./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 09:38:46,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 09:38:46,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 09:38:46,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 09:38:46,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 09:38:46,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 09:38:46,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 09:38:46,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 09:38:46,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 09:38:46,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 09:38:46,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 09:38:46,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 09:38:46,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 09:38:46,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 09:38:46,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 09:38:46,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 09:38:46,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 09:38:46,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 09:38:46,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 09:38:46,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 09:38:46,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 09:38:46,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 09:38:46,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 09:38:46,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 09:38:46,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 09:38:46,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 09:38:46,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 09:38:46,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 09:38:46,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 09:38:46,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 09:38:46,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 09:38:46,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 09:38:46,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 09:38:46,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 09:38:46,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 09:38:46,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 09:38:46,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 09:38:46,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 09:38:46,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 09:38:46,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 09:38:46,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 09:38:46,770 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 09:38:46,809 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 09:38:46,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 09:38:46,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 09:38:46,811 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 09:38:46,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 09:38:46,812 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 09:38:46,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 09:38:46,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 09:38:46,813 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 09:38:46,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 09:38:46,814 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 09:38:46,814 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 09:38:46,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 09:38:46,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 09:38:46,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 09:38:46,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 09:38:46,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 09:38:46,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 09:38:46,815 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 09:38:46,815 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 09:38:46,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 09:38:46,815 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 09:38:46,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 09:38:46,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 09:38:46,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 09:38:46,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 09:38:46,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:38:46,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 09:38:46,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 09:38:46,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 09:38:46,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 09:38:46,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 09:38:46,818 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 09:38:46,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 09:38:46,818 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 09:38:46,818 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 09:38:46,818 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 09:38:46,818 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 09:38:47,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 09:38:47,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 09:38:47,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 09:38:47,159 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 09:38:47,159 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 09:38:47,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-08-30 09:38:48,316 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 09:38:48,550 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 09:38:48,550 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-08-30 09:38:48,563 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73bbb99d3/acd115e652754201a803dd3ea3c39724/FLAG6bdadd3d6 [2023-08-30 09:38:48,575 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73bbb99d3/acd115e652754201a803dd3ea3c39724 [2023-08-30 09:38:48,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 09:38:48,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 09:38:48,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 09:38:48,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 09:38:48,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 09:38:48,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:38:48" (1/1) ... [2023-08-30 09:38:48,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22fd21cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:38:48, skipping insertion in model container [2023-08-30 09:38:48,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:38:48" (1/1) ... [2023-08-30 09:38:48,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 09:38:48,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 09:38:49,018 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 09:38:49,018 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 09:38:49,020 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 09:38:49,021 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 09:38:49,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:38:49,077 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 09:38:49,120 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 09:38:49,120 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 09:38:49,121 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 09:38:49,121 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 09:38:49,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:38:49,210 INFO L208 MainTranslator]: Completed translation [2023-08-30 09:38:49,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:38:49 WrapperNode [2023-08-30 09:38:49,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 09:38:49,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 09:38:49,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 09:38:49,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 09:38:49,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:38:49" (1/1) ... [2023-08-30 09:38:49,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:38:49" (1/1) ... [2023-08-30 09:38:49,289 INFO L138 Inliner]: procedures = 273, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 170 [2023-08-30 09:38:49,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 09:38:49,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 09:38:49,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 09:38:49,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 09:38:49,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:38:49" (1/1) ... [2023-08-30 09:38:49,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:38:49" (1/1) ... [2023-08-30 09:38:49,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:38:49" (1/1) ... [2023-08-30 09:38:49,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:38:49" (1/1) ... [2023-08-30 09:38:49,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:38:49" (1/1) ... [2023-08-30 09:38:49,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:38:49" (1/1) ... [2023-08-30 09:38:49,336 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:38:49" (1/1) ... [2023-08-30 09:38:49,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:38:49" (1/1) ... [2023-08-30 09:38:49,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 09:38:49,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 09:38:49,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 09:38:49,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 09:38:49,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:38:49" (1/1) ... [2023-08-30 09:38:49,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:38:49,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:38:49,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 09:38:49,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 09:38:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-08-30 09:38:49,433 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-08-30 09:38:49,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 09:38:49,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 09:38:49,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 09:38:49,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 09:38:49,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 09:38:49,433 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 09:38:49,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 09:38:49,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 09:38:49,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 09:38:49,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 09:38:49,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 09:38:49,435 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 09:38:49,625 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 09:38:49,629 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 09:38:50,006 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 09:38:50,013 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 09:38:50,013 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 09:38:50,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:38:50 BoogieIcfgContainer [2023-08-30 09:38:50,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 09:38:50,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 09:38:50,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 09:38:50,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 09:38:50,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:38:48" (1/3) ... [2023-08-30 09:38:50,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e323e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:38:50, skipping insertion in model container [2023-08-30 09:38:50,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:38:49" (2/3) ... [2023-08-30 09:38:50,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e323e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:38:50, skipping insertion in model container [2023-08-30 09:38:50,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:38:50" (3/3) ... [2023-08-30 09:38:50,024 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2023-08-30 09:38:50,030 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 09:38:50,038 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 09:38:50,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 09:38:50,038 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 09:38:50,115 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 09:38:50,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 240 transitions, 490 flow [2023-08-30 09:38:50,215 INFO L130 PetriNetUnfolder]: 17/238 cut-off events. [2023-08-30 09:38:50,215 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:38:50,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 238 events. 17/238 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 538 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 181. Up to 2 conditions per place. [2023-08-30 09:38:50,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 240 transitions, 490 flow [2023-08-30 09:38:50,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 238 transitions, 482 flow [2023-08-30 09:38:50,229 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:38:50,246 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 238 transitions, 482 flow [2023-08-30 09:38:50,250 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 238 transitions, 482 flow [2023-08-30 09:38:50,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 238 transitions, 482 flow [2023-08-30 09:38:50,307 INFO L130 PetriNetUnfolder]: 17/238 cut-off events. [2023-08-30 09:38:50,307 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:38:50,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 238 events. 17/238 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 539 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 181. Up to 2 conditions per place. [2023-08-30 09:38:50,314 INFO L119 LiptonReduction]: Number of co-enabled transitions 7154 [2023-08-30 09:39:21,241 WARN L222 SmtUtils]: Spent 12.02s on a formula simplification. DAG size of input: 187 DAG size of output: 185 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:39:27,099 WARN L222 SmtUtils]: Spent 5.85s on a formula simplification that was a NOOP. DAG size: 177 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:39:39,543 WARN L222 SmtUtils]: Spent 12.43s on a formula simplification. DAG size of input: 187 DAG size of output: 185 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:39:45,346 WARN L222 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 177 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:40:03,176 WARN L222 SmtUtils]: Spent 17.83s on a formula simplification. DAG size of input: 188 DAG size of output: 187 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:40:09,857 WARN L222 SmtUtils]: Spent 6.68s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:40:23,250 WARN L222 SmtUtils]: Spent 13.39s on a formula simplification. DAG size of input: 190 DAG size of output: 188 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:40:29,658 WARN L222 SmtUtils]: Spent 6.40s 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 09:40:29,734 INFO L134 LiptonReduction]: Checked pairs total: 7233 [2023-08-30 09:40:29,735 INFO L136 LiptonReduction]: Total number of compositions: 261 [2023-08-30 09:40:29,746 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:40:29,750 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;@37a6f62a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:40:29,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 09:40:29,755 INFO L130 PetriNetUnfolder]: 2/5 cut-off events. [2023-08-30 09:40:29,755 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:40:29,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:40:29,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 09:40:29,757 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:40:29,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:40:29,761 INFO L85 PathProgramCache]: Analyzing trace with hash 803560, now seen corresponding path program 1 times [2023-08-30 09:40:29,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:40:29,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046059411] [2023-08-30 09:40:29,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:29,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:40:29,890 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:40:29,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248738184] [2023-08-30 09:40:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:29,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:29,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:40:29,897 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:40:29,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 09:40:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:40:30,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:40:30,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:40:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:40:30,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:40:30,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:40:30,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046059411] [2023-08-30 09:40:30,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:40:30,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248738184] [2023-08-30 09:40:30,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248738184] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:40:30,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:40:30,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:40:30,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990168842] [2023-08-30 09:40:30,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:40:30,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:40:30,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:40:30,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:40:30,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:40:30,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 501 [2023-08-30 09:40:30,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:30,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:40:30,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 501 [2023-08-30 09:40:30,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:40:30,580 INFO L130 PetriNetUnfolder]: 436/710 cut-off events. [2023-08-30 09:40:30,580 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 09:40:30,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 710 events. 436/710 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2790 event pairs, 340 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 1412. Up to 706 conditions per place. [2023-08-30 09:40:30,591 INFO L137 encePairwiseOnDemand]: 492/501 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-30 09:40:30,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 174 flow [2023-08-30 09:40:30,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:40:30,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:40:30,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2023-08-30 09:40:30,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47571523619427813 [2023-08-30 09:40:30,614 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2023-08-30 09:40:30,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2023-08-30 09:40:30,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:40:30,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2023-08-30 09:40:30,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:30,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:30,637 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:30,639 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 84 flow. Second operand 3 states and 715 transitions. [2023-08-30 09:40:30,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 174 flow [2023-08-30 09:40:30,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:40:30,643 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 110 flow [2023-08-30 09:40:30,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-08-30 09:40:30,649 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-30 09:40:30,650 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 110 flow [2023-08-30 09:40:30,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:30,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:40:30,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 09:40:30,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 09:40:30,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-08-30 09:40:30,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:40:30,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:40:30,857 INFO L85 PathProgramCache]: Analyzing trace with hash 803757, now seen corresponding path program 1 times [2023-08-30 09:40:30,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:40:30,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453915047] [2023-08-30 09:40:30,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:30,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:40:30,918 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:40:30,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317645466] [2023-08-30 09:40:30,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:30,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:30,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:40:30,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:40:30,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 09:40:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:40:31,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:40:31,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:40:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:40:31,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:40:31,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:40:31,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453915047] [2023-08-30 09:40:31,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:40:31,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317645466] [2023-08-30 09:40:31,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317645466] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:40:31,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:40:31,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:40:31,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323388606] [2023-08-30 09:40:31,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:40:31,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:40:31,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:40:31,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:40:31,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:40:31,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 501 [2023-08-30 09:40:31,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:31,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:40:31,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 501 [2023-08-30 09:40:31,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:40:31,300 INFO L130 PetriNetUnfolder]: 435/708 cut-off events. [2023-08-30 09:40:31,300 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 09:40:31,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 708 events. 435/708 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2776 event pairs, 340 based on Foata normal form. 2/430 useless extension candidates. Maximal degree in co-relation 1438. Up to 707 conditions per place. [2023-08-30 09:40:31,304 INFO L137 encePairwiseOnDemand]: 499/501 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 09:40:31,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 180 flow [2023-08-30 09:40:31,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:40:31,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:40:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 711 transitions. [2023-08-30 09:40:31,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47305389221556887 [2023-08-30 09:40:31,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 711 transitions. [2023-08-30 09:40:31,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 711 transitions. [2023-08-30 09:40:31,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:40:31,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 711 transitions. [2023-08-30 09:40:31,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:31,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:31,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:31,313 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 110 flow. Second operand 3 states and 711 transitions. [2023-08-30 09:40:31,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 180 flow [2023-08-30 09:40:31,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:40:31,315 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 103 flow [2023-08-30 09:40:31,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-08-30 09:40:31,316 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-30 09:40:31,316 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 103 flow [2023-08-30 09:40:31,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:31,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:40:31,317 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-30 09:40:31,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 09:40:31,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-08-30 09:40:31,523 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:40:31,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:40:31,524 INFO L85 PathProgramCache]: Analyzing trace with hash 772382772, now seen corresponding path program 1 times [2023-08-30 09:40:31,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:40:31,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758346467] [2023-08-30 09:40:31,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:31,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:40:31,564 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:40:31,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132154465] [2023-08-30 09:40:31,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:31,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:31,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:40:31,565 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:40:31,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 09:40:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:40:31,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-30 09:40:31,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:40:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:40:31,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:40:31,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:40:31,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758346467] [2023-08-30 09:40:31,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:40:31,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132154465] [2023-08-30 09:40:31,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132154465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:40:31,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:40:31,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:40:31,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130974736] [2023-08-30 09:40:31,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:40:31,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:40:31,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:40:31,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:40:31,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:40:31,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 501 [2023-08-30 09:40:31,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:31,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:40:31,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 501 [2023-08-30 09:40:31,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:40:31,914 INFO L130 PetriNetUnfolder]: 435/712 cut-off events. [2023-08-30 09:40:31,914 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:40:31,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 712 events. 435/712 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2773 event pairs, 340 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 1454. Up to 709 conditions per place. [2023-08-30 09:40:31,917 INFO L137 encePairwiseOnDemand]: 496/501 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-30 09:40:31,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 197 flow [2023-08-30 09:40:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:40:31,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:40:31,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2023-08-30 09:40:31,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47571523619427813 [2023-08-30 09:40:31,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2023-08-30 09:40:31,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2023-08-30 09:40:31,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:40:31,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2023-08-30 09:40:31,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:31,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:31,927 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:31,927 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 103 flow. Second operand 3 states and 715 transitions. [2023-08-30 09:40:31,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 197 flow [2023-08-30 09:40:31,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 197 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:40:31,929 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 124 flow [2023-08-30 09:40:31,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-30 09:40:31,931 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-08-30 09:40:31,931 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 124 flow [2023-08-30 09:40:31,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:31,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:40:31,932 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 09:40:31,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 09:40:32,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:32,138 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:40:32,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:40:32,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1824312908, now seen corresponding path program 1 times [2023-08-30 09:40:32,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:40:32,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125502191] [2023-08-30 09:40:32,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:32,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:40:32,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:40:32,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141797010] [2023-08-30 09:40:32,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:32,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:32,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:40:32,169 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:40:32,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 09:40:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:40:32,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:40:32,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:40:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:40:32,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:40:32,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:40:32,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:40:32,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125502191] [2023-08-30 09:40:32,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:40:32,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141797010] [2023-08-30 09:40:32,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141797010] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:40:32,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 09:40:32,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-30 09:40:32,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99659410] [2023-08-30 09:40:32,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 09:40:32,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 09:40:32,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:40:32,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 09:40:32,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 09:40:32,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-08-30 09:40:32,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:32,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:40:32,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-08-30 09:40:32,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:40:32,805 INFO L130 PetriNetUnfolder]: 437/724 cut-off events. [2023-08-30 09:40:32,806 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 09:40:32,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 724 events. 437/724 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2833 event pairs, 340 based on Foata normal form. 6/447 useless extension candidates. Maximal degree in co-relation 1501. Up to 707 conditions per place. [2023-08-30 09:40:32,810 INFO L137 encePairwiseOnDemand]: 494/501 looper letters, 43 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2023-08-30 09:40:32,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 270 flow [2023-08-30 09:40:32,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:40:32,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:40:32,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1396 transitions. [2023-08-30 09:40:32,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4644045242847638 [2023-08-30 09:40:32,814 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1396 transitions. [2023-08-30 09:40:32,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1396 transitions. [2023-08-30 09:40:32,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:40:32,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1396 transitions. [2023-08-30 09:40:32,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 232.66666666666666) internal successors, (1396), 6 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:32,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:32,823 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:32,824 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 124 flow. Second operand 6 states and 1396 transitions. [2023-08-30 09:40:32,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 270 flow [2023-08-30 09:40:32,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:40:32,833 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 200 flow [2023-08-30 09:40:32,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2023-08-30 09:40:32,834 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2023-08-30 09:40:32,835 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 200 flow [2023-08-30 09:40:32,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:32,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:40:32,836 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-30 09:40:32,847 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 09:40:33,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:33,042 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:40:33,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:40:33,043 INFO L85 PathProgramCache]: Analyzing trace with hash 2023882804, now seen corresponding path program 2 times [2023-08-30 09:40:33,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:40:33,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852307743] [2023-08-30 09:40:33,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:33,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:40:33,116 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:40:33,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20560648] [2023-08-30 09:40:33,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:40:33,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:33,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:40:33,118 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:40:33,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 09:40:33,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 09:40:33,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:40:33,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:40:33,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:40:33,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-30 09:40:33,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:40:33,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:40:33,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852307743] [2023-08-30 09:40:33,312 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:40:33,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20560648] [2023-08-30 09:40:33,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20560648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:40:33,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:40:33,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:40:33,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827693424] [2023-08-30 09:40:33,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:40:33,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:40:33,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:40:33,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:40:33,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:40:33,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 501 [2023-08-30 09:40:33,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:33,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:40:33,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 501 [2023-08-30 09:40:33,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:40:33,662 INFO L130 PetriNetUnfolder]: 437/722 cut-off events. [2023-08-30 09:40:33,662 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 09:40:33,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 722 events. 437/722 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2814 event pairs, 340 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1533. Up to 721 conditions per place. [2023-08-30 09:40:33,666 INFO L137 encePairwiseOnDemand]: 497/501 looper letters, 42 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-08-30 09:40:33,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 290 flow [2023-08-30 09:40:33,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:40:33,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:40:33,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2023-08-30 09:40:33,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697272122421823 [2023-08-30 09:40:33,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 706 transitions. [2023-08-30 09:40:33,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 706 transitions. [2023-08-30 09:40:33,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:40:33,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 706 transitions. [2023-08-30 09:40:33,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:33,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:33,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:33,674 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 200 flow. Second operand 3 states and 706 transitions. [2023-08-30 09:40:33,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 290 flow [2023-08-30 09:40:33,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 279 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 09:40:33,679 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 202 flow [2023-08-30 09:40:33,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-08-30 09:40:33,681 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2023-08-30 09:40:33,682 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 202 flow [2023-08-30 09:40:33,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:33,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:40:33,682 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-30 09:40:33,692 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 09:40:33,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:33,893 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:40:33,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:40:33,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1684135780, now seen corresponding path program 3 times [2023-08-30 09:40:33,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:40:33,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863343002] [2023-08-30 09:40:33,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:33,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:40:33,979 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:40:33,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720489671] [2023-08-30 09:40:33,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 09:40:33,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:33,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:40:33,988 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:40:33,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 09:40:34,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 09:40:34,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:40:34,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 09:40:34,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:40:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 09:40:34,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:40:34,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:40:34,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863343002] [2023-08-30 09:40:34,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:40:34,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720489671] [2023-08-30 09:40:34,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720489671] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:40:34,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:40:34,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 09:40:34,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823035264] [2023-08-30 09:40:34,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:40:34,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 09:40:34,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:40:34,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 09:40:34,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 09:40:34,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 501 [2023-08-30 09:40:34,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 220.16666666666666) internal successors, (1321), 6 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:34,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:40:34,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 501 [2023-08-30 09:40:34,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:40:34,711 INFO L130 PetriNetUnfolder]: 435/712 cut-off events. [2023-08-30 09:40:34,711 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-08-30 09:40:34,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 712 events. 435/712 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2765 event pairs, 340 based on Foata normal form. 4/440 useless extension candidates. Maximal degree in co-relation 1481. Up to 699 conditions per place. [2023-08-30 09:40:34,715 INFO L137 encePairwiseOnDemand]: 493/501 looper letters, 39 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2023-08-30 09:40:34,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 265 flow [2023-08-30 09:40:34,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:40:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:40:34,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1355 transitions. [2023-08-30 09:40:34,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507651363938789 [2023-08-30 09:40:34,718 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1355 transitions. [2023-08-30 09:40:34,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1355 transitions. [2023-08-30 09:40:34,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:40:34,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1355 transitions. [2023-08-30 09:40:34,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:34,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:34,726 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:34,726 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 202 flow. Second operand 6 states and 1355 transitions. [2023-08-30 09:40:34,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 265 flow [2023-08-30 09:40:34,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 237 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 09:40:34,729 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 146 flow [2023-08-30 09:40:34,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-30 09:40:34,730 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2023-08-30 09:40:34,730 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 146 flow [2023-08-30 09:40:34,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.16666666666666) internal successors, (1321), 6 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:34,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:40:34,731 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:40:34,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 09:40:34,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:34,937 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:40:34,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:40:34,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1722067788, now seen corresponding path program 1 times [2023-08-30 09:40:34,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:40:34,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274180127] [2023-08-30 09:40:34,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:34,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:40:35,004 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:40:35,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938082563] [2023-08-30 09:40:35,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:35,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:35,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:40:35,013 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:40:35,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 09:40:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:40:35,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 09:40:35,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:40:35,430 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:40:35,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:40:35,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:40:35,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:40:35,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274180127] [2023-08-30 09:40:35,482 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:40:35,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938082563] [2023-08-30 09:40:35,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938082563] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:40:35,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 09:40:35,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 09:40:35,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235026267] [2023-08-30 09:40:35,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 09:40:35,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 09:40:35,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:40:35,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 09:40:35,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 09:40:35,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-08-30 09:40:35,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 146 flow. Second operand has 12 states, 12 states have (on average 224.58333333333334) internal successors, (2695), 12 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:35,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:40:35,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-08-30 09:40:35,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:40:36,537 INFO L130 PetriNetUnfolder]: 435/724 cut-off events. [2023-08-30 09:40:36,538 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2023-08-30 09:40:36,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 724 events. 435/724 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2836 event pairs, 340 based on Foata normal form. 12/460 useless extension candidates. Maximal degree in co-relation 1523. Up to 705 conditions per place. [2023-08-30 09:40:36,547 INFO L137 encePairwiseOnDemand]: 498/501 looper letters, 33 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2023-08-30 09:40:36,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 46 transitions, 274 flow [2023-08-30 09:40:36,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 09:40:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 09:40:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2725 transitions. [2023-08-30 09:40:36,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532601463739188 [2023-08-30 09:40:36,555 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2725 transitions. [2023-08-30 09:40:36,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2725 transitions. [2023-08-30 09:40:36,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:40:36,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2725 transitions. [2023-08-30 09:40:36,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 227.08333333333334) internal successors, (2725), 12 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:36,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 501.0) internal successors, (6513), 13 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:36,571 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 501.0) internal successors, (6513), 13 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:36,571 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 146 flow. Second operand 12 states and 2725 transitions. [2023-08-30 09:40:36,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 46 transitions, 274 flow [2023-08-30 09:40:36,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 46 transitions, 266 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 09:40:36,576 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 238 flow [2023-08-30 09:40:36,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=238, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2023-08-30 09:40:36,576 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2023-08-30 09:40:36,576 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 238 flow [2023-08-30 09:40:36,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 224.58333333333334) internal successors, (2695), 12 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:36,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:40:36,578 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:40:36,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 09:40:36,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:36,786 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:40:36,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:40:36,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1929241780, now seen corresponding path program 2 times [2023-08-30 09:40:36,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:40:36,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507736480] [2023-08-30 09:40:36,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:36,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:40:36,909 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:40:36,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010385490] [2023-08-30 09:40:36,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:40:36,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:36,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:40:36,913 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:40:36,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 09:40:37,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 09:40:37,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:40:37,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 09:40:37,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:40:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 09:40:37,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:40:37,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:40:37,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507736480] [2023-08-30 09:40:37,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:40:37,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010385490] [2023-08-30 09:40:37,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010385490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:40:37,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:40:37,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:40:37,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962052407] [2023-08-30 09:40:37,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:40:37,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:40:37,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:40:37,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:40:37,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:40:37,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 501 [2023-08-30 09:40:37,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:37,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:40:37,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 501 [2023-08-30 09:40:37,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:40:37,670 INFO L130 PetriNetUnfolder]: 398/663 cut-off events. [2023-08-30 09:40:37,670 INFO L131 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2023-08-30 09:40:37,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1469 conditions, 663 events. 398/663 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2867 event pairs, 10 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 1444. Up to 597 conditions per place. [2023-08-30 09:40:37,674 INFO L137 encePairwiseOnDemand]: 499/501 looper letters, 59 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-08-30 09:40:37,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 388 flow [2023-08-30 09:40:37,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:40:37,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:40:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 723 transitions. [2023-08-30 09:40:37,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810379241516966 [2023-08-30 09:40:37,676 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 723 transitions. [2023-08-30 09:40:37,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 723 transitions. [2023-08-30 09:40:37,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:40:37,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 723 transitions. [2023-08-30 09:40:37,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:37,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:37,680 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:37,680 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 238 flow. Second operand 3 states and 723 transitions. [2023-08-30 09:40:37,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 388 flow [2023-08-30 09:40:37,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 336 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 09:40:37,683 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 186 flow [2023-08-30 09:40:37,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2023-08-30 09:40:37,685 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2023-08-30 09:40:37,686 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 186 flow [2023-08-30 09:40:37,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:37,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:40:37,686 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:40:37,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 09:40:37,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-30 09:40:37,895 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:40:37,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:40:37,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1929241803, now seen corresponding path program 1 times [2023-08-30 09:40:37,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:40:37,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741008028] [2023-08-30 09:40:37,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:37,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:40:38,020 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:40:38,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126508372] [2023-08-30 09:40:38,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:38,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:38,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:40:38,023 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:40:38,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 09:40:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:40:38,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 2480 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 09:40:38,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:40:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:40:38,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:40:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:40:39,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:40:39,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741008028] [2023-08-30 09:40:39,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:40:39,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126508372] [2023-08-30 09:40:39,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126508372] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:40:39,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 09:40:39,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-30 09:40:39,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175598441] [2023-08-30 09:40:39,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 09:40:39,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 09:40:39,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:40:39,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 09:40:39,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-30 09:40:39,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-08-30 09:40:39,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 186 flow. Second operand has 24 states, 24 states have (on average 224.29166666666666) internal successors, (5383), 24 states have internal predecessors, (5383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:39,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:40:39,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-08-30 09:40:39,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:40:40,640 INFO L130 PetriNetUnfolder]: 398/687 cut-off events. [2023-08-30 09:40:40,641 INFO L131 PetriNetUnfolder]: For 1220/1220 co-relation queries the response was YES. [2023-08-30 09:40:40,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 687 events. 398/687 cut-off events. For 1220/1220 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2560 event pairs, 307 based on Foata normal form. 24/471 useless extension candidates. Maximal degree in co-relation 1517. Up to 644 conditions per place. [2023-08-30 09:40:40,644 INFO L137 encePairwiseOnDemand]: 498/501 looper letters, 32 selfloop transitions, 25 changer transitions 0/57 dead transitions. [2023-08-30 09:40:40,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 57 transitions, 372 flow [2023-08-30 09:40:40,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 09:40:40,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 09:40:40,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5418 transitions. [2023-08-30 09:40:40,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505988023952096 [2023-08-30 09:40:40,656 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5418 transitions. [2023-08-30 09:40:40,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5418 transitions. [2023-08-30 09:40:40,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:40:40,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5418 transitions. [2023-08-30 09:40:40,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 225.75) internal successors, (5418), 24 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:40,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 501.0) internal successors, (12525), 25 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:40,683 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 501.0) internal successors, (12525), 25 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:40,684 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 186 flow. Second operand 24 states and 5418 transitions. [2023-08-30 09:40:40,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 57 transitions, 372 flow [2023-08-30 09:40:40,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 57 transitions, 371 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:40:40,686 INFO L231 Difference]: Finished difference. Result has 96 places, 57 transitions, 381 flow [2023-08-30 09:40:40,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=381, PETRI_PLACES=96, PETRI_TRANSITIONS=57} [2023-08-30 09:40:40,687 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 56 predicate places. [2023-08-30 09:40:40,687 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 57 transitions, 381 flow [2023-08-30 09:40:40,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 224.29166666666666) internal successors, (5383), 24 states have internal predecessors, (5383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:40,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:40:40,689 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:40:40,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 09:40:40,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:40,901 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:40:40,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:40:40,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1228995381, now seen corresponding path program 2 times [2023-08-30 09:40:40,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:40:40,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700126547] [2023-08-30 09:40:40,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:40,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:40:41,122 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:40:41,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074390324] [2023-08-30 09:40:41,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:40:41,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:41,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:40:41,125 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:40:41,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 09:40:42,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 09:40:42,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:40:42,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 5288 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 09:40:42,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:40:42,886 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:40:42,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:40:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:40:43,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:40:43,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700126547] [2023-08-30 09:40:43,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:40:43,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074390324] [2023-08-30 09:40:43,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074390324] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:40:43,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 09:40:43,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-30 09:40:43,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093586199] [2023-08-30 09:40:43,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 09:40:43,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 09:40:43,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:40:43,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 09:40:43,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-30 09:40:43,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-08-30 09:40:43,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 57 transitions, 381 flow. Second operand has 32 states, 32 states have (on average 224.25) internal successors, (7176), 32 states have internal predecessors, (7176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:43,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:40:43,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-08-30 09:40:43,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:40:44,934 INFO L130 PetriNetUnfolder]: 398/703 cut-off events. [2023-08-30 09:40:44,934 INFO L131 PetriNetUnfolder]: For 4132/4132 co-relation queries the response was YES. [2023-08-30 09:40:44,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 703 events. 398/703 cut-off events. For 4132/4132 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2560 event pairs, 307 based on Foata normal form. 16/479 useless extension candidates. Maximal degree in co-relation 1692. Up to 644 conditions per place. [2023-08-30 09:40:44,939 INFO L137 encePairwiseOnDemand]: 498/501 looper letters, 32 selfloop transitions, 33 changer transitions 0/65 dead transitions. [2023-08-30 09:40:44,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 65 transitions, 575 flow [2023-08-30 09:40:44,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 09:40:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 09:40:44,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7206 transitions. [2023-08-30 09:40:44,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494760479041916 [2023-08-30 09:40:44,967 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 7206 transitions. [2023-08-30 09:40:44,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 7206 transitions. [2023-08-30 09:40:44,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:40:44,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 7206 transitions. [2023-08-30 09:40:44,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 225.1875) internal successors, (7206), 32 states have internal predecessors, (7206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:45,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 501.0) internal successors, (16533), 33 states have internal predecessors, (16533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:45,005 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 501.0) internal successors, (16533), 33 states have internal predecessors, (16533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:45,006 INFO L175 Difference]: Start difference. First operand has 96 places, 57 transitions, 381 flow. Second operand 32 states and 7206 transitions. [2023-08-30 09:40:45,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 65 transitions, 575 flow [2023-08-30 09:40:45,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 65 transitions, 459 flow, removed 45 selfloop flow, removed 11 redundant places. [2023-08-30 09:40:45,014 INFO L231 Difference]: Finished difference. Result has 124 places, 65 transitions, 445 flow [2023-08-30 09:40:45,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=445, PETRI_PLACES=124, PETRI_TRANSITIONS=65} [2023-08-30 09:40:45,016 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 84 predicate places. [2023-08-30 09:40:45,016 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 65 transitions, 445 flow [2023-08-30 09:40:45,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 224.25) internal successors, (7176), 32 states have internal predecessors, (7176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:45,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:40:45,018 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:40:45,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 09:40:45,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 09:40:45,239 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:40:45,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:40:45,239 INFO L85 PathProgramCache]: Analyzing trace with hash -716192565, now seen corresponding path program 3 times [2023-08-30 09:40:45,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:40:45,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659008077] [2023-08-30 09:40:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:45,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:40:45,546 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:40:45,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715733125] [2023-08-30 09:40:45,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 09:40:45,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:45,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:40:45,548 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:40:45,550 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 09:40:46,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 09:40:46,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:40:46,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:40:46,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:40:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-30 09:40:46,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:40:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-30 09:40:46,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:40:46,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659008077] [2023-08-30 09:40:46,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:40:46,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715733125] [2023-08-30 09:40:46,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715733125] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:40:46,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 09:40:46,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-30 09:40:46,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381064520] [2023-08-30 09:40:46,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 09:40:46,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 09:40:46,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:40:46,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 09:40:46,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 09:40:47,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-08-30 09:40:47,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 65 transitions, 445 flow. Second operand has 6 states, 6 states have (on average 225.5) internal successors, (1353), 6 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:47,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:40:47,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-08-30 09:40:47,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:40:47,492 INFO L130 PetriNetUnfolder]: 400/770 cut-off events. [2023-08-30 09:40:47,493 INFO L131 PetriNetUnfolder]: For 1655/1655 co-relation queries the response was YES. [2023-08-30 09:40:47,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2088 conditions, 770 events. 400/770 cut-off events. For 1655/1655 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2435 event pairs, 307 based on Foata normal form. 3/533 useless extension candidates. Maximal degree in co-relation 2043. Up to 638 conditions per place. [2023-08-30 09:40:47,499 INFO L137 encePairwiseOnDemand]: 497/501 looper letters, 156 selfloop transitions, 6 changer transitions 0/162 dead transitions. [2023-08-30 09:40:47,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 162 transitions, 1584 flow [2023-08-30 09:40:47,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:40:47,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:40:47,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1383 transitions. [2023-08-30 09:40:47,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4600798403193613 [2023-08-30 09:40:47,503 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1383 transitions. [2023-08-30 09:40:47,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1383 transitions. [2023-08-30 09:40:47,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:40:47,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1383 transitions. [2023-08-30 09:40:47,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.5) internal successors, (1383), 6 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:47,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:47,511 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:47,511 INFO L175 Difference]: Start difference. First operand has 124 places, 65 transitions, 445 flow. Second operand 6 states and 1383 transitions. [2023-08-30 09:40:47,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 162 transitions, 1584 flow [2023-08-30 09:40:47,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 162 transitions, 1198 flow, removed 100 selfloop flow, removed 23 redundant places. [2023-08-30 09:40:47,522 INFO L231 Difference]: Finished difference. Result has 110 places, 68 transitions, 511 flow [2023-08-30 09:40:47,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=511, PETRI_PLACES=110, PETRI_TRANSITIONS=68} [2023-08-30 09:40:47,522 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 70 predicate places. [2023-08-30 09:40:47,522 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 68 transitions, 511 flow [2023-08-30 09:40:47,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 225.5) internal successors, (1353), 6 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:47,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:40:47,523 INFO L208 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:40:47,536 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 09:40:47,735 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 09:40:47,736 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:40:47,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:40:47,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1327930031, now seen corresponding path program 4 times [2023-08-30 09:40:47,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:40:47,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074323996] [2023-08-30 09:40:47,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:47,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:40:48,769 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:40:48,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756388892] [2023-08-30 09:40:48,769 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 09:40:48,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:40:48,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:40:48,775 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 09:40:48,777 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 09:40:55,353 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 09:40:55,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:40:55,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 28340 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 09:40:55,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:40:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-30 09:40:55,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:40:56,079 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-30 09:40:56,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:40:56,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074323996] [2023-08-30 09:40:56,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 09:40:56,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756388892] [2023-08-30 09:40:56,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756388892] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:40:56,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 09:40:56,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-08-30 09:40:56,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567234327] [2023-08-30 09:40:56,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 09:40:56,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 09:40:56,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:40:56,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 09:40:56,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 09:40:56,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-08-30 09:40:56,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 68 transitions, 511 flow. Second operand has 12 states, 12 states have (on average 225.75) internal successors, (2709), 12 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:56,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:40:56,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-08-30 09:40:56,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:40:57,409 INFO L130 PetriNetUnfolder]: 406/968 cut-off events. [2023-08-30 09:40:57,410 INFO L131 PetriNetUnfolder]: For 5331/5331 co-relation queries the response was YES. [2023-08-30 09:40:57,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2737 conditions, 968 events. 406/968 cut-off events. For 5331/5331 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2441 event pairs, 307 based on Foata normal form. 6/734 useless extension candidates. Maximal degree in co-relation 2688. Up to 638 conditions per place. [2023-08-30 09:40:57,417 INFO L137 encePairwiseOnDemand]: 497/501 looper letters, 348 selfloop transitions, 12 changer transitions 0/360 dead transitions. [2023-08-30 09:40:57,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 360 transitions, 2876 flow [2023-08-30 09:40:57,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 09:40:57,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 09:40:57,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2742 transitions. [2023-08-30 09:40:57,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560878243512974 [2023-08-30 09:40:57,423 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2742 transitions. [2023-08-30 09:40:57,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2742 transitions. [2023-08-30 09:40:57,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:40:57,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2742 transitions. [2023-08-30 09:40:57,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 228.5) internal successors, (2742), 12 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:57,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 501.0) internal successors, (6513), 13 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:57,439 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 501.0) internal successors, (6513), 13 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:57,439 INFO L175 Difference]: Start difference. First operand has 110 places, 68 transitions, 511 flow. Second operand 12 states and 2742 transitions. [2023-08-30 09:40:57,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 360 transitions, 2876 flow [2023-08-30 09:40:57,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 360 transitions, 2874 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:40:57,456 INFO L231 Difference]: Finished difference. Result has 127 places, 75 transitions, 983 flow [2023-08-30 09:40:57,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=983, PETRI_PLACES=127, PETRI_TRANSITIONS=75} [2023-08-30 09:40:57,457 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 87 predicate places. [2023-08-30 09:40:57,458 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 75 transitions, 983 flow [2023-08-30 09:40:57,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 225.75) internal successors, (2709), 12 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:40:57,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:40:57,459 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:40:57,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 09:40:57,679 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 09:40:57,679 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 09:40:57,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:40:57,680 INFO L85 PathProgramCache]: Analyzing trace with hash 190789239, now seen corresponding path program 5 times [2023-08-30 09:40:57,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:40:57,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214302837] [2023-08-30 09:40:57,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:40:57,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:41:00,395 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 09:41:00,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065764252] [2023-08-30 09:41:00,396 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 09:41:00,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:41:00,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:41:00,401 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 09:41:00,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Killed by 15