./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/TerminatorRec02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6c24879c 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-numeric/TerminatorRec02.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 744c3d26555bbd53a7a0d9e7c64efe010ba06d0f67ec9ca21eb74ed1148222d3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 02:07:14,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 02:07:14,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 02:07:15,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 02:07:15,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 02:07:15,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 02:07:15,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 02:07:15,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 02:07:15,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 02:07:15,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 02:07:15,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 02:07:15,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 02:07:15,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 02:07:15,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 02:07:15,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 02:07:15,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 02:07:15,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 02:07:15,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 02:07:15,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 02:07:15,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 02:07:15,036 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 02:07:15,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 02:07:15,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 02:07:15,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 02:07:15,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 02:07:15,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 02:07:15,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 02:07:15,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 02:07:15,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 02:07:15,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 02:07:15,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 02:07:15,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 02:07:15,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 02:07:15,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 02:07:15,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 02:07:15,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 02:07:15,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 02:07:15,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 02:07:15,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 02:07:15,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 02:07:15,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 02:07:15,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 02:07:15,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-13 02:07:15,078 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 02:07:15,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 02:07:15,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 02:07:15,082 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 02:07:15,083 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 02:07:15,083 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 02:07:15,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 02:07:15,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 02:07:15,084 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 02:07:15,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 02:07:15,084 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 02:07:15,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 02:07:15,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 02:07:15,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 02:07:15,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 02:07:15,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 02:07:15,085 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-13 02:07:15,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 02:07:15,086 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 02:07:15,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 02:07:15,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 02:07:15,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 02:07:15,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 02:07:15,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:07:15,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 02:07:15,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 02:07:15,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 02:07:15,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 02:07:15,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 02:07:15,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 02:07:15,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 744c3d26555bbd53a7a0d9e7c64efe010ba06d0f67ec9ca21eb74ed1148222d3 [2022-07-13 02:07:15,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 02:07:15,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 02:07:15,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 02:07:15,296 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 02:07:15,296 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 02:07:15,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/TerminatorRec02.c [2022-07-13 02:07:15,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/552292e79/ddce624e58534138ab2f1a46710205c8/FLAG5774eaef2 [2022-07-13 02:07:15,674 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 02:07:15,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/TerminatorRec02.c [2022-07-13 02:07:15,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/552292e79/ddce624e58534138ab2f1a46710205c8/FLAG5774eaef2 [2022-07-13 02:07:15,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/552292e79/ddce624e58534138ab2f1a46710205c8 [2022-07-13 02:07:15,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 02:07:15,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 02:07:15,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 02:07:15,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 02:07:15,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 02:07:15,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:07:15" (1/1) ... [2022-07-13 02:07:15,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b31f818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:15, skipping insertion in model container [2022-07-13 02:07:15,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:07:15" (1/1) ... [2022-07-13 02:07:15,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 02:07:15,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 02:07:15,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:07:15,892 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 02:07:15,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:07:15,920 INFO L208 MainTranslator]: Completed translation [2022-07-13 02:07:15,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:15 WrapperNode [2022-07-13 02:07:15,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 02:07:15,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 02:07:15,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 02:07:15,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 02:07:15,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:15" (1/1) ... [2022-07-13 02:07:15,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:15" (1/1) ... [2022-07-13 02:07:15,942 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-07-13 02:07:15,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 02:07:15,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 02:07:15,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 02:07:15,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 02:07:15,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:15" (1/1) ... [2022-07-13 02:07:15,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:15" (1/1) ... [2022-07-13 02:07:15,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:15" (1/1) ... [2022-07-13 02:07:15,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:15" (1/1) ... [2022-07-13 02:07:15,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:15" (1/1) ... [2022-07-13 02:07:15,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:15" (1/1) ... [2022-07-13 02:07:15,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:15" (1/1) ... [2022-07-13 02:07:15,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 02:07:15,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 02:07:15,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 02:07:15,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 02:07:15,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:15" (1/1) ... [2022-07-13 02:07:15,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:07:15,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:15,999 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) [2022-07-13 02:07:16,009 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 [2022-07-13 02:07:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2022-07-13 02:07:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2022-07-13 02:07:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 02:07:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 02:07:16,079 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 02:07:16,080 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 02:07:16,175 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 02:07:16,181 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 02:07:16,181 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 02:07:16,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:07:16 BoogieIcfgContainer [2022-07-13 02:07:16,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 02:07:16,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 02:07:16,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 02:07:16,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 02:07:16,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:07:15" (1/3) ... [2022-07-13 02:07:16,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4577d538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:07:16, skipping insertion in model container [2022-07-13 02:07:16,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:15" (2/3) ... [2022-07-13 02:07:16,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4577d538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:07:16, skipping insertion in model container [2022-07-13 02:07:16,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:07:16" (3/3) ... [2022-07-13 02:07:16,193 INFO L111 eAbstractionObserver]: Analyzing ICFG TerminatorRec02.c [2022-07-13 02:07:16,203 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 02:07:16,203 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-13 02:07:16,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:07:16,236 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@749da9e1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4ed8627e [2022-07-13 02:07:16,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 02:07:16,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 02:07:16,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 02:07:16,242 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:16,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:16,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:07:16,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:16,246 INFO L85 PathProgramCache]: Analyzing trace with hash -211694171, now seen corresponding path program 1 times [2022-07-13 02:07:16,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:16,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776040469] [2022-07-13 02:07:16,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:16,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:07:16,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:16,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776040469] [2022-07-13 02:07:16,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776040469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:07:16,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:07:16,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:07:16,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31788445] [2022-07-13 02:07:16,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:07:16,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:07:16,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:16,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:07:16,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:07:16,407 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2022-07-13 02:07:16,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:16,474 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-07-13 02:07:16,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:07:16,476 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 [2022-07-13 02:07:16,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:16,480 INFO L225 Difference]: With dead ends: 23 [2022-07-13 02:07:16,490 INFO L226 Difference]: Without dead ends: 18 [2022-07-13 02:07:16,492 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 [2022-07-13 02:07:16,495 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:16,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 28 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:07:16,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-13 02:07:16,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-07-13 02:07:16,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 states have internal predecessors, (16), 2 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) [2022-07-13 02:07:16,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-07-13 02:07:16,538 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2022-07-13 02:07:16,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:16,539 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-07-13 02:07:16,539 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) [2022-07-13 02:07:16,539 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-07-13 02:07:16,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:07:16,539 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:16,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:16,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 02:07:16,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:07:16,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:16,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2027415328, now seen corresponding path program 1 times [2022-07-13 02:07:16,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:16,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348469731] [2022-07-13 02:07:16,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:16,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:07:16,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:16,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348469731] [2022-07-13 02:07:16,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348469731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:07:16,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:07:16,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:07:16,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693068588] [2022-07-13 02:07:16,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:07:16,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:07:16,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:16,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:07:16,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:07:16,590 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:16,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:16,628 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-07-13 02:07:16,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:07:16,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-13 02:07:16,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:16,630 INFO L225 Difference]: With dead ends: 20 [2022-07-13 02:07:16,632 INFO L226 Difference]: Without dead ends: 19 [2022-07-13 02:07:16,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:07:16,633 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:16,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 19 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:07:16,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-13 02:07:16,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-07-13 02:07:16,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 2 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) [2022-07-13 02:07:16,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-07-13 02:07:16,647 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2022-07-13 02:07:16,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:16,647 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-07-13 02:07:16,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:16,647 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-07-13 02:07:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 02:07:16,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:16,651 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:16,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 02:07:16,651 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:07:16,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:16,652 INFO L85 PathProgramCache]: Analyzing trace with hash -768770172, now seen corresponding path program 1 times [2022-07-13 02:07:16,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:16,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651819786] [2022-07-13 02:07:16,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:16,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:16,672 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:16,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350362209] [2022-07-13 02:07:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:16,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:16,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:16,675 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) [2022-07-13 02:07:16,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 02:07:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:16,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 02:07:16,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:16,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:07:16,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:07:17,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:17,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651819786] [2022-07-13 02:07:17,029 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:17,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350362209] [2022-07-13 02:07:17,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350362209] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:07:17,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:07:17,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-07-13 02:07:17,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997722518] [2022-07-13 02:07:17,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:17,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 02:07:17,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:17,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 02:07:17,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-13 02:07:17,034 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 02:07:17,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:17,137 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2022-07-13 02:07:17,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 02:07:17,138 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-07-13 02:07:17,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:17,138 INFO L225 Difference]: With dead ends: 26 [2022-07-13 02:07:17,138 INFO L226 Difference]: Without dead ends: 25 [2022-07-13 02:07:17,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-07-13 02:07:17,140 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:17,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 36 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 74 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2022-07-13 02:07:17,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-13 02:07:17,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2022-07-13 02:07:17,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 02:07:17,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-07-13 02:07:17,144 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2022-07-13 02:07:17,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:17,144 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-07-13 02:07:17,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 02:07:17,144 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-07-13 02:07:17,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-13 02:07:17,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:17,145 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:17,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 02:07:17,360 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 [2022-07-13 02:07:17,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:07:17,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:17,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1937928487, now seen corresponding path program 1 times [2022-07-13 02:07:17,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:17,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603615339] [2022-07-13 02:07:17,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:17,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:17,375 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:17,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391082589] [2022-07-13 02:07:17,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:17,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:17,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:17,390 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) [2022-07-13 02:07:17,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 02:07:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:17,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 02:07:17,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 02:07:17,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:07:17,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:17,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603615339] [2022-07-13 02:07:17,494 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:17,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391082589] [2022-07-13 02:07:17,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391082589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:07:17,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:07:17,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 02:07:17,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644899108] [2022-07-13 02:07:17,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:07:17,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 02:07:17,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:17,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 02:07:17,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:07:17,495 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 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) [2022-07-13 02:07:17,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:17,521 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-07-13 02:07:17,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 02:07:17,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 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 17 [2022-07-13 02:07:17,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:17,522 INFO L225 Difference]: With dead ends: 21 [2022-07-13 02:07:17,522 INFO L226 Difference]: Without dead ends: 20 [2022-07-13 02:07:17,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 02:07:17,523 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:17,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 32 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:07:17,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-07-13 02:07:17,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-07-13 02:07:17,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 02:07:17,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-07-13 02:07:17,526 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2022-07-13 02:07:17,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:17,526 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-07-13 02:07:17,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 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) [2022-07-13 02:07:17,526 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-07-13 02:07:17,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 02:07:17,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:17,527 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:17,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:17,742 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,SelfDestructingSolverStorable3 [2022-07-13 02:07:17,743 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:07:17,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:17,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1374727458, now seen corresponding path program 1 times [2022-07-13 02:07:17,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:17,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039747567] [2022-07-13 02:07:17,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:17,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:17,751 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:17,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750245108] [2022-07-13 02:07:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:17,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:17,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:17,780 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:07:17,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 02:07:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:17,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 02:07:17,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:17,902 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 02:07:17,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:18,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:18,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039747567] [2022-07-13 02:07:18,690 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:18,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750245108] [2022-07-13 02:07:18,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750245108] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:07:18,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:07:18,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-07-13 02:07:18,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576058701] [2022-07-13 02:07:18,691 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:18,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 02:07:18,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:18,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 02:07:18,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-13 02:07:18,691 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 02:07:18,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:18,834 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2022-07-13 02:07:18,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 02:07:18,834 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-07-13 02:07:18,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:18,835 INFO L225 Difference]: With dead ends: 29 [2022-07-13 02:07:18,835 INFO L226 Difference]: Without dead ends: 28 [2022-07-13 02:07:18,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-07-13 02:07:18,835 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 33 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:18,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 50 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:07:18,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-13 02:07:18,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2022-07-13 02:07:18,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-13 02:07:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-07-13 02:07:18,839 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 26 [2022-07-13 02:07:18,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:18,839 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-07-13 02:07:18,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 02:07:18,840 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-07-13 02:07:18,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 02:07:18,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:18,841 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:18,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:19,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:19,070 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:07:19,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:19,070 INFO L85 PathProgramCache]: Analyzing trace with hash -708839420, now seen corresponding path program 2 times [2022-07-13 02:07:19,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:19,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786186904] [2022-07-13 02:07:19,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:19,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:19,080 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:19,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1599078245] [2022-07-13 02:07:19,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:07:19,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:19,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:19,081 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) [2022-07-13 02:07:19,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:07:19,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:19,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-13 02:07:19,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:19,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 02:07:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 02:07:19,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:19,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:19,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786186904] [2022-07-13 02:07:19,575 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:19,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599078245] [2022-07-13 02:07:19,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599078245] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:07:19,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:07:19,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-07-13 02:07:19,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84442520] [2022-07-13 02:07:19,576 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:19,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 02:07:19,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:19,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 02:07:19,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-07-13 02:07:19,578 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 02:07:19,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:19,718 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2022-07-13 02:07:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 02:07:19,718 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 36 [2022-07-13 02:07:19,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:19,719 INFO L225 Difference]: With dead ends: 34 [2022-07-13 02:07:19,719 INFO L226 Difference]: Without dead ends: 33 [2022-07-13 02:07:19,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2022-07-13 02:07:19,720 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:19,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 60 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 61 Unchecked, 0.0s Time] [2022-07-13 02:07:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-07-13 02:07:19,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2022-07-13 02:07:19,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 02:07:19,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-07-13 02:07:19,724 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 36 [2022-07-13 02:07:19,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:19,724 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-07-13 02:07:19,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 02:07:19,725 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-07-13 02:07:19,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-13 02:07:19,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:19,726 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:19,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:19,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:19,936 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:07:19,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:19,937 INFO L85 PathProgramCache]: Analyzing trace with hash -2142068702, now seen corresponding path program 3 times [2022-07-13 02:07:19,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:19,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644894254] [2022-07-13 02:07:19,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:19,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:19,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:19,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147447526] [2022-07-13 02:07:19,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:07:19,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:19,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:19,950 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) [2022-07-13 02:07:19,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 02:07:19,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-13 02:07:19,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:19,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-13 02:07:19,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 02:07:30,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:31,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:31,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644894254] [2022-07-13 02:07:31,597 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:31,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147447526] [2022-07-13 02:07:31,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147447526] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:07:31,597 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:07:31,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-07-13 02:07:31,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129825600] [2022-07-13 02:07:31,597 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:31,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 02:07:31,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:31,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 02:07:31,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=291, Unknown=7, NotChecked=0, Total=380 [2022-07-13 02:07:31,598 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 17 states, 16 states have (on average 1.9375) internal successors, (31), 13 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 02:07:35,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:35,252 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2022-07-13 02:07:35,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 02:07:35,252 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 13 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 46 [2022-07-13 02:07:35,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:35,253 INFO L225 Difference]: With dead ends: 45 [2022-07-13 02:07:35,253 INFO L226 Difference]: Without dead ends: 44 [2022-07-13 02:07:35,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=146, Invalid=497, Unknown=7, NotChecked=0, Total=650 [2022-07-13 02:07:35,254 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:35,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 67 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 108 Unchecked, 0.0s Time] [2022-07-13 02:07:35,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-13 02:07:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2022-07-13 02:07:35,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-13 02:07:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2022-07-13 02:07:35,259 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 46 [2022-07-13 02:07:35,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:35,259 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2022-07-13 02:07:35,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 13 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 02:07:35,259 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2022-07-13 02:07:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-13 02:07:35,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:35,260 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:35,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:35,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:35,461 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:07:35,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:35,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1431216260, now seen corresponding path program 4 times [2022-07-13 02:07:35,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:35,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217947974] [2022-07-13 02:07:35,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:35,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:35,470 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:35,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670269041] [2022-07-13 02:07:35,470 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:07:35,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:35,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:35,473 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) [2022-07-13 02:07:35,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 02:07:35,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:07:35,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:35,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-13 02:07:35,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:50,095 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 9 proven. 75 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 02:07:50,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:52,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:52,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217947974] [2022-07-13 02:07:52,048 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:52,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670269041] [2022-07-13 02:07:52,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670269041] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:07:52,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:07:52,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-07-13 02:07:52,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904824057] [2022-07-13 02:07:52,048 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:52,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-13 02:07:52,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:52,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-13 02:07:52,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=677, Unknown=6, NotChecked=0, Total=812 [2022-07-13 02:07:52,049 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 18 states have internal predecessors, (39), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-13 02:08:20,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:08:20,062 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2022-07-13 02:08:20,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 02:08:20,062 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 18 states have internal predecessors, (39), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 56 [2022-07-13 02:08:20,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:08:20,063 INFO L225 Difference]: With dead ends: 41 [2022-07-13 02:08:20,063 INFO L226 Difference]: Without dead ends: 40 [2022-07-13 02:08:20,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 42.6s TimeCoverageRelationStatistics Valid=318, Invalid=1480, Unknown=8, NotChecked=0, Total=1806 [2022-07-13 02:08:20,064 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 34 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:08:20,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 72 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 77 Invalid, 0 Unknown, 102 Unchecked, 0.0s Time] [2022-07-13 02:08:20,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-07-13 02:08:20,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-07-13 02:08:20,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 02:08:20,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2022-07-13 02:08:20,068 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 56 [2022-07-13 02:08:20,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:08:20,068 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2022-07-13 02:08:20,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 18 states have internal predecessors, (39), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-13 02:08:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2022-07-13 02:08:20,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-13 02:08:20,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:08:20,069 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:08:20,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 02:08:20,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:20,279 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:08:20,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:08:20,280 INFO L85 PathProgramCache]: Analyzing trace with hash 973879645, now seen corresponding path program 5 times [2022-07-13 02:08:20,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:08:20,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957498315] [2022-07-13 02:08:20,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:08:20,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:08:20,290 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:08:20,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370393262] [2022-07-13 02:08:20,290 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:08:20,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:20,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:08:20,297 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) [2022-07-13 02:08:20,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 02:08:20,367 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-07-13 02:08:20,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:08:20,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 51 conjunts are in the unsatisfiable core [2022-07-13 02:08:20,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:08:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 46 proven. 86 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-13 02:08:23,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:08:26,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:08:26,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957498315] [2022-07-13 02:08:26,083 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:08:26,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370393262] [2022-07-13 02:08:26,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370393262] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:08:26,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:08:26,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-07-13 02:08:26,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426266184] [2022-07-13 02:08:26,084 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:08:26,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-13 02:08:26,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:08:26,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 02:08:26,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2022-07-13 02:08:26,085 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 19 states have internal predecessors, (43), 4 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 02:08:26,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:08:26,334 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2022-07-13 02:08:26,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 02:08:26,334 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 19 states have internal predecessors, (43), 4 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) Word has length 71 [2022-07-13 02:08:26,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:08:26,335 INFO L225 Difference]: With dead ends: 49 [2022-07-13 02:08:26,335 INFO L226 Difference]: Without dead ends: 48 [2022-07-13 02:08:26,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=216, Invalid=974, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 02:08:26,337 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 40 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 229 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:08:26,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 149 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 100 Invalid, 0 Unknown, 229 Unchecked, 0.1s Time] [2022-07-13 02:08:26,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-13 02:08:26,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2022-07-13 02:08:26,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 02:08:26,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2022-07-13 02:08:26,341 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 71 [2022-07-13 02:08:26,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:08:26,341 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2022-07-13 02:08:26,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 19 states have internal predecessors, (43), 4 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 02:08:26,341 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2022-07-13 02:08:26,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-13 02:08:26,342 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:08:26,342 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:08:26,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-13 02:08:26,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:26,543 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:08:26,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:08:26,543 INFO L85 PathProgramCache]: Analyzing trace with hash 69058943, now seen corresponding path program 6 times [2022-07-13 02:08:26,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:08:26,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512071790] [2022-07-13 02:08:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:08:26,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:08:26,556 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:08:26,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932470382] [2022-07-13 02:08:26,556 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:08:26,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:26,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:08:26,557 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) [2022-07-13 02:08:26,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 02:08:26,795 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-07-13 02:08:26,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:08:26,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-13 02:08:26,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:08:49,513 WARN L855 $PredicateComparison]: unable to prove that (exists ((fact_~y~0 Int) (fact_~x Int)) (and (< 2 fact_~x) (exists ((v_fact_~x_232 Int) (v_fact_~x_231 Int) (v_fact_~x_230 Int) (v_fact_~y~0_138 Int)) (and (<= v_fact_~x_231 (+ v_fact_~x_230 1)) (<= v_fact_~x_230 3) (<= (+ (* v_fact_~x_232 v_fact_~x_231 v_fact_~x_230) v_fact_~y~0_138) (* v_fact_~x_232 v_fact_~x_231 v_fact_~x_230 v_fact_~x_230)) (<= (+ fact_~y~0 v_fact_~y~0_138) (* fact_~x v_fact_~y~0_138)) (< 2 v_fact_~x_230) (< 1 v_fact_~x_231) (< 1 v_fact_~x_232) (<= fact_~x (+ v_fact_~x_232 2)) (<= v_fact_~x_232 (+ v_fact_~x_231 1)))) (<= |c_fact_#in~x| fact_~x) (<= |c_fact_#res| (* fact_~y~0 fact_~x)))) is different from true [2022-07-13 02:09:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 73 proven. 101 refuted. 0 times theorem prover too weak. 69 trivial. 12 not checked. [2022-07-13 02:09:19,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:09:25,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:09:25,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512071790] [2022-07-13 02:09:25,782 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:09:25,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932470382] [2022-07-13 02:09:25,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932470382] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:09:25,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:09:25,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-07-13 02:09:25,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666049820] [2022-07-13 02:09:25,784 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:09:25,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-13 02:09:25,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:09:25,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-13 02:09:25,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=691, Unknown=19, NotChecked=56, Total=930 [2022-07-13 02:09:25,786 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 21 states have internal predecessors, (47), 4 states have call successors, (5), 1 states have call predecessors, (5), 7 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 02:10:48,772 WARN L233 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 51 DAG size of output: 44 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 02:11:03,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:03,922 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2022-07-13 02:11:03,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 02:11:03,923 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 21 states have internal predecessors, (47), 4 states have call successors, (5), 1 states have call predecessors, (5), 7 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) Word has length 81 [2022-07-13 02:11:03,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:03,924 INFO L225 Difference]: With dead ends: 54 [2022-07-13 02:11:03,924 INFO L226 Difference]: Without dead ends: 53 [2022-07-13 02:11:03,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 154.2s TimeCoverageRelationStatistics Valid=350, Invalid=1604, Unknown=30, NotChecked=86, Total=2070 [2022-07-13 02:11:03,925 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 62 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:03,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 86 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 261 Unchecked, 0.1s Time] [2022-07-13 02:11:03,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-07-13 02:11:03,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2022-07-13 02:11:03,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-13 02:11:03,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2022-07-13 02:11:03,929 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 81 [2022-07-13 02:11:03,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:03,929 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2022-07-13 02:11:03,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 21 states have internal predecessors, (47), 4 states have call successors, (5), 1 states have call predecessors, (5), 7 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 02:11:03,929 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2022-07-13 02:11:03,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 02:11:03,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:03,930 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:03,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 02:11:04,151 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,SelfDestructingSolverStorable9 [2022-07-13 02:11:04,151 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:11:04,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:04,152 INFO L85 PathProgramCache]: Analyzing trace with hash 200138973, now seen corresponding path program 7 times [2022-07-13 02:11:04,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:04,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81427290] [2022-07-13 02:11:04,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:04,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:04,180 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:11:04,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273868847] [2022-07-13 02:11:04,185 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 02:11:04,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:04,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:04,212 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) [2022-07-13 02:11:04,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 02:11:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:04,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 69 conjunts are in the unsatisfiable core [2022-07-13 02:11:04,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 57 proven. 174 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-13 02:11:19,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:24,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:24,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81427290] [2022-07-13 02:11:24,991 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:11:24,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273868847] [2022-07-13 02:11:24,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273868847] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:24,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:11:24,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2022-07-13 02:11:24,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200041390] [2022-07-13 02:11:24,992 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:24,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-13 02:11:24,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:24,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-13 02:11:24,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1114, Unknown=6, NotChecked=0, Total=1332 [2022-07-13 02:11:24,997 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 31 states, 30 states have (on average 1.7) internal successors, (51), 23 states have internal predecessors, (51), 4 states have call successors, (5), 1 states have call predecessors, (5), 8 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 02:11:25,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:25,323 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2022-07-13 02:11:25,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 02:11:25,323 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.7) internal successors, (51), 23 states have internal predecessors, (51), 4 states have call successors, (5), 1 states have call predecessors, (5), 8 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) Word has length 91 [2022-07-13 02:11:25,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:25,326 INFO L225 Difference]: With dead ends: 56 [2022-07-13 02:11:25,326 INFO L226 Difference]: Without dead ends: 55 [2022-07-13 02:11:25,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=248, Invalid=1228, Unknown=6, NotChecked=0, Total=1482 [2022-07-13 02:11:25,327 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:25,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 227 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 202 Unchecked, 0.1s Time] [2022-07-13 02:11:25,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-07-13 02:11:25,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-07-13 02:11:25,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-13 02:11:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2022-07-13 02:11:25,330 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 91 [2022-07-13 02:11:25,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:25,330 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2022-07-13 02:11:25,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.7) internal successors, (51), 23 states have internal predecessors, (51), 4 states have call successors, (5), 1 states have call predecessors, (5), 8 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 02:11:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2022-07-13 02:11:25,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-13 02:11:25,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:25,331 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:25,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 02:11:25,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:25,547 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:11:25,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:25,548 INFO L85 PathProgramCache]: Analyzing trace with hash 424706436, now seen corresponding path program 8 times [2022-07-13 02:11:25,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:25,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578253741] [2022-07-13 02:11:25,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:25,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:25,559 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:11:25,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012627391] [2022-07-13 02:11:25,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:11:25,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:25,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:25,561 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) [2022-07-13 02:11:25,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 02:11:25,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:11:25,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:11:25,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 89 conjunts are in the unsatisfiable core [2022-07-13 02:11:25,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:34,082 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 51 proven. 210 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-13 02:11:34,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:41,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:41,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578253741] [2022-07-13 02:11:41,684 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:11:41,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012627391] [2022-07-13 02:11:41,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012627391] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:41,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:11:41,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-07-13 02:11:41,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479105826] [2022-07-13 02:11:41,685 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:41,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-13 02:11:41,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:41,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-13 02:11:41,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1265, Unknown=2, NotChecked=0, Total=1482 [2022-07-13 02:11:41,686 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 33 states, 32 states have (on average 1.625) internal successors, (52), 24 states have internal predecessors, (52), 4 states have call successors, (4), 1 states have call predecessors, (4), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 02:11:48,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:48,236 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2022-07-13 02:11:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 02:11:48,237 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.625) internal successors, (52), 24 states have internal predecessors, (52), 4 states have call successors, (4), 1 states have call predecessors, (4), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) Word has length 96 [2022-07-13 02:11:48,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:48,239 INFO L225 Difference]: With dead ends: 64 [2022-07-13 02:11:48,239 INFO L226 Difference]: Without dead ends: 63 [2022-07-13 02:11:48,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=317, Invalid=1937, Unknown=2, NotChecked=0, Total=2256 [2022-07-13 02:11:48,240 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 48 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:48,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 308 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 917 Invalid, 0 Unknown, 128 Unchecked, 1.0s Time] [2022-07-13 02:11:48,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-07-13 02:11:48,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2022-07-13 02:11:48,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-13 02:11:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2022-07-13 02:11:48,243 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 96 [2022-07-13 02:11:48,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:48,244 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2022-07-13 02:11:48,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.625) internal successors, (52), 24 states have internal predecessors, (52), 4 states have call successors, (4), 1 states have call predecessors, (4), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 02:11:48,244 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2022-07-13 02:11:48,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 02:11:48,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:48,245 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:48,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 02:11:48,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 02:11:48,462 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:11:48,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:48,462 INFO L85 PathProgramCache]: Analyzing trace with hash -679389091, now seen corresponding path program 9 times [2022-07-13 02:11:48,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:48,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272167198] [2022-07-13 02:11:48,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:48,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:48,483 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:11:48,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860025691] [2022-07-13 02:11:48,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:11:48,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:48,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:48,491 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) [2022-07-13 02:11:48,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 02:11:48,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-07-13 02:11:48,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:11:48,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 98 conjunts are in the unsatisfiable core [2022-07-13 02:11:48,689 INFO L286 TraceCheckSpWp]: Computing forward predicates...