./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/NestedRecursion_2c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 26d01a9c 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/NestedRecursion_2c.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 e757bed859e5dfb8bc677e07409ebb4da6a15dd0898403a302646229a6409be5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 07:58:07,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 07:58:07,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 07:58:07,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 07:58:07,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 07:58:07,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 07:58:07,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 07:58:07,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 07:58:07,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 07:58:07,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 07:58:07,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 07:58:07,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 07:58:07,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 07:58:07,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 07:58:07,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 07:58:07,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 07:58:07,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 07:58:07,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 07:58:07,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 07:58:07,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 07:58:07,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 07:58:07,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 07:58:07,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 07:58:07,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 07:58:07,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 07:58:07,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 07:58:07,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 07:58:07,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 07:58:07,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 07:58:07,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 07:58:07,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 07:58:07,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 07:58:07,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 07:58:07,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 07:58:07,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 07:58:07,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 07:58:07,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 07:58:07,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 07:58:07,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 07:58:07,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 07:58:07,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 07:58:07,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-18 07:58:07,193 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 07:58:07,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 07:58:07,196 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 07:58:07,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 07:58:07,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 07:58:07,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 07:58:07,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 07:58:07,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 07:58:07,197 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 07:58:07,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 07:58:07,198 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 07:58:07,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 07:58:07,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 07:58:07,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 07:58:07,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 07:58:07,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 07:58:07,199 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-18 07:58:07,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 07:58:07,199 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 07:58:07,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 07:58:07,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 07:58:07,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 07:58:07,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 07:58:07,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:58:07,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 07:58:07,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 07:58:07,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 07:58:07,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 07:58:07,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 07:58:07,201 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 07:58:07,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 07:58:07,202 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 07:58:07,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 07:58:07,202 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 07:58:07,202 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e757bed859e5dfb8bc677e07409ebb4da6a15dd0898403a302646229a6409be5 [2023-02-18 07:58:07,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 07:58:07,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 07:58:07,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 07:58:07,417 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 07:58:07,417 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 07:58:07,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_2c.c [2023-02-18 07:58:08,568 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 07:58:08,687 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 07:58:08,687 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_2c.c [2023-02-18 07:58:08,691 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f79dd6a/c4f653efd4b3488eacf162be79cb0081/FLAG16f7a3f26 [2023-02-18 07:58:08,702 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f79dd6a/c4f653efd4b3488eacf162be79cb0081 [2023-02-18 07:58:08,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 07:58:08,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 07:58:08,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 07:58:08,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 07:58:08,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 07:58:08,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:58:08" (1/1) ... [2023-02-18 07:58:08,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ada817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:08, skipping insertion in model container [2023-02-18 07:58:08,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:58:08" (1/1) ... [2023-02-18 07:58:08,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 07:58:08,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 07:58:08,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:58:08,808 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 07:58:08,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:58:08,824 INFO L208 MainTranslator]: Completed translation [2023-02-18 07:58:08,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:08 WrapperNode [2023-02-18 07:58:08,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 07:58:08,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 07:58:08,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 07:58:08,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 07:58:08,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:08" (1/1) ... [2023-02-18 07:58:08,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:08" (1/1) ... [2023-02-18 07:58:08,843 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2023-02-18 07:58:08,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 07:58:08,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 07:58:08,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 07:58:08,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 07:58:08,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:08" (1/1) ... [2023-02-18 07:58:08,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:08" (1/1) ... [2023-02-18 07:58:08,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:08" (1/1) ... [2023-02-18 07:58:08,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:08" (1/1) ... [2023-02-18 07:58:08,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:08" (1/1) ... [2023-02-18 07:58:08,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:08" (1/1) ... [2023-02-18 07:58:08,858 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:08" (1/1) ... [2023-02-18 07:58:08,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:08" (1/1) ... [2023-02-18 07:58:08,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 07:58:08,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 07:58:08,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 07:58:08,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 07:58:08,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:08" (1/1) ... [2023-02-18 07:58:08,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:58:08,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:08,884 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) [2023-02-18 07:58:08,886 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 [2023-02-18 07:58:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure g [2023-02-18 07:58:08,910 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2023-02-18 07:58:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 07:58:08,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 07:58:08,950 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 07:58:08,951 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 07:58:09,022 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 07:58:09,026 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 07:58:09,026 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-18 07:58:09,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:58:09 BoogieIcfgContainer [2023-02-18 07:58:09,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 07:58:09,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 07:58:09,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 07:58:09,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 07:58:09,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 07:58:08" (1/3) ... [2023-02-18 07:58:09,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb17ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:58:09, skipping insertion in model container [2023-02-18 07:58:09,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:08" (2/3) ... [2023-02-18 07:58:09,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb17ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:58:09, skipping insertion in model container [2023-02-18 07:58:09,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:58:09" (3/3) ... [2023-02-18 07:58:09,033 INFO L112 eAbstractionObserver]: Analyzing ICFG NestedRecursion_2c.c [2023-02-18 07:58:09,045 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 07:58:09,046 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-18 07:58:09,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 07:58:09,080 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;@26195681, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 07:58:09,080 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-18 07:58:09,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 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) [2023-02-18 07:58:09,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 07:58:09,101 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:09,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:09,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:09,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:09,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1134721268, now seen corresponding path program 1 times [2023-02-18 07:58:09,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:09,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699868694] [2023-02-18 07:58:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:09,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:09,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:09,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699868694] [2023-02-18 07:58:09,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699868694] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:09,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:09,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:58:09,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106089108] [2023-02-18 07:58:09,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:09,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:58:09,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:09,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:58:09,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:58:09,329 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 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 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-02-18 07:58:09,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:09,474 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2023-02-18 07:58:09,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:58:09,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 7 [2023-02-18 07:58:09,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:09,497 INFO L225 Difference]: With dead ends: 45 [2023-02-18 07:58:09,497 INFO L226 Difference]: Without dead ends: 34 [2023-02-18 07:58:09,500 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 [2023-02-18 07:58:09,503 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 28 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:09,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 75 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:58:09,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-18 07:58:09,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2023-02-18 07:58:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 23 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 07:58:09,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2023-02-18 07:58:09,533 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 7 [2023-02-18 07:58:09,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:09,534 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2023-02-18 07:58:09,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-02-18 07:58:09,534 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-02-18 07:58:09,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 07:58:09,535 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:09,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:09,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 07:58:09,535 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:09,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:09,536 INFO L85 PathProgramCache]: Analyzing trace with hash 816620978, now seen corresponding path program 1 times [2023-02-18 07:58:09,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:09,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995784858] [2023-02-18 07:58:09,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:09,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:09,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:09,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:09,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995784858] [2023-02-18 07:58:09,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995784858] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:09,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:09,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:58:09,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576827355] [2023-02-18 07:58:09,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:09,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:58:09,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:09,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:58:09,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:58:09,576 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 5 states, 4 states have (on average 1.75) 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) [2023-02-18 07:58:09,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:09,623 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2023-02-18 07:58:09,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:58:09,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) 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 [2023-02-18 07:58:09,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:09,624 INFO L225 Difference]: With dead ends: 47 [2023-02-18 07:58:09,624 INFO L226 Difference]: Without dead ends: 46 [2023-02-18 07:58:09,625 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 [2023-02-18 07:58:09,626 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:09,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 54 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:58:09,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-02-18 07:58:09,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2023-02-18 07:58:09,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 32 states have internal predecessors, (39), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 07:58:09,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2023-02-18 07:58:09,634 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 8 [2023-02-18 07:58:09,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:09,634 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2023-02-18 07:58:09,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) 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) [2023-02-18 07:58:09,634 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2023-02-18 07:58:09,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 07:58:09,636 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:09,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:09,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 07:58:09,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:09,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:09,637 INFO L85 PathProgramCache]: Analyzing trace with hash 431664181, now seen corresponding path program 1 times [2023-02-18 07:58:09,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:09,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222545564] [2023-02-18 07:58:09,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:09,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:09,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:09,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222545564] [2023-02-18 07:58:09,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222545564] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:09,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749946716] [2023-02-18 07:58:09,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:09,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:09,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:09,711 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) [2023-02-18 07:58:09,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 07:58:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:09,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 07:58:09,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:09,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:58:09,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:09,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749946716] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:58:09,860 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:58:09,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-18 07:58:09,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695777127] [2023-02-18 07:58:09,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:58:09,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 07:58:09,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:09,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 07:58:09,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-18 07:58:09,862 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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) [2023-02-18 07:58:10,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:10,052 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2023-02-18 07:58:10,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-18 07:58:10,053 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 12 [2023-02-18 07:58:10,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:10,054 INFO L225 Difference]: With dead ends: 96 [2023-02-18 07:58:10,054 INFO L226 Difference]: Without dead ends: 95 [2023-02-18 07:58:10,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-02-18 07:58:10,055 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 139 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:10,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 104 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:58:10,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-02-18 07:58:10,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 77. [2023-02-18 07:58:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 59 states have internal predecessors, (75), 13 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-18 07:58:10,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2023-02-18 07:58:10,075 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 12 [2023-02-18 07:58:10,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:10,075 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2023-02-18 07:58:10,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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) [2023-02-18 07:58:10,076 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2023-02-18 07:58:10,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 07:58:10,076 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:10,077 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:10,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 07:58:10,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:10,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:10,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:10,284 INFO L85 PathProgramCache]: Analyzing trace with hash 574996991, now seen corresponding path program 1 times [2023-02-18 07:58:10,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:10,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292284702] [2023-02-18 07:58:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:10,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 07:58:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:10,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:10,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292284702] [2023-02-18 07:58:10,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292284702] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:10,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:10,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 07:58:10,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960877016] [2023-02-18 07:58:10,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:10,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 07:58:10,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:10,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 07:58:10,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 07:58:10,326 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:58:10,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:10,346 INFO L93 Difference]: Finished difference Result 117 states and 166 transitions. [2023-02-18 07:58:10,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 07:58:10,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-18 07:58:10,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:10,348 INFO L225 Difference]: With dead ends: 117 [2023-02-18 07:58:10,348 INFO L226 Difference]: Without dead ends: 116 [2023-02-18 07:58:10,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 07:58:10,350 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:10,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 47 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:58:10,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-18 07:58:10,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 99. [2023-02-18 07:58:10,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 75 states have internal predecessors, (92), 13 states have call successors, (13), 6 states have call predecessors, (13), 10 states have return successors, (22), 17 states have call predecessors, (22), 11 states have call successors, (22) [2023-02-18 07:58:10,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 127 transitions. [2023-02-18 07:58:10,361 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 127 transitions. Word has length 15 [2023-02-18 07:58:10,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:10,361 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 127 transitions. [2023-02-18 07:58:10,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:58:10,361 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2023-02-18 07:58:10,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 07:58:10,362 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:10,362 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:10,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 07:58:10,362 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:10,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:10,363 INFO L85 PathProgramCache]: Analyzing trace with hash 645037581, now seen corresponding path program 1 times [2023-02-18 07:58:10,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:10,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440409664] [2023-02-18 07:58:10,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:10,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:10,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 07:58:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:10,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:10,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440409664] [2023-02-18 07:58:10,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440409664] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:10,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:10,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:58:10,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235674676] [2023-02-18 07:58:10,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:10,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:58:10,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:10,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:58:10,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:58:10,391 INFO L87 Difference]: Start difference. First operand 99 states and 127 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:58:10,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:10,398 INFO L93 Difference]: Finished difference Result 99 states and 127 transitions. [2023-02-18 07:58:10,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:58:10,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-18 07:58:10,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:10,399 INFO L225 Difference]: With dead ends: 99 [2023-02-18 07:58:10,399 INFO L226 Difference]: Without dead ends: 98 [2023-02-18 07:58:10,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:58:10,400 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:10,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 32 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:58:10,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-02-18 07:58:10,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-02-18 07:58:10,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 74 states have internal predecessors, (86), 13 states have call successors, (13), 6 states have call predecessors, (13), 10 states have return successors, (22), 17 states have call predecessors, (22), 11 states have call successors, (22) [2023-02-18 07:58:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2023-02-18 07:58:10,409 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 16 [2023-02-18 07:58:10,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:10,409 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions. [2023-02-18 07:58:10,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:58:10,410 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions. [2023-02-18 07:58:10,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 07:58:10,410 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:10,410 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:10,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 07:58:10,411 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:10,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:10,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1915238450, now seen corresponding path program 1 times [2023-02-18 07:58:10,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:10,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374253045] [2023-02-18 07:58:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:10,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:10,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 07:58:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:10,458 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:10,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:10,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374253045] [2023-02-18 07:58:10,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374253045] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:10,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:10,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 07:58:10,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745953862] [2023-02-18 07:58:10,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:10,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 07:58:10,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:10,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 07:58:10,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 07:58:10,460 INFO L87 Difference]: Start difference. First operand 98 states and 121 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:58:10,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:10,530 INFO L93 Difference]: Finished difference Result 137 states and 175 transitions. [2023-02-18 07:58:10,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 07:58:10,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-02-18 07:58:10,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:10,536 INFO L225 Difference]: With dead ends: 137 [2023-02-18 07:58:10,536 INFO L226 Difference]: Without dead ends: 136 [2023-02-18 07:58:10,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-18 07:58:10,542 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 31 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:10,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 74 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:58:10,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-02-18 07:58:10,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 126. [2023-02-18 07:58:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 98 states have internal predecessors, (107), 22 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (32), 20 states have call predecessors, (32), 19 states have call successors, (32) [2023-02-18 07:58:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 161 transitions. [2023-02-18 07:58:10,564 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 161 transitions. Word has length 20 [2023-02-18 07:58:10,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:10,564 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 161 transitions. [2023-02-18 07:58:10,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:58:10,565 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 161 transitions. [2023-02-18 07:58:10,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 07:58:10,566 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:10,566 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:10,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-18 07:58:10,566 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:10,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:10,567 INFO L85 PathProgramCache]: Analyzing trace with hash 757150232, now seen corresponding path program 1 times [2023-02-18 07:58:10,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:10,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043572610] [2023-02-18 07:58:10,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:10,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:10,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 07:58:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:10,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:10,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:10,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043572610] [2023-02-18 07:58:10,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043572610] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:10,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:10,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 07:58:10,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494238598] [2023-02-18 07:58:10,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:10,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 07:58:10,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:10,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 07:58:10,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 07:58:10,639 INFO L87 Difference]: Start difference. First operand 126 states and 161 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:58:10,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:10,708 INFO L93 Difference]: Finished difference Result 156 states and 201 transitions. [2023-02-18 07:58:10,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 07:58:10,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-02-18 07:58:10,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:10,710 INFO L225 Difference]: With dead ends: 156 [2023-02-18 07:58:10,710 INFO L226 Difference]: Without dead ends: 155 [2023-02-18 07:58:10,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-18 07:58:10,711 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 30 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:10,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 73 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:58:10,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-02-18 07:58:10,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 144. [2023-02-18 07:58:10,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 103 states have (on average 1.1844660194174756) internal successors, (122), 112 states have internal predecessors, (122), 25 states have call successors, (25), 8 states have call predecessors, (25), 13 states have return successors, (37), 23 states have call predecessors, (37), 22 states have call successors, (37) [2023-02-18 07:58:10,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 184 transitions. [2023-02-18 07:58:10,720 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 184 transitions. Word has length 21 [2023-02-18 07:58:10,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:10,720 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 184 transitions. [2023-02-18 07:58:10,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:58:10,721 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 184 transitions. [2023-02-18 07:58:10,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 07:58:10,721 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:10,721 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:10,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-18 07:58:10,722 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:10,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:10,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1990628763, now seen corresponding path program 2 times [2023-02-18 07:58:10,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:10,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837714098] [2023-02-18 07:58:10,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:10,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:10,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 07:58:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:10,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:10,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837714098] [2023-02-18 07:58:10,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837714098] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:10,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248217770] [2023-02-18 07:58:10,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 07:58:10,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:10,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:10,769 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) [2023-02-18 07:58:10,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 07:58:10,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 07:58:10,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:58:10,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 07:58:10,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:10,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:58:10,864 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:10,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248217770] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:58:10,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:58:10,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-18 07:58:10,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87078269] [2023-02-18 07:58:10,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:58:10,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 07:58:10,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:10,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 07:58:10,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-02-18 07:58:10,866 INFO L87 Difference]: Start difference. First operand 144 states and 184 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 07:58:11,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:11,094 INFO L93 Difference]: Finished difference Result 215 states and 277 transitions. [2023-02-18 07:58:11,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-18 07:58:11,095 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2023-02-18 07:58:11,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:11,096 INFO L225 Difference]: With dead ends: 215 [2023-02-18 07:58:11,096 INFO L226 Difference]: Without dead ends: 214 [2023-02-18 07:58:11,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2023-02-18 07:58:11,097 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 134 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:11,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 137 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 07:58:11,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-02-18 07:58:11,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 198. [2023-02-18 07:58:11,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 142 states have (on average 1.176056338028169) internal successors, (167), 154 states have internal predecessors, (167), 34 states have call successors, (34), 11 states have call predecessors, (34), 19 states have return successors, (52), 32 states have call predecessors, (52), 31 states have call successors, (52) [2023-02-18 07:58:11,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 253 transitions. [2023-02-18 07:58:11,108 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 253 transitions. Word has length 25 [2023-02-18 07:58:11,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:11,108 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 253 transitions. [2023-02-18 07:58:11,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 07:58:11,108 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 253 transitions. [2023-02-18 07:58:11,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-18 07:58:11,109 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:11,109 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2023-02-18 07:58:11,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 07:58:11,314 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,SelfDestructingSolverStorable7 [2023-02-18 07:58:11,314 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:11,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:11,314 INFO L85 PathProgramCache]: Analyzing trace with hash -895487436, now seen corresponding path program 2 times [2023-02-18 07:58:11,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:11,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469147707] [2023-02-18 07:58:11,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:11,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:11,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:11,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469147707] [2023-02-18 07:58:11,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469147707] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:11,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095923466] [2023-02-18 07:58:11,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 07:58:11,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:11,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:11,401 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) [2023-02-18 07:58:11,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 07:58:11,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 07:58:11,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:58:11,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 07:58:11,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:11,489 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:11,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:58:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:11,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095923466] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:58:11,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:58:11,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-02-18 07:58:11,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17489412] [2023-02-18 07:58:11,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:58:11,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-18 07:58:11,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:11,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-18 07:58:11,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2023-02-18 07:58:11,594 INFO L87 Difference]: Start difference. First operand 198 states and 253 transitions. Second operand has 24 states, 21 states have (on average 2.0) internal successors, (42), 14 states have internal predecessors, (42), 10 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) [2023-02-18 07:58:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:11,925 INFO L93 Difference]: Finished difference Result 319 states and 414 transitions. [2023-02-18 07:58:11,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-18 07:58:11,926 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0) internal successors, (42), 14 states have internal predecessors, (42), 10 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 27 [2023-02-18 07:58:11,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:11,927 INFO L225 Difference]: With dead ends: 319 [2023-02-18 07:58:11,927 INFO L226 Difference]: Without dead ends: 318 [2023-02-18 07:58:11,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=554, Invalid=1252, Unknown=0, NotChecked=0, Total=1806 [2023-02-18 07:58:11,928 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 312 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:11,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 248 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 07:58:11,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-02-18 07:58:11,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 306. [2023-02-18 07:58:11,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 220 states have (on average 1.1681818181818182) internal successors, (257), 238 states have internal predecessors, (257), 52 states have call successors, (52), 17 states have call predecessors, (52), 31 states have return successors, (82), 50 states have call predecessors, (82), 49 states have call successors, (82) [2023-02-18 07:58:11,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 391 transitions. [2023-02-18 07:58:11,940 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 391 transitions. Word has length 27 [2023-02-18 07:58:11,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:11,940 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 391 transitions. [2023-02-18 07:58:11,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0) internal successors, (42), 14 states have internal predecessors, (42), 10 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) [2023-02-18 07:58:11,940 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 391 transitions. [2023-02-18 07:58:11,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-18 07:58:11,941 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:11,942 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:11,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-18 07:58:12,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:12,146 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:12,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:12,147 INFO L85 PathProgramCache]: Analyzing trace with hash -126444680, now seen corresponding path program 1 times [2023-02-18 07:58:12,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:12,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112106453] [2023-02-18 07:58:12,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:12,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:12,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 07:58:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:12,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:12,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:12,189 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-18 07:58:12,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:12,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112106453] [2023-02-18 07:58:12,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112106453] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:12,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:12,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:58:12,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298574969] [2023-02-18 07:58:12,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:12,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:58:12,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:12,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:58:12,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:58:12,191 INFO L87 Difference]: Start difference. First operand 306 states and 391 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 07:58:12,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:12,206 INFO L93 Difference]: Finished difference Result 306 states and 391 transitions. [2023-02-18 07:58:12,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 07:58:12,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2023-02-18 07:58:12,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:12,207 INFO L225 Difference]: With dead ends: 306 [2023-02-18 07:58:12,207 INFO L226 Difference]: Without dead ends: 305 [2023-02-18 07:58:12,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 07:58:12,208 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:12,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 54 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:58:12,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-02-18 07:58:12,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2023-02-18 07:58:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 220 states have (on average 1.0909090909090908) internal successors, (240), 237 states have internal predecessors, (240), 52 states have call successors, (52), 17 states have call predecessors, (52), 31 states have return successors, (82), 50 states have call predecessors, (82), 49 states have call successors, (82) [2023-02-18 07:58:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 374 transitions. [2023-02-18 07:58:12,218 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 374 transitions. Word has length 31 [2023-02-18 07:58:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:12,219 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 374 transitions. [2023-02-18 07:58:12,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 07:58:12,219 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 374 transitions. [2023-02-18 07:58:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-18 07:58:12,220 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:12,220 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:12,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-18 07:58:12,220 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:12,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:12,221 INFO L85 PathProgramCache]: Analyzing trace with hash 801174005, now seen corresponding path program 1 times [2023-02-18 07:58:12,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:12,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126630024] [2023-02-18 07:58:12,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:12,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:12,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 07:58:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:12,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:12,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:12,265 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-18 07:58:12,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:12,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126630024] [2023-02-18 07:58:12,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126630024] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:12,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:12,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 07:58:12,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501160699] [2023-02-18 07:58:12,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:12,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 07:58:12,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:12,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 07:58:12,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-18 07:58:12,267 INFO L87 Difference]: Start difference. First operand 305 states and 374 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 07:58:12,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:12,323 INFO L93 Difference]: Finished difference Result 325 states and 398 transitions. [2023-02-18 07:58:12,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 07:58:12,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2023-02-18 07:58:12,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:12,325 INFO L225 Difference]: With dead ends: 325 [2023-02-18 07:58:12,325 INFO L226 Difference]: Without dead ends: 324 [2023-02-18 07:58:12,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-02-18 07:58:12,326 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:12,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 67 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:58:12,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-02-18 07:58:12,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 321. [2023-02-18 07:58:12,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 232 states have (on average 1.0948275862068966) internal successors, (254), 249 states have internal predecessors, (254), 55 states have call successors, (55), 18 states have call predecessors, (55), 32 states have return successors, (70), 53 states have call predecessors, (70), 52 states have call successors, (70) [2023-02-18 07:58:12,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 379 transitions. [2023-02-18 07:58:12,336 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 379 transitions. Word has length 36 [2023-02-18 07:58:12,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:12,336 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 379 transitions. [2023-02-18 07:58:12,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 07:58:12,337 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 379 transitions. [2023-02-18 07:58:12,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-18 07:58:12,337 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:12,338 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:12,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-18 07:58:12,338 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:12,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:12,338 INFO L85 PathProgramCache]: Analyzing trace with hash -933409583, now seen corresponding path program 1 times [2023-02-18 07:58:12,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:12,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993893949] [2023-02-18 07:58:12,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:12,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:12,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 07:58:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:12,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:12,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-18 07:58:12,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:12,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993893949] [2023-02-18 07:58:12,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993893949] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:12,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:12,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 07:58:12,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860163351] [2023-02-18 07:58:12,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:12,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 07:58:12,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:12,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 07:58:12,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-18 07:58:12,378 INFO L87 Difference]: Start difference. First operand 321 states and 379 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 07:58:12,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:12,432 INFO L93 Difference]: Finished difference Result 322 states and 379 transitions. [2023-02-18 07:58:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 07:58:12,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2023-02-18 07:58:12,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:12,434 INFO L225 Difference]: With dead ends: 322 [2023-02-18 07:58:12,434 INFO L226 Difference]: Without dead ends: 321 [2023-02-18 07:58:12,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-02-18 07:58:12,435 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:12,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 62 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:58:12,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-02-18 07:58:12,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2023-02-18 07:58:12,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 232 states have (on average 1.0862068965517242) internal successors, (252), 248 states have internal predecessors, (252), 55 states have call successors, (55), 18 states have call predecessors, (55), 32 states have return successors, (70), 53 states have call predecessors, (70), 52 states have call successors, (70) [2023-02-18 07:58:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 377 transitions. [2023-02-18 07:58:12,444 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 377 transitions. Word has length 37 [2023-02-18 07:58:12,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:12,445 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 377 transitions. [2023-02-18 07:58:12,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 07:58:12,445 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 377 transitions. [2023-02-18 07:58:12,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-18 07:58:12,446 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:12,446 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:12,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-18 07:58:12,446 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:12,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1029918734, now seen corresponding path program 3 times [2023-02-18 07:58:12,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:12,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921478613] [2023-02-18 07:58:12,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:12,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:12,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 07:58:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 33 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:12,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:12,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921478613] [2023-02-18 07:58:12,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921478613] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:12,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052184806] [2023-02-18 07:58:12,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 07:58:12,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:12,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:12,523 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) [2023-02-18 07:58:12,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 07:58:12,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-18 07:58:12,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:58:12,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 07:58:12,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:12,616 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 33 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:12,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:58:12,731 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 33 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:12,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052184806] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:58:12,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:58:12,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-02-18 07:58:12,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31469751] [2023-02-18 07:58:12,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:58:12,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-18 07:58:12,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:12,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-18 07:58:12,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2023-02-18 07:58:12,732 INFO L87 Difference]: Start difference. First operand 320 states and 377 transitions. Second operand has 26 states, 25 states have (on average 2.2) internal successors, (55), 16 states have internal predecessors, (55), 11 states have call successors, (12), 11 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 07:58:13,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:13,254 INFO L93 Difference]: Finished difference Result 456 states and 580 transitions. [2023-02-18 07:58:13,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-02-18 07:58:13,255 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.2) internal successors, (55), 16 states have internal predecessors, (55), 11 states have call successors, (12), 11 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2023-02-18 07:58:13,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:13,256 INFO L225 Difference]: With dead ends: 456 [2023-02-18 07:58:13,256 INFO L226 Difference]: Without dead ends: 455 [2023-02-18 07:58:13,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 69 SyntacticMatches, 10 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=900, Invalid=2406, Unknown=0, NotChecked=0, Total=3306 [2023-02-18 07:58:13,258 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 480 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:13,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 156 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 07:58:13,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-02-18 07:58:13,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 428. [2023-02-18 07:58:13,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 310 states have (on average 1.0838709677419356) internal successors, (336), 332 states have internal predecessors, (336), 73 states have call successors, (73), 24 states have call predecessors, (73), 44 states have return successors, (94), 71 states have call predecessors, (94), 70 states have call successors, (94) [2023-02-18 07:58:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 503 transitions. [2023-02-18 07:58:13,272 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 503 transitions. Word has length 40 [2023-02-18 07:58:13,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:13,272 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 503 transitions. [2023-02-18 07:58:13,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.2) internal successors, (55), 16 states have internal predecessors, (55), 11 states have call successors, (12), 11 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 07:58:13,272 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 503 transitions. [2023-02-18 07:58:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-18 07:58:13,273 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:13,273 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:13,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-18 07:58:13,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:13,478 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:13,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:13,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1938510892, now seen corresponding path program 2 times [2023-02-18 07:58:13,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:13,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306083169] [2023-02-18 07:58:13,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:13,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:13,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 07:58:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:13,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:13,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-18 07:58:13,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:13,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306083169] [2023-02-18 07:58:13,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306083169] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:13,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142102427] [2023-02-18 07:58:13,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 07:58:13,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:13,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:13,546 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) [2023-02-18 07:58:13,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 07:58:13,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 07:58:13,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:58:13,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 07:58:13,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-18 07:58:13,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:58:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-18 07:58:13,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142102427] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:58:13,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:58:13,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-02-18 07:58:13,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034911983] [2023-02-18 07:58:13,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:58:13,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-18 07:58:13,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:13,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-18 07:58:13,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-02-18 07:58:13,644 INFO L87 Difference]: Start difference. First operand 428 states and 503 transitions. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-18 07:58:13,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:13,856 INFO L93 Difference]: Finished difference Result 483 states and 569 transitions. [2023-02-18 07:58:13,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-02-18 07:58:13,856 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2023-02-18 07:58:13,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:13,858 INFO L225 Difference]: With dead ends: 483 [2023-02-18 07:58:13,858 INFO L226 Difference]: Without dead ends: 482 [2023-02-18 07:58:13,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=350, Invalid=1132, Unknown=0, NotChecked=0, Total=1482 [2023-02-18 07:58:13,859 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 90 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:13,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 81 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:58:13,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-02-18 07:58:13,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2023-02-18 07:58:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 349 states have (on average 1.0830945558739256) internal successors, (378), 374 states have internal predecessors, (378), 82 states have call successors, (82), 27 states have call predecessors, (82), 50 states have return successors, (106), 80 states have call predecessors, (106), 79 states have call successors, (106) [2023-02-18 07:58:13,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 566 transitions. [2023-02-18 07:58:13,873 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 566 transitions. Word has length 41 [2023-02-18 07:58:13,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:13,874 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 566 transitions. [2023-02-18 07:58:13,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-18 07:58:13,874 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 566 transitions. [2023-02-18 07:58:13,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-02-18 07:58:13,876 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:13,876 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1] [2023-02-18 07:58:13,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 07:58:14,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-18 07:58:14,081 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:14,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:14,082 INFO L85 PathProgramCache]: Analyzing trace with hash -130937836, now seen corresponding path program 3 times [2023-02-18 07:58:14,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:14,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355144611] [2023-02-18 07:58:14,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:14,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:14,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:14,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355144611] [2023-02-18 07:58:14,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355144611] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:14,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138979896] [2023-02-18 07:58:14,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 07:58:14,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:14,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:14,345 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) [2023-02-18 07:58:14,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 07:58:14,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-18 07:58:14,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:58:14,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-18 07:58:14,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:14,524 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:14,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:58:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:14,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138979896] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:58:14,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:58:14,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-02-18 07:58:14,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228990212] [2023-02-18 07:58:14,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:58:14,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-02-18 07:58:14,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:14,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-02-18 07:58:14,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2023-02-18 07:58:14,884 INFO L87 Difference]: Start difference. First operand 482 states and 566 transitions. Second operand has 48 states, 45 states have (on average 2.0) internal successors, (90), 26 states have internal predecessors, (90), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:58:15,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:15,707 INFO L93 Difference]: Finished difference Result 703 states and 908 transitions. [2023-02-18 07:58:15,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-02-18 07:58:15,708 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 2.0) internal successors, (90), 26 states have internal predecessors, (90), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-02-18 07:58:15,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:15,711 INFO L225 Difference]: With dead ends: 703 [2023-02-18 07:58:15,711 INFO L226 Difference]: Without dead ends: 702 [2023-02-18 07:58:15,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 70 SyntacticMatches, 20 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2534, Invalid=5656, Unknown=0, NotChecked=0, Total=8190 [2023-02-18 07:58:15,714 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 960 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:15,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 345 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 07:58:15,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2023-02-18 07:58:15,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 698. [2023-02-18 07:58:15,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 505 states have (on average 1.0811881188118813) internal successors, (546), 542 states have internal predecessors, (546), 118 states have call successors, (118), 39 states have call predecessors, (118), 74 states have return successors, (154), 116 states have call predecessors, (154), 115 states have call successors, (154) [2023-02-18 07:58:15,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 818 transitions. [2023-02-18 07:58:15,736 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 818 transitions. Word has length 57 [2023-02-18 07:58:15,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:15,736 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 818 transitions. [2023-02-18 07:58:15,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 2.0) internal successors, (90), 26 states have internal predecessors, (90), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:58:15,736 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 818 transitions. [2023-02-18 07:58:15,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-18 07:58:15,738 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:15,738 INFO L195 NwaCegarLoop]: trace histogram [9, 7, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:15,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-18 07:58:15,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-18 07:58:15,945 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:15,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:15,946 INFO L85 PathProgramCache]: Analyzing trace with hash -731848523, now seen corresponding path program 3 times [2023-02-18 07:58:15,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:15,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11041457] [2023-02-18 07:58:15,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:15,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:16,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 07:58:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:16,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:16,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 74 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-18 07:58:16,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:16,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11041457] [2023-02-18 07:58:16,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11041457] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:16,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613170307] [2023-02-18 07:58:16,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 07:58:16,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:16,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:16,081 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) [2023-02-18 07:58:16,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 07:58:16,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-02-18 07:58:16,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:58:16,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 07:58:16,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:16,220 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 74 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-18 07:58:16,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:58:16,334 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 74 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-18 07:58:16,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613170307] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:58:16,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:58:16,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2023-02-18 07:58:16,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380833101] [2023-02-18 07:58:16,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:58:16,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-18 07:58:16,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:16,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-18 07:58:16,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2023-02-18 07:58:16,336 INFO L87 Difference]: Start difference. First operand 698 states and 818 transitions. Second operand has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 16 states have internal predecessors, (62), 11 states have call successors, (13), 11 states have call predecessors, (13), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-18 07:58:16,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:16,963 INFO L93 Difference]: Finished difference Result 807 states and 950 transitions. [2023-02-18 07:58:16,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-02-18 07:58:16,963 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 16 states have internal predecessors, (62), 11 states have call successors, (13), 11 states have call predecessors, (13), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 56 [2023-02-18 07:58:16,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:16,966 INFO L225 Difference]: With dead ends: 807 [2023-02-18 07:58:16,966 INFO L226 Difference]: Without dead ends: 806 [2023-02-18 07:58:16,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 104 SyntacticMatches, 12 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1544, Invalid=4936, Unknown=0, NotChecked=0, Total=6480 [2023-02-18 07:58:16,968 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 399 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:16,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 108 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 07:58:16,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2023-02-18 07:58:16,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 410. [2023-02-18 07:58:16,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 307 states have (on average 1.1140065146579805) internal successors, (342), 308 states have internal predecessors, (342), 69 states have call successors, (69), 34 states have call predecessors, (69), 33 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-02-18 07:58:16,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 478 transitions. [2023-02-18 07:58:16,981 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 478 transitions. Word has length 56 [2023-02-18 07:58:16,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:16,981 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 478 transitions. [2023-02-18 07:58:16,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 16 states have internal predecessors, (62), 11 states have call successors, (13), 11 states have call predecessors, (13), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-18 07:58:16,981 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 478 transitions. [2023-02-18 07:58:16,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-18 07:58:16,982 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:16,982 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:16,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-18 07:58:17,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:17,186 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:17,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:17,187 INFO L85 PathProgramCache]: Analyzing trace with hash -760270738, now seen corresponding path program 4 times [2023-02-18 07:58:17,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:17,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735000621] [2023-02-18 07:58:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:17,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:17,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 07:58:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 75 proven. 255 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:17,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:17,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735000621] [2023-02-18 07:58:17,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735000621] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:17,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407260675] [2023-02-18 07:58:17,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 07:58:17,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:17,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:17,397 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) [2023-02-18 07:58:17,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 07:58:17,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 07:58:17,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:58:17,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-18 07:58:17,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:17,590 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 75 proven. 255 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:17,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:58:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 75 proven. 255 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:17,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407260675] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:58:17,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:58:17,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2023-02-18 07:58:17,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484054369] [2023-02-18 07:58:17,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:58:17,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-02-18 07:58:17,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:17,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-02-18 07:58:17,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=1889, Unknown=0, NotChecked=0, Total=2450 [2023-02-18 07:58:17,996 INFO L87 Difference]: Start difference. First operand 410 states and 478 transitions. Second operand has 50 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 28 states have internal predecessors, (103), 23 states have call successors, (24), 23 states have call predecessors, (24), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 07:58:19,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:19,548 INFO L93 Difference]: Finished difference Result 1064 states and 1353 transitions. [2023-02-18 07:58:19,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-02-18 07:58:19,549 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 28 states have internal predecessors, (103), 23 states have call successors, (24), 23 states have call predecessors, (24), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2023-02-18 07:58:19,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:19,552 INFO L225 Difference]: With dead ends: 1064 [2023-02-18 07:58:19,552 INFO L226 Difference]: Without dead ends: 1063 [2023-02-18 07:58:19,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 117 SyntacticMatches, 22 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3872 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3804, Invalid=10002, Unknown=0, NotChecked=0, Total=13806 [2023-02-18 07:58:19,555 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 1105 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 785 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:19,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 264 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [785 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-18 07:58:19,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2023-02-18 07:58:19,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1004. [2023-02-18 07:58:19,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 726 states have (on average 1.078512396694215) internal successors, (783), 780 states have internal predecessors, (783), 169 states have call successors, (169), 56 states have call predecessors, (169), 108 states have return successors, (222), 167 states have call predecessors, (222), 166 states have call successors, (222) [2023-02-18 07:58:19,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1174 transitions. [2023-02-18 07:58:19,583 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1174 transitions. Word has length 70 [2023-02-18 07:58:19,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:19,584 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1174 transitions. [2023-02-18 07:58:19,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 28 states have internal predecessors, (103), 23 states have call successors, (24), 23 states have call predecessors, (24), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 07:58:19,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1174 transitions. [2023-02-18 07:58:19,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-18 07:58:19,586 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:19,586 INFO L195 NwaCegarLoop]: trace histogram [15, 13, 12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:19,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-18 07:58:19,790 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,SelfDestructingSolverStorable16 [2023-02-18 07:58:19,790 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:19,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:19,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1701536469, now seen corresponding path program 4 times [2023-02-18 07:58:19,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:19,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957170813] [2023-02-18 07:58:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:19,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:20,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 07:58:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:20,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:20,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 158 proven. 255 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-18 07:58:20,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:20,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957170813] [2023-02-18 07:58:20,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957170813] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:20,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875162131] [2023-02-18 07:58:20,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 07:58:20,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:20,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:20,046 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) [2023-02-18 07:58:20,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 07:58:20,081 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 07:58:20,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:58:20,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-18 07:58:20,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 158 proven. 255 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-18 07:58:20,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:58:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 158 proven. 255 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-18 07:58:20,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875162131] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:58:20,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:58:20,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2023-02-18 07:58:20,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251779410] [2023-02-18 07:58:20,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:58:20,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-18 07:58:20,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:20,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-18 07:58:20,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=2086, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 07:58:20,667 INFO L87 Difference]: Start difference. First operand 1004 states and 1174 transitions. Second operand has 52 states, 51 states have (on average 2.156862745098039) internal successors, (110), 28 states have internal predecessors, (110), 23 states have call successors, (25), 23 states have call predecessors, (25), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-18 07:58:22,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:22,556 INFO L93 Difference]: Finished difference Result 1221 states and 1438 transitions. [2023-02-18 07:58:22,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-02-18 07:58:22,556 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.156862745098039) internal successors, (110), 28 states have internal predecessors, (110), 23 states have call successors, (25), 23 states have call predecessors, (25), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 86 [2023-02-18 07:58:22,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:22,560 INFO L225 Difference]: With dead ends: 1221 [2023-02-18 07:58:22,560 INFO L226 Difference]: Without dead ends: 1220 [2023-02-18 07:58:22,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 152 SyntacticMatches, 24 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8259 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=6524, Invalid=20536, Unknown=0, NotChecked=0, Total=27060 [2023-02-18 07:58:22,566 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 824 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:22,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 180 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 07:58:22,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2023-02-18 07:58:22,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 554. [2023-02-18 07:58:22,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 415 states have (on average 1.1132530120481927) internal successors, (462), 416 states have internal predecessors, (462), 93 states have call successors, (93), 46 states have call predecessors, (93), 45 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2023-02-18 07:58:22,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 646 transitions. [2023-02-18 07:58:22,585 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 646 transitions. Word has length 86 [2023-02-18 07:58:22,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:22,586 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 646 transitions. [2023-02-18 07:58:22,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.156862745098039) internal successors, (110), 28 states have internal predecessors, (110), 23 states have call successors, (25), 23 states have call predecessors, (25), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-18 07:58:22,586 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 646 transitions. [2023-02-18 07:58:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-02-18 07:58:22,591 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:22,592 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1, 1, 1] [2023-02-18 07:58:22,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-18 07:58:22,796 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,SelfDestructingSolverStorable17 [2023-02-18 07:58:22,796 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:22,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:22,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2074912724, now seen corresponding path program 4 times [2023-02-18 07:58:22,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:22,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131207979] [2023-02-18 07:58:22,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:22,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:23,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:23,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131207979] [2023-02-18 07:58:23,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131207979] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:23,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691300931] [2023-02-18 07:58:23,567 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 07:58:23,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:23,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:23,570 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) [2023-02-18 07:58:23,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 07:58:23,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 07:58:23,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:58:23,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-18 07:58:23,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:24,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:24,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:58:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:25,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691300931] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:58:25,435 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:58:25,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2023-02-18 07:58:25,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32427402] [2023-02-18 07:58:25,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:58:25,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-02-18 07:58:25,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:25,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-02-18 07:58:25,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2023-02-18 07:58:25,438 INFO L87 Difference]: Start difference. First operand 554 states and 646 transitions. Second operand has 96 states, 93 states have (on average 2.0) internal successors, (186), 50 states have internal predecessors, (186), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:58:28,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:28,371 INFO L93 Difference]: Finished difference Result 981 states and 1214 transitions. [2023-02-18 07:58:28,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2023-02-18 07:58:28,371 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 93 states have (on average 2.0) internal successors, (186), 50 states have internal predecessors, (186), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-02-18 07:58:28,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:28,374 INFO L225 Difference]: With dead ends: 981 [2023-02-18 07:58:28,375 INFO L226 Difference]: Without dead ends: 980 [2023-02-18 07:58:28,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 142 SyntacticMatches, 44 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9763 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=10814, Invalid=23968, Unknown=0, NotChecked=0, Total=34782 [2023-02-18 07:58:28,377 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 1711 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 1010 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 2427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1010 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:28,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1715 Valid, 796 Invalid, 2427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1010 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-18 07:58:28,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2023-02-18 07:58:28,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 842. [2023-02-18 07:58:28,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 631 states have (on average 1.1125198098256734) internal successors, (702), 632 states have internal predecessors, (702), 141 states have call successors, (141), 70 states have call predecessors, (141), 69 states have return successors, (139), 139 states have call predecessors, (139), 139 states have call successors, (139) [2023-02-18 07:58:28,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 982 transitions. [2023-02-18 07:58:28,397 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 982 transitions. Word has length 117 [2023-02-18 07:58:28,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:28,397 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 982 transitions. [2023-02-18 07:58:28,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 93 states have (on average 2.0) internal successors, (186), 50 states have internal predecessors, (186), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:58:28,397 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 982 transitions. [2023-02-18 07:58:28,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-02-18 07:58:28,399 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:28,399 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:28,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-02-18 07:58:28,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:28,603 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:28,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:28,604 INFO L85 PathProgramCache]: Analyzing trace with hash -862570194, now seen corresponding path program 5 times [2023-02-18 07:58:28,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:28,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472553803] [2023-02-18 07:58:28,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:28,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:29,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 07:58:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 159 proven. 1221 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:29,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:29,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472553803] [2023-02-18 07:58:29,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472553803] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:29,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041919248] [2023-02-18 07:58:29,386 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 07:58:29,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:29,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:29,387 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) [2023-02-18 07:58:29,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-18 07:58:29,429 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-02-18 07:58:29,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:58:29,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 07:58:29,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 1179 trivial. 0 not checked. [2023-02-18 07:58:29,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:58:29,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041919248] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:29,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 07:58:29,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [49] total 54 [2023-02-18 07:58:29,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7408620] [2023-02-18 07:58:29,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:29,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 07:58:29,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:29,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 07:58:29,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=659, Invalid=2203, Unknown=0, NotChecked=0, Total=2862 [2023-02-18 07:58:29,490 INFO L87 Difference]: Start difference. First operand 842 states and 982 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:58:29,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:29,547 INFO L93 Difference]: Finished difference Result 1936 states and 2469 transitions. [2023-02-18 07:58:29,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 07:58:29,548 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 130 [2023-02-18 07:58:29,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:29,552 INFO L225 Difference]: With dead ends: 1936 [2023-02-18 07:58:29,552 INFO L226 Difference]: Without dead ends: 1327 [2023-02-18 07:58:29,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=791, Invalid=2401, Unknown=0, NotChecked=0, Total=3192 [2023-02-18 07:58:29,555 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:29,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 60 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:58:29,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2023-02-18 07:58:29,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1256. [2023-02-18 07:58:29,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 908 states have (on average 1.077092511013216) internal successors, (978), 976 states have internal predecessors, (978), 210 states have call successors, (210), 71 states have call predecessors, (210), 137 states have return successors, (277), 208 states have call predecessors, (277), 208 states have call successors, (277) [2023-02-18 07:58:29,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1465 transitions. [2023-02-18 07:58:29,593 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1465 transitions. Word has length 130 [2023-02-18 07:58:29,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:29,593 INFO L495 AbstractCegarLoop]: Abstraction has 1256 states and 1465 transitions. [2023-02-18 07:58:29,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:58:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1465 transitions. [2023-02-18 07:58:29,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-02-18 07:58:29,596 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:29,596 INFO L195 NwaCegarLoop]: trace histogram [27, 25, 24, 24, 24, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:29,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-02-18 07:58:29,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:29,801 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:29,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:29,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1006567189, now seen corresponding path program 5 times [2023-02-18 07:58:29,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:29,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361993680] [2023-02-18 07:58:29,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:29,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:30,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 07:58:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:30,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:30,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:30,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 326 proven. 1221 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-18 07:58:30,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:30,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361993680] [2023-02-18 07:58:30,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361993680] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:30,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540100649] [2023-02-18 07:58:30,811 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 07:58:30,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:30,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:30,820 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) [2023-02-18 07:58:30,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-18 07:58:30,872 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-02-18 07:58:30,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:58:30,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 07:58:30,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:30,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 370 proven. 0 refuted. 0 times theorem prover too weak. 1194 trivial. 0 not checked. [2023-02-18 07:58:30,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:58:30,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540100649] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:30,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 07:58:30,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [50] total 56 [2023-02-18 07:58:30,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142685606] [2023-02-18 07:58:30,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:30,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 07:58:30,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:30,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 07:58:30,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=664, Invalid=2416, Unknown=0, NotChecked=0, Total=3080 [2023-02-18 07:58:30,984 INFO L87 Difference]: Start difference. First operand 1256 states and 1465 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 07:58:31,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:31,059 INFO L93 Difference]: Finished difference Result 1591 states and 1891 transitions. [2023-02-18 07:58:31,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 07:58:31,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 146 [2023-02-18 07:58:31,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:31,061 INFO L225 Difference]: With dead ends: 1591 [2023-02-18 07:58:31,062 INFO L226 Difference]: Without dead ends: 240 [2023-02-18 07:58:31,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=802, Invalid=2738, Unknown=0, NotChecked=0, Total=3540 [2023-02-18 07:58:31,065 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:31,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 64 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:58:31,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-02-18 07:58:31,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 238. [2023-02-18 07:58:31,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 190 states have (on average 1.0052631578947369) internal successors, (191), 190 states have internal predecessors, (191), 47 states have call successors, (47), 47 states have call predecessors, (47), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:58:31,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2023-02-18 07:58:31,070 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 146 [2023-02-18 07:58:31,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:31,070 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2023-02-18 07:58:31,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 07:58:31,070 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2023-02-18 07:58:31,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-02-18 07:58:31,072 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:31,072 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 1, 1, 1, 1, 1] [2023-02-18 07:58:31,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-18 07:58:31,276 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,SelfDestructingSolverStorable20 [2023-02-18 07:58:31,277 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:31,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:31,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1774419796, now seen corresponding path program 5 times [2023-02-18 07:58:31,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:31,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032584016] [2023-02-18 07:58:31,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:31,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:34,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:34,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:34,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032584016] [2023-02-18 07:58:34,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032584016] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:34,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917905769] [2023-02-18 07:58:34,179 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 07:58:34,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:34,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:34,181 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) [2023-02-18 07:58:34,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-18 07:58:34,298 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2023-02-18 07:58:34,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:58:34,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 96 conjunts are in the unsatisfiable core [2023-02-18 07:58:34,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:36,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:58:41,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:41,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917905769] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:58:41,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:58:41,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2023-02-18 07:58:41,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722735043] [2023-02-18 07:58:41,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:58:41,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-02-18 07:58:41,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:41,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-02-18 07:58:41,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9124, Invalid=27548, Unknown=0, NotChecked=0, Total=36672 [2023-02-18 07:58:41,576 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand has 192 states, 189 states have (on average 2.0) internal successors, (378), 98 states have internal predecessors, (378), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:58:45,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:45,579 INFO L93 Difference]: Finished difference Result 481 states and 528 transitions. [2023-02-18 07:58:45,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-02-18 07:58:45,581 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 189 states have (on average 2.0) internal successors, (378), 98 states have internal predecessors, (378), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2023-02-18 07:58:45,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:45,582 INFO L225 Difference]: With dead ends: 481 [2023-02-18 07:58:45,583 INFO L226 Difference]: Without dead ends: 480 [2023-02-18 07:58:45,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 286 SyntacticMatches, 92 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23695 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=22613, Invalid=58897, Unknown=0, NotChecked=0, Total=81510 [2023-02-18 07:58:45,588 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1605 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:45,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 44 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 07:58:45,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-02-18 07:58:45,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 478. [2023-02-18 07:58:45,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 382 states have (on average 1.0026178010471205) internal successors, (383), 382 states have internal predecessors, (383), 95 states have call successors, (95), 95 states have call predecessors, (95), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:58:45,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 478 transitions. [2023-02-18 07:58:45,596 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 478 transitions. Word has length 237 [2023-02-18 07:58:45,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:45,597 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 478 transitions. [2023-02-18 07:58:45,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 189 states have (on average 2.0) internal successors, (378), 98 states have internal predecessors, (378), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:58:45,597 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 478 transitions. [2023-02-18 07:58:45,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2023-02-18 07:58:45,601 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:45,601 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 1, 1, 1, 1, 1] [2023-02-18 07:58:45,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-02-18 07:58:45,806 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,SelfDestructingSolverStorable21 [2023-02-18 07:58:45,806 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:58:45,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:45,807 INFO L85 PathProgramCache]: Analyzing trace with hash 750235220, now seen corresponding path program 6 times [2023-02-18 07:58:45,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:45,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958437470] [2023-02-18 07:58:45,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:45,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:56,398 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:56,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:56,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958437470] [2023-02-18 07:58:56,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958437470] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:56,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409306018] [2023-02-18 07:58:56,399 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 07:58:56,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:56,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:56,404 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) [2023-02-18 07:58:56,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-18 07:58:56,644 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2023-02-18 07:58:56,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:58:56,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 192 conjunts are in the unsatisfiable core [2023-02-18 07:58:56,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:59:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:59:03,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:59:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:59:21,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409306018] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:59:21,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:59:21,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2023-02-18 07:59:21,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651314210] [2023-02-18 07:59:21,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:59:21,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-02-18 07:59:21,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:59:21,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-02-18 07:59:21,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36676, Invalid=110396, Unknown=0, NotChecked=0, Total=147072 [2023-02-18 07:59:21,486 INFO L87 Difference]: Start difference. First operand 478 states and 478 transitions. Second operand has 384 states, 381 states have (on average 2.0) internal successors, (762), 194 states have internal predecessors, (762), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:59:47,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:59:47,594 INFO L93 Difference]: Finished difference Result 961 states and 1056 transitions. [2023-02-18 07:59:47,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2023-02-18 07:59:47,594 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 381 states have (on average 2.0) internal successors, (762), 194 states have internal predecessors, (762), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 477 [2023-02-18 07:59:47,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:59:47,597 INFO L225 Difference]: With dead ends: 961 [2023-02-18 07:59:47,597 INFO L226 Difference]: Without dead ends: 960 [2023-02-18 07:59:47,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1334 GetRequests, 574 SyntacticMatches, 188 SemanticMatches, 572 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98047 ImplicationChecksByTransitivity, 43.2s TimeCoverageRelationStatistics Valid=91301, Invalid=237601, Unknown=0, NotChecked=0, Total=328902 [2023-02-18 07:59:47,617 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3385 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1738 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3385 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-18 07:59:47,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3385 Valid, 63 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1738 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-18 07:59:47,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-02-18 07:59:47,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 958. [2023-02-18 07:59:47,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 766 states have (on average 1.0013054830287207) internal successors, (767), 766 states have internal predecessors, (767), 191 states have call successors, (191), 191 states have call predecessors, (191), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:59:47,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 958 transitions. [2023-02-18 07:59:47,634 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 958 transitions. Word has length 477 [2023-02-18 07:59:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:59:47,634 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 958 transitions. [2023-02-18 07:59:47,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 381 states have (on average 2.0) internal successors, (762), 194 states have internal predecessors, (762), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:59:47,635 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 958 transitions. [2023-02-18 07:59:47,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2023-02-18 07:59:47,650 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:59:47,650 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 190, 190, 190, 1, 1, 1, 1, 1] [2023-02-18 07:59:47,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-02-18 07:59:47,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:59:47,857 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 07:59:47,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:59:47,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1606028372, now seen corresponding path program 7 times [2023-02-18 07:59:47,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:59:47,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252868741] [2023-02-18 07:59:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:59:47,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:59:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:00:46,297 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:00:46,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:00:46,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252868741] [2023-02-18 08:00:46,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252868741] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:00:46,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145429265] [2023-02-18 08:00:46,298 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 08:00:46,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:00:46,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:00:46,314 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) [2023-02-18 08:00:46,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-18 08:00:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:00:46,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 384 conjunts are in the unsatisfiable core [2023-02-18 08:00:46,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:01:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:01:11,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:02:12,803 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:02:12,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145429265] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:02:12,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:02:12,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 767 [2023-02-18 08:02:12,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977677384] [2023-02-18 08:02:12,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:02:12,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2023-02-18 08:02:12,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:02:12,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2023-02-18 08:02:12,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147076, Invalid=441980, Unknown=0, NotChecked=0, Total=589056 [2023-02-18 08:02:12,859 INFO L87 Difference]: Start difference. First operand 958 states and 958 transitions. Second operand has 768 states, 765 states have (on average 2.0) internal successors, (1530), 386 states have internal predecessors, (1530), 382 states have call successors, (382), 382 states have call predecessors, (382), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:06:07,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:06:07,769 INFO L93 Difference]: Finished difference Result 1921 states and 2112 transitions. [2023-02-18 08:06:07,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2023-02-18 08:06:07,771 INFO L78 Accepts]: Start accepts. Automaton has has 768 states, 765 states have (on average 2.0) internal successors, (1530), 386 states have internal predecessors, (1530), 382 states have call successors, (382), 382 states have call predecessors, (382), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 957 [2023-02-18 08:06:07,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:06:07,794 INFO L225 Difference]: With dead ends: 1921 [2023-02-18 08:06:07,794 INFO L226 Difference]: Without dead ends: 1920 [2023-02-18 08:06:07,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2678 GetRequests, 1150 SyntacticMatches, 380 SemanticMatches, 1148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398815 ImplicationChecksByTransitivity, 166.6s TimeCoverageRelationStatistics Valid=366917, Invalid=954433, Unknown=0, NotChecked=0, Total=1321350 [2023-02-18 08:06:07,890 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 7137 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 3454 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7137 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 3456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-02-18 08:06:07,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7137 Valid, 55 Invalid, 3456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3454 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-02-18 08:06:07,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2023-02-18 08:06:07,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1918. [2023-02-18 08:06:07,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1918 states, 1534 states have (on average 1.0006518904823989) internal successors, (1535), 1534 states have internal predecessors, (1535), 383 states have call successors, (383), 383 states have call predecessors, (383), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:06:07,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 1918 transitions. [2023-02-18 08:06:07,923 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 1918 transitions. Word has length 957 [2023-02-18 08:06:07,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:06:07,924 INFO L495 AbstractCegarLoop]: Abstraction has 1918 states and 1918 transitions. [2023-02-18 08:06:07,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 768 states, 765 states have (on average 2.0) internal successors, (1530), 386 states have internal predecessors, (1530), 382 states have call successors, (382), 382 states have call predecessors, (382), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:06:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 1918 transitions. [2023-02-18 08:06:07,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1918 [2023-02-18 08:06:07,945 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:06:07,946 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 382, 382, 382, 1, 1, 1, 1, 1] [2023-02-18 08:06:07,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-02-18 08:06:08,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:06:08,153 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-18 08:06:08,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:06:08,154 INFO L85 PathProgramCache]: Analyzing trace with hash 170313812, now seen corresponding path program 8 times [2023-02-18 08:06:08,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:06:08,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052452103] [2023-02-18 08:06:08,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:06:08,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:06:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:11:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 365001 backedges. 0 proven. 365001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:11:41,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:11:41,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052452103] [2023-02-18 08:11:41,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052452103] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:11:41,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616176819] [2023-02-18 08:11:41,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 08:11:41,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:11:41,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:11:41,462 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) [2023-02-18 08:11:41,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-18 08:11:41,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 08:11:41,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:11:41,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 3452 conjuncts, 768 conjunts are in the unsatisfiable core [2023-02-18 08:11:41,987 INFO L286 TraceCheckSpWp]: Computing forward predicates...