./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 10:36:41,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:36:41,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:36:41,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:36:41,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:36:41,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:36:41,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:36:41,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:36:41,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:36:41,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:36:41,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:36:41,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:36:41,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:36:41,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:36:41,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:36:41,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:36:41,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:36:41,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:36:41,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:36:41,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:36:41,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:36:41,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:36:41,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:36:41,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:36:41,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:36:41,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:36:41,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:36:41,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:36:41,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:36:41,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:36:41,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:36:41,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:36:41,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:36:41,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:36:41,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:36:41,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:36:41,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:36:41,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:36:41,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:36:41,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:36:41,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:36:41,300 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:36:41,331 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:36:41,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:36:41,332 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:36:41,332 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:36:41,333 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:36:41,333 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:36:41,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:36:41,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:36:41,334 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:36:41,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:36:41,335 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:36:41,335 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:36:41,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:36:41,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:36:41,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:36:41,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:36:41,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:36:41,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:36:41,336 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:36:41,336 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:36:41,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:36:41,337 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:36:41,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:36:41,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:36:41,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:36:41,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:36:41,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:36:41,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:36:41,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:36:41,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:36:41,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:36:41,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:36:41,339 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:36:41,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:36:41,339 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:36:41,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:36:41,339 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:36:41,340 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:36:41,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:36:41,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:36:41,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:36:41,638 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:36:41,638 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:36:41,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-08-30 10:36:42,829 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:36:43,114 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:36:43,114 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-08-30 10:36:43,134 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dc8a9b8f/044e9f165c2c488d80a6c3ba31afdbb4/FLAG88fb8273b [2023-08-30 10:36:43,145 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dc8a9b8f/044e9f165c2c488d80a6c3ba31afdbb4 [2023-08-30 10:36:43,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:36:43,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:36:43,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:36:43,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:36:43,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:36:43,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:36:43" (1/1) ... [2023-08-30 10:36:43,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ae4532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:43, skipping insertion in model container [2023-08-30 10:36:43,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:36:43" (1/1) ... [2023-08-30 10:36:43,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:36:43,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:36:43,549 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2023-08-30 10:36:43,556 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:36:43,557 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:36:43,557 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:36:43,557 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:36:43,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:36:43,586 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:36:43,610 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2023-08-30 10:36:43,612 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:36:43,612 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:36:43,613 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:36:43,613 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:36:43,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:36:43,690 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:36:43,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:43 WrapperNode [2023-08-30 10:36:43,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:36:43,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:36:43,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:36:43,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:36:43,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:43" (1/1) ... [2023-08-30 10:36:43,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:43" (1/1) ... [2023-08-30 10:36:43,768 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 200 [2023-08-30 10:36:43,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:36:43,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:36:43,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:36:43,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:36:43,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:43" (1/1) ... [2023-08-30 10:36:43,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:43" (1/1) ... [2023-08-30 10:36:43,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:43" (1/1) ... [2023-08-30 10:36:43,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:43" (1/1) ... [2023-08-30 10:36:43,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:43" (1/1) ... [2023-08-30 10:36:43,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:43" (1/1) ... [2023-08-30 10:36:43,818 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:43" (1/1) ... [2023-08-30 10:36:43,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:43" (1/1) ... [2023-08-30 10:36:43,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:36:43,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:36:43,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:36:43,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:36:43,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:43" (1/1) ... [2023-08-30 10:36:43,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:36:43,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:36:43,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 10:36:43,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 10:36:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:36:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 10:36:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:36:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:36:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:36:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:36:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 10:36:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:36:43,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 10:36:43,907 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:36:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:36:43,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:36:43,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:36:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:36:43,909 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 10:36:44,128 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:36:44,130 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:36:44,532 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:36:44,538 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:36:44,539 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-30 10:36:44,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:36:44 BoogieIcfgContainer [2023-08-30 10:36:44,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:36:44,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:36:44,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:36:44,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:36:44,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:36:43" (1/3) ... [2023-08-30 10:36:44,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4a37db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:36:44, skipping insertion in model container [2023-08-30 10:36:44,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:43" (2/3) ... [2023-08-30 10:36:44,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4a37db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:36:44, skipping insertion in model container [2023-08-30 10:36:44,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:36:44" (3/3) ... [2023-08-30 10:36:44,548 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2023-08-30 10:36:44,555 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:36:44,563 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:36:44,563 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 10:36:44,564 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:36:44,665 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 10:36:44,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 215 transitions, 438 flow [2023-08-30 10:36:44,767 INFO L130 PetriNetUnfolder]: 26/231 cut-off events. [2023-08-30 10:36:44,767 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 10:36:44,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 231 events. 26/231 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 660 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 123. Up to 4 conditions per place. [2023-08-30 10:36:44,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 215 transitions, 438 flow [2023-08-30 10:36:44,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 212 transitions, 432 flow [2023-08-30 10:36:44,783 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:36:44,791 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 212 transitions, 432 flow [2023-08-30 10:36:44,793 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 212 transitions, 432 flow [2023-08-30 10:36:44,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 212 transitions, 432 flow [2023-08-30 10:36:44,831 INFO L130 PetriNetUnfolder]: 25/228 cut-off events. [2023-08-30 10:36:44,831 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 10:36:44,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 228 events. 25/228 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 646 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 123. Up to 4 conditions per place. [2023-08-30 10:36:44,835 INFO L119 LiptonReduction]: Number of co-enabled transitions 5096 [2023-08-30 10:37:09,048 WARN L222 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 176 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 10:37:24,691 WARN L222 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 179 DAG size of output: 177 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 10:37:42,653 WARN L222 SmtUtils]: Spent 13.16s on a formula simplification. DAG size of input: 179 DAG size of output: 177 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 10:37:48,179 WARN L222 SmtUtils]: Spent 5.52s 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 10:37:59,337 WARN L222 SmtUtils]: Spent 11.07s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 10:38:04,555 WARN L222 SmtUtils]: Spent 5.22s 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 10:38:23,294 WARN L222 SmtUtils]: Spent 18.74s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 10:38:33,141 WARN L222 SmtUtils]: Spent 9.84s 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 10:38:33,145 INFO L134 LiptonReduction]: Checked pairs total: 5652 [2023-08-30 10:38:33,145 INFO L136 LiptonReduction]: Total number of compositions: 210 [2023-08-30 10:38:33,159 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:38:33,163 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;@630840d7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:38:33,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-30 10:38:33,174 INFO L130 PetriNetUnfolder]: 2/8 cut-off events. [2023-08-30 10:38:33,174 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:38:33,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:33,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:38:33,175 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:38:33,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:33,179 INFO L85 PathProgramCache]: Analyzing trace with hash 859495, now seen corresponding path program 1 times [2023-08-30 10:38:33,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:33,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412948257] [2023-08-30 10:38:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:33,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:33,301 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:33,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285771507] [2023-08-30 10:38:33,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:33,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:33,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:33,304 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:38:33,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 10:38:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:38:33,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:38:33,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:38:33,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:38:33,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:33,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412948257] [2023-08-30 10:38:33,474 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:33,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285771507] [2023-08-30 10:38:33,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285771507] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:38:33,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:38:33,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:38:33,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288356972] [2023-08-30 10:38:33,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:38:33,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:38:33,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:33,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:38:33,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:38:33,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 425 [2023-08-30 10:38:33,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:33,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:33,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 425 [2023-08-30 10:38:33,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:33,783 INFO L130 PetriNetUnfolder]: 102/232 cut-off events. [2023-08-30 10:38:33,784 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:38:33,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 232 events. 102/232 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 847 event pairs, 80 based on Foata normal form. 12/134 useless extension candidates. Maximal degree in co-relation 404. Up to 209 conditions per place. [2023-08-30 10:38:33,789 INFO L137 encePairwiseOnDemand]: 406/425 looper letters, 38 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-08-30 10:38:33,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 180 flow [2023-08-30 10:38:33,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:38:33,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:38:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 622 transitions. [2023-08-30 10:38:33,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48784313725490197 [2023-08-30 10:38:33,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 622 transitions. [2023-08-30 10:38:33,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 622 transitions. [2023-08-30 10:38:33,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:33,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 622 transitions. [2023-08-30 10:38:33,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:33,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:33,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:33,833 INFO L175 Difference]: Start difference. First operand has 41 places, 52 transitions, 112 flow. Second operand 3 states and 622 transitions. [2023-08-30 10:38:33,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 180 flow [2023-08-30 10:38:33,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:38:33,837 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 120 flow [2023-08-30 10:38:33,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-08-30 10:38:33,843 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-08-30 10:38:33,844 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 120 flow [2023-08-30 10:38:33,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:33,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:33,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:38:33,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 10:38:34,053 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 10:38:34,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:38:34,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:34,054 INFO L85 PathProgramCache]: Analyzing trace with hash 859667, now seen corresponding path program 1 times [2023-08-30 10:38:34,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:34,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380195063] [2023-08-30 10:38:34,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:34,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:34,110 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:34,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530373140] [2023-08-30 10:38:34,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:34,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:34,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:34,113 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:38:34,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 10:38:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:38:34,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:38:34,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:34,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:38:34,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:38:34,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:34,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380195063] [2023-08-30 10:38:34,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:34,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530373140] [2023-08-30 10:38:34,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530373140] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:38:34,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:38:34,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:38:34,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068553446] [2023-08-30 10:38:34,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:38:34,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:38:34,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:34,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:38:34,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:38:34,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 425 [2023-08-30 10:38:34,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:34,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:34,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 425 [2023-08-30 10:38:34,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:34,485 INFO L130 PetriNetUnfolder]: 101/230 cut-off events. [2023-08-30 10:38:34,486 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:38:34,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 230 events. 101/230 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 842 event pairs, 80 based on Foata normal form. 2/127 useless extension candidates. Maximal degree in co-relation 443. Up to 210 conditions per place. [2023-08-30 10:38:34,487 INFO L137 encePairwiseOnDemand]: 423/425 looper letters, 37 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 10:38:34,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 188 flow [2023-08-30 10:38:34,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:38:34,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:38:34,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2023-08-30 10:38:34,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4768627450980392 [2023-08-30 10:38:34,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2023-08-30 10:38:34,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2023-08-30 10:38:34,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:34,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2023-08-30 10:38:34,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:34,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:34,531 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:34,531 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 120 flow. Second operand 3 states and 608 transitions. [2023-08-30 10:38:34,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 188 flow [2023-08-30 10:38:34,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:38:34,533 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 113 flow [2023-08-30 10:38:34,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-08-30 10:38:34,537 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-08-30 10:38:34,537 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 113 flow [2023-08-30 10:38:34,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:34,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:34,538 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-30 10:38:34,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 10:38:34,739 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 10:38:34,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:38:34,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:34,740 INFO L85 PathProgramCache]: Analyzing trace with hash 826122189, now seen corresponding path program 1 times [2023-08-30 10:38:34,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:34,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383322405] [2023-08-30 10:38:34,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:34,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:34,772 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:34,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825347267] [2023-08-30 10:38:34,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:34,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:34,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:34,780 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:38:34,783 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 10:38:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:38:34,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-30 10:38:34,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:34,881 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 10:38:34,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:38:34,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:34,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383322405] [2023-08-30 10:38:34,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:34,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825347267] [2023-08-30 10:38:34,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825347267] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:38:34,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:38:34,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:38:34,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486471900] [2023-08-30 10:38:34,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:38:34,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:38:34,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:34,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:38:34,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:38:34,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 425 [2023-08-30 10:38:34,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:34,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:34,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 425 [2023-08-30 10:38:34,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:35,106 INFO L130 PetriNetUnfolder]: 101/234 cut-off events. [2023-08-30 10:38:35,106 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:38:35,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 234 events. 101/234 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 857 event pairs, 80 based on Foata normal form. 1/129 useless extension candidates. Maximal degree in co-relation 459. Up to 212 conditions per place. [2023-08-30 10:38:35,108 INFO L137 encePairwiseOnDemand]: 420/425 looper letters, 38 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-08-30 10:38:35,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 205 flow [2023-08-30 10:38:35,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:38:35,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:38:35,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2023-08-30 10:38:35,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48 [2023-08-30 10:38:35,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2023-08-30 10:38:35,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2023-08-30 10:38:35,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:35,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2023-08-30 10:38:35,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:35,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:35,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:35,116 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 113 flow. Second operand 3 states and 612 transitions. [2023-08-30 10:38:35,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 205 flow [2023-08-30 10:38:35,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 205 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:38:35,117 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 134 flow [2023-08-30 10:38:35,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-30 10:38:35,118 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2023-08-30 10:38:35,119 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 134 flow [2023-08-30 10:38:35,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:35,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:35,119 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 10:38:35,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 10:38:35,325 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 10:38:35,325 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:38:35,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:35,325 INFO L85 PathProgramCache]: Analyzing trace with hash -158612272, now seen corresponding path program 1 times [2023-08-30 10:38:35,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:35,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012464911] [2023-08-30 10:38:35,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:35,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:35,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:35,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721266100] [2023-08-30 10:38:35,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:35,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:35,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:35,376 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:38:35,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 10:38:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:38:35,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:38:35,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:35,538 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 10:38:35,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:38:35,553 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 10:38:35,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:35,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012464911] [2023-08-30 10:38:35,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:35,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721266100] [2023-08-30 10:38:35,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721266100] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:38:35,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:38:35,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-30 10:38:35,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197852824] [2023-08-30 10:38:35,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:38:35,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:38:35,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:35,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:38:35,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:38:35,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 425 [2023-08-30 10:38:35,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 190.5) internal successors, (1143), 6 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:35,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:35,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 425 [2023-08-30 10:38:35,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:36,211 INFO L130 PetriNetUnfolder]: 103/246 cut-off events. [2023-08-30 10:38:36,212 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 10:38:36,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 246 events. 103/246 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 918 event pairs, 80 based on Foata normal form. 6/144 useless extension candidates. Maximal degree in co-relation 506. Up to 210 conditions per place. [2023-08-30 10:38:36,214 INFO L137 encePairwiseOnDemand]: 418/425 looper letters, 42 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2023-08-30 10:38:36,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 278 flow [2023-08-30 10:38:36,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:38:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:38:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1191 transitions. [2023-08-30 10:38:36,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46705882352941175 [2023-08-30 10:38:36,218 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1191 transitions. [2023-08-30 10:38:36,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1191 transitions. [2023-08-30 10:38:36,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:36,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1191 transitions. [2023-08-30 10:38:36,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:36,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:36,227 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:36,227 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 134 flow. Second operand 6 states and 1191 transitions. [2023-08-30 10:38:36,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 278 flow [2023-08-30 10:38:36,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:38:36,229 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 210 flow [2023-08-30 10:38:36,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-08-30 10:38:36,230 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2023-08-30 10:38:36,230 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 210 flow [2023-08-30 10:38:36,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.5) internal successors, (1143), 6 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:36,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:36,231 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-30 10:38:36,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 10:38:36,437 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 10:38:36,438 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:38:36,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:36,438 INFO L85 PathProgramCache]: Analyzing trace with hash 639649933, now seen corresponding path program 2 times [2023-08-30 10:38:36,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:36,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821560573] [2023-08-30 10:38:36,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:36,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:36,493 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:36,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400017444] [2023-08-30 10:38:36,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:38:36,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:36,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:36,495 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:38:36,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 10:38:36,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:38:36,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:38:36,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:38:36,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:36,695 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 10:38:36,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:38:36,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:36,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821560573] [2023-08-30 10:38:36,698 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:36,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400017444] [2023-08-30 10:38:36,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400017444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:38:36,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:38:36,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:38:36,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668868470] [2023-08-30 10:38:36,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:38:36,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:38:36,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:36,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:38:36,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:38:36,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 425 [2023-08-30 10:38:36,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:36,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:36,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 425 [2023-08-30 10:38:36,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:36,894 INFO L130 PetriNetUnfolder]: 103/244 cut-off events. [2023-08-30 10:38:36,894 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 10:38:36,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 244 events. 103/244 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 910 event pairs, 80 based on Foata normal form. 1/138 useless extension candidates. Maximal degree in co-relation 538. Up to 224 conditions per place. [2023-08-30 10:38:36,896 INFO L137 encePairwiseOnDemand]: 421/425 looper letters, 41 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-08-30 10:38:36,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 298 flow [2023-08-30 10:38:36,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:38:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:38:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2023-08-30 10:38:36,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47294117647058825 [2023-08-30 10:38:36,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2023-08-30 10:38:36,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2023-08-30 10:38:36,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:36,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2023-08-30 10:38:36,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:36,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:36,903 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:36,904 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 210 flow. Second operand 3 states and 603 transitions. [2023-08-30 10:38:36,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 298 flow [2023-08-30 10:38:36,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 48 transitions, 287 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 10:38:36,907 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 212 flow [2023-08-30 10:38:36,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-08-30 10:38:36,907 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2023-08-30 10:38:36,908 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 212 flow [2023-08-30 10:38:36,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:36,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:36,908 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-30 10:38:36,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 10:38:37,114 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 10:38:37,114 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:38:37,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:37,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1645685492, now seen corresponding path program 3 times [2023-08-30 10:38:37,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:37,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020825817] [2023-08-30 10:38:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:37,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:37,182 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:37,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608998608] [2023-08-30 10:38:37,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 10:38:37,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:37,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:37,184 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:38:37,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 10:38:37,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 10:38:37,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:38:37,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 10:38:37,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:37,519 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:38:37,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:38:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:38:37,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:37,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020825817] [2023-08-30 10:38:37,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:37,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608998608] [2023-08-30 10:38:37,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608998608] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:38:37,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:38:37,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-30 10:38:37,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978639943] [2023-08-30 10:38:37,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:38:37,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 10:38:37,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:37,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 10:38:37,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:38:38,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 425 [2023-08-30 10:38:38,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 212 flow. Second operand has 10 states, 10 states have (on average 183.4) internal successors, (1834), 10 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:38,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:38,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 425 [2023-08-30 10:38:38,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:40,841 INFO L130 PetriNetUnfolder]: 203/472 cut-off events. [2023-08-30 10:38:40,841 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2023-08-30 10:38:40,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 472 events. 203/472 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1937 event pairs, 160 based on Foata normal form. 2/268 useless extension candidates. Maximal degree in co-relation 1007. Up to 208 conditions per place. [2023-08-30 10:38:40,844 INFO L137 encePairwiseOnDemand]: 416/425 looper letters, 72 selfloop transitions, 15 changer transitions 0/91 dead transitions. [2023-08-30 10:38:40,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 91 transitions, 558 flow [2023-08-30 10:38:40,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 10:38:40,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 10:38:40,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2086 transitions. [2023-08-30 10:38:40,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44620320855614976 [2023-08-30 10:38:40,851 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2086 transitions. [2023-08-30 10:38:40,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2086 transitions. [2023-08-30 10:38:40,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:40,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2086 transitions. [2023-08-30 10:38:40,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 189.63636363636363) internal successors, (2086), 11 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:40,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 425.0) internal successors, (5100), 12 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:40,877 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 425.0) internal successors, (5100), 12 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:40,877 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 212 flow. Second operand 11 states and 2086 transitions. [2023-08-30 10:38:40,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 91 transitions, 558 flow [2023-08-30 10:38:40,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 91 transitions, 544 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:38:40,880 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 334 flow [2023-08-30 10:38:40,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=334, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2023-08-30 10:38:40,881 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2023-08-30 10:38:40,881 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 334 flow [2023-08-30 10:38:40,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 183.4) internal successors, (1834), 10 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:40,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:40,882 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 2, 1, 1, 1] [2023-08-30 10:38:40,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 10:38:41,093 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 10:38:41,093 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:38:41,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:41,094 INFO L85 PathProgramCache]: Analyzing trace with hash 523360265, now seen corresponding path program 1 times [2023-08-30 10:38:41,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:41,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397533438] [2023-08-30 10:38:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:41,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:41,192 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:41,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292952963] [2023-08-30 10:38:41,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:41,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:41,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:41,205 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:38:41,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 10:38:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:38:41,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1536 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:38:41,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:41,738 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 10:38:41,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:38:41,791 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 10:38:41,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:41,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397533438] [2023-08-30 10:38:41,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:41,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292952963] [2023-08-30 10:38:41,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292952963] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:38:41,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:38:41,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 10:38:41,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705328641] [2023-08-30 10:38:41,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:38:41,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 10:38:41,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:41,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 10:38:41,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 10:38:41,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 425 [2023-08-30 10:38:41,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 334 flow. Second operand has 12 states, 12 states have (on average 190.33333333333334) internal successors, (2284), 12 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:41,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:41,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 425 [2023-08-30 10:38:41,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:42,672 INFO L130 PetriNetUnfolder]: 203/508 cut-off events. [2023-08-30 10:38:42,672 INFO L131 PetriNetUnfolder]: For 410/410 co-relation queries the response was YES. [2023-08-30 10:38:42,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 508 events. 203/508 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1935 event pairs, 160 based on Foata normal form. 18/323 useless extension candidates. Maximal degree in co-relation 1227. Up to 412 conditions per place. [2023-08-30 10:38:42,675 INFO L137 encePairwiseOnDemand]: 419/425 looper letters, 59 selfloop transitions, 21 changer transitions 0/84 dead transitions. [2023-08-30 10:38:42,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 751 flow [2023-08-30 10:38:42,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:38:42,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:38:42,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2342 transitions. [2023-08-30 10:38:42,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592156862745098 [2023-08-30 10:38:42,681 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2342 transitions. [2023-08-30 10:38:42,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2342 transitions. [2023-08-30 10:38:42,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:42,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2342 transitions. [2023-08-30 10:38:42,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 195.16666666666666) internal successors, (2342), 12 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:42,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 425.0) internal successors, (5525), 13 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:42,694 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 425.0) internal successors, (5525), 13 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:42,694 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 334 flow. Second operand 12 states and 2342 transitions. [2023-08-30 10:38:42,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 751 flow [2023-08-30 10:38:42,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 84 transitions, 721 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-08-30 10:38:42,698 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 494 flow [2023-08-30 10:38:42,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=494, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2023-08-30 10:38:42,699 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2023-08-30 10:38:42,699 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 494 flow [2023-08-30 10:38:42,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 190.33333333333334) internal successors, (2284), 12 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:42,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:42,700 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 2, 1, 1, 1] [2023-08-30 10:38:42,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 10:38:42,909 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 10:38:42,909 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:38:42,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:42,910 INFO L85 PathProgramCache]: Analyzing trace with hash 811768105, now seen corresponding path program 2 times [2023-08-30 10:38:42,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:42,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424965474] [2023-08-30 10:38:42,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:42,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:43,033 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:43,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [631638601] [2023-08-30 10:38:43,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:38:43,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:43,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:43,035 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:38:43,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 10:38:43,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:38:43,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:38:43,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 2940 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 10:38:43,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 34 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 10:38:43,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:38:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 34 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 10:38:44,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:44,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424965474] [2023-08-30 10:38:44,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:44,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631638601] [2023-08-30 10:38:44,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631638601] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:38:44,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:38:44,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-30 10:38:44,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443093745] [2023-08-30 10:38:44,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:38:44,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 10:38:44,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:44,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 10:38:44,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-30 10:38:44,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 425 [2023-08-30 10:38:44,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 494 flow. Second operand has 24 states, 24 states have (on average 190.16666666666666) internal successors, (4564), 24 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:44,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:44,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 425 [2023-08-30 10:38:44,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:46,530 INFO L130 PetriNetUnfolder]: 203/580 cut-off events. [2023-08-30 10:38:46,530 INFO L131 PetriNetUnfolder]: For 2393/2393 co-relation queries the response was YES. [2023-08-30 10:38:46,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 580 events. 203/580 cut-off events. For 2393/2393 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2102 event pairs, 160 based on Foata normal form. 36/413 useless extension candidates. Maximal degree in co-relation 1799. Up to 412 conditions per place. [2023-08-30 10:38:46,534 INFO L137 encePairwiseOnDemand]: 419/425 looper letters, 95 selfloop transitions, 33 changer transitions 0/132 dead transitions. [2023-08-30 10:38:46,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 132 transitions, 1580 flow [2023-08-30 10:38:46,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 10:38:46,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 10:38:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4658 transitions. [2023-08-30 10:38:46,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45666666666666667 [2023-08-30 10:38:46,545 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4658 transitions. [2023-08-30 10:38:46,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4658 transitions. [2023-08-30 10:38:46,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:46,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4658 transitions. [2023-08-30 10:38:46,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 194.08333333333334) internal successors, (4658), 24 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:46,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 425.0) internal successors, (10625), 25 states have internal predecessors, (10625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:46,581 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 425.0) internal successors, (10625), 25 states have internal predecessors, (10625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:46,581 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 494 flow. Second operand 24 states and 4658 transitions. [2023-08-30 10:38:46,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 132 transitions, 1580 flow [2023-08-30 10:38:46,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1466 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-30 10:38:46,590 INFO L231 Difference]: Finished difference. Result has 115 places, 81 transitions, 772 flow [2023-08-30 10:38:46,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=772, PETRI_PLACES=115, PETRI_TRANSITIONS=81} [2023-08-30 10:38:46,593 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 74 predicate places. [2023-08-30 10:38:46,593 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 81 transitions, 772 flow [2023-08-30 10:38:46,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 190.16666666666666) internal successors, (4564), 24 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:46,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:46,595 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 2, 1, 1, 1] [2023-08-30 10:38:46,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 10:38:46,805 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 10:38:46,805 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:38:46,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:46,806 INFO L85 PathProgramCache]: Analyzing trace with hash 780014441, now seen corresponding path program 3 times [2023-08-30 10:38:46,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:46,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67079825] [2023-08-30 10:38:46,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:46,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:47,023 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:47,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893330550] [2023-08-30 10:38:47,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 10:38:47,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:47,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:47,025 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:38:47,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 10:38:47,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 10:38:47,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:38:47,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 10:38:47,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-08-30 10:38:48,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:38:48,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:48,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67079825] [2023-08-30 10:38:48,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:48,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893330550] [2023-08-30 10:38:48,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893330550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:38:48,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:38:48,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:38:48,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648235705] [2023-08-30 10:38:48,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:38:48,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:38:48,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:48,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:38:48,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:38:48,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 425 [2023-08-30 10:38:48,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 81 transitions, 772 flow. Second operand has 7 states, 7 states have (on average 186.14285714285714) internal successors, (1303), 7 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:48,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:48,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 425 [2023-08-30 10:38:48,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:48,662 INFO L130 PetriNetUnfolder]: 201/536 cut-off events. [2023-08-30 10:38:48,662 INFO L131 PetriNetUnfolder]: For 1414/1414 co-relation queries the response was YES. [2023-08-30 10:38:48,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 536 events. 201/536 cut-off events. For 1414/1414 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1868 event pairs, 160 based on Foata normal form. 43/377 useless extension candidates. Maximal degree in co-relation 1519. Up to 468 conditions per place. [2023-08-30 10:38:48,666 INFO L137 encePairwiseOnDemand]: 419/425 looper letters, 79 selfloop transitions, 9 changer transitions 0/92 dead transitions. [2023-08-30 10:38:48,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 92 transitions, 993 flow [2023-08-30 10:38:48,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:38:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:38:48,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1151 transitions. [2023-08-30 10:38:48,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4513725490196078 [2023-08-30 10:38:48,669 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1151 transitions. [2023-08-30 10:38:48,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1151 transitions. [2023-08-30 10:38:48,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:48,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1151 transitions. [2023-08-30 10:38:48,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:48,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:48,675 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:48,675 INFO L175 Difference]: Start difference. First operand has 115 places, 81 transitions, 772 flow. Second operand 6 states and 1151 transitions. [2023-08-30 10:38:48,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 92 transitions, 993 flow [2023-08-30 10:38:48,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 92 transitions, 885 flow, removed 28 selfloop flow, removed 11 redundant places. [2023-08-30 10:38:48,685 INFO L231 Difference]: Finished difference. Result has 107 places, 71 transitions, 561 flow [2023-08-30 10:38:48,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=561, PETRI_PLACES=107, PETRI_TRANSITIONS=71} [2023-08-30 10:38:48,686 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2023-08-30 10:38:48,687 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 71 transitions, 561 flow [2023-08-30 10:38:48,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 186.14285714285714) internal successors, (1303), 7 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:48,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:48,687 INFO L208 CegarLoopForPetriNet]: trace histogram [44, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:38:48,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 10:38:48,896 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 10:38:48,896 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:38:48,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:48,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1846616219, now seen corresponding path program 1 times [2023-08-30 10:38:48,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:48,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437845675] [2023-08-30 10:38:48,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:48,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:49,299 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:49,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [60430921] [2023-08-30 10:38:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:49,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:49,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:49,301 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:38:49,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 10:38:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:38:51,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 10472 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 10:38:51,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:52,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 531 proven. 253 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-08-30 10:38:52,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:38:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 531 proven. 253 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-08-30 10:38:52,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:52,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437845675] [2023-08-30 10:38:52,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:52,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60430921] [2023-08-30 10:38:52,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60430921] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:38:52,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:38:52,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-30 10:38:52,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268411549] [2023-08-30 10:38:52,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:38:52,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 10:38:52,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:52,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 10:38:52,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-30 10:38:52,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 425 [2023-08-30 10:38:52,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 71 transitions, 561 flow. Second operand has 32 states, 32 states have (on average 190.28125) internal successors, (6089), 32 states have internal predecessors, (6089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:52,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:52,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 425 [2023-08-30 10:38:52,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:54,196 INFO L130 PetriNetUnfolder]: 201/568 cut-off events. [2023-08-30 10:38:54,196 INFO L131 PetriNetUnfolder]: For 6922/6922 co-relation queries the response was YES. [2023-08-30 10:38:54,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 568 events. 201/568 cut-off events. For 6922/6922 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1898 event pairs, 160 based on Foata normal form. 24/390 useless extension candidates. Maximal degree in co-relation 1601. Up to 411 conditions per place. [2023-08-30 10:38:54,200 INFO L137 encePairwiseOnDemand]: 421/425 looper letters, 61 selfloop transitions, 39 changer transitions 0/104 dead transitions. [2023-08-30 10:38:54,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 104 transitions, 1160 flow [2023-08-30 10:38:54,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 10:38:54,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 10:38:54,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6147 transitions. [2023-08-30 10:38:54,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45198529411764704 [2023-08-30 10:38:54,212 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6147 transitions. [2023-08-30 10:38:54,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6147 transitions. [2023-08-30 10:38:54,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:54,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6147 transitions. [2023-08-30 10:38:54,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 192.09375) internal successors, (6147), 32 states have internal predecessors, (6147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:54,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 425.0) internal successors, (14025), 33 states have internal predecessors, (14025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:54,239 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 425.0) internal successors, (14025), 33 states have internal predecessors, (14025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:54,239 INFO L175 Difference]: Start difference. First operand has 107 places, 71 transitions, 561 flow. Second operand 32 states and 6147 transitions. [2023-08-30 10:38:54,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 104 transitions, 1160 flow [2023-08-30 10:38:54,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 104 transitions, 1142 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 10:38:54,250 INFO L231 Difference]: Finished difference. Result has 142 places, 80 transitions, 760 flow [2023-08-30 10:38:54,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=760, PETRI_PLACES=142, PETRI_TRANSITIONS=80} [2023-08-30 10:38:54,252 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2023-08-30 10:38:54,252 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 80 transitions, 760 flow [2023-08-30 10:38:54,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 190.28125) internal successors, (6089), 32 states have internal predecessors, (6089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:54,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:54,254 INFO L208 CegarLoopForPetriNet]: trace histogram [60, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:38:54,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 10:38:54,471 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 10:38:54,471 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:38:54,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:54,472 INFO L85 PathProgramCache]: Analyzing trace with hash 547307931, now seen corresponding path program 2 times [2023-08-30 10:38:54,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:54,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191005034] [2023-08-30 10:38:54,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:54,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:54,977 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:54,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309486806] [2023-08-30 10:38:54,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:38:54,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:54,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:54,979 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:38:54,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 10:38:56,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:38:56,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:38:57,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:38:57,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1894 trivial. 0 not checked. [2023-08-30 10:38:57,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:38:57,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:57,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191005034] [2023-08-30 10:38:57,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:57,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309486806] [2023-08-30 10:38:57,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309486806] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:38:57,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:38:57,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:38:57,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560591391] [2023-08-30 10:38:57,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:38:57,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:38:57,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:57,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:38:57,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:38:57,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 425 [2023-08-30 10:38:57,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 80 transitions, 760 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:57,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:57,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 425 [2023-08-30 10:38:57,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:57,268 INFO L130 PetriNetUnfolder]: 163/492 cut-off events. [2023-08-30 10:38:57,268 INFO L131 PetriNetUnfolder]: For 1758/1758 co-relation queries the response was YES. [2023-08-30 10:38:57,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 492 events. 163/492 cut-off events. For 1758/1758 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1524 event pairs, 128 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 1604. Up to 330 conditions per place. [2023-08-30 10:38:57,271 INFO L137 encePairwiseOnDemand]: 423/425 looper letters, 74 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2023-08-30 10:38:57,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 79 transitions, 908 flow [2023-08-30 10:38:57,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:38:57,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:38:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2023-08-30 10:38:57,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47294117647058825 [2023-08-30 10:38:57,273 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2023-08-30 10:38:57,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2023-08-30 10:38:57,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:57,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2023-08-30 10:38:57,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:57,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:57,276 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:57,276 INFO L175 Difference]: Start difference. First operand has 142 places, 80 transitions, 760 flow. Second operand 3 states and 603 transitions. [2023-08-30 10:38:57,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 79 transitions, 908 flow [2023-08-30 10:38:57,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 79 transitions, 833 flow, removed 9 selfloop flow, removed 22 redundant places. [2023-08-30 10:38:57,292 INFO L231 Difference]: Finished difference. Result has 121 places, 79 transitions, 685 flow [2023-08-30 10:38:57,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=685, PETRI_PLACES=121, PETRI_TRANSITIONS=79} [2023-08-30 10:38:57,293 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2023-08-30 10:38:57,293 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 79 transitions, 685 flow [2023-08-30 10:38:57,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:57,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:57,293 INFO L208 CegarLoopForPetriNet]: trace histogram [60, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:38:57,313 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 10:38:57,505 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 10:38:57,506 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:38:57,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:57,506 INFO L85 PathProgramCache]: Analyzing trace with hash 547307930, now seen corresponding path program 1 times [2023-08-30 10:38:57,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:57,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831126315] [2023-08-30 10:38:57,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:57,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:58,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:58,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538474685] [2023-08-30 10:38:58,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:58,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:58,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:58,021 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:38:58,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 10:39:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:39:02,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 14216 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:39:02,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:39:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-08-30 10:39:02,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:39:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-08-30 10:39:02,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:39:02,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831126315] [2023-08-30 10:39:02,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:39:02,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538474685] [2023-08-30 10:39:02,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538474685] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:39:02,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:39:02,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-08-30 10:39:02,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203967010] [2023-08-30 10:39:02,290 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:39:02,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:39:02,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:39:02,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:39:02,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:39:02,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 425 [2023-08-30 10:39:02,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 79 transitions, 685 flow. Second operand has 8 states, 8 states have (on average 191.375) internal successors, (1531), 8 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:02,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:39:02,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 425 [2023-08-30 10:39:02,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:39:03,160 INFO L130 PetriNetUnfolder]: 174/497 cut-off events. [2023-08-30 10:39:03,161 INFO L131 PetriNetUnfolder]: For 4595/4595 co-relation queries the response was YES. [2023-08-30 10:39:03,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2422 conditions, 497 events. 174/497 cut-off events. For 4595/4595 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 762 event pairs, 64 based on Foata normal form. 4/425 useless extension candidates. Maximal degree in co-relation 2366. Up to 181 conditions per place. [2023-08-30 10:39:03,165 INFO L137 encePairwiseOnDemand]: 420/425 looper letters, 219 selfloop transitions, 28 changer transitions 0/251 dead transitions. [2023-08-30 10:39:03,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 251 transitions, 2846 flow [2023-08-30 10:39:03,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:39:03,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:39:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1567 transitions. [2023-08-30 10:39:03,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46088235294117647 [2023-08-30 10:39:03,168 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1567 transitions. [2023-08-30 10:39:03,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1567 transitions. [2023-08-30 10:39:03,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:39:03,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1567 transitions. [2023-08-30 10:39:03,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 195.875) internal successors, (1567), 8 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:03,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 425.0) internal successors, (3825), 9 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:03,174 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 425.0) internal successors, (3825), 9 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:03,175 INFO L175 Difference]: Start difference. First operand has 121 places, 79 transitions, 685 flow. Second operand 8 states and 1567 transitions. [2023-08-30 10:39:03,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 251 transitions, 2846 flow [2023-08-30 10:39:03,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 251 transitions, 2845 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:39:03,193 INFO L231 Difference]: Finished difference. Result has 132 places, 98 transitions, 1214 flow [2023-08-30 10:39:03,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1214, PETRI_PLACES=132, PETRI_TRANSITIONS=98} [2023-08-30 10:39:03,193 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2023-08-30 10:39:03,194 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 98 transitions, 1214 flow [2023-08-30 10:39:03,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 191.375) internal successors, (1531), 8 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:03,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:39:03,194 INFO L208 CegarLoopForPetriNet]: trace histogram [62, 3, 2, 1, 1] [2023-08-30 10:39:03,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-30 10:39:03,421 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 10:39:03,421 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:39:03,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:39:03,421 INFO L85 PathProgramCache]: Analyzing trace with hash 548777071, now seen corresponding path program 4 times [2023-08-30 10:39:03,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:39:03,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113243756] [2023-08-30 10:39:03,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:03,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:39:03,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:39:03,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063330168] [2023-08-30 10:39:03,928 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 10:39:03,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:03,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:39:03,929 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:39:03,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 10:41:32,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 10:41:32,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:41:32,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 14680 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 10:41:32,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:41:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2023-08-30 10:41:32,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:41:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2023-08-30 10:41:42,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:41:42,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113243756] [2023-08-30 10:41:42,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:41:42,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063330168] [2023-08-30 10:41:42,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063330168] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:41:42,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:41:42,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-08-30 10:41:42,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490422878] [2023-08-30 10:41:42,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:41:42,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:41:42,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:41:42,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:41:42,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=33, Unknown=1, NotChecked=0, Total=56 [2023-08-30 10:41:44,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-30 10:41:47,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-30 10:41:49,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-30 10:41:51,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-30 10:41:53,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 10:41:55,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-30 10:41:57,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-30 10:41:58,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-30 10:41:59,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 425 [2023-08-30 10:41:59,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 98 transitions, 1214 flow. Second operand has 8 states, 8 states have (on average 185.5) internal successors, (1484), 8 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:59,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:41:59,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 425 [2023-08-30 10:41:59,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:42:03,655 INFO L130 PetriNetUnfolder]: 86/381 cut-off events. [2023-08-30 10:42:03,655 INFO L131 PetriNetUnfolder]: For 5639/5639 co-relation queries the response was YES. [2023-08-30 10:42:03,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1611 conditions, 381 events. 86/381 cut-off events. For 5639/5639 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 640 event pairs, 64 based on Foata normal form. 116/421 useless extension candidates. Maximal degree in co-relation 1549. Up to 181 conditions per place. [2023-08-30 10:42:03,657 INFO L137 encePairwiseOnDemand]: 421/425 looper letters, 155 selfloop transitions, 9 changer transitions 0/168 dead transitions. [2023-08-30 10:42:03,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 168 transitions, 1910 flow [2023-08-30 10:42:03,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:42:03,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:42:03,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1324 transitions. [2023-08-30 10:42:03,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4450420168067227 [2023-08-30 10:42:03,660 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1324 transitions. [2023-08-30 10:42:03,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1324 transitions. [2023-08-30 10:42:03,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:42:03,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1324 transitions. [2023-08-30 10:42:03,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 189.14285714285714) internal successors, (1324), 7 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:03,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 425.0) internal successors, (3400), 8 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:03,664 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 425.0) internal successors, (3400), 8 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:03,664 INFO L175 Difference]: Start difference. First operand has 132 places, 98 transitions, 1214 flow. Second operand 7 states and 1324 transitions. [2023-08-30 10:42:03,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 168 transitions, 1910 flow [2023-08-30 10:42:03,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 168 transitions, 1378 flow, removed 220 selfloop flow, removed 13 redundant places. [2023-08-30 10:42:03,680 INFO L231 Difference]: Finished difference. Result has 125 places, 79 transitions, 712 flow [2023-08-30 10:42:03,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=712, PETRI_PLACES=125, PETRI_TRANSITIONS=79} [2023-08-30 10:42:03,681 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 84 predicate places. [2023-08-30 10:42:03,681 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 79 transitions, 712 flow [2023-08-30 10:42:03,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 185.5) internal successors, (1484), 8 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:03,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:42:03,682 INFO L208 CegarLoopForPetriNet]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1] [2023-08-30 10:42:03,901 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process [2023-08-30 10:42:03,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 137 [2023-08-30 10:42:03,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-30 10:42:03,964 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:42:03,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:42:03,965 INFO L85 PathProgramCache]: Analyzing trace with hash -200176094, now seen corresponding path program 2 times [2023-08-30 10:42:03,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:42:03,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830755293] [2023-08-30 10:42:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:03,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:42:05,346 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:42:05,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61682834] [2023-08-30 10:42:05,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:42:05,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:42:05,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:42:05,349 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:42:05,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 10:42:11,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:42:11,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:42:11,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:42:11,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:42:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17226 trivial. 0 not checked. [2023-08-30 10:42:11,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:42:11,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:42:11,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830755293] [2023-08-30 10:42:11,547 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:42:11,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61682834] [2023-08-30 10:42:11,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61682834] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:42:11,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:42:11,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:42:11,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846043485] [2023-08-30 10:42:11,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:42:11,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:42:11,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:42:11,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:42:11,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:42:11,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 425 [2023-08-30 10:42:11,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 79 transitions, 712 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:11,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:42:11,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 425 [2023-08-30 10:42:11,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:42:11,979 INFO L130 PetriNetUnfolder]: 67/344 cut-off events. [2023-08-30 10:42:11,979 INFO L131 PetriNetUnfolder]: For 3261/3261 co-relation queries the response was YES. [2023-08-30 10:42:11,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1164 conditions, 344 events. 67/344 cut-off events. For 3261/3261 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 539 event pairs, 22 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 1111. Up to 309 conditions per place. [2023-08-30 10:42:11,980 INFO L137 encePairwiseOnDemand]: 421/425 looper letters, 91 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2023-08-30 10:42:11,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 97 transitions, 934 flow [2023-08-30 10:42:11,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:42:11,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:42:11,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-08-30 10:42:11,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48705882352941177 [2023-08-30 10:42:11,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-08-30 10:42:11,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-08-30 10:42:11,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:42:11,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-08-30 10:42:11,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:11,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:11,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:11,985 INFO L175 Difference]: Start difference. First operand has 125 places, 79 transitions, 712 flow. Second operand 3 states and 621 transitions. [2023-08-30 10:42:11,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 97 transitions, 934 flow [2023-08-30 10:42:11,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 97 transitions, 927 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 10:42:11,992 INFO L231 Difference]: Finished difference. Result has 123 places, 78 transitions, 711 flow [2023-08-30 10:42:11,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=711, PETRI_PLACES=123, PETRI_TRANSITIONS=78} [2023-08-30 10:42:11,992 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2023-08-30 10:42:11,992 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 78 transitions, 711 flow [2023-08-30 10:42:11,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:11,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:42:11,993 INFO L208 CegarLoopForPetriNet]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:42:12,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 10:42:12,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:42:12,193 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:42:12,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:42:12,194 INFO L85 PathProgramCache]: Analyzing trace with hash 904355494, now seen corresponding path program 1 times [2023-08-30 10:42:12,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:42:12,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591998401] [2023-08-30 10:42:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:12,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:42:13,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:42:13,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [830969647] [2023-08-30 10:42:13,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:13,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:42:13,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:42:13,717 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:42:13,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 10:42:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:42:27,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 42489 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 10:42:27,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:42:27,468 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2023-08-30 10:42:27,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:42:27,750 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2023-08-30 10:42:27,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:42:27,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591998401] [2023-08-30 10:42:27,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:42:27,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830969647] [2023-08-30 10:42:27,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830969647] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:42:27,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:42:27,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-08-30 10:42:27,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50688921] [2023-08-30 10:42:27,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:42:27,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 10:42:27,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:42:27,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 10:42:27,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 10:42:27,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 425 [2023-08-30 10:42:27,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 78 transitions, 711 flow. Second operand has 12 states, 12 states have (on average 192.0) internal successors, (2304), 12 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:27,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:42:27,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 425 [2023-08-30 10:42:27,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:42:28,828 INFO L130 PetriNetUnfolder]: 71/473 cut-off events. [2023-08-30 10:42:28,829 INFO L131 PetriNetUnfolder]: For 5540/5540 co-relation queries the response was YES. [2023-08-30 10:42:28,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1763 conditions, 473 events. 71/473 cut-off events. For 5540/5540 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 493 event pairs, 48 based on Foata normal form. 4/442 useless extension candidates. Maximal degree in co-relation 1710. Up to 131 conditions per place. [2023-08-30 10:42:28,832 INFO L137 encePairwiseOnDemand]: 421/425 looper letters, 346 selfloop transitions, 12 changer transitions 0/362 dead transitions. [2023-08-30 10:42:28,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 362 transitions, 2908 flow [2023-08-30 10:42:28,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:42:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:42:28,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2330 transitions. [2023-08-30 10:42:28,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4568627450980392 [2023-08-30 10:42:28,837 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2330 transitions. [2023-08-30 10:42:28,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2330 transitions. [2023-08-30 10:42:28,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:42:28,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2330 transitions. [2023-08-30 10:42:28,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 194.16666666666666) internal successors, (2330), 12 states have internal predecessors, (2330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:28,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 425.0) internal successors, (5525), 13 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:28,849 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 425.0) internal successors, (5525), 13 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:28,850 INFO L175 Difference]: Start difference. First operand has 123 places, 78 transitions, 711 flow. Second operand 12 states and 2330 transitions. [2023-08-30 10:42:28,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 362 transitions, 2908 flow [2023-08-30 10:42:28,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 362 transitions, 2904 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:42:28,866 INFO L231 Difference]: Finished difference. Result has 137 places, 83 transitions, 1043 flow [2023-08-30 10:42:28,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1043, PETRI_PLACES=137, PETRI_TRANSITIONS=83} [2023-08-30 10:42:28,867 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 96 predicate places. [2023-08-30 10:42:28,867 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 83 transitions, 1043 flow [2023-08-30 10:42:28,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 192.0) internal successors, (2304), 12 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:28,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:42:28,868 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:42:28,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 10:42:29,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 10:42:29,081 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:42:29,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:42:29,081 INFO L85 PathProgramCache]: Analyzing trace with hash 348662062, now seen corresponding path program 2 times [2023-08-30 10:42:29,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:42:29,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876017680] [2023-08-30 10:42:29,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:29,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:42:31,500 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:42:31,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634991452] [2023-08-30 10:42:31,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:42:31,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:42:31,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:42:31,502 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:42:31,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 10:42:43,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:42:43,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:42:43,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 10:42:43,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:42:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-30 10:42:43,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:42:43,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:42:43,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876017680] [2023-08-30 10:42:43,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:42:43,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634991452] [2023-08-30 10:42:43,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634991452] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:42:43,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:42:43,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:42:43,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125169960] [2023-08-30 10:42:43,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:42:43,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:42:43,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:42:43,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:42:43,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:42:43,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 425 [2023-08-30 10:42:43,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 83 transitions, 1043 flow. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:43,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:42:43,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 425 [2023-08-30 10:42:43,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:42:44,080 INFO L130 PetriNetUnfolder]: 68/467 cut-off events. [2023-08-30 10:42:44,080 INFO L131 PetriNetUnfolder]: For 5967/5967 co-relation queries the response was YES. [2023-08-30 10:42:44,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 467 events. 68/467 cut-off events. For 5967/5967 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 431 event pairs, 0 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 1700. Up to 339 conditions per place. [2023-08-30 10:42:44,083 INFO L137 encePairwiseOnDemand]: 423/425 looper letters, 80 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2023-08-30 10:42:44,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 85 transitions, 1212 flow [2023-08-30 10:42:44,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:42:44,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:42:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 606 transitions. [2023-08-30 10:42:44,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4752941176470588 [2023-08-30 10:42:44,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 606 transitions. [2023-08-30 10:42:44,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 606 transitions. [2023-08-30 10:42:44,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:42:44,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 606 transitions. [2023-08-30 10:42:44,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:44,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:44,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:44,088 INFO L175 Difference]: Start difference. First operand has 137 places, 83 transitions, 1043 flow. Second operand 3 states and 606 transitions. [2023-08-30 10:42:44,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 85 transitions, 1212 flow [2023-08-30 10:42:44,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 85 transitions, 1202 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 10:42:44,103 INFO L231 Difference]: Finished difference. Result has 133 places, 82 transitions, 1033 flow [2023-08-30 10:42:44,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1033, PETRI_PLACES=133, PETRI_TRANSITIONS=82} [2023-08-30 10:42:44,104 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2023-08-30 10:42:44,104 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 82 transitions, 1033 flow [2023-08-30 10:42:44,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:44,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:42:44,105 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:42:44,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 10:42:44,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 10:42:44,321 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:42:44,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:42:44,321 INFO L85 PathProgramCache]: Analyzing trace with hash 348662083, now seen corresponding path program 1 times [2023-08-30 10:42:44,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:42:44,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794649346] [2023-08-30 10:42:44,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:44,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:42:46,983 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:42:46,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464106864] [2023-08-30 10:42:46,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:46,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:42:46,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:42:46,984 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:42:46,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 10:43:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:43:10,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 70729 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:43:10,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:43:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-30 10:43:10,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:43:10,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:43:10,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794649346] [2023-08-30 10:43:10,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:43:10,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464106864] [2023-08-30 10:43:10,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464106864] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:43:10,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:43:10,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:43:10,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263325222] [2023-08-30 10:43:10,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:43:10,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:43:10,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:43:10,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:43:10,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:43:10,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 425 [2023-08-30 10:43:10,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 82 transitions, 1033 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:10,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:43:10,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 425 [2023-08-30 10:43:10,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:43:11,219 INFO L130 PetriNetUnfolder]: 65/461 cut-off events. [2023-08-30 10:43:11,219 INFO L131 PetriNetUnfolder]: For 5805/5805 co-relation queries the response was YES. [2023-08-30 10:43:11,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1745 conditions, 461 events. 65/461 cut-off events. For 5805/5805 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 410 event pairs, 6 based on Foata normal form. 0/436 useless extension candidates. Maximal degree in co-relation 1686. Up to 360 conditions per place. [2023-08-30 10:43:11,221 INFO L137 encePairwiseOnDemand]: 422/425 looper letters, 78 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-30 10:43:11,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 84 transitions, 1200 flow [2023-08-30 10:43:11,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:43:11,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:43:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 602 transitions. [2023-08-30 10:43:11,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47215686274509805 [2023-08-30 10:43:11,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 602 transitions. [2023-08-30 10:43:11,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 602 transitions. [2023-08-30 10:43:11,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:43:11,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 602 transitions. [2023-08-30 10:43:11,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:11,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:11,225 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:11,225 INFO L175 Difference]: Start difference. First operand has 133 places, 82 transitions, 1033 flow. Second operand 3 states and 602 transitions. [2023-08-30 10:43:11,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 84 transitions, 1200 flow [2023-08-30 10:43:11,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 84 transitions, 1199 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:43:11,239 INFO L231 Difference]: Finished difference. Result has 133 places, 81 transitions, 1034 flow [2023-08-30 10:43:11,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1034, PETRI_PLACES=133, PETRI_TRANSITIONS=81} [2023-08-30 10:43:11,239 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2023-08-30 10:43:11,240 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 81 transitions, 1034 flow [2023-08-30 10:43:11,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:11,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:43:11,240 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:43:11,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 10:43:11,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 10:43:11,454 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:43:11,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:43:11,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1744744717, now seen corresponding path program 1 times [2023-08-30 10:43:11,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:43:11,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300543886] [2023-08-30 10:43:11,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:43:11,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:43:14,351 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:43:14,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707530412] [2023-08-30 10:43:14,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:43:14,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:43:14,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:43:14,365 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:43:14,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 10:43:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:43:41,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 70722 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:43:41,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:43:41,457 INFO L134 CoverageAnalysis]: Checked inductivity of 47951 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-30 10:43:41,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:43:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 47951 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-30 10:43:41,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:43:41,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300543886] [2023-08-30 10:43:41,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:43:41,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707530412] [2023-08-30 10:43:41,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707530412] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:43:41,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:43:41,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-30 10:43:41,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742296385] [2023-08-30 10:43:41,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:43:41,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:43:41,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:43:41,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:43:41,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:43:41,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 425 [2023-08-30 10:43:41,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 81 transitions, 1034 flow. Second operand has 6 states, 6 states have (on average 192.33333333333334) internal successors, (1154), 6 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:41,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:43:41,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 425 [2023-08-30 10:43:41,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:43:42,066 INFO L130 PetriNetUnfolder]: 46/431 cut-off events. [2023-08-30 10:43:42,066 INFO L131 PetriNetUnfolder]: For 5792/5792 co-relation queries the response was YES. [2023-08-30 10:43:42,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1683 conditions, 431 events. 46/431 cut-off events. For 5792/5792 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 358 event pairs, 0 based on Foata normal form. 15/431 useless extension candidates. Maximal degree in co-relation 1624. Up to 333 conditions per place. [2023-08-30 10:43:42,069 INFO L137 encePairwiseOnDemand]: 422/425 looper letters, 86 selfloop transitions, 2 changer transitions 2/94 dead transitions. [2023-08-30 10:43:42,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 94 transitions, 1240 flow [2023-08-30 10:43:42,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:43:42,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:43:42,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 798 transitions. [2023-08-30 10:43:42,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46941176470588236 [2023-08-30 10:43:42,077 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 798 transitions. [2023-08-30 10:43:42,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 798 transitions. [2023-08-30 10:43:42,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:43:42,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 798 transitions. [2023-08-30 10:43:42,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 199.5) internal successors, (798), 4 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:42,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:42,080 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:42,080 INFO L175 Difference]: Start difference. First operand has 133 places, 81 transitions, 1034 flow. Second operand 4 states and 798 transitions. [2023-08-30 10:43:42,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 94 transitions, 1240 flow [2023-08-30 10:43:42,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 94 transitions, 1230 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:43:42,095 INFO L231 Difference]: Finished difference. Result has 129 places, 76 transitions, 1017 flow [2023-08-30 10:43:42,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1017, PETRI_PLACES=129, PETRI_TRANSITIONS=76} [2023-08-30 10:43:42,095 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2023-08-30 10:43:42,096 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 76 transitions, 1017 flow [2023-08-30 10:43:42,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.33333333333334) internal successors, (1154), 6 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:42,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:43:42,096 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:43:42,305 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forcibly destroying the process [2023-08-30 10:43:42,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 137 [2023-08-30 10:43:42,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 10:43:42,331 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:43:42,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:43:42,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1754901796, now seen corresponding path program 1 times [2023-08-30 10:43:42,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:43:42,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158266132] [2023-08-30 10:43:42,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:43:42,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:43:45,313 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:43:45,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072242352] [2023-08-30 10:43:45,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:43:45,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:43:45,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:43:45,314 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:43:45,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process Killed by 15