils]: Spent 6.37s 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 13:52:46,117 WARN L222 SmtUtils]: Spent 12.74s on a formula simplification. DAG size of input: 190 DAG size of output: 188 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:52:52,223 WARN L222 SmtUtils]: Spent 6.10s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:52:52,278 INFO L134 LiptonReduction]: Checked pairs total: 7233 [2023-08-30 13:52:52,279 INFO L136 LiptonReduction]: Total number of compositions: 261 [2023-08-30 13:52:52,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 13:52:52,291 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;@116886a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 13:52:52,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 13:52:52,297 INFO L130 PetriNetUnfolder]: 2/5 cut-off events. [2023-08-30 13:52:52,297 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:52:52,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:52,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 13:52:52,298 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 13:52:52,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:52,301 INFO L85 PathProgramCache]: Analyzing trace with hash 803560, now seen corresponding path program 1 times [2023-08-30 13:52:52,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:52,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538178763] [2023-08-30 13:52:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:52,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:52,405 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:52,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [752767414] [2023-08-30 13:52:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:52,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:52,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:52,407 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 13:52:52,410 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 13:52:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:52:52,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 13:52:52,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:52,540 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 13:52:52,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:52:52,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:52,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538178763] [2023-08-30 13:52:52,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:52,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752767414] [2023-08-30 13:52:52,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752767414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:52:52,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:52:52,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:52:52,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157385419] [2023-08-30 13:52:52,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:52:52,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:52:52,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:52,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:52:52,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:52:52,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 501 [2023-08-30 13:52:52,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:52,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:52,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 501 [2023-08-30 13:52:52,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:52,929 INFO L130 PetriNetUnfolder]: 436/710 cut-off events. [2023-08-30 13:52:52,929 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 13:52:52,934 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 61. Compared 2790 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 13:52:52,938 INFO L137 encePairwiseOnDemand]: 492/501 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-30 13:52:52,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 174 flow [2023-08-30 13:52:52,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:52:52,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:52:52,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2023-08-30 13:52:52,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47571523619427813 [2023-08-30 13:52:52,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2023-08-30 13:52:52,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2023-08-30 13:52:52,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:52,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2023-08-30 13:52:52,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:52,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:52,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:52,963 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 84 flow. Second operand 3 states and 715 transitions. [2023-08-30 13:52:52,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 174 flow [2023-08-30 13:52:52,965 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 13:52:52,966 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 110 flow [2023-08-30 13:52:52,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, 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 13:52:52,970 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-30 13:52:52,970 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 110 flow [2023-08-30 13:52:52,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:52,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:52,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 13:52:52,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 13:52:53,177 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 13:52:53,177 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 13:52:53,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:53,179 INFO L85 PathProgramCache]: Analyzing trace with hash 803757, now seen corresponding path program 1 times [2023-08-30 13:52:53,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:53,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257515714] [2023-08-30 13:52:53,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:53,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:53,224 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:53,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640181328] [2023-08-30 13:52:53,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:53,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:53,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:53,228 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 13:52:53,230 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 13:52:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:52:53,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 13:52:53,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:53,363 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 13:52:53,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:52:53,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:53,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257515714] [2023-08-30 13:52:53,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:53,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640181328] [2023-08-30 13:52:53,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640181328] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:52:53,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:52:53,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:52:53,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077722191] [2023-08-30 13:52:53,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:52:53,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:52:53,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:53,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:52:53,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:52:53,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 501 [2023-08-30 13:52:53,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:53,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:53,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 501 [2023-08-30 13:52:53,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:53,518 INFO L130 PetriNetUnfolder]: 435/708 cut-off events. [2023-08-30 13:52:53,519 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 13:52:53,519 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 61. Compared 2776 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 13:52:53,522 INFO L137 encePairwiseOnDemand]: 499/501 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 13:52:53,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 180 flow [2023-08-30 13:52:53,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:52:53,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:52:53,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 711 transitions. [2023-08-30 13:52:53,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47305389221556887 [2023-08-30 13:52:53,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 711 transitions. [2023-08-30 13:52:53,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 711 transitions. [2023-08-30 13:52:53,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:53,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 711 transitions. [2023-08-30 13:52:53,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:53,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:53,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:53,532 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 110 flow. Second operand 3 states and 711 transitions. [2023-08-30 13:52:53,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 180 flow [2023-08-30 13:52:53,533 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 13:52:53,534 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 103 flow [2023-08-30 13:52:53,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, 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 13:52:53,536 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-30 13:52:53,537 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 103 flow [2023-08-30 13:52:53,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:53,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:53,537 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-30 13:52:53,547 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 13:52:53,747 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 13:52:53,747 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 13:52:53,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:53,748 INFO L85 PathProgramCache]: Analyzing trace with hash 772382772, now seen corresponding path program 1 times [2023-08-30 13:52:53,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:53,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280592279] [2023-08-30 13:52:53,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:53,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:53,774 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:53,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591005620] [2023-08-30 13:52:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:53,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:53,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:53,782 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 13:52:53,783 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 13:52:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:52:53,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-30 13:52:53,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:53,865 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 13:52:53,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:52:53,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:53,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280592279] [2023-08-30 13:52:53,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:53,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591005620] [2023-08-30 13:52:53,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591005620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:52:53,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:52:53,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 13:52:53,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487530979] [2023-08-30 13:52:53,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:52:53,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:52:53,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:53,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:52:53,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:52:53,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 501 [2023-08-30 13:52:53,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:53,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:53,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 501 [2023-08-30 13:52:53,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:54,038 INFO L130 PetriNetUnfolder]: 435/712 cut-off events. [2023-08-30 13:52:54,039 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:52:54,039 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 60. Compared 2773 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 13:52:54,041 INFO L137 encePairwiseOnDemand]: 496/501 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-30 13:52:54,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 197 flow [2023-08-30 13:52:54,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:52:54,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:52:54,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2023-08-30 13:52:54,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47571523619427813 [2023-08-30 13:52:54,044 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2023-08-30 13:52:54,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2023-08-30 13:52:54,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:54,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2023-08-30 13:52:54,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:54,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:54,051 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:54,051 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 103 flow. Second operand 3 states and 715 transitions. [2023-08-30 13:52:54,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 197 flow [2023-08-30 13:52:54,052 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 13:52:54,053 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 124 flow [2023-08-30 13:52:54,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, 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 13:52:54,054 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-08-30 13:52:54,054 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 124 flow [2023-08-30 13:52:54,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:54,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:54,055 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 13:52:54,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 13:52:54,259 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 13:52:54,260 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 13:52:54,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:54,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1824312908, now seen corresponding path program 1 times [2023-08-30 13:52:54,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:54,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020465452] [2023-08-30 13:52:54,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:54,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:54,287 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:54,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561565837] [2023-08-30 13:52:54,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:54,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:54,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:54,289 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 13:52:54,290 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 13:52:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:52:54,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 13:52:54,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:54,453 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 13:52:54,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:52:54,471 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 13:52:54,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:54,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020465452] [2023-08-30 13:52:54,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:54,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561565837] [2023-08-30 13:52:54,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561565837] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:52:54,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 13:52:54,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-30 13:52:54,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452960360] [2023-08-30 13:52:54,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 13:52:54,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 13:52:54,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:54,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 13:52:54,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 13:52:54,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-08-30 13:52:54,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:54,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:54,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-08-30 13:52:54,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:54,809 INFO L130 PetriNetUnfolder]: 437/724 cut-off events. [2023-08-30 13:52:54,809 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 13:52:54,810 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 60. Compared 2833 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 13:52:54,812 INFO L137 encePairwiseOnDemand]: 494/501 looper letters, 43 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2023-08-30 13:52:54,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 270 flow [2023-08-30 13:52:54,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:52:54,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:52:54,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1396 transitions. [2023-08-30 13:52:54,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4644045242847638 [2023-08-30 13:52:54,815 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1396 transitions. [2023-08-30 13:52:54,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1396 transitions. [2023-08-30 13:52:54,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:54,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1396 transitions. [2023-08-30 13:52:54,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 232.66666666666666) internal successors, (1396), 6 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:54,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:54,823 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:54,823 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 124 flow. Second operand 6 states and 1396 transitions. [2023-08-30 13:52:54,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 270 flow [2023-08-30 13:52:54,824 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 13:52:54,825 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 200 flow [2023-08-30 13:52:54,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, 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 13:52:54,826 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2023-08-30 13:52:54,826 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 200 flow [2023-08-30 13:52:54,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:54,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:54,827 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-30 13:52:54,834 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 13:52:55,036 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 13:52:55,037 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 13:52:55,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:55,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2023882804, now seen corresponding path program 2 times [2023-08-30 13:52:55,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:55,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421329467] [2023-08-30 13:52:55,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:55,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:55,083 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:55,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640472166] [2023-08-30 13:52:55,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:52:55,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:55,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:55,085 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 13:52:55,087 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 13:52:55,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 13:52:55,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:52:55,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 13:52:55,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:55,244 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 13:52:55,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:52:55,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:55,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421329467] [2023-08-30 13:52:55,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:55,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640472166] [2023-08-30 13:52:55,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640472166] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:52:55,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:52:55,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:52:55,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930250621] [2023-08-30 13:52:55,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:52:55,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:52:55,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:55,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:52:55,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:52:55,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 501 [2023-08-30 13:52:55,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:55,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:55,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 501 [2023-08-30 13:52:55,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:55,489 INFO L130 PetriNetUnfolder]: 437/722 cut-off events. [2023-08-30 13:52:55,489 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 13:52:55,490 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 60. Compared 2814 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 13:52:55,492 INFO L137 encePairwiseOnDemand]: 497/501 looper letters, 42 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-08-30 13:52:55,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 290 flow [2023-08-30 13:52:55,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:52:55,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:52:55,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2023-08-30 13:52:55,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697272122421823 [2023-08-30 13:52:55,494 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 706 transitions. [2023-08-30 13:52:55,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 706 transitions. [2023-08-30 13:52:55,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:55,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 706 transitions. [2023-08-30 13:52:55,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:55,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:55,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:55,499 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 200 flow. Second operand 3 states and 706 transitions. [2023-08-30 13:52:55,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 290 flow [2023-08-30 13:52:55,500 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 13:52:55,501 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 202 flow [2023-08-30 13:52:55,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, 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 13:52:55,501 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2023-08-30 13:52:55,501 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 202 flow [2023-08-30 13:52:55,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:55,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:55,502 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-30 13:52:55,509 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 13:52:55,706 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 13:52:55,707 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 13:52:55,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:55,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1684135780, now seen corresponding path program 3 times [2023-08-30 13:52:55,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:55,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167154728] [2023-08-30 13:52:55,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:55,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:55,754 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:55,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817521146] [2023-08-30 13:52:55,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 13:52:55,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:55,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:55,756 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 13:52:55,757 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 13:52:55,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 13:52:55,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:52:55,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 13:52:55,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:56,028 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 13:52:56,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:52:56,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:56,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167154728] [2023-08-30 13:52:56,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:56,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817521146] [2023-08-30 13:52:56,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817521146] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:52:56,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:52:56,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 13:52:56,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311684774] [2023-08-30 13:52:56,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:52:56,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 13:52:56,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:56,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 13:52:56,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 13:52:56,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 501 [2023-08-30 13:52:56,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 220.16666666666666) internal successors, (1321), 6 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:56,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:56,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 501 [2023-08-30 13:52:56,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:56,350 INFO L130 PetriNetUnfolder]: 435/712 cut-off events. [2023-08-30 13:52:56,350 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-08-30 13:52:56,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 712 events. 435/712 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2765 event pairs, 340 based on Foata normal form. 4/440 useless extension candidates. Maximal degree in co-relation 1481. Up to 699 conditions per place. [2023-08-30 13:52:56,353 INFO L137 encePairwiseOnDemand]: 493/501 looper letters, 39 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2023-08-30 13:52:56,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 265 flow [2023-08-30 13:52:56,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:52:56,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:52:56,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1355 transitions. [2023-08-30 13:52:56,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507651363938789 [2023-08-30 13:52:56,356 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1355 transitions. [2023-08-30 13:52:56,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1355 transitions. [2023-08-30 13:52:56,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:56,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1355 transitions. [2023-08-30 13:52:56,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:56,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:56,362 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:56,362 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 202 flow. Second operand 6 states and 1355 transitions. [2023-08-30 13:52:56,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 265 flow [2023-08-30 13:52:56,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 237 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 13:52:56,364 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 146 flow [2023-08-30 13:52:56,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-30 13:52:56,364 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2023-08-30 13:52:56,364 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 146 flow [2023-08-30 13:52:56,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.16666666666666) internal successors, (1321), 6 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:56,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:56,365 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:52:56,373 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 13:52:56,571 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 13:52:56,571 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:52:56,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:56,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1722067788, now seen corresponding path program 1 times [2023-08-30 13:52:56,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:56,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413703247] [2023-08-30 13:52:56,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:56,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:56,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:56,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940828413] [2023-08-30 13:52:56,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:56,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:56,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:56,616 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 13:52:56,618 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 13:52:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:52:56,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 13:52:56,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:56,975 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:52:56,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:52:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:52:57,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:57,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413703247] [2023-08-30 13:52:57,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:57,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940828413] [2023-08-30 13:52:57,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940828413] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:52:57,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 13:52:57,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 13:52:57,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795422853] [2023-08-30 13:52:57,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 13:52:57,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 13:52:57,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:57,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 13:52:57,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 13:52:57,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-08-30 13:52:57,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 146 flow. Second operand has 12 states, 12 states have (on average 224.58333333333334) internal successors, (2695), 12 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:57,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:57,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-08-30 13:52:57,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:57,932 INFO L130 PetriNetUnfolder]: 435/724 cut-off events. [2023-08-30 13:52:57,932 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2023-08-30 13:52:57,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 724 events. 435/724 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2836 event pairs, 340 based on Foata normal form. 12/460 useless extension candidates. Maximal degree in co-relation 1523. Up to 705 conditions per place. [2023-08-30 13:52:57,935 INFO L137 encePairwiseOnDemand]: 498/501 looper letters, 33 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2023-08-30 13:52:57,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 46 transitions, 274 flow [2023-08-30 13:52:57,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 13:52:57,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 13:52:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2725 transitions. [2023-08-30 13:52:57,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532601463739188 [2023-08-30 13:52:57,940 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2725 transitions. [2023-08-30 13:52:57,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2725 transitions. [2023-08-30 13:52:57,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:57,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2725 transitions. [2023-08-30 13:52:57,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 227.08333333333334) internal successors, (2725), 12 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:57,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 501.0) internal successors, (6513), 13 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:57,950 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 501.0) internal successors, (6513), 13 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:57,951 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 146 flow. Second operand 12 states and 2725 transitions. [2023-08-30 13:52:57,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 46 transitions, 274 flow [2023-08-30 13:52:57,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 46 transitions, 266 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 13:52:57,952 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 238 flow [2023-08-30 13:52:57,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=238, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2023-08-30 13:52:57,953 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2023-08-30 13:52:57,953 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 238 flow [2023-08-30 13:52:57,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 224.58333333333334) internal successors, (2695), 12 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:57,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:57,954 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:52:57,964 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 13:52:58,161 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 13:52:58,161 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:52:58,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:58,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1929241780, now seen corresponding path program 2 times [2023-08-30 13:52:58,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:58,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159172398] [2023-08-30 13:52:58,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:58,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:58,252 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:58,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85239665] [2023-08-30 13:52:58,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:52:58,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:58,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:58,254 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 13:52:58,257 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 13:52:58,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 13:52:58,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:52:58,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 13:52:58,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 13:52:58,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:52:58,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:58,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159172398] [2023-08-30 13:52:58,618 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:58,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85239665] [2023-08-30 13:52:58,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85239665] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:52:58,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:52:58,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:52:58,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047464593] [2023-08-30 13:52:58,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:52:58,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:52:58,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:58,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:52:58,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:52:58,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 501 [2023-08-30 13:52:58,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:58,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:58,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 501 [2023-08-30 13:52:58,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:58,779 INFO L130 PetriNetUnfolder]: 398/663 cut-off events. [2023-08-30 13:52:58,779 INFO L131 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2023-08-30 13:52:58,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1469 conditions, 663 events. 398/663 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2867 event pairs, 10 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 1444. Up to 597 conditions per place. [2023-08-30 13:52:58,782 INFO L137 encePairwiseOnDemand]: 499/501 looper letters, 59 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-08-30 13:52:58,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 388 flow [2023-08-30 13:52:58,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:52:58,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:52:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 723 transitions. [2023-08-30 13:52:58,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810379241516966 [2023-08-30 13:52:58,784 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 723 transitions. [2023-08-30 13:52:58,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 723 transitions. [2023-08-30 13:52:58,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:58,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 723 transitions. [2023-08-30 13:52:58,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:58,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:58,787 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:58,787 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 238 flow. Second operand 3 states and 723 transitions. [2023-08-30 13:52:58,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 388 flow [2023-08-30 13:52:58,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 336 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 13:52:58,789 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 186 flow [2023-08-30 13:52:58,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2023-08-30 13:52:58,790 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2023-08-30 13:52:58,790 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 186 flow [2023-08-30 13:52:58,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:58,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:58,791 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:52:58,797 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 13:52:58,996 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 13:52:58,996 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:52:58,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:58,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1929241803, now seen corresponding path program 1 times [2023-08-30 13:52:58,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:58,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981288713] [2023-08-30 13:52:58,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:58,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:59,088 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:59,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768052010] [2023-08-30 13:52:59,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:59,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:59,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:59,090 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 13:52:59,092 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 13:52:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:52:59,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 2480 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 13:52:59,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:59,846 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:52:59,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:53:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:53:00,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:53:00,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981288713] [2023-08-30 13:53:00,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:53:00,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768052010] [2023-08-30 13:53:00,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768052010] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:53:00,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 13:53:00,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-30 13:53:00,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649736415] [2023-08-30 13:53:00,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 13:53:00,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 13:53:00,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:53:00,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 13:53:00,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-30 13:53:00,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-08-30 13:53:00,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 186 flow. Second operand has 24 states, 24 states have (on average 224.29166666666666) internal successors, (5383), 24 states have internal predecessors, (5383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:00,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:53:00,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-08-30 13:53:00,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:53:01,265 INFO L130 PetriNetUnfolder]: 398/687 cut-off events. [2023-08-30 13:53:01,266 INFO L131 PetriNetUnfolder]: For 1220/1220 co-relation queries the response was YES. [2023-08-30 13:53:01,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 687 events. 398/687 cut-off events. For 1220/1220 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2560 event pairs, 307 based on Foata normal form. 24/471 useless extension candidates. Maximal degree in co-relation 1517. Up to 644 conditions per place. [2023-08-30 13:53:01,269 INFO L137 encePairwiseOnDemand]: 498/501 looper letters, 32 selfloop transitions, 25 changer transitions 0/57 dead transitions. [2023-08-30 13:53:01,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 57 transitions, 372 flow [2023-08-30 13:53:01,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 13:53:01,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 13:53:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5418 transitions. [2023-08-30 13:53:01,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505988023952096 [2023-08-30 13:53:01,278 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5418 transitions. [2023-08-30 13:53:01,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5418 transitions. [2023-08-30 13:53:01,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:53:01,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5418 transitions. [2023-08-30 13:53:01,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 225.75) internal successors, (5418), 24 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:01,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 501.0) internal successors, (12525), 25 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:01,308 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 501.0) internal successors, (12525), 25 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:01,308 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 186 flow. Second operand 24 states and 5418 transitions. [2023-08-30 13:53:01,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 57 transitions, 372 flow [2023-08-30 13:53:01,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 57 transitions, 371 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:53:01,310 INFO L231 Difference]: Finished difference. Result has 96 places, 57 transitions, 381 flow [2023-08-30 13:53:01,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=381, PETRI_PLACES=96, PETRI_TRANSITIONS=57} [2023-08-30 13:53:01,311 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 56 predicate places. [2023-08-30 13:53:01,311 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 57 transitions, 381 flow [2023-08-30 13:53:01,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 224.29166666666666) internal successors, (5383), 24 states have internal predecessors, (5383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:01,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:53:01,312 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:53:01,324 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 13:53:01,524 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 13:53:01,524 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:53:01,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:53:01,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1228995381, now seen corresponding path program 2 times [2023-08-30 13:53:01,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:53:01,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349662442] [2023-08-30 13:53:01,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:53:01,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:53:01,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:53:01,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1024963997] [2023-08-30 13:53:01,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:53:01,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:53:01,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:53:01,706 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 13:53:01,709 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 13:53:02,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 13:53:02,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:53:02,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 5288 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 13:53:02,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:53:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:53:03,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:53:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:53:03,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:53:03,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349662442] [2023-08-30 13:53:03,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:53:03,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024963997] [2023-08-30 13:53:03,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024963997] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:53:03,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 13:53:03,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-30 13:53:03,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806066820] [2023-08-30 13:53:03,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 13:53:03,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 13:53:03,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:53:03,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 13:53:03,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-30 13:53:03,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-08-30 13:53:03,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 57 transitions, 381 flow. Second operand has 32 states, 32 states have (on average 224.25) internal successors, (7176), 32 states have internal predecessors, (7176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:03,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:53:03,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-08-30 13:53:03,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:53:04,992 INFO L130 PetriNetUnfolder]: 398/703 cut-off events. [2023-08-30 13:53:04,992 INFO L131 PetriNetUnfolder]: For 4132/4132 co-relation queries the response was YES. [2023-08-30 13:53:04,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 703 events. 398/703 cut-off events. For 4132/4132 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2560 event pairs, 307 based on Foata normal form. 16/479 useless extension candidates. Maximal degree in co-relation 1692. Up to 644 conditions per place. [2023-08-30 13:53:04,995 INFO L137 encePairwiseOnDemand]: 498/501 looper letters, 32 selfloop transitions, 33 changer transitions 0/65 dead transitions. [2023-08-30 13:53:04,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 65 transitions, 575 flow [2023-08-30 13:53:04,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 13:53:04,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 13:53:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7206 transitions. [2023-08-30 13:53:05,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494760479041916 [2023-08-30 13:53:05,005 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 7206 transitions. [2023-08-30 13:53:05,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 7206 transitions. [2023-08-30 13:53:05,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:53:05,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 7206 transitions. [2023-08-30 13:53:05,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 225.1875) internal successors, (7206), 32 states have internal predecessors, (7206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:05,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 501.0) internal successors, (16533), 33 states have internal predecessors, (16533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:05,027 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 501.0) internal successors, (16533), 33 states have internal predecessors, (16533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:05,028 INFO L175 Difference]: Start difference. First operand has 96 places, 57 transitions, 381 flow. Second operand 32 states and 7206 transitions. [2023-08-30 13:53:05,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 65 transitions, 575 flow [2023-08-30 13:53:05,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 65 transitions, 459 flow, removed 45 selfloop flow, removed 11 redundant places. [2023-08-30 13:53:05,032 INFO L231 Difference]: Finished difference. Result has 124 places, 65 transitions, 445 flow [2023-08-30 13:53:05,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=445, PETRI_PLACES=124, PETRI_TRANSITIONS=65} [2023-08-30 13:53:05,032 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 84 predicate places. [2023-08-30 13:53:05,032 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 65 transitions, 445 flow [2023-08-30 13:53:05,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 224.25) internal successors, (7176), 32 states have internal predecessors, (7176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:05,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:53:05,034 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:53:05,051 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 13:53:05,248 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 13:53:05,249 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:53:05,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:53:05,249 INFO L85 PathProgramCache]: Analyzing trace with hash -716192565, now seen corresponding path program 3 times [2023-08-30 13:53:05,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:53:05,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353476969] [2023-08-30 13:53:05,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:53:05,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:53:05,463 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:53:05,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792740282] [2023-08-30 13:53:05,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 13:53:05,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:53:05,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:53:05,465 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 13:53:05,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 13:53:06,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 13:53:06,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:53:06,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 13:53:06,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:53:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-30 13:53:06,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:53:06,677 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-30 13:53:06,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:53:06,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353476969] [2023-08-30 13:53:06,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:53:06,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792740282] [2023-08-30 13:53:06,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792740282] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:53:06,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 13:53:06,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-30 13:53:06,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232823374] [2023-08-30 13:53:06,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 13:53:06,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 13:53:06,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:53:06,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 13:53:06,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 13:53:06,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-08-30 13:53:06,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 65 transitions, 445 flow. Second operand has 6 states, 6 states have (on average 225.5) internal successors, (1353), 6 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:06,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:53:06,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-08-30 13:53:06,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:53:07,063 INFO L130 PetriNetUnfolder]: 400/770 cut-off events. [2023-08-30 13:53:07,063 INFO L131 PetriNetUnfolder]: For 1655/1655 co-relation queries the response was YES. [2023-08-30 13:53:07,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2088 conditions, 770 events. 400/770 cut-off events. For 1655/1655 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2435 event pairs, 307 based on Foata normal form. 3/533 useless extension candidates. Maximal degree in co-relation 2043. Up to 638 conditions per place. [2023-08-30 13:53:07,067 INFO L137 encePairwiseOnDemand]: 497/501 looper letters, 156 selfloop transitions, 6 changer transitions 0/162 dead transitions. [2023-08-30 13:53:07,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 162 transitions, 1584 flow [2023-08-30 13:53:07,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:53:07,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:53:07,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1383 transitions. [2023-08-30 13:53:07,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4600798403193613 [2023-08-30 13:53:07,070 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1383 transitions. [2023-08-30 13:53:07,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1383 transitions. [2023-08-30 13:53:07,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:53:07,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1383 transitions. [2023-08-30 13:53:07,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.5) internal successors, (1383), 6 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:07,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:07,074 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:07,074 INFO L175 Difference]: Start difference. First operand has 124 places, 65 transitions, 445 flow. Second operand 6 states and 1383 transitions. [2023-08-30 13:53:07,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 162 transitions, 1584 flow [2023-08-30 13:53:07,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 162 transitions, 1198 flow, removed 100 selfloop flow, removed 23 redundant places. [2023-08-30 13:53:07,095 INFO L231 Difference]: Finished difference. Result has 110 places, 68 transitions, 511 flow [2023-08-30 13:53:07,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=511, PETRI_PLACES=110, PETRI_TRANSITIONS=68} [2023-08-30 13:53:07,096 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 70 predicate places. [2023-08-30 13:53:07,096 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 68 transitions, 511 flow [2023-08-30 13:53:07,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 225.5) internal successors, (1353), 6 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:07,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:53:07,096 INFO L208 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:53:07,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 13:53:07,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 13:53:07,305 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:53:07,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:53:07,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1327930031, now seen corresponding path program 4 times [2023-08-30 13:53:07,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:53:07,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744012699] [2023-08-30 13:53:07,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:53:07,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:53:08,199 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:53:08,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1764441885] [2023-08-30 13:53:08,199 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 13:53:08,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:53:08,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:53:08,200 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:53:08,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 13:53:14,008 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 13:53:14,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:53:14,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 28340 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 13:53:14,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:53:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-30 13:53:14,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:53:14,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-30 13:53:14,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:53:14,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744012699] [2023-08-30 13:53:14,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:53:14,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764441885] [2023-08-30 13:53:14,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764441885] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:53:14,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 13:53:14,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-08-30 13:53:14,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325147947] [2023-08-30 13:53:14,520 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 13:53:14,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 13:53:14,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:53:14,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 13:53:14,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 13:53:14,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-08-30 13:53:14,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 68 transitions, 511 flow. Second operand has 12 states, 12 states have (on average 225.75) internal successors, (2709), 12 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:14,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:53:14,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-08-30 13:53:14,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:53:15,629 INFO L130 PetriNetUnfolder]: 406/968 cut-off events. [2023-08-30 13:53:15,629 INFO L131 PetriNetUnfolder]: For 5331/5331 co-relation queries the response was YES. [2023-08-30 13:53:15,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2737 conditions, 968 events. 406/968 cut-off events. For 5331/5331 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2441 event pairs, 307 based on Foata normal form. 6/734 useless extension candidates. Maximal degree in co-relation 2688. Up to 638 conditions per place. [2023-08-30 13:53:15,634 INFO L137 encePairwiseOnDemand]: 497/501 looper letters, 348 selfloop transitions, 12 changer transitions 0/360 dead transitions. [2023-08-30 13:53:15,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 360 transitions, 2876 flow [2023-08-30 13:53:15,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 13:53:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 13:53:15,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2742 transitions. [2023-08-30 13:53:15,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560878243512974 [2023-08-30 13:53:15,638 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2742 transitions. [2023-08-30 13:53:15,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2742 transitions. [2023-08-30 13:53:15,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:53:15,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2742 transitions. [2023-08-30 13:53:15,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 228.5) internal successors, (2742), 12 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:15,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 501.0) internal successors, (6513), 13 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:15,645 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 501.0) internal successors, (6513), 13 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:15,645 INFO L175 Difference]: Start difference. First operand has 110 places, 68 transitions, 511 flow. Second operand 12 states and 2742 transitions. [2023-08-30 13:53:15,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 360 transitions, 2876 flow [2023-08-30 13:53:15,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 360 transitions, 2874 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:53:15,657 INFO L231 Difference]: Finished difference. Result has 127 places, 75 transitions, 983 flow [2023-08-30 13:53:15,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=983, PETRI_PLACES=127, PETRI_TRANSITIONS=75} [2023-08-30 13:53:15,657 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 87 predicate places. [2023-08-30 13:53:15,657 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 75 transitions, 983 flow [2023-08-30 13:53:15,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 225.75) internal successors, (2709), 12 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:53:15,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:53:15,658 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:53:15,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 13:53:15,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 13:53:15,865 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:53:15,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:53:15,865 INFO L85 PathProgramCache]: Analyzing trace with hash 190789239, now seen corresponding path program 5 times [2023-08-30 13:53:15,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:53:15,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974533169] [2023-08-30 13:53:15,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:53:15,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:53:17,986 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:53:17,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200632331] [2023-08-30 13:53:17,986 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 13:53:17,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:53:17,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:53:17,987 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:53:17,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Killed by 15