./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 b5317dae 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-?-b5317da-m [2023-02-16 04:16:56,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 04:16:56,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 04:16:56,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 04:16:56,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 04:16:56,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 04:16:56,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 04:16:56,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 04:16:56,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 04:16:56,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 04:16:56,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 04:16:56,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 04:16:56,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 04:16:56,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 04:16:56,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 04:16:56,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 04:16:56,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 04:16:56,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 04:16:56,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 04:16:56,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 04:16:56,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 04:16:56,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 04:16:56,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 04:16:56,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 04:16:56,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 04:16:56,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 04:16:56,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 04:16:56,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 04:16:56,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 04:16:56,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 04:16:56,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 04:16:56,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 04:16:56,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 04:16:56,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 04:16:56,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 04:16:56,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 04:16:56,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 04:16:56,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 04:16:56,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 04:16:56,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 04:16:56,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 04:16:56,626 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-16 04:16:56,642 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 04:16:56,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 04:16:56,642 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 04:16:56,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 04:16:56,643 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 04:16:56,643 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 04:16:56,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 04:16:56,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 04:16:56,644 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 04:16:56,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 04:16:56,644 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 04:16:56,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 04:16:56,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 04:16:56,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 04:16:56,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 04:16:56,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 04:16:56,645 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-16 04:16:56,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 04:16:56,645 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 04:16:56,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 04:16:56,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 04:16:56,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 04:16:56,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 04:16:56,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 04:16:56,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 04:16:56,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 04:16:56,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 04:16:56,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 04:16:56,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 04:16:56,646 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 04:16:56,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 04:16:56,646 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 04:16:56,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 04:16:56,647 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 04:16:56,647 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ab1611c68b20ff5721c195b0d2c7506cb1678fd2a0003f8a2214f630d652abe [2023-02-16 04:16:56,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 04:16:56,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 04:16:56,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 04:16:56,819 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 04:16:56,820 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 04:16:56,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2023-02-16 04:16:57,738 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 04:16:57,879 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 04:16:57,879 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2023-02-16 04:16:57,883 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7802b7bf8/06f34f7bd1f74a9f8492023eab9e3a32/FLAG9a1cb9a19 [2023-02-16 04:16:57,892 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7802b7bf8/06f34f7bd1f74a9f8492023eab9e3a32 [2023-02-16 04:16:57,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 04:16:57,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 04:16:57,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 04:16:57,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 04:16:57,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 04:16:57,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 04:16:57" (1/1) ... [2023-02-16 04:16:57,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ac17e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:16:57, skipping insertion in model container [2023-02-16 04:16:57,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 04:16:57" (1/1) ... [2023-02-16 04:16:57,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 04:16:57,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 04:16:58,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 04:16:58,022 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 04:16:58,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 04:16:58,040 INFO L208 MainTranslator]: Completed translation [2023-02-16 04:16:58,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:16:58 WrapperNode [2023-02-16 04:16:58,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 04:16:58,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 04:16:58,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 04:16:58,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 04:16:58,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:16:58" (1/1) ... [2023-02-16 04:16:58,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:16:58" (1/1) ... [2023-02-16 04:16:58,059 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2023-02-16 04:16:58,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 04:16:58,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 04:16:58,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 04:16:58,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 04:16:58,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:16:58" (1/1) ... [2023-02-16 04:16:58,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:16:58" (1/1) ... [2023-02-16 04:16:58,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:16:58" (1/1) ... [2023-02-16 04:16:58,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:16:58" (1/1) ... [2023-02-16 04:16:58,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:16:58" (1/1) ... [2023-02-16 04:16:58,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:16:58" (1/1) ... [2023-02-16 04:16:58,072 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:16:58" (1/1) ... [2023-02-16 04:16:58,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:16:58" (1/1) ... [2023-02-16 04:16:58,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 04:16:58,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 04:16:58,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 04:16:58,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 04:16:58,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:16:58" (1/1) ... [2023-02-16 04:16:58,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 04:16:58,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:16:58,100 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) [2023-02-16 04:16:58,106 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 [2023-02-16 04:16:58,124 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-02-16 04:16:58,124 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-02-16 04:16:58,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 04:16:58,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 04:16:58,161 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 04:16:58,163 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 04:16:58,267 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 04:16:58,274 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 04:16:58,276 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-16 04:16:58,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:16:58 BoogieIcfgContainer [2023-02-16 04:16:58,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 04:16:58,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 04:16:58,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 04:16:58,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 04:16:58,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 04:16:57" (1/3) ... [2023-02-16 04:16:58,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562f6fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 04:16:58, skipping insertion in model container [2023-02-16 04:16:58,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:16:58" (2/3) ... [2023-02-16 04:16:58,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562f6fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 04:16:58, skipping insertion in model container [2023-02-16 04:16:58,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:16:58" (3/3) ... [2023-02-16 04:16:58,288 INFO L112 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex5.c [2023-02-16 04:16:58,303 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 04:16:58,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-16 04:16:58,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 04:16:58,342 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;@7b2a5ccd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 04:16:58,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-16 04:16:58,344 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) [2023-02-16 04:16:58,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-16 04:16:58,350 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:16:58,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:16:58,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:16:58,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:16:58,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1484225386, now seen corresponding path program 1 times [2023-02-16 04:16:58,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:16:58,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517448281] [2023-02-16 04:16:58,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:16:58,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:16:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:16:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:16:58,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:16:58,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517448281] [2023-02-16 04:16:58,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517448281] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:16:58,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 04:16:58,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 04:16:58,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828067486] [2023-02-16 04:16:58,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:16:58,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 04:16:58,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:16:58,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 04:16:58,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 04:16:58,501 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) [2023-02-16 04:16:58,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:16:58,650 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2023-02-16 04:16:58,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 04:16:58,654 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 [2023-02-16 04:16:58,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:16:58,658 INFO L225 Difference]: With dead ends: 49 [2023-02-16 04:16:58,659 INFO L226 Difference]: Without dead ends: 29 [2023-02-16 04:16:58,661 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 [2023-02-16 04:16:58,663 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-02-16 04:16:58,665 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] [2023-02-16 04:16:58,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-16 04:16:58,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2023-02-16 04:16:58,686 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) [2023-02-16 04:16:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2023-02-16 04:16:58,687 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 8 [2023-02-16 04:16:58,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:16:58,688 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2023-02-16 04:16:58,688 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) [2023-02-16 04:16:58,688 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-02-16 04:16:58,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-16 04:16:58,689 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:16:58,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:16:58,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 04:16:58,690 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:16:58,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:16:58,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1484225162, now seen corresponding path program 1 times [2023-02-16 04:16:58,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:16:58,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901495776] [2023-02-16 04:16:58,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:16:58,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:16:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:16:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:16:58,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:16:58,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901495776] [2023-02-16 04:16:58,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901495776] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:16:58,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 04:16:58,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 04:16:58,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248937817] [2023-02-16 04:16:58,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:16:58,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 04:16:58,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:16:58,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 04:16:58,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 04:16:58,766 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) [2023-02-16 04:16:58,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:16:58,796 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2023-02-16 04:16:58,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 04:16:58,797 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 [2023-02-16 04:16:58,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:16:58,797 INFO L225 Difference]: With dead ends: 29 [2023-02-16 04:16:58,797 INFO L226 Difference]: Without dead ends: 28 [2023-02-16 04:16:58,798 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 [2023-02-16 04:16:58,798 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 [2023-02-16 04:16:58,799 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] [2023-02-16 04:16:58,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-16 04:16:58,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2023-02-16 04:16:58,801 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) [2023-02-16 04:16:58,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-02-16 04:16:58,802 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 8 [2023-02-16 04:16:58,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:16:58,802 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-02-16 04:16:58,802 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) [2023-02-16 04:16:58,802 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-02-16 04:16:58,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-16 04:16:58,803 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:16:58,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:16:58,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 04:16:58,803 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:16:58,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:16:58,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1233653331, now seen corresponding path program 1 times [2023-02-16 04:16:58,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:16:58,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925568401] [2023-02-16 04:16:58,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:16:58,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:16:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:16:58,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:16:58,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:16:58,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925568401] [2023-02-16 04:16:58,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925568401] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:16:58,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 04:16:58,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 04:16:58,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519286794] [2023-02-16 04:16:58,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:16:58,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 04:16:58,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:16:58,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 04:16:58,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 04:16:58,839 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) [2023-02-16 04:16:58,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:16:58,877 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2023-02-16 04:16:58,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 04:16:58,878 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 [2023-02-16 04:16:58,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:16:58,879 INFO L225 Difference]: With dead ends: 35 [2023-02-16 04:16:58,879 INFO L226 Difference]: Without dead ends: 34 [2023-02-16 04:16:58,879 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 [2023-02-16 04:16:58,883 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 [2023-02-16 04:16:58,883 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] [2023-02-16 04:16:58,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-16 04:16:58,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2023-02-16 04:16:58,887 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) [2023-02-16 04:16:58,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-02-16 04:16:58,887 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 9 [2023-02-16 04:16:58,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:16:58,887 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-02-16 04:16:58,887 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) [2023-02-16 04:16:58,888 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-02-16 04:16:58,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-16 04:16:58,888 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:16:58,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:16:58,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 04:16:58,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:16:58,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:16:58,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1233660282, now seen corresponding path program 1 times [2023-02-16 04:16:58,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:16:58,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165308586] [2023-02-16 04:16:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:16:58,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:16:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:16:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:16:58,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:16:58,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165308586] [2023-02-16 04:16:58,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165308586] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:16:58,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 04:16:58,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 04:16:58,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709928938] [2023-02-16 04:16:58,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:16:58,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 04:16:58,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:16:58,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 04:16:58,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 04:16:58,928 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) [2023-02-16 04:16:58,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:16:58,972 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-02-16 04:16:58,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 04:16:58,973 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 [2023-02-16 04:16:58,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:16:58,973 INFO L225 Difference]: With dead ends: 33 [2023-02-16 04:16:58,973 INFO L226 Difference]: Without dead ends: 32 [2023-02-16 04:16:58,973 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 [2023-02-16 04:16:58,974 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 [2023-02-16 04:16:58,974 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] [2023-02-16 04:16:58,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-16 04:16:58,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2023-02-16 04:16:58,977 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) [2023-02-16 04:16:58,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-02-16 04:16:58,978 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 9 [2023-02-16 04:16:58,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:16:58,978 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-02-16 04:16:58,978 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) [2023-02-16 04:16:58,978 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-02-16 04:16:58,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-16 04:16:58,979 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:16:58,979 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:16:58,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-16 04:16:58,979 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:16:58,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:16:58,979 INFO L85 PathProgramCache]: Analyzing trace with hash -525255754, now seen corresponding path program 1 times [2023-02-16 04:16:58,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:16:58,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145419543] [2023-02-16 04:16:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:16:58,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:16:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:16:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:16:59,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:16:59,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145419543] [2023-02-16 04:16:59,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145419543] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:16:59,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444872005] [2023-02-16 04:16:59,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:16:59,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:16:59,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:16:59,033 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) [2023-02-16 04:16:59,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 04:16:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:16:59,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 04:16:59,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:16:59,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:16:59,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:16:59,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:16:59,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444872005] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:16:59,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:16:59,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-16 04:16:59,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558769564] [2023-02-16 04:16:59,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:16:59,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 04:16:59,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:16:59,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 04:16:59,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-16 04:16:59,149 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) [2023-02-16 04:16:59,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:16:59,237 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2023-02-16 04:16:59,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 04:16:59,237 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 [2023-02-16 04:16:59,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:16:59,241 INFO L225 Difference]: With dead ends: 66 [2023-02-16 04:16:59,242 INFO L226 Difference]: Without dead ends: 65 [2023-02-16 04:16:59,245 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 [2023-02-16 04:16:59,246 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 [2023-02-16 04:16:59,247 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] [2023-02-16 04:16:59,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-02-16 04:16:59,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 47. [2023-02-16 04:16:59,258 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) [2023-02-16 04:16:59,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2023-02-16 04:16:59,259 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 14 [2023-02-16 04:16:59,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:16:59,259 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2023-02-16 04:16:59,259 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) [2023-02-16 04:16:59,259 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2023-02-16 04:16:59,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-16 04:16:59,260 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:16:59,260 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:16:59,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-16 04:16:59,469 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 [2023-02-16 04:16:59,469 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:16:59,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:16:59,470 INFO L85 PathProgramCache]: Analyzing trace with hash -525255530, now seen corresponding path program 1 times [2023-02-16 04:16:59,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:16:59,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051962829] [2023-02-16 04:16:59,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:16:59,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:16:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:16:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:16:59,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:16:59,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051962829] [2023-02-16 04:16:59,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051962829] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:16:59,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868265663] [2023-02-16 04:16:59,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:16:59,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:16:59,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:16:59,555 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) [2023-02-16 04:16:59,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 04:16:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:16:59,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 04:16:59,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:16:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:16:59,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 04:16:59,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868265663] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:16:59,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 04:16:59,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-02-16 04:16:59,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311961198] [2023-02-16 04:16:59,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:16:59,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 04:16:59,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:16:59,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 04:16:59,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-02-16 04:16:59,605 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) [2023-02-16 04:16:59,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:16:59,651 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2023-02-16 04:16:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 04:16:59,651 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 [2023-02-16 04:16:59,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:16:59,652 INFO L225 Difference]: With dead ends: 60 [2023-02-16 04:16:59,652 INFO L226 Difference]: Without dead ends: 59 [2023-02-16 04:16:59,652 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 [2023-02-16 04:16:59,653 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 [2023-02-16 04:16:59,653 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] [2023-02-16 04:16:59,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-16 04:16:59,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2023-02-16 04:16:59,658 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) [2023-02-16 04:16:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2023-02-16 04:16:59,659 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 14 [2023-02-16 04:16:59,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:16:59,659 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2023-02-16 04:16:59,659 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) [2023-02-16 04:16:59,659 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-02-16 04:16:59,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-16 04:16:59,660 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:16:59,660 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:16:59,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-16 04:16:59,866 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 [2023-02-16 04:16:59,867 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:16:59,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:16:59,867 INFO L85 PathProgramCache]: Analyzing trace with hash 909324273, now seen corresponding path program 1 times [2023-02-16 04:16:59,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:16:59,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404456326] [2023-02-16 04:16:59,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:16:59,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:16:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:16:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:16:59,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:16:59,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404456326] [2023-02-16 04:16:59,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404456326] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:16:59,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119589507] [2023-02-16 04:16:59,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:16:59,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:16:59,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:16:59,915 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) [2023-02-16 04:16:59,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 04:16:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:16:59,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 04:16:59,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:16:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:16:59,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:17:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:00,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119589507] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:17:00,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:17:00,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-16 04:17:00,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378114076] [2023-02-16 04:17:00,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:17:00,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 04:17:00,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:17:00,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 04:17:00,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-02-16 04:17:00,003 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) [2023-02-16 04:17:00,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:17:00,224 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2023-02-16 04:17:00,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-16 04:17:00,224 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 [2023-02-16 04:17:00,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:17:00,225 INFO L225 Difference]: With dead ends: 101 [2023-02-16 04:17:00,225 INFO L226 Difference]: Without dead ends: 99 [2023-02-16 04:17:00,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2023-02-16 04:17:00,226 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 [2023-02-16 04:17:00,226 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] [2023-02-16 04:17:00,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-02-16 04:17:00,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2023-02-16 04:17:00,232 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) [2023-02-16 04:17:00,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 90 transitions. [2023-02-16 04:17:00,233 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 90 transitions. Word has length 14 [2023-02-16 04:17:00,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:17:00,233 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 90 transitions. [2023-02-16 04:17:00,234 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) [2023-02-16 04:17:00,234 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 90 transitions. [2023-02-16 04:17:00,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-16 04:17:00,235 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:17:00,235 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:17:00,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-16 04:17:00,439 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 [2023-02-16 04:17:00,440 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:17:00,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:17:00,440 INFO L85 PathProgramCache]: Analyzing trace with hash 909324497, now seen corresponding path program 1 times [2023-02-16 04:17:00,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:17:00,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766938046] [2023-02-16 04:17:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:00,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:17:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:00,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:17:00,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766938046] [2023-02-16 04:17:00,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766938046] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:17:00,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763560368] [2023-02-16 04:17:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:00,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:17:00,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:17:00,480 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) [2023-02-16 04:17:00,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 04:17:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:00,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 04:17:00,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:17:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:00,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:17:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:00,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763560368] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:17:00,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:17:00,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-16 04:17:00,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203843529] [2023-02-16 04:17:00,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:17:00,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 04:17:00,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:17:00,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 04:17:00,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-02-16 04:17:00,569 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) [2023-02-16 04:17:00,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:17:00,827 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2023-02-16 04:17:00,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-02-16 04:17:00,827 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 [2023-02-16 04:17:00,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:17:00,828 INFO L225 Difference]: With dead ends: 117 [2023-02-16 04:17:00,828 INFO L226 Difference]: Without dead ends: 115 [2023-02-16 04:17:00,829 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 [2023-02-16 04:17:00,829 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 [2023-02-16 04:17:00,830 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] [2023-02-16 04:17:00,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-02-16 04:17:00,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 89. [2023-02-16 04:17:00,837 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) [2023-02-16 04:17:00,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2023-02-16 04:17:00,838 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 14 [2023-02-16 04:17:00,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:17:00,838 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2023-02-16 04:17:00,838 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) [2023-02-16 04:17:00,838 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2023-02-16 04:17:00,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-16 04:17:00,839 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:17:00,839 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:17:00,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 04:17:01,043 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 [2023-02-16 04:17:01,043 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:17:01,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:17:01,044 INFO L85 PathProgramCache]: Analyzing trace with hash 896947802, now seen corresponding path program 1 times [2023-02-16 04:17:01,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:17:01,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254615113] [2023-02-16 04:17:01,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:01,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:17:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:01,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:17:01,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254615113] [2023-02-16 04:17:01,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254615113] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:17:01,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105473256] [2023-02-16 04:17:01,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:01,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:17:01,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:17:01,087 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) [2023-02-16 04:17:01,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 04:17:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:01,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 04:17:01,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:17:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:01,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 04:17:01,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105473256] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:17:01,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 04:17:01,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-02-16 04:17:01,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10737737] [2023-02-16 04:17:01,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:17:01,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 04:17:01,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:17:01,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 04:17:01,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-02-16 04:17:01,130 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) [2023-02-16 04:17:01,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:17:01,182 INFO L93 Difference]: Finished difference Result 102 states and 123 transitions. [2023-02-16 04:17:01,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 04:17:01,182 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 [2023-02-16 04:17:01,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:17:01,183 INFO L225 Difference]: With dead ends: 102 [2023-02-16 04:17:01,183 INFO L226 Difference]: Without dead ends: 101 [2023-02-16 04:17:01,183 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 [2023-02-16 04:17:01,183 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 [2023-02-16 04:17:01,184 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] [2023-02-16 04:17:01,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-16 04:17:01,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2023-02-16 04:17:01,192 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) [2023-02-16 04:17:01,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 113 transitions. [2023-02-16 04:17:01,195 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 113 transitions. Word has length 15 [2023-02-16 04:17:01,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:17:01,195 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 113 transitions. [2023-02-16 04:17:01,195 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) [2023-02-16 04:17:01,195 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 113 transitions. [2023-02-16 04:17:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-16 04:17:01,197 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:17:01,197 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:17:01,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 04:17:01,403 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 [2023-02-16 04:17:01,404 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:17:01,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:17:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1875718568, now seen corresponding path program 1 times [2023-02-16 04:17:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:17:01,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220510073] [2023-02-16 04:17:01,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:01,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:17:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:01,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:17:01,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220510073] [2023-02-16 04:17:01,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220510073] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:17:01,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111937608] [2023-02-16 04:17:01,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:01,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:17:01,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:17:01,438 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) [2023-02-16 04:17:01,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 04:17:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:01,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 04:17:01,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:17:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:01,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:17:01,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:01,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111937608] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:17:01,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:17:01,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-16 04:17:01,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617068866] [2023-02-16 04:17:01,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:17:01,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 04:17:01,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:17:01,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 04:17:01,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-02-16 04:17:01,538 INFO L87 Difference]: Start difference. First operand 94 states and 113 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) [2023-02-16 04:17:01,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:17:01,792 INFO L93 Difference]: Finished difference Result 139 states and 165 transitions. [2023-02-16 04:17:01,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-16 04:17:01,793 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 [2023-02-16 04:17:01,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:17:01,794 INFO L225 Difference]: With dead ends: 139 [2023-02-16 04:17:01,794 INFO L226 Difference]: Without dead ends: 137 [2023-02-16 04:17:01,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=608, Unknown=0, NotChecked=0, Total=812 [2023-02-16 04:17:01,795 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 86 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 04:17:01,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 57 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 04:17:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-02-16 04:17:01,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 113. [2023-02-16 04:17:01,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 93 states have (on average 1.2903225806451613) internal successors, (120), 95 states have internal predecessors, (120), 17 states have call successors, (17), 17 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:17:01,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 137 transitions. [2023-02-16 04:17:01,806 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 137 transitions. Word has length 15 [2023-02-16 04:17:01,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:17:01,806 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 137 transitions. [2023-02-16 04:17:01,806 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) [2023-02-16 04:17:01,806 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 137 transitions. [2023-02-16 04:17:01,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-16 04:17:01,807 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:17:01,807 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:17:01,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 04:17:02,015 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 [2023-02-16 04:17:02,016 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:17:02,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:17:02,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1875711617, now seen corresponding path program 1 times [2023-02-16 04:17:02,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:17:02,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674419956] [2023-02-16 04:17:02,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:02,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:17:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:02,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:02,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:17:02,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674419956] [2023-02-16 04:17:02,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674419956] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:17:02,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033495341] [2023-02-16 04:17:02,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:02,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:17:02,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:17:02,059 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) [2023-02-16 04:17:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:02,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 04:17:02,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 04:17:02,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:17:02,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:02,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:17:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:02,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033495341] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:17:02,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:17:02,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-16 04:17:02,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822202580] [2023-02-16 04:17:02,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:17:02,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 04:17:02,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:17:02,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 04:17:02,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-02-16 04:17:02,150 INFO L87 Difference]: Start difference. First operand 113 states and 137 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) [2023-02-16 04:17:02,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:17:02,227 INFO L93 Difference]: Finished difference Result 113 states and 137 transitions. [2023-02-16 04:17:02,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 04:17:02,228 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 [2023-02-16 04:17:02,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:17:02,228 INFO L225 Difference]: With dead ends: 113 [2023-02-16 04:17:02,228 INFO L226 Difference]: Without dead ends: 112 [2023-02-16 04:17:02,229 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 [2023-02-16 04:17:02,229 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 40 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 04:17:02,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 43 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 04:17:02,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-16 04:17:02,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 77. [2023-02-16 04:17:02,235 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) [2023-02-16 04:17:02,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2023-02-16 04:17:02,236 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 15 [2023-02-16 04:17:02,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:17:02,236 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2023-02-16 04:17:02,236 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) [2023-02-16 04:17:02,236 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2023-02-16 04:17:02,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 04:17:02,237 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:17:02,237 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:17:02,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-16 04:17:02,451 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 [2023-02-16 04:17:02,451 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:17:02,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:17:02,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1504515633, now seen corresponding path program 1 times [2023-02-16 04:17:02,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:17:02,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369914429] [2023-02-16 04:17:02,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:02,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:17:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:02,523 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:02,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:17:02,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369914429] [2023-02-16 04:17:02,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369914429] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:17:02,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011637285] [2023-02-16 04:17:02,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:02,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:17:02,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:17:02,524 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) [2023-02-16 04:17:02,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 04:17:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:02,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-16 04:17:02,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:17:02,622 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:02,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:17:02,711 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:02,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011637285] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:17:02,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:17:02,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 22 [2023-02-16 04:17:02,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390828696] [2023-02-16 04:17:02,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:17:02,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-16 04:17:02,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:17:02,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-16 04:17:02,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2023-02-16 04:17:02,713 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 13 states have internal predecessors, (49), 6 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) [2023-02-16 04:17:03,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:17:03,399 INFO L93 Difference]: Finished difference Result 181 states and 209 transitions. [2023-02-16 04:17:03,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-16 04:17:03,401 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 13 states have internal predecessors, (49), 6 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 [2023-02-16 04:17:03,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:17:03,401 INFO L225 Difference]: With dead ends: 181 [2023-02-16 04:17:03,401 INFO L226 Difference]: Without dead ends: 159 [2023-02-16 04:17:03,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=506, Invalid=2146, Unknown=0, NotChecked=0, Total=2652 [2023-02-16 04:17:03,403 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 284 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 04:17:03,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 126 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 04:17:03,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-02-16 04:17:03,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 91. [2023-02-16 04:17:03,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 76 states have internal predecessors, (92), 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) [2023-02-16 04:17:03,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2023-02-16 04:17:03,411 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 26 [2023-02-16 04:17:03,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:17:03,411 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2023-02-16 04:17:03,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 13 states have internal predecessors, (49), 6 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) [2023-02-16 04:17:03,411 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2023-02-16 04:17:03,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 04:17:03,412 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:17:03,412 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:17:03,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 04:17:03,619 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 [2023-02-16 04:17:03,619 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:17:03,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:17:03,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1504515857, now seen corresponding path program 1 times [2023-02-16 04:17:03,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:17:03,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902669577] [2023-02-16 04:17:03,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:03,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:17:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:03,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:17:03,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902669577] [2023-02-16 04:17:03,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902669577] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:17:03,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667510641] [2023-02-16 04:17:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:03,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:17:03,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:17:03,680 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) [2023-02-16 04:17:03,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-16 04:17:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:03,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-16 04:17:03,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:17:03,744 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:03,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:17:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:03,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667510641] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:17:03,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:17:03,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 21 [2023-02-16 04:17:03,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636202096] [2023-02-16 04:17:03,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:17:03,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-16 04:17:03,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:17:03,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-16 04:17:03,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-02-16 04:17:03,853 INFO L87 Difference]: Start difference. First operand 91 states and 106 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) [2023-02-16 04:17:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:17:04,227 INFO L93 Difference]: Finished difference Result 168 states and 191 transitions. [2023-02-16 04:17:04,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-02-16 04:17:04,227 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 [2023-02-16 04:17:04,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:17:04,228 INFO L225 Difference]: With dead ends: 168 [2023-02-16 04:17:04,228 INFO L226 Difference]: Without dead ends: 166 [2023-02-16 04:17:04,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=456, Invalid=1896, Unknown=0, NotChecked=0, Total=2352 [2023-02-16 04:17:04,229 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 206 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 04:17:04,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 79 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 04:17:04,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-02-16 04:17:04,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 134. [2023-02-16 04:17:04,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 111 states have (on average 1.1891891891891893) internal successors, (132), 112 states have internal predecessors, (132), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:17:04,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2023-02-16 04:17:04,240 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 26 [2023-02-16 04:17:04,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:17:04,240 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2023-02-16 04:17:04,240 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) [2023-02-16 04:17:04,241 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2023-02-16 04:17:04,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 04:17:04,241 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:17:04,241 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:17:04,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-16 04:17:04,445 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 [2023-02-16 04:17:04,446 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:17:04,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:17:04,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1343457996, now seen corresponding path program 2 times [2023-02-16 04:17:04,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:17:04,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288154413] [2023-02-16 04:17:04,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:04,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:17:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:04,501 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:04,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:17:04,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288154413] [2023-02-16 04:17:04,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288154413] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:17:04,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346897513] [2023-02-16 04:17:04,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 04:17:04,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:17:04,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:17:04,503 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) [2023-02-16 04:17:04,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-16 04:17:04,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 04:17:04,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:17:04,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-16 04:17:04,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:17:04,563 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:04,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:17:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:04,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346897513] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:17:04,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:17:04,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2023-02-16 04:17:04,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388678738] [2023-02-16 04:17:04,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:17:04,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-16 04:17:04,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:17:04,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-16 04:17:04,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-02-16 04:17:04,648 INFO L87 Difference]: Start difference. First operand 134 states and 153 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) [2023-02-16 04:17:05,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:17:05,027 INFO L93 Difference]: Finished difference Result 230 states and 260 transitions. [2023-02-16 04:17:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-02-16 04:17:05,029 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 [2023-02-16 04:17:05,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:17:05,029 INFO L225 Difference]: With dead ends: 230 [2023-02-16 04:17:05,029 INFO L226 Difference]: Without dead ends: 228 [2023-02-16 04:17:05,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=437, Invalid=1725, Unknown=0, NotChecked=0, Total=2162 [2023-02-16 04:17:05,031 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 131 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 04:17:05,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 103 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 04:17:05,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-02-16 04:17:05,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 133. [2023-02-16 04:17:05,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 110 states have (on average 1.190909090909091) internal successors, (131), 111 states have internal predecessors, (131), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:17:05,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 152 transitions. [2023-02-16 04:17:05,043 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 152 transitions. Word has length 26 [2023-02-16 04:17:05,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:17:05,043 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 152 transitions. [2023-02-16 04:17:05,043 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) [2023-02-16 04:17:05,043 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 152 transitions. [2023-02-16 04:17:05,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-16 04:17:05,044 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:17:05,044 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:17:05,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-16 04:17:05,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-16 04:17:05,249 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:17:05,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:17:05,249 INFO L85 PathProgramCache]: Analyzing trace with hash 582178055, now seen corresponding path program 2 times [2023-02-16 04:17:05,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:17:05,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167122143] [2023-02-16 04:17:05,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:05,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:17:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:05,303 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 13 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-16 04:17:05,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:17:05,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167122143] [2023-02-16 04:17:05,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167122143] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:17:05,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524221726] [2023-02-16 04:17:05,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 04:17:05,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:17:05,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:17:05,305 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) [2023-02-16 04:17:05,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-16 04:17:05,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 04:17:05,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:17:05,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-16 04:17:05,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:17:05,413 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:05,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:17:05,534 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:05,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524221726] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:17:05,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:17:05,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 12] total 27 [2023-02-16 04:17:05,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118021626] [2023-02-16 04:17:05,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:17:05,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-16 04:17:05,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:17:05,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-16 04:17:05,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2023-02-16 04:17:05,535 INFO L87 Difference]: Start difference. First operand 133 states and 152 transitions. Second operand has 28 states, 25 states have (on average 2.8) internal successors, (70), 16 states have internal predecessors, (70), 13 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) [2023-02-16 04:17:06,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:17:06,703 INFO L93 Difference]: Finished difference Result 527 states and 605 transitions. [2023-02-16 04:17:06,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-02-16 04:17:06,703 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.8) internal successors, (70), 16 states have internal predecessors, (70), 13 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) Word has length 32 [2023-02-16 04:17:06,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:17:06,704 INFO L225 Difference]: With dead ends: 527 [2023-02-16 04:17:06,704 INFO L226 Difference]: Without dead ends: 525 [2023-02-16 04:17:06,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2225 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1240, Invalid=6770, Unknown=0, NotChecked=0, Total=8010 [2023-02-16 04:17:06,706 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 506 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 04:17:06,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 107 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 04:17:06,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2023-02-16 04:17:06,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 273. [2023-02-16 04:17:06,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 226 states have (on average 1.1946902654867257) internal successors, (270), 229 states have internal predecessors, (270), 45 states have call successors, (45), 43 states have call predecessors, (45), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:17:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 315 transitions. [2023-02-16 04:17:06,736 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 315 transitions. Word has length 32 [2023-02-16 04:17:06,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:17:06,736 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 315 transitions. [2023-02-16 04:17:06,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.8) internal successors, (70), 16 states have internal predecessors, (70), 13 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) [2023-02-16 04:17:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 315 transitions. [2023-02-16 04:17:06,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-16 04:17:06,739 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:17:06,739 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-02-16 04:17:06,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-16 04:17:06,945 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 [2023-02-16 04:17:06,946 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:17:06,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:17:06,946 INFO L85 PathProgramCache]: Analyzing trace with hash 917101277, now seen corresponding path program 2 times [2023-02-16 04:17:06,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:17:06,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651331358] [2023-02-16 04:17:06,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:06,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:17:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:07,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:17:07,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651331358] [2023-02-16 04:17:07,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651331358] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:17:07,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068085328] [2023-02-16 04:17:07,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 04:17:07,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:17:07,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:17:07,067 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) [2023-02-16 04:17:07,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-16 04:17:07,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 04:17:07,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:17:07,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-16 04:17:07,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:17:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:07,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:17:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:07,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068085328] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:17:07,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:17:07,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2023-02-16 04:17:07,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977234638] [2023-02-16 04:17:07,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:17:07,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-16 04:17:07,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:17:07,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-16 04:17:07,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2023-02-16 04:17:07,289 INFO L87 Difference]: Start difference. First operand 273 states and 315 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) [2023-02-16 04:17:08,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:17:08,208 INFO L93 Difference]: Finished difference Result 785 states and 887 transitions. [2023-02-16 04:17:08,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-02-16 04:17:08,208 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 [2023-02-16 04:17:08,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:17:08,211 INFO L225 Difference]: With dead ends: 785 [2023-02-16 04:17:08,211 INFO L226 Difference]: Without dead ends: 783 [2023-02-16 04:17:08,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1407, Invalid=5733, Unknown=0, NotChecked=0, Total=7140 [2023-02-16 04:17:08,213 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 511 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 04:17:08,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 149 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 04:17:08,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2023-02-16 04:17:08,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 325. [2023-02-16 04:17:08,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 269 states have (on average 1.1933085501858736) internal successors, (321), 272 states have internal predecessors, (321), 54 states have call successors, (54), 52 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:17:08,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 375 transitions. [2023-02-16 04:17:08,255 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 375 transitions. Word has length 38 [2023-02-16 04:17:08,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:17:08,255 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 375 transitions. [2023-02-16 04:17:08,255 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) [2023-02-16 04:17:08,255 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 375 transitions. [2023-02-16 04:17:08,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-16 04:17:08,256 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:17:08,256 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-16 04:17:08,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-16 04:17:08,462 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 [2023-02-16 04:17:08,463 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:17:08,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:17:08,463 INFO L85 PathProgramCache]: Analyzing trace with hash 811926013, now seen corresponding path program 3 times [2023-02-16 04:17:08,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:17:08,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993082907] [2023-02-16 04:17:08,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:08,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:17:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:08,609 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 24 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:08,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:17:08,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993082907] [2023-02-16 04:17:08,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993082907] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:17:08,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125544014] [2023-02-16 04:17:08,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 04:17:08,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:17:08,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:17:08,611 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) [2023-02-16 04:17:08,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-16 04:17:08,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-16 04:17:08,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:17:08,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 04:17:08,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:17:08,711 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-02-16 04:17:08,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:17:08,780 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-02-16 04:17:08,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125544014] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:17:08,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:17:08,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 8] total 23 [2023-02-16 04:17:08,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241373451] [2023-02-16 04:17:08,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:17:08,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-16 04:17:08,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:17:08,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-16 04:17:08,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-02-16 04:17:08,781 INFO L87 Difference]: Start difference. First operand 325 states and 375 transitions. Second operand has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 14 states have internal predecessors, (59), 10 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) [2023-02-16 04:17:08,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:17:08,942 INFO L93 Difference]: Finished difference Result 424 states and 494 transitions. [2023-02-16 04:17:08,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-16 04:17:08,943 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 14 states have internal predecessors, (59), 10 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 50 [2023-02-16 04:17:08,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:17:08,943 INFO L225 Difference]: With dead ends: 424 [2023-02-16 04:17:08,943 INFO L226 Difference]: Without dead ends: 86 [2023-02-16 04:17:08,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 91 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2023-02-16 04:17:08,946 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 69 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 04:17:08,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 58 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 04:17:08,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-16 04:17:08,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 81. [2023-02-16 04:17:08,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 states have internal predecessors, (68), 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) [2023-02-16 04:17:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2023-02-16 04:17:08,953 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 50 [2023-02-16 04:17:08,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:17:08,953 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2023-02-16 04:17:08,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 14 states have internal predecessors, (59), 10 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) [2023-02-16 04:17:08,953 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2023-02-16 04:17:08,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-02-16 04:17:08,954 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:17:08,954 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1] [2023-02-16 04:17:08,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-16 04:17:09,158 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 [2023-02-16 04:17:09,159 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:17:09,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:17:09,159 INFO L85 PathProgramCache]: Analyzing trace with hash -349479622, now seen corresponding path program 2 times [2023-02-16 04:17:09,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:17:09,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780103937] [2023-02-16 04:17:09,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:09,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:17:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:09,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:17:09,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780103937] [2023-02-16 04:17:09,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780103937] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:17:09,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906548450] [2023-02-16 04:17:09,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 04:17:09,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:17:09,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:17:09,496 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) [2023-02-16 04:17:09,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-16 04:17:09,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 04:17:09,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:17:09,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-16 04:17:09,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:17:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:09,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:17:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:10,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906548450] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:17:10,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:17:10,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2023-02-16 04:17:10,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747533452] [2023-02-16 04:17:10,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:17:10,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-02-16 04:17:10,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:17:10,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-02-16 04:17:10,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2023-02-16 04:17:10,137 INFO L87 Difference]: Start difference. First operand 81 states and 81 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) [2023-02-16 04:17:10,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:17:10,803 INFO L93 Difference]: Finished difference Result 168 states and 174 transitions. [2023-02-16 04:17:10,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-02-16 04:17:10,804 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 [2023-02-16 04:17:10,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:17:10,804 INFO L225 Difference]: With dead ends: 168 [2023-02-16 04:17:10,804 INFO L226 Difference]: Without dead ends: 167 [2023-02-16 04:17:10,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2309 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1306, Invalid=7250, Unknown=0, NotChecked=0, Total=8556 [2023-02-16 04:17:10,806 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 277 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 04:17:10,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 138 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 04:17:10,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-02-16 04:17:10,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2023-02-16 04:17:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 137 states have (on average 1.0072992700729928) internal successors, (138), 137 states have internal predecessors, (138), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:17:10,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2023-02-16 04:17:10,818 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 80 [2023-02-16 04:17:10,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:17:10,818 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2023-02-16 04:17:10,818 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) [2023-02-16 04:17:10,818 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2023-02-16 04:17:10,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-02-16 04:17:10,819 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:17:10,819 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 1, 1, 1, 1, 1] [2023-02-16 04:17:10,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-16 04:17:11,026 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 [2023-02-16 04:17:11,027 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:17:11,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:17:11,027 INFO L85 PathProgramCache]: Analyzing trace with hash 734997364, now seen corresponding path program 3 times [2023-02-16 04:17:11,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:17:11,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608835391] [2023-02-16 04:17:11,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:11,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:17:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 0 proven. 2054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:12,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:17:12,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608835391] [2023-02-16 04:17:12,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608835391] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:17:12,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847221707] [2023-02-16 04:17:12,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 04:17:12,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:17:12,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:17:12,164 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) [2023-02-16 04:17:12,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-16 04:17:12,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-02-16 04:17:12,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:17:12,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 56 conjunts are in the unsatisfiable core [2023-02-16 04:17:12,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:17:12,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 0 proven. 2054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:12,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:17:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 0 proven. 2054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:14,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847221707] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:17:14,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:17:14,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 111 [2023-02-16 04:17:14,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600822504] [2023-02-16 04:17:14,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:17:14,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2023-02-16 04:17:14,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:17:14,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2023-02-16 04:17:14,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1628, Invalid=10804, Unknown=0, NotChecked=0, Total=12432 [2023-02-16 04:17:14,032 INFO L87 Difference]: Start difference. First operand 165 states and 165 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) [2023-02-16 04:17:16,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:17:16,298 INFO L93 Difference]: Finished difference Result 336 states and 349 transitions. [2023-02-16 04:17:16,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-02-16 04:17:16,309 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 [2023-02-16 04:17:16,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:17:16,311 INFO L225 Difference]: With dead ends: 336 [2023-02-16 04:17:16,311 INFO L226 Difference]: Without dead ends: 335 [2023-02-16 04:17:16,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10919 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5352, Invalid=30938, Unknown=0, NotChecked=0, Total=36290 [2023-02-16 04:17:16,315 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 706 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 04:17:16,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 259 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 04:17:16,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-02-16 04:17:16,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 333. [2023-02-16 04:17:16,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 277 states have (on average 1.0036101083032491) internal successors, (278), 277 states have internal predecessors, (278), 55 states have call successors, (55), 55 states have call predecessors, (55), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:17:16,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 333 transitions. [2023-02-16 04:17:16,348 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 333 transitions. Word has length 164 [2023-02-16 04:17:16,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:17:16,348 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 333 transitions. [2023-02-16 04:17:16,349 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) [2023-02-16 04:17:16,349 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 333 transitions. [2023-02-16 04:17:16,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-02-16 04:17:16,352 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:17:16,352 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 1, 1, 1, 1, 1] [2023-02-16 04:17:16,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-16 04:17:16,557 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 [2023-02-16 04:17:16,557 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:17:16,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:17:16,558 INFO L85 PathProgramCache]: Analyzing trace with hash 95073512, now seen corresponding path program 4 times [2023-02-16 04:17:16,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:17:16,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704818545] [2023-02-16 04:17:16,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:16,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:17:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:20,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:17:20,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704818545] [2023-02-16 04:17:20,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704818545] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:17:20,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653609782] [2023-02-16 04:17:20,756 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 04:17:20,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:17:20,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:17:20,757 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) [2023-02-16 04:17:20,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-16 04:17:20,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 04:17:20,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:17:20,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 112 conjunts are in the unsatisfiable core [2023-02-16 04:17:20,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:17:21,227 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:21,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:17:27,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:27,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653609782] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:17:27,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:17:27,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112, 112] total 223 [2023-02-16 04:17:27,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506354021] [2023-02-16 04:17:27,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:17:27,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 224 states [2023-02-16 04:17:27,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:17:27,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2023-02-16 04:17:27,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6388, Invalid=43564, Unknown=0, NotChecked=0, Total=49952 [2023-02-16 04:17:27,140 INFO L87 Difference]: Start difference. First operand 333 states and 333 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) [2023-02-16 04:17:35,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:17:35,277 INFO L93 Difference]: Finished difference Result 672 states and 699 transitions. [2023-02-16 04:17:35,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2023-02-16 04:17:35,278 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 [2023-02-16 04:17:35,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:17:35,280 INFO L225 Difference]: With dead ends: 672 [2023-02-16 04:17:35,280 INFO L226 Difference]: Without dead ends: 671 [2023-02-16 04:17:35,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47249 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=21676, Invalid=127706, Unknown=0, NotChecked=0, Total=149382 [2023-02-16 04:17:35,288 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2054 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2054 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 04:17:35,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2054 Valid, 435 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-16 04:17:35,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2023-02-16 04:17:35,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 669. [2023-02-16 04:17:35,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 557 states have (on average 1.0017953321364452) internal successors, (558), 557 states have internal predecessors, (558), 111 states have call successors, (111), 111 states have call predecessors, (111), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:17:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 669 transitions. [2023-02-16 04:17:35,353 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 669 transitions. Word has length 332 [2023-02-16 04:17:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:17:35,354 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 669 transitions. [2023-02-16 04:17:35,354 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) [2023-02-16 04:17:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 669 transitions. [2023-02-16 04:17:35,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-02-16 04:17:35,365 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:17:35,366 INFO L195 NwaCegarLoop]: trace histogram [111, 111, 111, 110, 110, 110, 1, 1, 1, 1, 1] [2023-02-16 04:17:35,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-16 04:17:35,571 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 [2023-02-16 04:17:35,572 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:17:35,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:17:35,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1041726416, now seen corresponding path program 5 times [2023-02-16 04:17:35,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:17:35,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175927061] [2023-02-16 04:17:35,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:17:35,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:17:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:17:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 36410 backedges. 0 proven. 36410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:54,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:17:54,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175927061] [2023-02-16 04:17:54,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175927061] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:17:54,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082700567] [2023-02-16 04:17:54,304 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 04:17:54,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:17:54,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:17:54,305 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) [2023-02-16 04:17:54,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-16 04:17:55,203 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 111 check-sat command(s) [2023-02-16 04:17:55,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:17:55,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 224 conjunts are in the unsatisfiable core [2023-02-16 04:17:55,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:17:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 36410 backedges. 0 proven. 36410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:17:55,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:18:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 36410 backedges. 0 proven. 36410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:18:17,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082700567] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:18:17,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:18:17,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [224, 224, 224] total 447 [2023-02-16 04:18:17,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940021102] [2023-02-16 04:18:17,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:18:17,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 448 states [2023-02-16 04:18:17,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:18:17,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 448 interpolants. [2023-02-16 04:18:17,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25316, Invalid=174940, Unknown=0, NotChecked=0, Total=200256 [2023-02-16 04:18:17,681 INFO L87 Difference]: Start difference. First operand 669 states and 669 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) [2023-02-16 04:18:51,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:18:51,505 INFO L93 Difference]: Finished difference Result 1344 states and 1399 transitions. [2023-02-16 04:18:51,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 556 states. [2023-02-16 04:18:51,507 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 [2023-02-16 04:18:51,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 04:18:51,511 INFO L225 Difference]: With dead ends: 1344 [2023-02-16 04:18:51,511 INFO L226 Difference]: Without dead ends: 1343 [2023-02-16 04:18:51,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1889 GetRequests, 1112 SyntacticMatches, 0 SemanticMatches, 777 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196349 ImplicationChecksByTransitivity, 57.0s TimeCoverageRelationStatistics Valid=87252, Invalid=518810, Unknown=0, NotChecked=0, Total=606062 [2023-02-16 04:18:51,538 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 4480 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4480 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 2045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-16 04:18:51,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4480 Valid, 782 Invalid, 2045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-16 04:18:51,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2023-02-16 04:18:51,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1341. [2023-02-16 04:18:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1117 states have (on average 1.000895255147717) internal successors, (1118), 1117 states have internal predecessors, (1118), 223 states have call successors, (223), 223 states have call predecessors, (223), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:18:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1341 transitions. [2023-02-16 04:18:51,626 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1341 transitions. Word has length 668 [2023-02-16 04:18:51,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 04:18:51,627 INFO L495 AbstractCegarLoop]: Abstraction has 1341 states and 1341 transitions. [2023-02-16 04:18:51,627 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) [2023-02-16 04:18:51,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1341 transitions. [2023-02-16 04:18:51,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1341 [2023-02-16 04:18:51,637 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:18:51,637 INFO L195 NwaCegarLoop]: trace histogram [223, 223, 223, 222, 222, 222, 1, 1, 1, 1, 1] [2023-02-16 04:18:51,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-16 04:18:51,846 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 [2023-02-16 04:18:51,846 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:18:51,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:18:51,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1928845728, now seen corresponding path program 6 times [2023-02-16 04:18:51,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:18:51,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073095015] [2023-02-16 04:18:51,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:18:51,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:18:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:20:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 148074 backedges. 0 proven. 148074 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:20:34,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:20:34,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073095015] [2023-02-16 04:20:34,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073095015] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:20:34,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933194246] [2023-02-16 04:20:34,006 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-16 04:20:34,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:20:34,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:20:34,008 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) [2023-02-16 04:20:34,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-16 04:20:36,834 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 223 check-sat command(s) [2023-02-16 04:20:36,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:20:36,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 3130 conjuncts, 448 conjunts are in the unsatisfiable core [2023-02-16 04:20:36,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:20:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 148074 backedges. 0 proven. 148074 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:20:38,118 INFO L328 TraceCheckSpWp]: Computing backward predicates...