./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7e1ff0e6 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 ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash 1ab1611c68b20ff5721c195b0d2c7506cb1678fd2a0003f8a2214f630d652abe --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-15 02:08:32,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 02:08:32,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 02:08:32,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 02:08:32,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 02:08:32,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 02:08:32,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 02:08:32,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 02:08:32,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 02:08:32,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 02:08:32,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 02:08:32,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 02:08:32,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 02:08:32,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 02:08:32,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 02:08:32,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 02:08:32,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 02:08:32,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 02:08:32,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 02:08:32,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 02:08:32,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 02:08:32,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 02:08:32,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 02:08:32,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 02:08:32,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 02:08:32,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 02:08:32,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 02:08:32,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 02:08:32,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 02:08:32,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 02:08:32,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 02:08:32,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 02:08:32,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 02:08:32,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 02:08:32,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 02:08:32,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 02:08:32,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 02:08:32,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 02:08:32,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 02:08:32,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 02:08:32,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 02:08:32,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-15 02:08:32,822 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 02:08:32,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 02:08:32,829 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 02:08:32,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 02:08:32,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 02:08:32,830 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 02:08:32,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 02:08:32,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 02:08:32,831 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 02:08:32,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 02:08:32,832 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 02:08:32,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 02:08:32,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 02:08:32,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 02:08:32,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 02:08:32,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 02:08:32,833 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-15 02:08:32,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 02:08:32,833 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 02:08:32,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 02:08:32,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 02:08:32,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 02:08:32,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 02:08:32,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 02:08:32,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 02:08:32,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 02:08:32,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 02:08:32,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 02:08:32,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 02:08:32,835 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 02:08:32,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 02:08:32,835 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 02:08:32,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 02:08:32,835 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 02:08:32,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ab1611c68b20ff5721c195b0d2c7506cb1678fd2a0003f8a2214f630d652abe [2023-02-15 02:08:33,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 02:08:33,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 02:08:33,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 02:08:33,060 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 02:08:33,060 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 02:08:33,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2023-02-15 02:08:34,041 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 02:08:34,189 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 02:08:34,190 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2023-02-15 02:08:34,193 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a186e59a/0a4dde5935054f5cbc7d350f554b299f/FLAG4483ab84a [2023-02-15 02:08:34,202 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a186e59a/0a4dde5935054f5cbc7d350f554b299f [2023-02-15 02:08:34,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 02:08:34,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 02:08:34,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 02:08:34,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 02:08:34,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 02:08:34,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:08:34" (1/1) ... [2023-02-15 02:08:34,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ff89c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:08:34, skipping insertion in model container [2023-02-15 02:08:34,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:08:34" (1/1) ... [2023-02-15 02:08:34,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 02:08:34,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 02:08:34,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 02:08:34,310 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 02:08:34,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 02:08:34,326 INFO L208 MainTranslator]: Completed translation [2023-02-15 02:08:34,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:08:34 WrapperNode [2023-02-15 02:08:34,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 02:08:34,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 02:08:34,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 02:08:34,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 02:08:34,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:08:34" (1/1) ... [2023-02-15 02:08:34,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:08:34" (1/1) ... [2023-02-15 02:08:34,347 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2023-02-15 02:08:34,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 02:08:34,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 02:08:34,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 02:08:34,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 02:08:34,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:08:34" (1/1) ... [2023-02-15 02:08:34,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:08:34" (1/1) ... [2023-02-15 02:08:34,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:08:34" (1/1) ... [2023-02-15 02:08:34,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:08:34" (1/1) ... [2023-02-15 02:08:34,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:08:34" (1/1) ... [2023-02-15 02:08:34,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:08:34" (1/1) ... [2023-02-15 02:08:34,358 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:08:34" (1/1) ... [2023-02-15 02:08:34,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:08:34" (1/1) ... [2023-02-15 02:08:34,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 02:08:34,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 02:08:34,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 02:08:34,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 02:08:34,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:08:34" (1/1) ... [2023-02-15 02:08:34,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 02:08:34,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:34,390 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) [2023-02-15 02:08:34,413 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 [2023-02-15 02:08:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-02-15 02:08:34,430 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-02-15 02:08:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 02:08:34,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 02:08:34,468 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 02:08:34,470 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 02:08:34,601 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 02:08:34,605 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 02:08:34,609 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-15 02:08:34,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:08:34 BoogieIcfgContainer [2023-02-15 02:08:34,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 02:08:34,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 02:08:34,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 02:08:34,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 02:08:34,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 02:08:34" (1/3) ... [2023-02-15 02:08:34,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cae5d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:08:34, skipping insertion in model container [2023-02-15 02:08:34,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:08:34" (2/3) ... [2023-02-15 02:08:34,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cae5d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:08:34, skipping insertion in model container [2023-02-15 02:08:34,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:08:34" (3/3) ... [2023-02-15 02:08:34,624 INFO L112 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex5.c [2023-02-15 02:08:34,638 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 02:08:34,638 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-15 02:08:34,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 02:08:34,682 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;@11415a97, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 02:08:34,683 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-15 02:08:34,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 02:08:34,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 02:08:34,690 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:34,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:08:34,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:34,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:34,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1484225386, now seen corresponding path program 1 times [2023-02-15 02:08:34,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:34,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814599657] [2023-02-15 02:08:34,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:34,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:34,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:34,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814599657] [2023-02-15 02:08:34,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814599657] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:08:34,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:08:34,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 02:08:34,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270296113] [2023-02-15 02:08:34,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:08:34,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 02:08:34,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:34,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 02:08:34,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 02:08:34,941 INFO L87 Difference]: Start difference. First operand has 26 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:35,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:35,038 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2023-02-15 02:08:35,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 02:08:35,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-15 02:08:35,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:35,044 INFO L225 Difference]: With dead ends: 49 [2023-02-15 02:08:35,044 INFO L226 Difference]: Without dead ends: 29 [2023-02-15 02:08:35,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 02:08:35,052 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:35,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 84 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 02:08:35,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-15 02:08:35,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2023-02-15 02:08:35,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:35,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2023-02-15 02:08:35,080 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 8 [2023-02-15 02:08:35,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:35,080 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2023-02-15 02:08:35,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:35,080 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-02-15 02:08:35,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 02:08:35,081 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:35,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:08:35,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 02:08:35,081 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:35,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:35,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1484225162, now seen corresponding path program 1 times [2023-02-15 02:08:35,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:35,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828396764] [2023-02-15 02:08:35,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:35,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:35,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:35,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828396764] [2023-02-15 02:08:35,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828396764] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:08:35,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:08:35,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 02:08:35,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176258531] [2023-02-15 02:08:35,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:08:35,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 02:08:35,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:35,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 02:08:35,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 02:08:35,134 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:35,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:35,184 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2023-02-15 02:08:35,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 02:08:35,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-15 02:08:35,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:35,186 INFO L225 Difference]: With dead ends: 29 [2023-02-15 02:08:35,186 INFO L226 Difference]: Without dead ends: 28 [2023-02-15 02:08:35,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 02:08:35,187 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:35,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 37 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:08:35,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-15 02:08:35,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2023-02-15 02:08:35,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:35,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-02-15 02:08:35,191 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 8 [2023-02-15 02:08:35,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:35,191 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-02-15 02:08:35,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:35,192 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-02-15 02:08:35,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 02:08:35,192 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:35,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:08:35,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 02:08:35,193 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:35,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:35,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1233653331, now seen corresponding path program 1 times [2023-02-15 02:08:35,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:35,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479084203] [2023-02-15 02:08:35,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:35,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:35,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:35,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479084203] [2023-02-15 02:08:35,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479084203] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:08:35,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:08:35,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 02:08:35,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815305347] [2023-02-15 02:08:35,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:08:35,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 02:08:35,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:35,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 02:08:35,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 02:08:35,253 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:35,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:35,296 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2023-02-15 02:08:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 02:08:35,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 02:08:35,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:35,297 INFO L225 Difference]: With dead ends: 35 [2023-02-15 02:08:35,297 INFO L226 Difference]: Without dead ends: 34 [2023-02-15 02:08:35,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 02:08:35,298 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:35,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 41 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:08:35,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-15 02:08:35,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2023-02-15 02:08:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.4) internal successors, (28), 24 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-02-15 02:08:35,302 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 9 [2023-02-15 02:08:35,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:35,303 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-02-15 02:08:35,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:35,303 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-02-15 02:08:35,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 02:08:35,303 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:35,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:08:35,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 02:08:35,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:35,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:35,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1233660282, now seen corresponding path program 1 times [2023-02-15 02:08:35,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:35,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557881334] [2023-02-15 02:08:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:35,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:35,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:35,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557881334] [2023-02-15 02:08:35,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557881334] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:08:35,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:08:35,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 02:08:35,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012359097] [2023-02-15 02:08:35,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:08:35,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 02:08:35,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:35,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 02:08:35,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 02:08:35,380 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:35,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:35,410 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-02-15 02:08:35,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 02:08:35,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 02:08:35,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:35,411 INFO L225 Difference]: With dead ends: 33 [2023-02-15 02:08:35,411 INFO L226 Difference]: Without dead ends: 32 [2023-02-15 02:08:35,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 02:08:35,413 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:35,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 36 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:08:35,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-15 02:08:35,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2023-02-15 02:08:35,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.380952380952381) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:35,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-02-15 02:08:35,417 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 9 [2023-02-15 02:08:35,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:35,417 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-02-15 02:08:35,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:35,418 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-02-15 02:08:35,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 02:08:35,418 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:35,418 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:08:35,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 02:08:35,418 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:35,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:35,419 INFO L85 PathProgramCache]: Analyzing trace with hash -525255754, now seen corresponding path program 1 times [2023-02-15 02:08:35,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:35,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566943634] [2023-02-15 02:08:35,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:35,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:35,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:35,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566943634] [2023-02-15 02:08:35,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566943634] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:35,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272832658] [2023-02-15 02:08:35,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:35,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:35,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:35,478 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) [2023-02-15 02:08:35,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 02:08:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:35,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 02:08:35,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:35,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:08:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:35,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272832658] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:08:35,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:08:35,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-15 02:08:35,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405311238] [2023-02-15 02:08:35,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:08:35,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 02:08:35,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:35,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 02:08:35,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-15 02:08:35,610 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:35,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:35,683 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2023-02-15 02:08:35,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 02:08:35,684 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 02:08:35,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:35,685 INFO L225 Difference]: With dead ends: 66 [2023-02-15 02:08:35,685 INFO L226 Difference]: Without dead ends: 65 [2023-02-15 02:08:35,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-02-15 02:08:35,686 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 80 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:35,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 116 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:08:35,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-02-15 02:08:35,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 47. [2023-02-15 02:08:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 40 states have internal predecessors, (47), 7 states have call successors, (7), 6 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:35,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2023-02-15 02:08:35,692 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 14 [2023-02-15 02:08:35,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:35,692 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2023-02-15 02:08:35,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:35,692 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2023-02-15 02:08:35,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 02:08:35,693 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:35,693 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:08:35,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 02:08:35,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:35,900 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:35,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:35,901 INFO L85 PathProgramCache]: Analyzing trace with hash -525255530, now seen corresponding path program 1 times [2023-02-15 02:08:35,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:35,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558125862] [2023-02-15 02:08:35,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:35,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:35,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:35,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558125862] [2023-02-15 02:08:35,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558125862] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:35,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2619154] [2023-02-15 02:08:35,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:35,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:35,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:35,954 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) [2023-02-15 02:08:35,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 02:08:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:35,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 02:08:35,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:36,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 02:08:36,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2619154] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:08:36,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 02:08:36,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-02-15 02:08:36,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965550894] [2023-02-15 02:08:36,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:08:36,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 02:08:36,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:36,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 02:08:36,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-02-15 02:08:36,006 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:36,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:36,054 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2023-02-15 02:08:36,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 02:08:36,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 02:08:36,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:36,055 INFO L225 Difference]: With dead ends: 60 [2023-02-15 02:08:36,055 INFO L226 Difference]: Without dead ends: 59 [2023-02-15 02:08:36,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-02-15 02:08:36,056 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:36,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 42 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:08:36,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-15 02:08:36,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2023-02-15 02:08:36,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.3) internal successors, (52), 43 states have internal predecessors, (52), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:36,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2023-02-15 02:08:36,063 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 14 [2023-02-15 02:08:36,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:36,064 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2023-02-15 02:08:36,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:36,064 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-02-15 02:08:36,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 02:08:36,064 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:36,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:08:36,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-15 02:08:36,269 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,SelfDestructingSolverStorable5 [2023-02-15 02:08:36,269 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:36,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:36,270 INFO L85 PathProgramCache]: Analyzing trace with hash 909324273, now seen corresponding path program 1 times [2023-02-15 02:08:36,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:36,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560532957] [2023-02-15 02:08:36,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:36,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:36,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:36,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:36,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560532957] [2023-02-15 02:08:36,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560532957] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:36,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118624467] [2023-02-15 02:08:36,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:36,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:36,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:36,328 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) [2023-02-15 02:08:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:36,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 02:08:36,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:36,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 02:08:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:36,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:08:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:36,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118624467] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:08:36,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:08:36,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-15 02:08:36,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163232516] [2023-02-15 02:08:36,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:08:36,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 02:08:36,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:36,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 02:08:36,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-02-15 02:08:36,426 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:36,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:36,643 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2023-02-15 02:08:36,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-15 02:08:36,643 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 02:08:36,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:36,646 INFO L225 Difference]: With dead ends: 101 [2023-02-15 02:08:36,646 INFO L226 Difference]: Without dead ends: 99 [2023-02-15 02:08:36,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2023-02-15 02:08:36,648 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 111 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:36,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 92 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 02:08:36,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-02-15 02:08:36,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2023-02-15 02:08:36,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 62 states have internal predecessors, (79), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:36,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 90 transitions. [2023-02-15 02:08:36,667 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 90 transitions. Word has length 14 [2023-02-15 02:08:36,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:36,668 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 90 transitions. [2023-02-15 02:08:36,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:36,668 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 90 transitions. [2023-02-15 02:08:36,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 02:08:36,668 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:36,668 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:08:36,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 02:08:36,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:36,869 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:36,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:36,870 INFO L85 PathProgramCache]: Analyzing trace with hash 909324497, now seen corresponding path program 1 times [2023-02-15 02:08:36,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:36,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813805303] [2023-02-15 02:08:36,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:36,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:36,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:36,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:36,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813805303] [2023-02-15 02:08:36,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813805303] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:36,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628577723] [2023-02-15 02:08:36,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:36,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:36,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:36,928 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) [2023-02-15 02:08:36,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 02:08:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:36,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 02:08:36,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:36,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:08:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:37,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628577723] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:08:37,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:08:37,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-15 02:08:37,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692400770] [2023-02-15 02:08:37,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:08:37,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 02:08:37,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:37,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 02:08:37,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-02-15 02:08:37,029 INFO L87 Difference]: Start difference. First operand 74 states and 90 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:37,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:37,288 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2023-02-15 02:08:37,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-02-15 02:08:37,288 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 02:08:37,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:37,289 INFO L225 Difference]: With dead ends: 117 [2023-02-15 02:08:37,289 INFO L226 Difference]: Without dead ends: 115 [2023-02-15 02:08:37,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2023-02-15 02:08:37,292 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 180 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:37,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 48 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 02:08:37,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-02-15 02:08:37,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 89. [2023-02-15 02:08:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 75 states have internal predecessors, (95), 14 states have call successors, (14), 13 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:37,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2023-02-15 02:08:37,320 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 14 [2023-02-15 02:08:37,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:37,320 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2023-02-15 02:08:37,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:37,323 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2023-02-15 02:08:37,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 02:08:37,323 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:37,323 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:08:37,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-15 02:08:37,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:37,528 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:37,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:37,529 INFO L85 PathProgramCache]: Analyzing trace with hash 896947802, now seen corresponding path program 1 times [2023-02-15 02:08:37,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:37,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46675327] [2023-02-15 02:08:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:37,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:37,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:37,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:37,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46675327] [2023-02-15 02:08:37,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46675327] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:37,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291529348] [2023-02-15 02:08:37,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:37,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:37,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:37,585 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) [2023-02-15 02:08:37,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 02:08:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:37,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 02:08:37,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:37,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 02:08:37,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291529348] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:08:37,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 02:08:37,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-02-15 02:08:37,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307874208] [2023-02-15 02:08:37,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:08:37,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 02:08:37,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:37,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 02:08:37,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-02-15 02:08:37,629 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:37,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:37,666 INFO L93 Difference]: Finished difference Result 102 states and 123 transitions. [2023-02-15 02:08:37,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 02:08:37,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-15 02:08:37,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:37,666 INFO L225 Difference]: With dead ends: 102 [2023-02-15 02:08:37,667 INFO L226 Difference]: Without dead ends: 101 [2023-02-15 02:08:37,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-02-15 02:08:37,667 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:37,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 54 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:08:37,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-15 02:08:37,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2023-02-15 02:08:37,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 76 states have (on average 1.3026315789473684) internal successors, (99), 79 states have internal predecessors, (99), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:37,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 113 transitions. [2023-02-15 02:08:37,674 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 113 transitions. Word has length 15 [2023-02-15 02:08:37,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:37,674 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 113 transitions. [2023-02-15 02:08:37,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:37,675 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 113 transitions. [2023-02-15 02:08:37,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 02:08:37,675 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:37,675 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:08:37,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 02:08:37,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:37,876 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:37,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:37,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1875718568, now seen corresponding path program 1 times [2023-02-15 02:08:37,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:37,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337556755] [2023-02-15 02:08:37,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:37,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:37,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:37,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337556755] [2023-02-15 02:08:37,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337556755] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:37,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512652854] [2023-02-15 02:08:37,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:37,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:37,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:37,917 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) [2023-02-15 02:08:37,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 02:08:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:37,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 02:08:37,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:37,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 02:08:37,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512652854] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:08:37,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 02:08:37,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-02-15 02:08:37,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763214939] [2023-02-15 02:08:37,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:08:37,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 02:08:37,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:37,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 02:08:37,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-02-15 02:08:37,964 INFO L87 Difference]: Start difference. First operand 94 states and 113 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:38,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:38,007 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2023-02-15 02:08:38,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 02:08:38,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-15 02:08:38,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:38,007 INFO L225 Difference]: With dead ends: 98 [2023-02-15 02:08:38,007 INFO L226 Difference]: Without dead ends: 97 [2023-02-15 02:08:38,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-02-15 02:08:38,008 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:38,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 47 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:08:38,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-15 02:08:38,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2023-02-15 02:08:38,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 72 states have internal predecessors, (89), 13 states have call successors, (13), 13 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:38,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2023-02-15 02:08:38,015 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 15 [2023-02-15 02:08:38,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:38,015 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2023-02-15 02:08:38,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:38,015 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2023-02-15 02:08:38,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 02:08:38,016 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:38,016 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:08:38,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 02:08:38,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:38,221 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:38,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:38,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1875711617, now seen corresponding path program 1 times [2023-02-15 02:08:38,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:38,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038759949] [2023-02-15 02:08:38,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:38,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:38,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:38,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038759949] [2023-02-15 02:08:38,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038759949] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:38,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444266887] [2023-02-15 02:08:38,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:38,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:38,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:38,254 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) [2023-02-15 02:08:38,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 02:08:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:38,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 02:08:38,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:38,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:08:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:38,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444266887] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:08:38,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:08:38,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-15 02:08:38,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526033158] [2023-02-15 02:08:38,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:08:38,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 02:08:38,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:38,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 02:08:38,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-02-15 02:08:38,351 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:38,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:38,449 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2023-02-15 02:08:38,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 02:08:38,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-15 02:08:38,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:38,450 INFO L225 Difference]: With dead ends: 86 [2023-02-15 02:08:38,450 INFO L226 Difference]: Without dead ends: 85 [2023-02-15 02:08:38,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-02-15 02:08:38,451 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 45 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:38,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 32 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:08:38,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-15 02:08:38,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2023-02-15 02:08:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 65 states have internal predecessors, (75), 13 states have call successors, (13), 11 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2023-02-15 02:08:38,459 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 15 [2023-02-15 02:08:38,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:38,461 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2023-02-15 02:08:38,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:38,461 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2023-02-15 02:08:38,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 02:08:38,465 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:38,465 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:08:38,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 02:08:38,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:38,672 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:38,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:38,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1504515633, now seen corresponding path program 1 times [2023-02-15 02:08:38,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:38,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552129302] [2023-02-15 02:08:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:38,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:38,734 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:38,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:38,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552129302] [2023-02-15 02:08:38,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552129302] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:38,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355302446] [2023-02-15 02:08:38,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:38,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:38,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:38,736 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) [2023-02-15 02:08:38,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 02:08:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:38,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 02:08:38,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:38,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:08:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:38,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355302446] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:08:38,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:08:38,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 21 [2023-02-15 02:08:38,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267947405] [2023-02-15 02:08:38,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:08:38,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-15 02:08:38,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:38,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-15 02:08:38,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-02-15 02:08:38,921 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 22 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:39,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:39,417 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2023-02-15 02:08:39,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-02-15 02:08:39,418 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-15 02:08:39,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:39,419 INFO L225 Difference]: With dead ends: 151 [2023-02-15 02:08:39,419 INFO L226 Difference]: Without dead ends: 149 [2023-02-15 02:08:39,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=553, Invalid=2203, Unknown=0, NotChecked=0, Total=2756 [2023-02-15 02:08:39,420 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 326 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:39,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 92 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 02:08:39,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-02-15 02:08:39,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 77. [2023-02-15 02:08:39,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 64 states have internal predecessors, (77), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:39,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2023-02-15 02:08:39,427 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 26 [2023-02-15 02:08:39,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:39,428 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2023-02-15 02:08:39,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:39,428 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2023-02-15 02:08:39,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 02:08:39,429 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:39,430 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:08:39,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 02:08:39,634 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,SelfDestructingSolverStorable11 [2023-02-15 02:08:39,634 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:39,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:39,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1343457996, now seen corresponding path program 1 times [2023-02-15 02:08:39,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:39,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148326807] [2023-02-15 02:08:39,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:39,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:39,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:39,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148326807] [2023-02-15 02:08:39,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148326807] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:39,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573915239] [2023-02-15 02:08:39,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:39,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:39,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:39,710 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) [2023-02-15 02:08:39,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 02:08:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:39,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 02:08:39,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:39,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:08:39,854 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:39,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573915239] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:08:39,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:08:39,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2023-02-15 02:08:39,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862138160] [2023-02-15 02:08:39,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:08:39,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 02:08:39,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:39,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 02:08:39,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-02-15 02:08:39,856 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:40,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:40,221 INFO L93 Difference]: Finished difference Result 195 states and 222 transitions. [2023-02-15 02:08:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-02-15 02:08:40,222 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-15 02:08:40,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:40,222 INFO L225 Difference]: With dead ends: 195 [2023-02-15 02:08:40,222 INFO L226 Difference]: Without dead ends: 193 [2023-02-15 02:08:40,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=437, Invalid=1725, Unknown=0, NotChecked=0, Total=2162 [2023-02-15 02:08:40,224 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 140 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:40,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 80 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 02:08:40,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-02-15 02:08:40,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 119. [2023-02-15 02:08:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 98 states have (on average 1.2142857142857142) internal successors, (119), 99 states have internal predecessors, (119), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:40,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2023-02-15 02:08:40,233 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 26 [2023-02-15 02:08:40,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:40,233 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2023-02-15 02:08:40,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:40,234 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2023-02-15 02:08:40,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 02:08:40,234 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:40,234 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-15 02:08:40,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 02:08:40,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-15 02:08:40,443 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:40,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:40,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1894821127, now seen corresponding path program 2 times [2023-02-15 02:08:40,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:40,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217742170] [2023-02-15 02:08:40,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:40,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:40,544 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:40,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:40,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217742170] [2023-02-15 02:08:40,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217742170] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:40,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632770368] [2023-02-15 02:08:40,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 02:08:40,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:40,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:40,546 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) [2023-02-15 02:08:40,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 02:08:40,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 02:08:40,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:08:40,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 02:08:40,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:40,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:08:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:40,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632770368] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:08:40,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:08:40,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 29 [2023-02-15 02:08:40,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402571722] [2023-02-15 02:08:40,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:08:40,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-15 02:08:40,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:40,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-15 02:08:40,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2023-02-15 02:08:40,814 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand has 30 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 17 states have internal predecessors, (71), 13 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:41,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:41,731 INFO L93 Difference]: Finished difference Result 263 states and 303 transitions. [2023-02-15 02:08:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-02-15 02:08:41,731 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 17 states have internal predecessors, (71), 13 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-02-15 02:08:41,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:41,732 INFO L225 Difference]: With dead ends: 263 [2023-02-15 02:08:41,732 INFO L226 Difference]: Without dead ends: 261 [2023-02-15 02:08:41,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2230 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1389, Invalid=5921, Unknown=0, NotChecked=0, Total=7310 [2023-02-15 02:08:41,735 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 375 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:41,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 131 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 02:08:41,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-02-15 02:08:41,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 144. [2023-02-15 02:08:41,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 119 states have (on average 1.218487394957983) internal successors, (145), 120 states have internal predecessors, (145), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:41,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2023-02-15 02:08:41,750 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 38 [2023-02-15 02:08:41,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:41,751 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2023-02-15 02:08:41,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 17 states have internal predecessors, (71), 13 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:41,751 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2023-02-15 02:08:41,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 02:08:41,752 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:41,752 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-15 02:08:41,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 02:08:41,958 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,SelfDestructingSolverStorable13 [2023-02-15 02:08:41,958 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:41,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:41,958 INFO L85 PathProgramCache]: Analyzing trace with hash 28164967, now seen corresponding path program 2 times [2023-02-15 02:08:41,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:41,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573577239] [2023-02-15 02:08:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:41,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 34 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 02:08:42,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:42,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573577239] [2023-02-15 02:08:42,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573577239] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:42,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172727327] [2023-02-15 02:08:42,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 02:08:42,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:42,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:42,063 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) [2023-02-15 02:08:42,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 02:08:42,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 02:08:42,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:08:42,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 02:08:42,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 35 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 02:08:42,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:08:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 41 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 02:08:42,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172727327] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:08:42,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:08:42,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 24 [2023-02-15 02:08:42,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986013009] [2023-02-15 02:08:42,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:08:42,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-15 02:08:42,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:42,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-15 02:08:42,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-02-15 02:08:42,365 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 14 states have internal predecessors, (57), 8 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:42,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:42,781 INFO L93 Difference]: Finished difference Result 406 states and 473 transitions. [2023-02-15 02:08:42,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 02:08:42,781 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 14 states have internal predecessors, (57), 8 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-02-15 02:08:42,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:42,783 INFO L225 Difference]: With dead ends: 406 [2023-02-15 02:08:42,783 INFO L226 Difference]: Without dead ends: 330 [2023-02-15 02:08:42,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 61 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=289, Invalid=1271, Unknown=0, NotChecked=0, Total=1560 [2023-02-15 02:08:42,797 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 126 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:42,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 134 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 02:08:42,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-02-15 02:08:42,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 260. [2023-02-15 02:08:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 214 states have (on average 1.1682242990654206) internal successors, (250), 219 states have internal predecessors, (250), 44 states have call successors, (44), 40 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 294 transitions. [2023-02-15 02:08:42,829 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 294 transitions. Word has length 38 [2023-02-15 02:08:42,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:42,830 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 294 transitions. [2023-02-15 02:08:42,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 14 states have internal predecessors, (57), 8 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:42,830 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 294 transitions. [2023-02-15 02:08:42,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 02:08:42,831 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:42,831 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-02-15 02:08:42,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-15 02:08:43,035 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,SelfDestructingSolverStorable14 [2023-02-15 02:08:43,036 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:43,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:43,036 INFO L85 PathProgramCache]: Analyzing trace with hash 917101277, now seen corresponding path program 2 times [2023-02-15 02:08:43,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:43,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472705776] [2023-02-15 02:08:43,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:43,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:43,168 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:43,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:43,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472705776] [2023-02-15 02:08:43,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472705776] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:43,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693165202] [2023-02-15 02:08:43,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 02:08:43,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:43,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:43,170 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) [2023-02-15 02:08:43,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-15 02:08:43,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 02:08:43,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:08:43,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 02:08:43,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:43,240 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:43,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:08:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:43,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693165202] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:08:43,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:08:43,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2023-02-15 02:08:43,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543711196] [2023-02-15 02:08:43,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:08:43,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-15 02:08:43,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:43,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-15 02:08:43,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2023-02-15 02:08:43,402 INFO L87 Difference]: Start difference. First operand 260 states and 294 transitions. Second operand has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:44,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:44,279 INFO L93 Difference]: Finished difference Result 582 states and 644 transitions. [2023-02-15 02:08:44,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-02-15 02:08:44,279 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-02-15 02:08:44,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:44,281 INFO L225 Difference]: With dead ends: 582 [2023-02-15 02:08:44,281 INFO L226 Difference]: Without dead ends: 580 [2023-02-15 02:08:44,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2097 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1407, Invalid=5733, Unknown=0, NotChecked=0, Total=7140 [2023-02-15 02:08:44,282 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 447 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:44,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 137 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 02:08:44,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-02-15 02:08:44,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 301. [2023-02-15 02:08:44,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 248 states have (on average 1.1733870967741935) internal successors, (291), 253 states have internal predecessors, (291), 51 states have call successors, (51), 47 states have call predecessors, (51), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 342 transitions. [2023-02-15 02:08:44,309 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 342 transitions. Word has length 38 [2023-02-15 02:08:44,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:44,309 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 342 transitions. [2023-02-15 02:08:44,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:44,310 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 342 transitions. [2023-02-15 02:08:44,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-15 02:08:44,310 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:44,310 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-15 02:08:44,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-15 02:08:44,515 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,SelfDestructingSolverStorable15 [2023-02-15 02:08:44,515 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:44,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:44,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1885503363, now seen corresponding path program 3 times [2023-02-15 02:08:44,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:44,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446678695] [2023-02-15 02:08:44,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:44,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 68 proven. 39 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 02:08:44,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:44,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446678695] [2023-02-15 02:08:44,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446678695] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:44,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457001635] [2023-02-15 02:08:44,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 02:08:44,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:44,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:44,618 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) [2023-02-15 02:08:44,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-15 02:08:44,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-15 02:08:44,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:08:44,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 02:08:44,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:44,681 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 82 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-02-15 02:08:44,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:08:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 82 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-02-15 02:08:44,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457001635] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:08:44,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:08:44,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2023-02-15 02:08:44,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260509160] [2023-02-15 02:08:44,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:08:44,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 02:08:44,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:44,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 02:08:44,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-02-15 02:08:44,697 INFO L87 Difference]: Start difference. First operand 301 states and 342 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 7 states have call successors, (11), 7 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:44,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:44,818 INFO L93 Difference]: Finished difference Result 334 states and 380 transitions. [2023-02-15 02:08:44,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 02:08:44,819 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 7 states have call successors, (11), 7 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-02-15 02:08:44,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:44,819 INFO L225 Difference]: With dead ends: 334 [2023-02-15 02:08:44,819 INFO L226 Difference]: Without dead ends: 142 [2023-02-15 02:08:44,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2023-02-15 02:08:44,821 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:44,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 77 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 02:08:44,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-02-15 02:08:44,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 118. [2023-02-15 02:08:44,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:44,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2023-02-15 02:08:44,833 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 50 [2023-02-15 02:08:44,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:44,834 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2023-02-15 02:08:44,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 7 states have call successors, (11), 7 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:44,834 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2023-02-15 02:08:44,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-02-15 02:08:44,835 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:44,836 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:08:44,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-02-15 02:08:45,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-15 02:08:45,041 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:45,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:45,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1446440850, now seen corresponding path program 4 times [2023-02-15 02:08:45,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:45,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629629558] [2023-02-15 02:08:45,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:45,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:45,285 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:45,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:45,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629629558] [2023-02-15 02:08:45,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629629558] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:45,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227723820] [2023-02-15 02:08:45,286 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 02:08:45,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:45,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:45,287 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:08:45,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-15 02:08:45,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 02:08:45,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:08:45,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-15 02:08:45,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:45,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:08:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:45,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227723820] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:08:45,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:08:45,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 43 [2023-02-15 02:08:45,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337989334] [2023-02-15 02:08:45,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:08:45,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-02-15 02:08:45,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:45,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-02-15 02:08:45,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1626, Unknown=0, NotChecked=0, Total=1892 [2023-02-15 02:08:45,732 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand has 44 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 24 states have internal predecessors, (102), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:46,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:46,935 INFO L93 Difference]: Finished difference Result 247 states and 263 transitions. [2023-02-15 02:08:46,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-02-15 02:08:46,936 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 24 states have internal predecessors, (102), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-02-15 02:08:46,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:46,937 INFO L225 Difference]: With dead ends: 247 [2023-02-15 02:08:46,937 INFO L226 Difference]: Without dead ends: 246 [2023-02-15 02:08:46,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3500 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2303, Invalid=9907, Unknown=0, NotChecked=0, Total=12210 [2023-02-15 02:08:46,940 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 623 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:46,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 83 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 02:08:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-02-15 02:08:46,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 238. [2023-02-15 02:08:46,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 198 states have (on average 1.0303030303030303) internal successors, (204), 198 states have internal predecessors, (204), 39 states have call successors, (39), 39 states have call predecessors, (39), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:46,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 243 transitions. [2023-02-15 02:08:46,965 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 243 transitions. Word has length 62 [2023-02-15 02:08:46,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:46,966 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 243 transitions. [2023-02-15 02:08:46,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 24 states have internal predecessors, (102), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:46,966 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 243 transitions. [2023-02-15 02:08:46,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-02-15 02:08:46,967 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:46,967 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1] [2023-02-15 02:08:46,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-15 02:08:47,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:47,172 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:47,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:47,173 INFO L85 PathProgramCache]: Analyzing trace with hash -349479622, now seen corresponding path program 2 times [2023-02-15 02:08:47,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:47,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904869310] [2023-02-15 02:08:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:47,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:47,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:47,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904869310] [2023-02-15 02:08:47,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904869310] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:47,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644874312] [2023-02-15 02:08:47,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 02:08:47,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:47,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:47,521 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:08:47,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-15 02:08:47,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 02:08:47,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:08:47,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-15 02:08:47,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:47,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:08:48,136 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:48,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644874312] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:08:48,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:08:48,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2023-02-15 02:08:48,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452004179] [2023-02-15 02:08:48,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:08:48,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-02-15 02:08:48,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:48,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-02-15 02:08:48,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2023-02-15 02:08:48,138 INFO L87 Difference]: Start difference. First operand 238 states and 243 transitions. Second operand has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:48,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:48,868 INFO L93 Difference]: Finished difference Result 279 states and 286 transitions. [2023-02-15 02:08:48,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-02-15 02:08:48,869 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-02-15 02:08:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:48,870 INFO L225 Difference]: With dead ends: 279 [2023-02-15 02:08:48,870 INFO L226 Difference]: Without dead ends: 278 [2023-02-15 02:08:48,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2355 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1350, Invalid=7392, Unknown=0, NotChecked=0, Total=8742 [2023-02-15 02:08:48,874 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 302 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:48,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 181 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 02:08:48,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-02-15 02:08:48,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 268. [2023-02-15 02:08:48,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 223 states have (on average 1.0179372197309418) internal successors, (227), 223 states have internal predecessors, (227), 44 states have call successors, (44), 44 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:48,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 271 transitions. [2023-02-15 02:08:48,906 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 271 transitions. Word has length 80 [2023-02-15 02:08:48,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:48,906 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 271 transitions. [2023-02-15 02:08:48,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:48,906 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 271 transitions. [2023-02-15 02:08:48,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-02-15 02:08:48,910 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:48,910 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:08:48,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-15 02:08:49,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:49,115 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:49,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:49,116 INFO L85 PathProgramCache]: Analyzing trace with hash -168402537, now seen corresponding path program 5 times [2023-02-15 02:08:49,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:49,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881788269] [2023-02-15 02:08:49,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:49,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:49,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:49,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:49,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881788269] [2023-02-15 02:08:49,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881788269] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:49,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903315028] [2023-02-15 02:08:49,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 02:08:49,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:49,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:49,831 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:08:49,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-15 02:08:49,891 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2023-02-15 02:08:49,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:08:49,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-15 02:08:49,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:50,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:08:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:51,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903315028] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:08:51,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:08:51,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 87 [2023-02-15 02:08:51,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773517114] [2023-02-15 02:08:51,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:08:51,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-02-15 02:08:51,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:51,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-02-15 02:08:51,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1016, Invalid=6640, Unknown=0, NotChecked=0, Total=7656 [2023-02-15 02:08:51,051 INFO L87 Difference]: Start difference. First operand 268 states and 271 transitions. Second operand has 88 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 46 states have internal predecessors, (212), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:54,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:54,683 INFO L93 Difference]: Finished difference Result 496 states and 526 transitions. [2023-02-15 02:08:54,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2023-02-15 02:08:54,684 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 46 states have internal predecessors, (212), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2023-02-15 02:08:54,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:54,685 INFO L225 Difference]: With dead ends: 496 [2023-02-15 02:08:54,685 INFO L226 Difference]: Without dead ends: 495 [2023-02-15 02:08:54,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16581 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=9505, Invalid=41797, Unknown=0, NotChecked=0, Total=51302 [2023-02-15 02:08:54,693 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1233 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:54,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1233 Valid, 96 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 02:08:54,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-02-15 02:08:54,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 484. [2023-02-15 02:08:54,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 403 states have (on average 1.022332506203474) internal successors, (412), 403 states have internal predecessors, (412), 80 states have call successors, (80), 80 states have call predecessors, (80), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:54,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 492 transitions. [2023-02-15 02:08:54,750 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 492 transitions. Word has length 128 [2023-02-15 02:08:54,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:54,750 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 492 transitions. [2023-02-15 02:08:54,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 46 states have internal predecessors, (212), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:54,751 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 492 transitions. [2023-02-15 02:08:54,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-02-15 02:08:54,752 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:54,752 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 1, 1, 1, 1, 1] [2023-02-15 02:08:54,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-15 02:08:54,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:54,957 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:08:54,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:54,957 INFO L85 PathProgramCache]: Analyzing trace with hash 734997364, now seen corresponding path program 3 times [2023-02-15 02:08:54,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:54,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941247561] [2023-02-15 02:08:54,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:54,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 0 proven. 2054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:56,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:56,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941247561] [2023-02-15 02:08:56,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941247561] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:56,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821994480] [2023-02-15 02:08:56,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 02:08:56,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:56,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:56,013 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:08:56,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-15 02:08:56,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-02-15 02:08:56,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:08:56,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 56 conjunts are in the unsatisfiable core [2023-02-15 02:08:56,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 0 proven. 2054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:56,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:08:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 0 proven. 2054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:08:57,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821994480] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:08:57,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:08:57,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 111 [2023-02-15 02:08:57,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716946691] [2023-02-15 02:08:57,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:08:57,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2023-02-15 02:08:57,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:57,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2023-02-15 02:08:57,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1628, Invalid=10804, Unknown=0, NotChecked=0, Total=12432 [2023-02-15 02:08:57,905 INFO L87 Difference]: Start difference. First operand 484 states and 492 transitions. Second operand has 112 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 58 states have internal predecessors, (272), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:09:00,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:09:00,223 INFO L93 Difference]: Finished difference Result 577 states and 591 transitions. [2023-02-15 02:09:00,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2023-02-15 02:09:00,223 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 58 states have internal predecessors, (272), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2023-02-15 02:09:00,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:09:00,226 INFO L225 Difference]: With dead ends: 577 [2023-02-15 02:09:00,226 INFO L226 Difference]: Without dead ends: 576 [2023-02-15 02:09:00,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11021 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5438, Invalid=31234, Unknown=0, NotChecked=0, Total=36672 [2023-02-15 02:09:00,243 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 796 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 02:09:00,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 262 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 02:09:00,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2023-02-15 02:09:00,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 562. [2023-02-15 02:09:00,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 468 states have (on average 1.017094017094017) internal successors, (476), 468 states have internal predecessors, (476), 93 states have call successors, (93), 93 states have call predecessors, (93), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:09:00,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 569 transitions. [2023-02-15 02:09:00,305 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 569 transitions. Word has length 164 [2023-02-15 02:09:00,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:09:00,305 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 569 transitions. [2023-02-15 02:09:00,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 58 states have internal predecessors, (272), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:09:00,305 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 569 transitions. [2023-02-15 02:09:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-02-15 02:09:00,307 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:09:00,307 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 41, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:09:00,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-15 02:09:00,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:09:00,513 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:09:00,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:09:00,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1178058702, now seen corresponding path program 6 times [2023-02-15 02:09:00,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:09:00,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475899843] [2023-02-15 02:09:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:09:00,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:09:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:09:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4963 backedges. 0 proven. 4963 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:09:03,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:09:03,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475899843] [2023-02-15 02:09:03,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475899843] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:09:03,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131365797] [2023-02-15 02:09:03,040 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 02:09:03,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:09:03,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:09:03,042 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:09:03,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-15 02:09:03,155 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2023-02-15 02:09:03,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:09:03,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 86 conjunts are in the unsatisfiable core [2023-02-15 02:09:03,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:09:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4963 backedges. 0 proven. 4963 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:09:03,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:09:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4963 backedges. 0 proven. 4963 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:09:06,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131365797] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:09:06,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:09:06,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86, 86] total 171 [2023-02-15 02:09:06,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757918438] [2023-02-15 02:09:06,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:09:06,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 172 states [2023-02-15 02:09:06,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:09:06,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2023-02-15 02:09:06,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3786, Invalid=25626, Unknown=0, NotChecked=0, Total=29412 [2023-02-15 02:09:06,916 INFO L87 Difference]: Start difference. First operand 562 states and 569 transitions. Second operand has 172 states, 169 states have (on average 2.497041420118343) internal successors, (422), 88 states have internal predecessors, (422), 84 states have call successors, (84), 84 states have call predecessors, (84), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:09:21,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:09:21,662 INFO L93 Difference]: Finished difference Result 1026 states and 1090 transitions. [2023-02-15 02:09:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 379 states. [2023-02-15 02:09:21,664 INFO L78 Accepts]: Start accepts. Automaton has has 172 states, 169 states have (on average 2.497041420118343) internal successors, (422), 88 states have internal predecessors, (422), 84 states have call successors, (84), 84 states have call predecessors, (84), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2023-02-15 02:09:21,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:09:21,666 INFO L225 Difference]: With dead ends: 1026 [2023-02-15 02:09:21,666 INFO L226 Difference]: Without dead ends: 1025 [2023-02-15 02:09:21,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 461 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70684 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=39231, Invalid=174675, Unknown=0, NotChecked=0, Total=213906 [2023-02-15 02:09:21,676 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 4122 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4122 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 02:09:21,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4122 Valid, 134 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 02:09:21,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2023-02-15 02:09:21,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1006. [2023-02-15 02:09:21,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 838 states have (on average 1.0202863961813842) internal successors, (855), 838 states have internal predecessors, (855), 167 states have call successors, (167), 167 states have call predecessors, (167), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:09:21,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1022 transitions. [2023-02-15 02:09:21,793 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1022 transitions. Word has length 254 [2023-02-15 02:09:21,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:09:21,794 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1022 transitions. [2023-02-15 02:09:21,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 172 states, 169 states have (on average 2.497041420118343) internal successors, (422), 88 states have internal predecessors, (422), 84 states have call successors, (84), 84 states have call predecessors, (84), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:09:21,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1022 transitions. [2023-02-15 02:09:21,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-02-15 02:09:21,801 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:09:21,801 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 1, 1, 1, 1, 1] [2023-02-15 02:09:21,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-02-15 02:09:22,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:09:22,006 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:09:22,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:09:22,007 INFO L85 PathProgramCache]: Analyzing trace with hash 95073512, now seen corresponding path program 4 times [2023-02-15 02:09:22,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:09:22,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819020568] [2023-02-15 02:09:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:09:22,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:09:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:09:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:09:26,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:09:26,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819020568] [2023-02-15 02:09:26,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819020568] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:09:26,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145200603] [2023-02-15 02:09:26,098 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 02:09:26,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:09:26,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:09:26,099 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:09:26,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-15 02:09:26,212 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 02:09:26,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:09:26,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 112 conjunts are in the unsatisfiable core [2023-02-15 02:09:26,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:09:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:09:26,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:09:32,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:09:32,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145200603] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:09:32,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:09:32,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112, 112] total 223 [2023-02-15 02:09:32,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722099223] [2023-02-15 02:09:32,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:09:32,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 224 states [2023-02-15 02:09:32,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:09:32,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2023-02-15 02:09:32,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6388, Invalid=43564, Unknown=0, NotChecked=0, Total=49952 [2023-02-15 02:09:32,497 INFO L87 Difference]: Start difference. First operand 1006 states and 1022 transitions. Second operand has 224 states, 221 states have (on average 2.497737556561086) internal successors, (552), 114 states have internal predecessors, (552), 110 states have call successors, (110), 110 states have call predecessors, (110), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:09:40,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:09:40,868 INFO L93 Difference]: Finished difference Result 1177 states and 1205 transitions. [2023-02-15 02:09:40,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 277 states. [2023-02-15 02:09:40,868 INFO L78 Accepts]: Start accepts. Automaton has has 224 states, 221 states have (on average 2.497737556561086) internal successors, (552), 114 states have internal predecessors, (552), 110 states have call successors, (110), 110 states have call predecessors, (110), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2023-02-15 02:09:40,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:09:40,871 INFO L225 Difference]: With dead ends: 1177 [2023-02-15 02:09:40,872 INFO L226 Difference]: Without dead ends: 1176 [2023-02-15 02:09:40,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 938 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47463 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=21846, Invalid=128310, Unknown=0, NotChecked=0, Total=150156 [2023-02-15 02:09:40,878 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1854 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1854 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 02:09:40,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1854 Valid, 453 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 02:09:40,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2023-02-15 02:09:40,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1156. [2023-02-15 02:09:40,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 963 states have (on average 1.0145379023883696) internal successors, (977), 963 states have internal predecessors, (977), 192 states have call successors, (192), 192 states have call predecessors, (192), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:09:40,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1169 transitions. [2023-02-15 02:09:40,982 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1169 transitions. Word has length 332 [2023-02-15 02:09:40,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:09:40,983 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1169 transitions. [2023-02-15 02:09:40,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 224 states, 221 states have (on average 2.497737556561086) internal successors, (552), 114 states have internal predecessors, (552), 110 states have call successors, (110), 110 states have call predecessors, (110), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:09:40,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1169 transitions. [2023-02-15 02:09:40,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-02-15 02:09:40,993 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:09:40,993 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 84, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:09:41,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-15 02:09:41,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:09:41,200 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:09:41,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:09:41,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1663037353, now seen corresponding path program 7 times [2023-02-15 02:09:41,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:09:41,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884439326] [2023-02-15 02:09:41,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:09:41,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:09:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:09:51,143 INFO L134 CoverageAnalysis]: Checked inductivity of 21002 backedges. 0 proven. 21002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:09:51,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:09:51,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884439326] [2023-02-15 02:09:51,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884439326] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:09:51,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978542142] [2023-02-15 02:09:51,144 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 02:09:51,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:09:51,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:09:51,145 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:09:51,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-15 02:09:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:09:51,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 172 conjunts are in the unsatisfiable core [2023-02-15 02:09:51,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:09:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 21002 backedges. 0 proven. 21002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:09:51,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:10:05,238 INFO L134 CoverageAnalysis]: Checked inductivity of 21002 backedges. 0 proven. 21002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:10:05,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978542142] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:10:05,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:10:05,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [172, 172, 172] total 343 [2023-02-15 02:10:05,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870176920] [2023-02-15 02:10:05,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:10:05,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 344 states [2023-02-15 02:10:05,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:10:05,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 344 interpolants. [2023-02-15 02:10:05,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14968, Invalid=103024, Unknown=0, NotChecked=0, Total=117992 [2023-02-15 02:10:05,251 INFO L87 Difference]: Start difference. First operand 1156 states and 1169 transitions. Second operand has 344 states, 341 states have (on average 2.498533724340176) internal successors, (852), 174 states have internal predecessors, (852), 170 states have call successors, (170), 170 states have call predecessors, (170), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:11:04,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:04,064 INFO L93 Difference]: Finished difference Result 2054 states and 2180 transitions. [2023-02-15 02:11:04,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 759 states. [2023-02-15 02:11:04,065 INFO L78 Accepts]: Start accepts. Automaton has has 344 states, 341 states have (on average 2.498533724340176) internal successors, (852), 174 states have internal predecessors, (852), 170 states have call successors, (170), 170 states have call predecessors, (170), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 512 [2023-02-15 02:11:04,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:04,070 INFO L225 Difference]: With dead ends: 2054 [2023-02-15 02:11:04,070 INFO L226 Difference]: Without dead ends: 2053 [2023-02-15 02:11:04,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1781 GetRequests, 852 SyntacticMatches, 0 SemanticMatches, 929 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302085 ImplicationChecksByTransitivity, 64.7s TimeCoverageRelationStatistics Valid=158113, Invalid=707717, Unknown=0, NotChecked=0, Total=865830 [2023-02-15 02:11:04,109 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6982 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 2034 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6982 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 2130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:04,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6982 Valid, 172 Invalid, 2130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2034 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-15 02:11:04,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2023-02-15 02:11:04,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 2020. [2023-02-15 02:11:04,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 1683 states have (on average 1.0184194890077243) internal successors, (1714), 1683 states have internal predecessors, (1714), 336 states have call successors, (336), 336 states have call predecessors, (336), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:11:04,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2050 transitions. [2023-02-15 02:11:04,300 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2050 transitions. Word has length 512 [2023-02-15 02:11:04,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:04,301 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 2050 transitions. [2023-02-15 02:11:04,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 344 states, 341 states have (on average 2.498533724340176) internal successors, (852), 174 states have internal predecessors, (852), 170 states have call successors, (170), 170 states have call predecessors, (170), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:11:04,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2050 transitions. [2023-02-15 02:11:04,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-02-15 02:11:04,307 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:04,307 INFO L195 NwaCegarLoop]: trace histogram [111, 111, 111, 110, 110, 110, 1, 1, 1, 1, 1] [2023-02-15 02:11:04,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-15 02:11:04,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-02-15 02:11:04,511 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:11:04,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:04,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1041726416, now seen corresponding path program 5 times [2023-02-15 02:11:04,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:04,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779399803] [2023-02-15 02:11:04,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:04,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:22,965 INFO L134 CoverageAnalysis]: Checked inductivity of 36410 backedges. 0 proven. 36410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:11:22,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:22,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779399803] [2023-02-15 02:11:22,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779399803] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:22,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710874819] [2023-02-15 02:11:22,966 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 02:11:22,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:22,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:22,968 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:22,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-15 02:11:23,876 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 111 check-sat command(s) [2023-02-15 02:11:23,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:23,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 224 conjunts are in the unsatisfiable core [2023-02-15 02:11:23,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:24,514 INFO L134 CoverageAnalysis]: Checked inductivity of 36410 backedges. 0 proven. 36410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:11:24,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:46,695 INFO L134 CoverageAnalysis]: Checked inductivity of 36410 backedges. 0 proven. 36410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:11:46,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710874819] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:46,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:46,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [224, 224, 224] total 447 [2023-02-15 02:11:46,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630019826] [2023-02-15 02:11:46,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:46,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 448 states [2023-02-15 02:11:46,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:46,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 448 interpolants. [2023-02-15 02:11:46,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25316, Invalid=174940, Unknown=0, NotChecked=0, Total=200256 [2023-02-15 02:11:46,722 INFO L87 Difference]: Start difference. First operand 2020 states and 2050 transitions. Second operand has 448 states, 445 states have (on average 2.498876404494382) internal successors, (1112), 226 states have internal predecessors, (1112), 222 states have call successors, (222), 222 states have call predecessors, (222), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:12:21,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:12:21,303 INFO L93 Difference]: Finished difference Result 2373 states and 2429 transitions. [2023-02-15 02:12:21,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 557 states. [2023-02-15 02:12:21,304 INFO L78 Accepts]: Start accepts. Automaton has has 448 states, 445 states have (on average 2.498876404494382) internal successors, (1112), 226 states have internal predecessors, (1112), 222 states have call successors, (222), 222 states have call predecessors, (222), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 668 [2023-02-15 02:12:21,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:12:21,311 INFO L225 Difference]: With dead ends: 2373 [2023-02-15 02:12:21,311 INFO L226 Difference]: Without dead ends: 2372 [2023-02-15 02:12:21,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1890 GetRequests, 1112 SyntacticMatches, 0 SemanticMatches, 778 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196787 ImplicationChecksByTransitivity, 58.0s TimeCoverageRelationStatistics Valid=87590, Invalid=520030, Unknown=0, NotChecked=0, Total=607620 [2023-02-15 02:12:21,340 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 4551 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 2044 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4551 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-15 02:12:21,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4551 Valid, 879 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2044 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-15 02:12:21,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2023-02-15 02:12:21,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2338. [2023-02-15 02:12:21,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1948 states have (on average 1.0143737166324436) internal successors, (1976), 1948 states have internal predecessors, (1976), 389 states have call successors, (389), 389 states have call predecessors, (389), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:12:21,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 2365 transitions. [2023-02-15 02:12:21,565 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 2365 transitions. Word has length 668 [2023-02-15 02:12:21,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:12:21,566 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 2365 transitions. [2023-02-15 02:12:21,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 448 states, 445 states have (on average 2.498876404494382) internal successors, (1112), 226 states have internal predecessors, (1112), 222 states have call successors, (222), 222 states have call predecessors, (222), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:12:21,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 2365 transitions. [2023-02-15 02:12:21,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2023-02-15 02:12:21,575 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:12:21,576 INFO L195 NwaCegarLoop]: trace histogram [170, 170, 169, 168, 168, 168, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:12:21,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-02-15 02:12:21,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-02-15 02:12:21,782 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 02:12:21,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:12:21,783 INFO L85 PathProgramCache]: Analyzing trace with hash 484998478, now seen corresponding path program 8 times [2023-02-15 02:12:21,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:12:21,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485826713] [2023-02-15 02:12:21,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:12:21,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms